/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-64bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 17:33:13,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 17:33:13,783 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-12-26 17:33:13,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 17:33:13,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 17:33:13,814 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 17:33:13,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 17:33:13,815 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 17:33:13,815 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 17:33:13,818 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 17:33:13,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 17:33:13,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 17:33:13,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 17:33:13,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 17:33:13,820 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 17:33:13,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 17:33:13,821 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 17:33:13,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 17:33:13,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 17:33:13,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 17:33:13,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 17:33:13,822 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 17:33:13,822 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 17:33:13,823 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 17:33:13,823 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 17:33:13,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 17:33:13,823 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 17:33:13,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 17:33:13,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 17:33:13,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 17:33:13,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 17:33:13,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 17:33:13,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 17:33:13,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 17:33:13,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 17:33:13,825 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 17:33:13,825 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 17:33:13,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 17:33:13,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 17:33:13,825 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 17:33:13,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 17:33:13,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 17:33:13,826 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 17:33:13,826 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 17:33:14,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 17:33:14,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 17:33:14,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 17:33:14,044 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 17:33:14,044 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 17:33:14,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c [2023-12-26 17:33:15,093 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 17:33:15,366 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 17:33:15,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c [2023-12-26 17:33:15,381 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cd5f71f5/9ff0d1522af8412a853fdf5cd754c93e/FLAG5e368585b [2023-12-26 17:33:15,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cd5f71f5/9ff0d1522af8412a853fdf5cd754c93e [2023-12-26 17:33:15,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 17:33:15,397 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 17:33:15,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 17:33:15,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 17:33:15,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 17:33:15,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 05:33:15" (1/1) ... [2023-12-26 17:33:15,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4663c7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:15, skipping insertion in model container [2023-12-26 17:33:15,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 05:33:15" (1/1) ... [2023-12-26 17:33:15,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 17:33:15,593 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c[1260,1273] [2023-12-26 17:33:15,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 17:33:15,819 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 17:33:15,826 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p7.c[1260,1273] [2023-12-26 17:33:16,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 17:33:16,026 INFO L206 MainTranslator]: Completed translation [2023-12-26 17:33:16,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16 WrapperNode [2023-12-26 17:33:16,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 17:33:16,028 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 17:33:16,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 17:33:16,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 17:33:16,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16" (1/1) ... [2023-12-26 17:33:16,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16" (1/1) ... [2023-12-26 17:33:16,131 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1841 [2023-12-26 17:33:16,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 17:33:16,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 17:33:16,132 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 17:33:16,132 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 17:33:16,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16" (1/1) ... [2023-12-26 17:33:16,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16" (1/1) ... [2023-12-26 17:33:16,151 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16" (1/1) ... [2023-12-26 17:33:16,176 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]. [2023-12-26 17:33:16,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16" (1/1) ... [2023-12-26 17:33:16,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16" (1/1) ... [2023-12-26 17:33:16,202 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16" (1/1) ... [2023-12-26 17:33:16,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16" (1/1) ... [2023-12-26 17:33:16,213 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16" (1/1) ... [2023-12-26 17:33:16,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16" (1/1) ... [2023-12-26 17:33:16,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 17:33:16,231 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 17:33:16,231 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 17:33:16,231 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 17:33:16,231 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16" (1/1) ... [2023-12-26 17:33:16,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 17:33:16,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 17:33:16,255 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) [2023-12-26 17:33:16,297 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 [2023-12-26 17:33:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 17:33:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 17:33:16,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 17:33:16,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 17:33:16,560 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 17:33:16,562 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 17:33:18,233 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 17:33:18,297 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 17:33:18,297 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 17:33:18,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 05:33:18 BoogieIcfgContainer [2023-12-26 17:33:18,298 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 17:33:18,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 17:33:18,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 17:33:18,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 17:33:18,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 05:33:15" (1/3) ... [2023-12-26 17:33:18,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df7c476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 05:33:18, skipping insertion in model container [2023-12-26 17:33:18,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 05:33:16" (2/3) ... [2023-12-26 17:33:18,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df7c476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 