/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/hardness-nfm22/hardness_codestructure_normal_file-30.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 20:56:16,943 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 20:56:16,981 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-22 20:56:16,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 20:56:16,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 20:56:16,997 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 20:56:16,998 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 20:56:16,998 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 20:56:16,999 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 20:56:16,999 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 20:56:16,999 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 20:56:16,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 20:56:17,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 20:56:17,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 20:56:17,000 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 20:56:17,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 20:56:17,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 20:56:17,001 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 20:56:17,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 20:56:17,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 20:56:17,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 20:56:17,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 20:56:17,002 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 20:56:17,002 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 20:56:17,002 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 20:56:17,002 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 20:56:17,003 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 20:56:17,003 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 20:56:17,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 20:56:17,003 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 20:56:17,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 20:56:17,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 20:56:17,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 20:56:17,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 20:56:17,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 20:56:17,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 20:56:17,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 20:56:17,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 20:56:17,004 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 20:56:17,005 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 20:56:17,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 20:56:17,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 20:56:17,005 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 20:56:17,005 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 20:56:17,005 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 20:56:17,005 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 20:56:17,005 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 20:56:17,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 20:56:17,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 20:56:17,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 20:56:17,160 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 20:56:17,161 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 20:56:17,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_normal_file-30.i [2023-12-22 20:56:18,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 20:56:18,452 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 20:56:18,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_normal_file-30.i [2023-12-22 20:56:18,458 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee92b031/0af9254ab2c74b1dbc5f905b8f64806e/FLAGa2ab8244f [2023-12-22 20:56:18,480 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee92b031/0af9254ab2c74b1dbc5f905b8f64806e [2023-12-22 20:56:18,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 20:56:18,483 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 20:56:18,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 20:56:18,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 20:56:18,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 20:56:18,488 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,489 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0dab12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18, skipping insertion in model container [2023-12-22 20:56:18,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,522 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 20:56:18,613 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_normal_file-30.i[913,926] [2023-12-22 20:56:18,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 20:56:18,660 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 20:56:18,669 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_normal_file-30.i[913,926] [2023-12-22 20:56:18,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 20:56:18,709 INFO L206 MainTranslator]: Completed translation [2023-12-22 20:56:18,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18 WrapperNode [2023-12-22 20:56:18,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 20:56:18,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 20:56:18,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 20:56:18,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 20:56:18,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,746 INFO L138 Inliner]: procedures = 27, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 133 [2023-12-22 20:56:18,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 20:56:18,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 20:56:18,747 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 20:56:18,748 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 20:56:18,756 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,760 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,775 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-22 20:56:18,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,783 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,786 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,787 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 20:56:18,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 20:56:18,792 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 20:56:18,792 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 20:56:18,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18" (1/1) ... [2023-12-22 20:56:18,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 20:56:18,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 20:56:18,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-22 20:56:18,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-22 20:56:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 20:56:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 20:56:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-22 20:56:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-22 20:56:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 20:56:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 20:56:18,934 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 20:56:18,936 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 20:56:30,077 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 20:56:30,140 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 20:56:30,140 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 20:56:30,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:56:30 BoogieIcfgContainer [2023-12-22 20:56:30,140 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 20:56:30,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 20:56:30,142 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 20:56:30,178 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 20:56:30,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:56:18" (1/3) ... [2023-12-22 20:56:30,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4620a5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:56:30, skipping insertion in model container [2023-12-22 20:56:30,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:18" (2/3) ... [2023-12-22 20:56:30,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4620a5dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:56:30, skipping insertion in model container [2023-12-22 20:56:30,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:56:30" (3/3) ... [2023-12-22 20:56:30,181 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_normal_file-30.i [2023-12-22 20:56:30,197 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 20:56:30,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 20:56:30,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 20:56:30,278 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;@60669262, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 20:56:30,278 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 20:56:30,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 36 states have internal predecessors, (53), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-22 20:56:30,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-22 20:56:30,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 20:56:30,306 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 20:56:30,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 20:56:30,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 20:56:30,312 INFO L85 PathProgramCache]: Analyzing trace with hash 341585577, now seen corresponding path program 1 times [2023-12-22 20:56:30,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 20:56:30,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072626344] [2023-12-22 20:56:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 20:56:30,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:56:30,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 20:56:30,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 20:56:30,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-22 20:56:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 20:56:30,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 20:56:30,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 20:56:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2023-12-22 20:56:30,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 20:56:30,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 20:56:30,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072626344] [2023-12-22 20:56:30,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072626344] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 20:56:30,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 20:56:30,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 20:56:30,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805852281] [2023-12-22 20:56:30,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 20:56:30,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 20:56:30,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 20:56:30,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 20:56:30,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 20:56:30,872 INFO L87 Difference]: Start difference. First operand has 56 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 36 states have internal predecessors, (53), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-22 20:56:35,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 20:56:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 20:56:35,058 INFO L93 Difference]: Finished difference Result 109 states and 194 transitions. [2023-12-22 20:56:35,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 