/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.arbitrated_top_n3_w32_d16_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 21:02:46,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 21:02:46,280 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-12-16 21:02:46,285 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 21:02:46,286 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 21:02:46,319 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 21:02:46,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 21:02:46,320 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 21:02:46,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 21:02:46,324 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 21:02:46,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 21:02:46,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 21:02:46,326 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 21:02:46,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 21:02:46,327 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 21:02:46,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 21:02:46,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 21:02:46,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 21:02:46,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 21:02:46,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 21:02:46,329 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 21:02:46,329 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 21:02:46,329 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 21:02:46,329 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 21:02:46,330 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 21:02:46,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 21:02:46,330 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 21:02:46,331 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 21:02:46,331 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 21:02:46,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 21:02:46,332 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 21:02:46,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 21:02:46,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 21:02:46,333 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 21:02:46,333 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 21:02:46,333 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 21:02:46,333 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 21:02:46,333 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 21:02:46,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 21:02:46,334 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 21:02:46,334 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 21:02:46,334 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 21:02:46,334 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 21:02:46,334 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 21:02:46,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 21:02:46,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 21:02:46,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 21:02:46,596 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 21:02:46,597 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 21:02:46,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n3_w32_d16_e0.c [2023-12-16 21:02:47,777 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 21:02:48,124 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 21:02:48,124 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n3_w32_d16_e0.c [2023-12-16 21:02:48,150 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b98965592/8a30570d6fed4eaf929d38b0053d5bb9/FLAGdc12e731f [2023-12-16 21:02:48,162 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b98965592/8a30570d6fed4eaf929d38b0053d5bb9 [2023-12-16 21:02:48,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 21:02:48,166 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 21:02:48,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 21:02:48,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 21:02:48,173 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 21:02:48,173 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:02:48" (1/1) ... [2023-12-16 21:02:48,174 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe7643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:48, skipping insertion in model container [2023-12-16 21:02:48,174 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:02:48" (1/1) ... [2023-12-16 21:02:48,254 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 21:02:48,437 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.arbitrated_top_n3_w32_d16_e0.c[1325,1338] [2023-12-16 21:02:48,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 21:02:48,873 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 21:02:48,884 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.arbitrated_top_n3_w32_d16_e0.c[1325,1338] [2023-12-16 21:02:49,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 21:02:49,058 INFO L206 MainTranslator]: Completed translation [2023-12-16 21:02:49,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49 WrapperNode [2023-12-16 21:02:49,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 21:02:49,062 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 21:02:49,062 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 21:02:49,062 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 21:02:49,068 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49" (1/1) ... [2023-12-16 21:02:49,116 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49" (1/1) ... [2023-12-16 21:02:49,207 INFO L138 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2644 [2023-12-16 21:02:49,208 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 21:02:49,208 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 21:02:49,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 21:02:49,209 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 21:02:49,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49" (1/1) ... [2023-12-16 21:02:49,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49" (1/1) ... [2023-12-16 21:02:49,236 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49" (1/1) ... [2023-12-16 21:02:49,289 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]. [2023-12-16 21:02:49,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49" (1/1) ... [2023-12-16 21:02:49,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49" (1/1) ... [2023-12-16 21:02:49,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49" (1/1) ... [2023-12-16 21:02:49,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49" (1/1) ... [2023-12-16 21:02:49,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49" (1/1) ... [2023-12-16 21:02:49,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49" (1/1) ... [2023-12-16 21:02:49,381 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 21:02:49,382 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 21:02:49,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 21:02:49,383 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 21:02:49,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49" (1/1) ... [2023-12-16 21:02:49,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 21:02:49,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 21:02:49,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 21:02:49,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 21:02:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 21:02:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 21:02:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 21:02:49,460 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 21:02:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 21:02:49,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 21:02:49,890 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 21:02:49,892 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 21:02:52,336 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 21:02:52,473 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 21:02:52,473 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 21:02:52,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:02:52 BoogieIcfgContainer [2023-12-16 21:02:52,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 21:02:52,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 21:02:52,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 21:02:52,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 21:02:52,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:02:48" (1/3) ... [2023-12-16 21:02:52,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef54425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:02:52, skipping insertion in model container [2023-12-16 21:02:52,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:02:49" (2/3) ... [2023-12-16 21:02:52,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef54425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:02:52, skipping insertion in model container [2023-12-16 21:02:52,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:02:52" (3/3) ... [2023-12-16 21:02:52,482 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n3_w32_d16_e0.c [2023-12-16 21:02:52,499 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 21:02:52,499 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 