05:33:18, skipping insertion in model container [2023-12-26 17:33:18,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 05:33:18" (3/3) ... [2023-12-26 17:33:18,305 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p7.c [2023-12-26 17:33:18,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 17:33:18,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 17:33:18,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 17:33:18,359 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;@6f6d7908, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 17:33:18,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 17:33:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:33:18,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-26 17:33:18,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 17:33:18,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-26 17:33:18,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 17:33:18,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 17:33:18,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-26 17:33:18,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 17:33:18,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267125157] [2023-12-26 17:33:18,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 17:33:18,392 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 [2023-12-26 17:33:18,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 17:33:18,418 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) [2023-12-26 17:33:18,419 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 [2023-12-26 17:33:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 17:33:18,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-26 17:33:18,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 17:33:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:33:18,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 17:33:18,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 17:33:18,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267125157] [2023-12-26 17:33:18,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267125157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 17:33:18,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 17:33:18,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-26 17:33:18,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060294232] [2023-12-26 17:33:18,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 17:33:18,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 17:33:18,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 17:33:18,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 17:33:18,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 17:33:18,974 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:33:19,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 17:33:19,189 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-26 17:33:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 17:33:19,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-26 17:33:19,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 17:33:19,195 INFO L225 Difference]: With dead ends: 16 [2023-12-26 17:33:19,195 INFO L226 Difference]: Without dead ends: 9 [2023-12-26 17:33:19,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-26 17:33:19,200 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-26 17:33:19,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-26 17:33:19,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-26 17:33:19,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-26 17:33:19,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:33:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-26 17:33:19,222 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-26 17:33:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 17:33:19,222 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-26 17:33:19,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:33:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-26 17:33:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-26 17:33:19,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 17:33:19,223 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-26 17:33:19,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-26 17:33:19,426 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 [2023-12-26 17:33:19,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 17:33:19,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 17:33:19,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-26 17:33:19,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 17:33:19,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424566458] [2023-12-26 17:33:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 17:33:19,430 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 [2023-12-26 17:33:19,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 17:33:19,431 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) [2023-12-26 17:33:19,447 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 [2023-12-26 17:33:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 17:33:23,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-26 17:33:23,209 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 17:33:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:33:23,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 17:33:23,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:33:23,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 17:33:23,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424566458] [2023-12-26 17:33:23,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424566458] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 17:33:23,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 17:33:23,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-26 17:33:23,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011139445] [2023-12-26 17:33:23,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 17:33:23,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-26 17:33:23,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 17:33:23,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-26 17:33:23,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-26 17:33:23,485 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:33:24,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 17:33:24,841 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2023-12-26 17:33:24,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-26 17:33:24,841 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-26 17:33:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 17:33:24,842 INFO L225 Difference]: With dead ends: 17 [2023-12-26 17:33:24,842 INFO L226 Difference]: Without dead ends: 15 [2023-12-26 17:33:24,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-12-26 17:33:24,843 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-26 17:33:24,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-26 17:33:24,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-26 17:33:24,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-12-26 17:33:24,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:33:24,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-12-26 17:33:24,846 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2023-12-26 17:33:24,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 17:33:24,846 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-12-26 17:33:24,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:33:24,847 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-12-26 17:33:24,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-26 17:33:24,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 17:33:24,847 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2023-12-26 17:33:24,859 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 [2023-12-26 17:33:25,056 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 [2023-12-26 17:33:25,057 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 17:33:25,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 17:33:25,057 INFO L85 PathProgramCache]: Analyzing trace with hash -57678563, now seen corresponding path program 2 times [2023-12-26 17:33:25,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 17:33:25,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997893229] [2023-12-26 17:33:25,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 17:33:25,062 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 [2023-12-26 17:33:25,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 17:33:25,064 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) [2023-12-26 17:33:25,065 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 [2023-12-26 17:34:03,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 17:34:03,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 17:34:04,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 4539 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-26 17:34:04,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 17:34:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:34:04,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 17:34:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:34:05,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 17:34:05,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997893229] [2023-12-26 17:34:05,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997893229] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-26 17:34:05,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 17:34:05,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-26 17:34:05,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404840053] [2023-12-26 17:34:05,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 17:34:05,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-26 17:34:05,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 17:34:05,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-26 17:34:05,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-26 17:34:05,628 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:34:07,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 17:34:07,147 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2023-12-26 17:34:07,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-26 17:34:07,148 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-26 17:34:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 17:34:07,148 INFO L225 Difference]: With dead ends: 20 [2023-12-26 17:34:07,148 INFO L226 Difference]: Without dead ends: 18 [2023-12-26 17:34:07,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-26 17:34:07,149 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-26 17:34:07,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 19 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-26 17:34:07,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-26 17:34:07,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2023-12-26 17:34:07,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:34:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-12-26 17:34:07,153 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2023-12-26 17:34:07,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 17:34:07,154 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-12-26 17:34:07,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-26 17:34:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-12-26 17:34:07,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-26 17:34:07,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 17:34:07,154 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2023-12-26 17:34:07,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-26 17:34:07,364 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 [2023-12-26 17:34:07,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 17:34:07,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 17:34:07,365 INFO L85 PathProgramCache]: Analyzing trace with hash -310375345, now seen corresponding path program 3 times [2023-12-26 17:34:07,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 17:34:07,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402393551] [2023-12-26 17:34:07,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-26 17:34:07,372 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 [2023-12-26 17:34:07,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 17:34:07,373 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) [2023-12-26 17:34:07,392 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 [2023-12-26 17:34:51,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-26 17:34:51,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 17:34:51,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 6005 conjuncts, 1117 conjunts are in the unsatisfiable core [2023-12-26 17:34:51,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 17:36:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-26 17:36:51,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-26 17:47:33,705 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-26 17:47:33,737 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-26 17:47:33,737 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-26 17:47:33,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-26 17:47:33,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 17:47:33,909 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 17 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-15-2-3-2-4-15-2-15-2-15-1 context. [2023-12-26 17:47:33,913 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-12-26 17:47:33,915 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-26 17:47:33,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.12 05:47:33 BoogieIcfgContainer [2023-12-26 17:47:33,917 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-26 17:47:33,917 INFO L158 Benchmark]: Toolchain (without parser) took 858520.56ms. Allocated memory was 173.0MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 108.1MB in the beginning and 437.4MB in the end (delta: -329.3MB). Peak memory consumption was 749.1MB. Max. memory is 8.0GB. [2023-12-26 17:47:33,917 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 122.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 17:47:33,918 INFO L158 Benchmark]: CACSL2BoogieTranslator took 628.40ms. Allocated memory was 173.0MB in the beginning and 272.6MB in the end (delta: 99.6MB). Free memory was 108.1MB in the beginning and 220.1MB in the end (delta: -112.0MB). Peak memory consumption was 72.4MB. Max. memory is 8.0GB. [2023-12-26 17:47:33,918 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.41ms. Allocated memory is still 272.6MB. Free memory was 220.1MB in the beginning and 206.0MB in the end (delta: 14.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-26 17:47:33,918 INFO L158 Benchmark]: Boogie Preprocessor took 98.65ms. Allocated memory is still 272.6MB. Free memory was 206.0MB in the beginning and 188.7MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-26 17:47:33,919 INFO L158 Benchmark]: RCFGBuilder took 2067.23ms. Allocated memory was 272.6MB in the beginning and 404.8MB in the end (delta: 132.1MB). Free memory was 188.7MB in the beginning and 297.8MB in the end (delta: -109.1MB). Peak memory consumption was 140.9MB. Max. memory is 8.0GB. [2023-12-26 17:47:33,919 INFO L158 Benchmark]: TraceAbstraction took 855617.19ms. Allocated memory was 404.8MB in the beginning and 1.2GB in the end (delta: 803.2MB). Free memory was 297.2MB in the beginning and 437.4MB in the end (delta: -140.1MB). Peak memory consumption was 706.1MB. Max. memory is 8.0GB. [2023-12-26 17:47:33,933 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 173.0MB. Free memory is still 122.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 628.40ms. Allocated memory was 173.0MB in the beginning and 272.6MB in the end (delta: 99.6MB). Free memory was 108.1MB in the beginning and 220.1MB in the end (delta: -112.0MB). Peak memory consumption was 72.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 103.41ms. Allocated memory is still 272.6MB. Free memory was 220.1MB in the beginning and 206.0MB in the end (delta: 14.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 98.65ms. Allocated memory is still 272.6MB. Free memory was 206.0MB in the beginning and 188.7MB in the end (delta: 17.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * RCFGBuilder took 2067.23ms. Allocated memory was 272.6MB in the beginning and 404.8MB in the end (delta: 132.1MB). Free memory was 188.7MB in the beginning and 297.8MB in the end (delta: -109.1MB). Peak memory consumption was 140.9MB. Max. memory is 8.0GB. * TraceAbstraction took 855617.19ms. Allocated memory was 404.8MB in the beginning and 1.2GB in the end (delta: 803.2MB). Free memory was 297.2MB in the beginning and 437.4MB in the end (delta: -140.1MB). Peak memory consumption was 706.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 17 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-15-2-3-2-4-15-2-15-2-15-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 855.6s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 6 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 41.7s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 39 ConstructedInterpolants, 15 QuantifiedInterpolants, 3752 SizeOfPredicates, 115 NumberOfNonLiveVariables, 6287 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown