/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/array-industry-pattern/array_range_init.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:52:59,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:52:59,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 06:52:59,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:52:59,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:52:59,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:52:59,464 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:52:59,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:52:59,465 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:52:59,466 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:52:59,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:52:59,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:52:59,467 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:52:59,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:52:59,467 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:52:59,468 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:52:59,468 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:52:59,469 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:52:59,469 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:52:59,469 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:52:59,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:52:59,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:52:59,471 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:52:59,471 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 06:52:59,471 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 06:52:59,472 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:52:59,472 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 06:52:59,472 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:52:59,473 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:52:59,473 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:52:59,473 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:52:59,474 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:52:59,474 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:52:59,474 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:52:59,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:52:59,475 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:52:59,475 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:52:59,476 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:52:59,476 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 06:52:59,476 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 06:52:59,477 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:52:59,477 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:52:59,477 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:52:59,477 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:52:59,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:52:59,478 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 06:52:59,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 06:52:59,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:52:59,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:52:59,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:52:59,661 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:52:59,663 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:52:59,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_range_init.i [2023-12-16 06:53:00,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:53:01,032 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:53:01,032 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_range_init.i [2023-12-16 06:53:01,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68cd2ccd6/567bac63f2514362886251866f1921c3/FLAG0ea412b67 [2023-12-16 06:53:01,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68cd2ccd6/567bac63f2514362886251866f1921c3 [2023-12-16 06:53:01,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:53:01,064 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:53:01,067 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:53:01,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:53:01,071 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:53:01,072 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2868aa1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01, skipping insertion in model container [2023-12-16 06:53:01,073 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,095 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:53:01,246 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_range_init.i[809,822] [2023-12-16 06:53:01,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:53:01,283 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:53:01,295 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_range_init.i[809,822] [2023-12-16 06:53:01,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:53:01,316 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:53:01,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01 WrapperNode [2023-12-16 06:53:01,319 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:53:01,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:53:01,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:53:01,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:53:01,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,349 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2023-12-16 06:53:01,350 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:53:01,351 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:53:01,351 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:53:01,351 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:53:01,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,373 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,390 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-12-16 06:53:01,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,402 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:53:01,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:53:01,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:53:01,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:53:01,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01" (1/1) ... [2023-12-16 06:53:01,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:53:01,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:53:01,433 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) [2023-12-16 06:53:01,439 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 [2023-12-16 06:53:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:53:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 06:53:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 06:53:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 06:53:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 06:53:01,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:53:01,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:53:01,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 06:53:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 06:53:01,528 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:53:01,530 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:53:01,690 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:53:01,715 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:53:01,715 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 06:53:01,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:53:01 BoogieIcfgContainer [2023-12-16 06:53:01,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:53:01,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:53:01,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:53:01,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:53:01,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:53:01" (1/3) ... [2023-12-16 06:53:01,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b47eafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:53:01, skipping insertion in model container [2023-12-16 06:53:01,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:53:01" (2/3) ... [2023-12-16 06:53:01,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b47eafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:53:01, skipping insertion in model container [2023-12-16 06:53:01,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:53:01" (3/3) ... [2023-12-16 06:53:01,722 INFO L112 eAbstractionObserver]: Analyzing ICFG array_range_init.i [2023-12-16 06:53:01,736 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:53:01,737 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:53:01,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:53:01,788 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;@1284f3b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:53:01,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:53:01,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:01,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-16 06:53:01,798 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:53:01,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-16 06:53:01,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:53:01,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:53:01,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1929175509, now seen corresponding path program 1 times [2023-12-16 06:53:01,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:53:01,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707419545] [2023-12-16 06:53:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:53:01,817 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 [2023-12-16 06:53:01,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:53:01,826 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) [2023-12-16 06:53:01,835 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 [2023-12-16 06:53:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:53:01,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 06:53:01,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:53:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:53:01,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:53:01,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:53:01,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707419545] [2023-12-16 06:53:01,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707419545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:53:01,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:53:01,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:53:01,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384266181] [2023-12-16 06:53:01,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:53:01,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 06:53:01,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:53:01,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 06:53:01,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:53:01,940 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:53:01,958 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2023-12-16 06:53:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 06:53:01,960 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-16 06:53:01,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:53:01,966 INFO L225 Difference]: With dead ends: 20 [2023-12-16 06:53:01,966 INFO L226 Difference]: Without dead ends: 10 [2023-12-16 06:53:01,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:53:01,975 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:53:01,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:53:01,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-16 06:53:02,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-16 06:53:02,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-12-16 06:53:02,004 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2023-12-16 06:53:02,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:53:02,004 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-12-16 06:53:02,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:02,005 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-12-16 06:53:02,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-16 06:53:02,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:53:02,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-16 06:53:02,015 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 [2023-12-16 06:53:02,208 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 [2023-12-16 06:53:02,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:53:02,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:53:02,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1939334240, now seen corresponding path program 1 times [2023-12-16 06:53:02,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:53:02,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331433817] [2023-12-16 06:53:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:53:02,211 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 [2023-12-16 06:53:02,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:53:02,212 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) [2023-12-16 06:53:02,214 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 [2023-12-16 06:53:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:53:02,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 06:53:02,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:53:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:53:02,263 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 06:53:02,263 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:53:02,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331433817] [2023-12-16 06:53:02,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331433817] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:53:02,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:53:02,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:53:02,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708068111] [2023-12-16 06:53:02,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:53:02,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:53:02,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:53:02,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:53:02,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:53:02,266 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:02,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:53:02,296 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2023-12-16 06:53:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:53:02,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-16 06:53:02,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:53:02,297 INFO L225 Difference]: With dead ends: 27 [2023-12-16 06:53:02,297 INFO L226 Difference]: Without dead ends: 18 [2023-12-16 06:53:02,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:53:02,300 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:53:02,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 9 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:53:02,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-16 06:53:02,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2023-12-16 06:53:02,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:02,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-12-16 06:53:02,312 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2023-12-16 06:53:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:53:02,312 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-12-16 06:53:02,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:02,313 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-16 06:53:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-16 06:53:02,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:53:02,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:53:02,319 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 [2023-12-16 06:53:02,516 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 [2023-12-16 06:53:02,517 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:53:02,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:53:02,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1508207766, now seen corresponding path program 1 times [2023-12-16 06:53:02,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:53:02,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82891852] [2023-12-16 06:53:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:53:02,518 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 [2023-12-16 06:53:02,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:53:02,520 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) [2023-12-16 06:53:02,521 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 [2023-12-16 06:53:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:53:02,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 06:53:02,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:53:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:53:02,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:53:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:53:02,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:53:02,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82891852] [2023-12-16 06:53:02,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82891852] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:53:02,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:53:02,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-16 