21:02:52,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 21:02:52,550 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;@227b471f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 21:02:52,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 21:02:52,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 21:02:52,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 21:02:52,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:02:52,563 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-12-16 21:02:52,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:02:52,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:02:52,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1229239407, now seen corresponding path program 1 times [2023-12-16 21:02:52,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:02:52,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940748416] [2023-12-16 21:02:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:02:52,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:02:52,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:02:52,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 21:02:52,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 21:02:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:02:53,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 21:02:53,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:02:53,512 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-16 21:02:53,512 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 21:02:53,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:02:53,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940748416] [2023-12-16 21:02:53,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940748416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 21:02:53,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 21:02:53,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 21:02:53,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047216833] [2023-12-16 21:02:53,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 21:02:53,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 21:02:53,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:02:53,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 21:02:53,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 21:02:53,544 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-16 21:02:53,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:02:53,590 INFO L93 Difference]: Finished difference Result 61 states and 96 transitions. [2023-12-16 21:02:53,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 21:02:53,597 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 64 [2023-12-16 21:02:53,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:02:53,603 INFO L225 Difference]: With dead ends: 61 [2023-12-16 21:02:53,603 INFO L226 Difference]: Without dead ends: 30 [2023-12-16 21:02:53,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 21:02:53,609 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 21:02:53,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 21:02:53,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-16 21:02:53,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-16 21:02:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 21:02:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2023-12-16 21:02:53,639 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 64 [2023-12-16 21:02:53,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:02:53,640 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2023-12-16 21:02:53,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-16 21:02:53,640 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2023-12-16 21:02:53,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-16 21:02:53,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:02:53,642 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-12-16 21:02:53,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 21:02:53,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:02:53,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:02:53,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:02:53,849 INFO L85 PathProgramCache]: Analyzing trace with hash -148556931, now seen corresponding path program 1 times [2023-12-16 21:02:53,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:02:53,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6376284] [2023-12-16 21:02:53,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:02:53,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:02:53,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:02:53,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 21:02:53,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 21:02:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:02:55,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 1159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 21:02:55,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:02:56,085 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-16 21:02:56,085 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 21:02:56,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:02:56,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6376284] [2023-12-16 21:02:56,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6376284] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 21:02:56,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 21:02:56,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 21:02:56,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668299904] [2023-12-16 21:02:56,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 21:02:56,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 21:02:56,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:02:56,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 21:02:56,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 21:02:56,094 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 21:02:56,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:02:56,641 INFO L93 Difference]: Finished difference Result 55 states and 74 transitions. [2023-12-16 21:02:56,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 21:02:56,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 64 [2023-12-16 21:02:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:02:56,643 INFO L225 Difference]: With dead ends: 55 [2023-12-16 21:02:56,643 INFO L226 Difference]: Without dead ends: 53 [2023-12-16 21:02:56,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 21:02:56,644 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 3 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 21:02:56,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 75 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 21:02:56,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-16 21:02:56,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2023-12-16 21:02:56,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 21:02:56,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2023-12-16 21:02:56,659 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 64 [2023-12-16 21:02:56,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:02:56,660 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2023-12-16 21:02:56,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-12-16 21:02:56,661 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2023-12-16 21:02:56,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-12-16 21:02:56,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:02:56,664 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-16 21:02:56,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 21:02:56,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:02:56,876 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:02:56,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:02:56,877 INFO L85 PathProgramCache]: Analyzing trace with hash -438810163, now seen corresponding path program 1 times [2023-12-16 21:02:56,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:02:56,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794130571] [2023-12-16 21:02:56,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:02:56,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:02:56,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:02:56,881 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 21:02:56,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 21:03:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:03:09,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 3262 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-16 21:03:09,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:03:10,410 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 18 proven. 61 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-16 21:03:10,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:03:10,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 21:03:10,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794130571] [2023-12-16 21:03:10,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794130571] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:03:10,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [366198847] [2023-12-16 21:03:10,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 21:03:10,614 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 21:03:10,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 21:03:10,654 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 21:03:10,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-16 21:03:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 21:03:13,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 3262 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-16 21:03:13,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 21:03:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 18 proven. 