20:56:35,118 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 114 [2023-12-22 20:56:35,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 20:56:35,123 INFO L225 Difference]: With dead ends: 109 [2023-12-22 20:56:35,123 INFO L226 Difference]: Without dead ends: 54 [2023-12-22 20:56:35,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 20:56:35,127 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-22 20:56:35,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-22 20:56:35,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-22 20:56:35,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-22 20:56:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-22 20:56:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 84 transitions. [2023-12-22 20:56:35,160 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 84 transitions. Word has length 114 [2023-12-22 20:56:35,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 20:56:35,160 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 84 transitions. [2023-12-22 20:56:35,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-22 20:56:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 84 transitions. [2023-12-22 20:56:35,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-22 20:56:35,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 20:56:35,163 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 20:56:35,177 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 [2023-12-22 20:56:35,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:56:35,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 20:56:35,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 20:56:35,372 INFO L85 PathProgramCache]: Analyzing trace with hash 302460573, now seen corresponding path program 1 times [2023-12-22 20:56:35,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 20:56:35,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364608083] [2023-12-22 20:56:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 20:56:35,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:56:35,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 20:56:35,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 20:56:35,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-22 20:56:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 20:56:35,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-22 20:56:35,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 20:56:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 248 proven. 72 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-22 20:56:37,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-22 20:56:37,750 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-22 20:56:37,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 20:56:37,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364608083] [2023-12-22 20:56:37,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364608083] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-22 20:56:37,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-22 20:56:37,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 12 [2023-12-22 20:56:37,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739004873] [2023-12-22 20:56:37,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-22 20:56:37,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-22 20:56:37,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 20:56:37,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-22 20:56:37,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-12-22 20:56:37,754 INFO L87 Difference]: Start difference. First operand 54 states and 84 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 3 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-12-22 20:56:43,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 20:56:47,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.87s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 20:56:51,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 20:56:52,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 20:56:52,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 20:56:52,734 INFO L93 Difference]: Finished difference Result 126 states and 188 transitions. [2023-12-22 20:56:52,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-22 20:56:52,734 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 3 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 114 [2023-12-22 20:56:52,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 20:56:52,736 INFO L225 Difference]: With dead ends: 126 [2023-12-22 20:56:52,737 INFO L226 Difference]: Without dead ends: 73 [2023-12-22 20:56:52,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2023-12-22 20:56:52,738 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 159 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 92 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-12-22 20:56:52,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 183 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 197 Invalid, 2 Unknown, 0 Unchecked, 14.4s Time] [2023-12-22 20:56:52,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-22 20:56:52,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2023-12-22 20:56:52,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 43 states have internal predecessors, (53), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-22 20:56:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 97 transitions. [2023-12-22 20:56:52,754 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 97 transitions. Word has length 114 [2023-12-22 20:56:52,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 20:56:52,754 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 97 transitions. [2023-12-22 20:56:52,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 3 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2023-12-22 20:56:52,755 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 97 transitions. [2023-12-22 20:56:52,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-22 20:56:52,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 20:56:52,756 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 20:56:52,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-22 20:56:52,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:56:52,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 20:56:52,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 20:56:52,971 INFO L85 PathProgramCache]: Analyzing trace with hash 995345702, now seen corresponding path program 1 times [2023-12-22 20:56:52,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 20:56:52,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283928401] [2023-12-22 20:56:52,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 20:56:52,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:56:52,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 20:56:52,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 20:56:52,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-22 20:56:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 20:56:53,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 20:56:53,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 20:56:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-22 20:56:53,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 20:56:53,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 20:56:53,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283928401] [2023-12-22 20:56:53,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283928401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 20:56:53,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 20:56:53,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-22 20:56:53,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258906680] [2023-12-22 20:56:53,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 20:56:53,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 20:56:53,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 20:56:53,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 20:56:53,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 20:56:53,391 INFO L87 Difference]: Start difference. First operand 68 states and 97 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-22 20:56:57,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 20:57:02,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 20:57:04,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 20:57:09,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 20:57:14,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 20:57:18,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-22 20:57:18,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 20:57:18,252 INFO L93 Difference]: Finished difference Result 168 states and 234 transitions. [2023-12-22 20:57:18,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 20:57:18,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 116 [2023-12-22 20:57:18,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 20:57:18,255 INFO L225 Difference]: With dead ends: 168 [2023-12-22 20:57:18,256 INFO L226 Difference]: Without dead ends: 107 [2023-12-22 20:57:18,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 20:57:18,257 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 42 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2023-12-22 20:57:18,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 161 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 5 Unknown, 0 Unchecked, 24.8s Time] [2023-12-22 20:57:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-22 20:57:18,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2023-12-22 20:57:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 69 states have internal predecessors, (85), 30 states have call successors, (30), 6 states have call predecessors, (30), 6 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-22 20:57:18,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 145 transitions. [2023-12-22 20:57:18,278 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 145 transitions. Word has length 116 [2023-12-22 20:57:18,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 20:57:18,278 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 145 transitions. [2023-12-22 20:57:18,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-22 20:57:18,279 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 145 transitions. [2023-12-22 20:57:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-22 20:57:18,280 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 20:57:18,280 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-22 20:57:18,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-22 20:57:18,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:57:18,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 20:57:18,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 20:57:18,495 INFO L85 PathProgramCache]: Analyzing trace with hash 185999076, now seen corresponding path program 1 times [2023-12-22 20:57:18,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 20:57:18,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867306047] [2023-12-22 20:57:18,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 20:57:18,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-22 20:57:18,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 20:57:18,532 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-22 20:57:18,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-22 20:57:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 20:57:18,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-22 20:57:18,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 20:58:36,392 WARN L293 SmtUtils]: Spent 23.62s on a formula simplification that was a NOOP. DAG size: 98 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)