06:53:02,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950131650] [2023-12-16 06:53:02,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:53:02,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:53:02,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:53:02,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:53:02,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:53:02,625 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:02,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:53:02,710 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2023-12-16 06:53:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:53:02,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-16 06:53:02,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:53:02,711 INFO L225 Difference]: With dead ends: 45 [2023-12-16 06:53:02,712 INFO L226 Difference]: Without dead ends: 36 [2023-12-16 06:53:02,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 06:53:02,713 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:53:02,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 17 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:53:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-16 06:53:02,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 20. [2023-12-16 06:53:02,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:02,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-12-16 06:53:02,718 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2023-12-16 06:53:02,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:53:02,718 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-12-16 06:53:02,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:02,718 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-12-16 06:53:02,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 06:53:02,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:53:02,719 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:53:02,724 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 [2023-12-16 06:53:02,921 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 [2023-12-16 06:53:02,921 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:53:02,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:53:02,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1383074466, now seen corresponding path program 1 times [2023-12-16 06:53:02,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:53:02,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841764392] [2023-12-16 06:53:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:53:02,923 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 [2023-12-16 06:53:02,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:53:02,927 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) [2023-12-16 06:53:02,944 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 [2023-12-16 06:53:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:53:02,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 06:53:02,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:53:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:53:03,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:53:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:53:03,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:53:03,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841764392] [2023-12-16 06:53:03,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841764392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:53:03,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:53:03,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-12-16 06:53:03,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671316967] [2023-12-16 06:53:03,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:53:03,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 06:53:03,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:53:03,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 06:53:03,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 06:53:03,199 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:53:03,465 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2023-12-16 06:53:03,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 06:53:03,467 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-16 06:53:03,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:53:03,467 INFO L225 Difference]: With dead ends: 86 [2023-12-16 06:53:03,468 INFO L226 Difference]: Without dead ends: 75 [2023-12-16 06:53:03,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:53:03,469 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 102 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:53:03,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 63 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:53:03,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-12-16 06:53:03,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 35. [2023-12-16 06:53:03,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-12-16 06:53:03,475 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 18 [2023-12-16 06:53:03,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:53:03,475 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-12-16 06:53:03,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-12-16 06:53:03,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-16 06:53:03,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:53:03,476 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:53:03,481 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 [2023-12-16 06:53:03,681 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 [2023-12-16 06:53:03,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:53:03,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:53:03,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1605505560, now seen corresponding path program 2 times [2023-12-16 06:53:03,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:53:03,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322864277] [2023-12-16 06:53:03,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 06:53:03,683 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 [2023-12-16 06:53:03,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:53:03,684 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) [2023-12-16 06:53:03,686 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 [2023-12-16 06:53:03,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 06:53:03,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:53:03,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 06:53:03,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:53:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:53:03,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:53:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:53:04,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:53:04,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322864277] [2023-12-16 06:53:04,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322864277] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:53:04,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:53:04,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2023-12-16 06:53:04,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735812214] [2023-12-16 06:53:04,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:53:04,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 06:53:04,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:53:04,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 06:53:04,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-12-16 06:53:04,186 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:05,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:53:05,230 INFO L93 Difference]: Finished difference Result 166 states and 180 transitions. [2023-12-16 06:53:05,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 06:53:05,231 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-16 06:53:05,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:53:05,233 INFO L225 Difference]: With dead ends: 166 [2023-12-16 06:53:05,233 INFO L226 Difference]: Without dead ends: 155 [2023-12-16 06:53:05,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=278, Invalid=478, Unknown=0, NotChecked=0, Total=756 [2023-12-16 06:53:05,234 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 422 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:53:05,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 273 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 06:53:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-12-16 