61 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-16 21:03:13,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 21:03:13,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [366198847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 21:03:13,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 21:03:13,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2023-12-16 21:03:13,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150915793] [2023-12-16 21:03:13,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 21:03:13,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 21:03:13,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 21:03:13,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 21:03:13,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-16 21:03:13,988 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-16 21:03:15,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 21:03:15,447 INFO L93 Difference]: Finished difference Result 78 states and 107 transitions. [2023-12-16 21:03:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 21:03:15,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 127 [2023-12-16 21:03:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 21:03:15,449 INFO L225 Difference]: With dead ends: 78 [2023-12-16 21:03:15,450 INFO L226 Difference]: Without dead ends: 76 [2023-12-16 21:03:15,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-12-16 21:03:15,451 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-16 21:03:15,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 147 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-16 21:03:15,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-16 21:03:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2023-12-16 21:03:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-12-16 21:03:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 104 transitions. [2023-12-16 21:03:15,465 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 104 transitions. Word has length 127 [2023-12-16 21:03:15,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 21:03:15,466 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 104 transitions. [2023-12-16 21:03:15,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 9 states have internal predecessors, (33), 4 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-16 21:03:15,466 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 104 transitions. [2023-12-16 21:03:15,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-16 21:03:15,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 21:03:15,469 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2023-12-16 21:03:15,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-16 21:03:15,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-16 21:03:15,880 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 21:03:15,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 21:03:15,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 21:03:15,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1049908867, now seen corresponding path program 2 times [2023-12-16 21:03:15,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 21:03:15,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749361964] [2023-12-16 21:03:15,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 21:03:15,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 21:03:15,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 21:03:15,886 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 21:03:15,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 21:03:47,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 21:03:47,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 21:03:47,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 5365 conjuncts, 215 conjunts are in the unsatisfiable core [2023-12-16 21:03:47,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 21:03:54,795 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 (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 21:03:54,795 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 21:03:55,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 21:03:55,996 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 21:03:56,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-16 21:03:56,005 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 21:03:56,005 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 191 with TraceHistMax 30,while TraceCheckSpWp was constructing forward predicates,while executing Executor. [2023-12-16 21:03:56,008 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-12-16 21:03:56,010 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 21:03:56,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 09:03:56 BoogieIcfgContainer [2023-12-16 21:03:56,012 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 21:03:56,012 INFO L158 Benchmark]: Toolchain (without parser) took 67846.52ms. Allocated memory was 206.6MB in the beginning and 483.4MB in the end (delta: 276.8MB). Free memory was 142.8MB in the beginning and 146.2MB in the end (delta: -3.4MB). Peak memory consumption was 273.7MB. Max. memory is 8.0GB. [2023-12-16 21:03:56,013 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 206.6MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 21:03:56,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 891.77ms. Allocated memory was 206.6MB in the beginning and 332.4MB in the end (delta: 125.8MB). Free memory was 142.5MB in the beginning and 237.8MB in the end (delta: -95.3MB). Peak memory consumption was 32.7MB. Max. memory is 8.0GB. [2023-12-16 21:03:56,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 146.27ms. Allocated memory is still 332.4MB. Free memory was 237.8MB in the beginning and 218.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-16 21:03:56,013 INFO L158 Benchmark]: Boogie Preprocessor took 173.39ms. Allocated memory is still 332.4MB. Free memory was 218.9MB in the beginning and 197.4MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-16 21:03:56,014 INFO L158 Benchmark]: RCFGBuilder took 3091.20ms. Allocated memory is still 332.4MB. Free memory was 197.4MB in the beginning and 195.3MB in the end (delta: 2.1MB). Peak memory consumption was 136.3MB. Max. memory is 8.0GB. [2023-12-16 21:03:56,014 INFO L158 Benchmark]: TraceAbstraction took 63536.60ms. Allocated memory was 332.4MB in the beginning and 483.4MB in the end (delta: 151.0MB). Free memory was 194.8MB in the beginning and 146.2MB in the end (delta: 48.6MB). Peak memory consumption was 199.1MB. Max. memory is 8.0GB. [2023-12-16 21:03:56,016 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 206.6MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 891.77ms. Allocated memory was 206.6MB in the beginning and 332.4MB in the end (delta: 125.8MB). Free memory was 142.5MB in the beginning and 237.8MB in the end (delta: -95.3MB). Peak memory consumption was 32.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 146.27ms. Allocated memory is still 332.4MB. Free memory was 237.8MB in the beginning and 218.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 173.39ms. Allocated memory is still 332.4MB. Free memory was 218.9MB in the beginning and 197.4MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * RCFGBuilder took 3091.20ms. Allocated memory is still 332.4MB. Free memory was 197.4MB in the beginning and 195.3MB in the end (delta: 2.1MB). Peak memory consumption was 136.3MB. Max. memory is 8.0GB. * TraceAbstraction took 63536.60ms. Allocated memory was 332.4MB in the beginning and 483.4MB in the end (delta: 151.0MB). Free memory was 194.8MB in the beginning and 146.2MB in the end (delta: 48.6MB). Peak memory consumption was 199.1MB. 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: 22]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 22). Cancelled while NwaCegarLoop was analyzing trace of length 191 with TraceHistMax 30,while TraceCheckSpWp was constructing forward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 63.5s, OverallIterations: 4, TraceHistogramMax: 30, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 260 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 173 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 397 IncrementalHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 87 mSDtfsCounter, 397 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 393 GetRequests, 374 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=3, InterpolantAutomatonStates: 17, 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.3s SsaConstructionTime, 15.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 382 NumberOfCodeBlocks, 382 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 378 ConstructedInterpolants, 0 QuantifiedInterpolants, 1507 SizeOfPredicates, 103 NumberOfNonLiveVariables, 8842 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1802/1924 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