/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_dependencies_file-89.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-22 20:28:22,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-22 20:28:22,514 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 20:28:22,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-22 20:28:22,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-22 20:28:22,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-22 20:28:22,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-22 20:28:22,533 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-22 20:28:22,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-22 20:28:22,534 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-22 20:28:22,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-22 20:28:22,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-22 20:28:22,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-22 20:28:22,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-22 20:28:22,535 INFO L153 SettingsManager]: * Use SBE=true [2023-12-22 20:28:22,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-22 20:28:22,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-22 20:28:22,536 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-22 20:28:22,536 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-22 20:28:22,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-22 20:28:22,537 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-22 20:28:22,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-22 20:28:22,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-22 20:28:22,538 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-22 20:28:22,538 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-22 20:28:22,538 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-22 20:28:22,539 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-22 20:28:22,539 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-22 20:28:22,539 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-22 20:28:22,539 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-22 20:28:22,540 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-22 20:28:22,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-22 20:28:22,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-22 20:28:22,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-22 20:28:22,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 20:28:22,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-22 20:28:22,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-22 20:28:22,541 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-22 20:28:22,541 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-22 20:28:22,542 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-22 20:28:22,542 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-22 20:28:22,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-22 20:28:22,542 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-22 20:28:22,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-22 20:28:22,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-22 20:28:22,543 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-22 20:28:22,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-22 20:28:22,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-22 20:28:22,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-22 20:28:22,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-22 20:28:22,695 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-22 20:28:22,696 INFO L274 PluginConnector]: CDTParser initialized [2023-12-22 20:28:22,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-89.i [2023-12-22 20:28:23,682 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-22 20:28:23,832 INFO L384 CDTParser]: Found 1 translation units. [2023-12-22 20:28:23,832 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_dependencies_file-89.i [2023-12-22 20:28:23,839 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf35b56f/befd7117938c4257a3d629fda9911d0c/FLAGc43fb34c6 [2023-12-22 20:28:23,851 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edf35b56f/befd7117938c4257a3d629fda9911d0c [2023-12-22 20:28:23,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-22 20:28:23,854 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-22 20:28:23,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-22 20:28:23,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-22 20:28:23,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-22 20:28:23,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:28:23" (1/1) ... [2023-12-22 20:28:23,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3760a709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:23, skipping insertion in model container [2023-12-22 20:28:23,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:28:23" (1/1) ... [2023-12-22 20:28:23,884 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-22 20:28:23,989 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_dependencies_file-89.i[919,932] [2023-12-22 20:28:24,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 20:28:24,054 INFO L202 MainTranslator]: Completed pre-run [2023-12-22 20:28:24,063 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_dependencies_file-89.i[919,932] [2023-12-22 20:28:24,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-22 20:28:24,094 INFO L206 MainTranslator]: Completed translation [2023-12-22 20:28:24,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24 WrapperNode [2023-12-22 20:28:24,095 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-22 20:28:24,096 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-22 20:28:24,096 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-22 20:28:24,096 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-22 20:28:24,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24" (1/1) ... [2023-12-22 20:28:24,108 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24" (1/1) ... [2023-12-22 20:28:24,131 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 110 [2023-12-22 20:28:24,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-22 20:28:24,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-22 20:28:24,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-22 20:28:24,133 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-22 20:28:24,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24" (1/1) ... [2023-12-22 20:28:24,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24" (1/1) ... [2023-12-22 20:28:24,148 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24" (1/1) ... [2023-12-22 20:28:24,162 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 20:28:24,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24" (1/1) ... [2023-12-22 20:28:24,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24" (1/1) ... [2023-12-22 20:28:24,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24" (1/1) ... [2023-12-22 20:28:24,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24" (1/1) ... [2023-12-22 20:28:24,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24" (1/1) ... [2023-12-22 20:28:24,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24" (1/1) ... [2023-12-22 20:28:24,183 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-22 20:28:24,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-22 20:28:24,184 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-22 20:28:24,184 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-22 20:28:24,185 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24" (1/1) ... [2023-12-22 20:28:24,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-22 20:28:24,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-22 20:28:24,211 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 20:28:24,274 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 20:28:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-22 20:28:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-22 20:28:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-22 20:28:24,281 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-22 20:28:24,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-22 20:28:24,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-22 20:28:24,334 INFO L241 CfgBuilder]: Building ICFG [2023-12-22 20:28:24,336 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-22 20:28:24,872 INFO L282 CfgBuilder]: Performing block encoding [2023-12-22 20:28:24,959 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-22 20:28:24,959 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-22 20:28:24,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:28:24 BoogieIcfgContainer [2023-12-22 20:28:24,960 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-22 20:28:24,961 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-22 20:28:24,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-22 20:28:24,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-22 20:28:24,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:28:23" (1/3) ... [2023-12-22 20:28:24,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1497e455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:28:24, skipping insertion in model container [2023-12-22 20:28:24,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:28:24" (2/3) ... [2023-12-22 20:28:24,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1497e455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:28:24, skipping insertion in model container [2023-12-22 20:28:24,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:28:24" (3/3) ... [2023-12-22 20:28:24,965 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_dependencies_file-89.i [2023-12-22 20:28:24,978 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-22 20:28:24,978 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-22 20:28:25,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-22 20:28:25,027 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;@59a69b6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-22 20:28:25,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-22 20:28:25,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 30 states have (on average 1.6) internal successors, (48), 31 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-22 20:28:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 20:28:25,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 20:28:25,050 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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 20:28:25,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 20:28:25,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 20:28:25,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1575836394, now seen corresponding path program 1 times [2023-12-22 20:28:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 20:28:25,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811298177] [2023-12-22 20:28:25,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 20:28:25,068 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 20:28:25,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 20:28:25,070 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 20:28:25,073 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 20:28:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 20:28:25,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-22 20:28:25,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 20:28:25,285 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-22 20:28:25,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 20:28:25,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 20:28:25,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811298177] [2023-12-22 20:28:25,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811298177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 20:28:25,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 20:28:25,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 20:28:25,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354614942] [2023-12-22 20:28:25,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 20:28:25,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-22 20:28:25,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 20:28:25,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-22 20:28:25,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-22 20:28:25,317 INFO L87 Difference]: Start difference. First operand has 45 states, 30 states have (on average 1.6) internal successors, (48), 31 states have internal predecessors, (48), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-22 20:28:25,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 20:28:25,433 INFO L93 Difference]: Finished difference Result 85 states and 150 transitions. [2023-12-22 20:28:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-22 20:28:25,446 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2023-12-22 20:28:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 20:28:25,451 INFO L225 Difference]: With dead ends: 85 [2023-12-22 20:28:25,451 INFO L226 Difference]: Without dead ends: 41 [2023-12-22 20:28:25,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 77 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 20:28:25,456 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 20:28:25,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 20:28:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-22 20:28:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-12-22 20:28:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-22 20:28:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 62 transitions. [2023-12-22 20:28:25,521 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 62 transitions. Word has length 78 [2023-12-22 20:28:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 20:28:25,521 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 62 transitions. [2023-12-22 20:28:25,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-12-22 20:28:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 62 transitions. [2023-12-22 20:28:25,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 20:28:25,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 20:28:25,527 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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 20:28:25,535 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 20:28:25,734 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 20:28:25,736 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 20:28:25,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 20:28:25,736 INFO L85 PathProgramCache]: Analyzing trace with hash 944740330, now seen corresponding path program 1 times [2023-12-22 20:28:25,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 20:28:25,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161981754] [2023-12-22 20:28:25,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 20:28:25,737 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 20:28:25,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 20:28:25,739 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 20:28:25,741 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 20:28:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 20:28:25,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-22 20:28:25,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-22 20:28:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-22 20:28:26,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-22 20:28:26,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-22 20:28:26,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161981754] [2023-12-22 20:28:26,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161981754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-22 20:28:26,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-22 20:28:26,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-22 20:28:26,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585077990] [2023-12-22 20:28:26,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-22 20:28:26,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-22 20:28:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-22 20:28:26,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-22 20:28:26,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-22 20:28:26,134 INFO L87 Difference]: Start difference. First operand 41 states and 62 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-22 20:28:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-22 20:28:26,280 INFO L93 Difference]: Finished difference Result 80 states and 121 transitions. [2023-12-22 20:28:26,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-22 20:28:26,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78 [2023-12-22 20:28:26,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-22 20:28:26,294 INFO L225 Difference]: With dead ends: 80 [2023-12-22 20:28:26,294 INFO L226 Difference]: Without dead ends: 40 [2023-12-22 20:28:26,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 20:28:26,295 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-22 20:28:26,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 51 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-22 20:28:26,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-22 20:28:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-22 20:28:26,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-22 20:28:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 57 transitions. [2023-12-22 20:28:26,305 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 57 transitions. Word has length 78 [2023-12-22 20:28:26,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-22 20:28:26,306 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 57 transitions. [2023-12-22 20:28:26,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-22 20:28:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 57 transitions. [2023-12-22 20:28:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-22 20:28:26,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-22 20:28:26,310 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 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 20:28:26,334 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 20:28:26,511 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 20:28:26,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-22 20:28:26,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-22 20:28:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1183008748, now seen corresponding path program 1 times [2023-12-22 20:28:26,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-22 20:28:26,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746221967] [2023-12-22 20:28:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-22 20:28:26,513 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 20:28:26,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-22 20:28:26,514 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 20:28:26,516 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 20:28:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-22 20:28:26,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-22 20:28:26,701 INFO L285 TraceCheckSpWp]: Computing forward predicates...