06:53:05,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 65. [2023-12-16 06:53:05,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2023-12-16 06:53:05,244 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 33 [2023-12-16 06:53:05,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:53:05,244 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2023-12-16 06:53:05,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:05,245 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2023-12-16 06:53:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 06:53:05,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:53:05,246 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:53:05,251 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 [2023-12-16 06:53:05,448 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 [2023-12-16 06:53:05,449 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:53:05,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:53:05,450 INFO L85 PathProgramCache]: Analyzing trace with hash -888830760, now seen corresponding path program 3 times [2023-12-16 06:53:05,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:53:05,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196245768] [2023-12-16 06:53:05,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 06:53:05,450 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 [2023-12-16 06:53:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:53:05,451 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) [2023-12-16 06:53:05,453 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 [2023-12-16 06:53:05,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 06:53:05,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:53:05,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 06:53:05,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:53:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2023-12-16 06:53:05,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:53:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-12-16 06:53:05,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:53:05,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196245768] [2023-12-16 06:53:05,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196245768] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:53:05,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:53:05,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2023-12-16 06:53:05,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746498482] [2023-12-16 06:53:05,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:53:05,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 06:53:05,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:53:05,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 06:53:05,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 06:53:05,633 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:05,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:53:05,919 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2023-12-16 06:53:05,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 06:53:05,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-16 06:53:05,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:53:05,921 INFO L225 Difference]: With dead ends: 113 [2023-12-16 06:53:05,921 INFO L226 Difference]: Without dead ends: 107 [2023-12-16 06:53:05,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-12-16 06:53:05,922 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 89 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:53:05,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 35 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 06:53:05,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-16 06:53:05,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 77. [2023-12-16 06:53:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 76 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2023-12-16 06:53:05,932 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 63 [2023-12-16 06:53:05,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:53:05,933 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2023-12-16 06:53:05,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2023-12-16 06:53:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:53:05,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:53:05,934 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 18, 5, 1, 1, 1, 1, 1, 1] [2023-12-16 06:53:05,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 06:53:06,134 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 [2023-12-16 06:53:06,135 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:53:06,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:53:06,136 INFO L85 PathProgramCache]: Analyzing trace with hash 10357464, now seen corresponding path program 4 times [2023-12-16 06:53:06,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:53:06,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877715425] [2023-12-16 06:53:06,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 06:53:06,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 06:53:06,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:53:06,137 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) [2023-12-16 06:53:06,138 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 [2023-12-16 06:53:06,213 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 06:53:06,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:53:06,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 06:53:06,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:53:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 261 proven. 495 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 06:53:06,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:53:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 261 proven. 495 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 06:53:07,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:53:07,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877715425] [2023-12-16 06:53:07,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877715425] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:53:07,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:53:07,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2023-12-16 06:53:07,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636817559] [2023-12-16 06:53:07,562 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:53:07,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-16 06:53:07,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:53:07,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-16 06:53:07,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=1122, Unknown=0, NotChecked=0, Total=1560 [2023-12-16 06:53:07,565 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand has 40 states, 40 states have (on average 3.05) internal successors, (122), 39 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:12,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:53:12,682 INFO L93 Difference]: Finished difference Result 350 states and 382 transitions. [2023-12-16 06:53:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-16 06:53:12,683 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.05) internal successors, (122), 39 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-16 06:53:12,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:53:12,685 INFO L225 Difference]: With dead ends: 350 [2023-12-16 06:53:12,685 INFO L226 Difference]: Without dead ends: 327 [2023-12-16 06:53:12,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1158, Invalid=2148, Unknown=0, NotChecked=0, Total=3306 [2023-12-16 06:53:12,688 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 1557 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:53:12,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 1143 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 06:53:12,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-16 06:53:12,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 137. [2023-12-16 06:53:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0514705882352942) internal successors, (143), 136 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 143 transitions. [2023-12-16 06:53:12,702 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 143 transitions. Word has length 75 [2023-12-16 06:53:12,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:53:12,702 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 143 transitions. [2023-12-16 06:53:12,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.05) internal successors, (122), 39 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:53:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 143 transitions. [2023-12-16 06:53:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-16 06:53:12,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:53:12,704 INFO L195 NwaCegarLoop]: trace histogram [43, 43, 38, 5, 1, 1, 1, 1, 1, 1] [2023-12-16 06:53:12,713 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 [2023-12-16 06:53:12,905 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 [2023-12-16 06:53:12,905 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:53:12,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:53:12,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1900756904, now seen corresponding path program 5 times [2023-12-16 06:53:12,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 06:53:12,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164054759] [2023-12-16 06:53:12,907 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 06:53:12,907 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 [2023-12-16 06:53:12,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 06:53:12,908 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) [2023-12-16 06:53:12,912 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 [2023-12-16 06:53:13,308 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 44 check-sat command(s) [2023-12-16 06:53:13,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 06:53:13,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 66 conjunts are in the unsatisfiable core [2023-12-16 06:53:13,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:53:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 541 proven. 2185 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 06:53:14,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:53:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2752 backedges. 541 proven. 2185 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-16 06:53:23,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 06:53:23,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164054759] [2023-12-16 06:53:23,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164054759] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:53:23,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 06:53:23,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 64] total 103 [2023-12-16 06:53:23,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880007943] [2023-12-16 06:53:23,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 06:53:23,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2023-12-16 06:53:23,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 06:53:23,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2023-12-16 06:53:23,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2686, Invalid=8026, Unknown=0, NotChecked=0, Total=10712 [2023-12-16 06:53:23,147 INFO L87 Difference]: Start difference. First operand 137 states and 143 transitions. Second operand has 104 states, 104 states have (on average 2.326923076923077) internal successors, (242), 103 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 06:54:09,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-12-16 06:54:09,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2630 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=7803, Invalid=18929, Unknown=0, NotChecked=0, Total=26732 [2023-12-16 06:54:09,456 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 695 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5899 mSolverCounterSat, 671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 6570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 671 IncrementalHoareTripleChecker+Valid, 5899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:54:09,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1 Invalid, 6570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [671 Valid, 5899 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-16 06:54:09,458 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:54:09,462 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 [2023-12-16 06:54:09,483 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 [2023-12-16 06:54:09,495 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 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:54:09,658 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 [2023-12-16 06:54:09,659 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (137states) and FLOYD_HOARE automaton (currently 102 states, 104 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 164 known predicates. [2023-12-16 06:54:09,663 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2023-12-16 06:54:09,665 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:54:09,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:54:09 BoogieIcfgContainer [2023-12-16 06:54:09,670 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:54:09,670 INFO L158 Benchmark]: Toolchain (without parser) took 68605.85ms. Allocated memory is still 309.3MB. Free memory was 260.5MB in the beginning and 215.3MB in the end (delta: 45.2MB). Peak memory consumption was 45.7MB. Max. memory is 8.0GB. [2023-12-16 06:54:09,670 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 205.5MB. Free memory is still 155.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:54:09,671 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.92ms. Allocated memory is still 309.3MB. Free memory was 260.5MB in the beginning and 249.3MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 06:54:09,671 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.04ms. Allocated memory is still 309.3MB. Free memory was 249.3MB in the beginning and 247.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 06:54:09,671 INFO L158 Benchmark]: Boogie Preprocessor took 55.24ms. Allocated memory is still 309.3MB. Free memory was 247.5MB in the beginning and 245.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 06:54:09,671 INFO L158 Benchmark]: RCFGBuilder took 308.98ms. Allocated memory is still 309.3MB. Free memory was 245.8MB in the beginning and 233.6MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 06:54:09,672 INFO L158 Benchmark]: TraceAbstraction took 67952.59ms. Allocated memory is still 309.3MB. Free memory was 232.9MB in the beginning and 215.3MB in the end (delta: 17.6MB). Peak memory consumption was 18.5MB. Max. memory is 8.0GB. [2023-12-16 06:54:09,674 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 205.5MB. Free memory is still 155.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 251.92ms. Allocated memory is still 309.3MB. Free memory was 260.5MB in the beginning and 249.3MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.04ms. Allocated memory is still 309.3MB. Free memory was 249.3MB in the beginning and 247.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 55.24ms. Allocated memory is still 309.3MB. Free memory was 247.5MB in the beginning and 245.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 308.98ms. Allocated memory is still 309.3MB. Free memory was 245.8MB in the beginning and 233.6MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 67952.59ms. Allocated memory is still 309.3MB. Free memory was 232.9MB in the beginning and 215.3MB in the end (delta: 17.6MB). Peak memory consumption was 18.5MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (137states) and FLOYD_HOARE automaton (currently 102 states, 104 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 164 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.9s, OverallIterations: 8, TraceHistogramMax: 43, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 53.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2904 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2904 mSDsluCounter, 1552 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1410 mSDsCounter, 1227 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8600 IncrementalHoareTripleChecker+Invalid, 9827 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1227 mSolverCounterUnsat, 142 mSDtfsCounter, 8600 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 763 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2834 ImplicationChecksByTransitivity, 56.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=7, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 372 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 345 NumberOfCodeBlocks, 297 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 664 ConstructedInterpolants, 0 QuantifiedInterpolants, 4061 SizeOfPredicates, 1 NumberOfNonLiveVariables, 768 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 2816/8412 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