/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-industry-pattern/array_assert_loop_dep.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 16:54:11,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 16:54:11,552 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 16:54:11,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 16:54:11,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 16:54:11,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 16:54:11,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 16:54:11,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 16:54:11,585 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 16:54:11,587 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 16:54:11,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 16:54:11,589 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 16:54:11,589 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 16:54:11,591 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 16:54:11,591 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 16:54:11,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 16:54:11,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 16:54:11,592 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 16:54:11,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 16:54:11,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 16:54:11,592 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 16:54:11,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 16:54:11,593 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 16:54:11,593 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 16:54:11,593 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 16:54:11,594 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 16:54:11,594 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 16:54:11,594 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 16:54:11,594 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 16:54:11,594 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 16:54:11,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 16:54:11,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 16:54:11,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 16:54:11,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 16:54:11,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:54:11,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 16:54:11,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 16:54:11,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 16:54:11,596 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 16:54:11,597 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 16:54:11,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 16:54:11,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 16:54:11,597 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 16:54:11,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 16:54:11,598 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 16:54:11,598 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 16:54:11,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 16:54:11,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 16:54:11,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 16:54:11,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 16:54:11,867 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 16:54:11,868 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 16:54:11,870 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_assert_loop_dep.i [2023-12-21 16:54:13,070 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 16:54:13,278 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 16:54:13,278 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_assert_loop_dep.i [2023-12-21 16:54:13,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41655f353/3ae3465c3b04490ab5f3c0fa7bfc90a9/FLAG88401131b [2023-12-21 16:54:13,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41655f353/3ae3465c3b04490ab5f3c0fa7bfc90a9 [2023-12-21 16:54:13,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 16:54:13,307 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 16:54:13,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 16:54:13,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 16:54:13,314 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 16:54:13,315 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,316 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6325ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13, skipping insertion in model container [2023-12-21 16:54:13,316 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,335 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 16:54:13,476 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_assert_loop_dep.i[814,827] [2023-12-21 16:54:13,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:54:13,497 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 16:54:13,509 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_assert_loop_dep.i[814,827] [2023-12-21 16:54:13,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 16:54:13,534 INFO L206 MainTranslator]: Completed translation [2023-12-21 16:54:13,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13 WrapperNode [2023-12-21 16:54:13,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 16:54:13,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 16:54:13,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 16:54:13,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 16:54:13,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,547 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,562 INFO L138 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2023-12-21 16:54:13,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 16:54:13,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 16:54:13,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 16:54:13,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 16:54:13,572 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,574 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,587 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-21 16:54:13,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,596 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 16:54:13,599 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 16:54:13,599 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 16:54:13,599 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 16:54:13,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13" (1/1) ... [2023-12-21 16:54:13,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 16:54:13,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 16:54:13,633 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) [2023-12-21 16:54:13,648 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 [2023-12-21 16:54:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 16:54:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 16:54:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 16:54:13,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 16:54:13,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 16:54:13,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 16:54:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 16:54:13,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 16:54:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 16:54:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 16:54:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 16:54:13,759 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 16:54:13,763 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 16:54:13,891 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 16:54:13,921 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 16:54:13,921 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 16:54:13,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:54:13 BoogieIcfgContainer [2023-12-21 16:54:13,922 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 16:54:13,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 16:54:13,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 16:54:13,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 16:54:13,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:54:13" (1/3) ... [2023-12-21 16:54:13,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f798163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:54:13, skipping insertion in model container [2023-12-21 16:54:13,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:54:13" (2/3) ... [2023-12-21 16:54:13,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f798163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:54:13, skipping insertion in model container [2023-12-21 16:54:13,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:54:13" (3/3) ... [2023-12-21 16:54:13,935 INFO L112 eAbstractionObserver]: Analyzing ICFG array_assert_loop_dep.i [2023-12-21 16:54:13,948 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 16:54:13,949 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 16:54:13,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 16:54:13,989 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;@1beaf922, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 16:54:13,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 16:54:13,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:54:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-21 16:54:13,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:54:13,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-21 16:54:14,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:54:14,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:54:14,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1968117311, now seen corresponding path program 1 times [2023-12-21 16:54:14,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:54:14,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936138595] [2023-12-21 16:54:14,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:54:14,021 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 [2023-12-21 16:54:14,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:54:14,024 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) [2023-12-21 16:54:14,031 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 [2023-12-21 16:54:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:54:14,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 16:54:14,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:54:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:54:14,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 16:54:14,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:54:14,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936138595] [2023-12-21 16:54:14,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936138595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 16:54:14,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 16:54:14,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 16:54:14,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932021434] [2023-12-21 16:54:14,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 16:54:14,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 16:54:14,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:54:14,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 16:54:14,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 16:54:14,154 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:54:14,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:54:14,229 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2023-12-21 16:54:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 16:54:14,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-21 16:54:14,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:54:14,238 INFO L225 Difference]: With dead ends: 30 [2023-12-21 16:54:14,238 INFO L226 Difference]: Without dead ends: 18 [2023-12-21 16:54:14,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 16:54:14,245 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:54:14,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 12 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 16:54:14,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-21 16:54:14,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2023-12-21 16:54:14,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2023-12-21 16:54:14,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2023-12-21 16:54:14,272 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2023-12-21 16:54:14,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:54:14,272 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2023-12-21 16:54:14,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 16:54:14,273 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2023-12-21 16:54:14,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-21 16:54:14,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:54:14,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-21 16:54:14,276 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 [2023-12-21 16:54:14,476 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 [2023-12-21 16:54:14,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:54:14,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:54:14,477 INFO L85 PathProgramCache]: Analyzing trace with hash 369958735, now seen corresponding path program 1 times [2023-12-21 16:54:14,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:54:14,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689697511] [2023-12-21 16:54:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 16:54:14,478 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 [2023-12-21 16:54:14,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:54:14,479 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) [2023-12-21 16:54:14,491 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 [2023-12-21 16:54:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 16:54:14,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 16:54:14,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:54:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:54:14,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:54:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:54:14,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:54:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689697511] [2023-12-21 16:54:14,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689697511] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:54:14,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:54:14,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 16:54:14,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213222896] [2023-12-21 16:54:14,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:54:14,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 16:54:14,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:54:14,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 16:54:14,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 16:54:14,597 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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) [2023-12-21 16:54:14,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:54:14,709 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2023-12-21 16:54:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 16:54:14,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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) Word has length 7 [2023-12-21 16:54:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:54:14,710 INFO L225 Difference]: With dead ends: 48 [2023-12-21 16:54:14,710 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 16:54:14,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 16:54:14,712 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 51 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:54:14,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 22 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 16:54:14,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 16:54:14,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2023-12-21 16:54:14,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2023-12-21 16:54:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-12-21 16:54:14,718 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 7 [2023-12-21 16:54:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:54:14,719 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-12-21 16:54:14,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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) [2023-12-21 16:54:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-12-21 16:54:14,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-21 16:54:14,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:54:14,720 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-12-21 16:54:14,727 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 [2023-12-21 16:54:14,922 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 [2023-12-21 16:54:14,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:54:14,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:54:14,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1697063615, now seen corresponding path program 2 times [2023-12-21 16:54:14,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:54:14,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403488387] [2023-12-21 16:54:14,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 16:54:14,924 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 [2023-12-21 16:54:14,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:54:14,926 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) [2023-12-21 16:54:14,939 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 [2023-12-21 16:54:14,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 16:54:14,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:54:14,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 16:54:14,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:54:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:54:15,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:54:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:54:15,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:54:15,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403488387] [2023-12-21 16:54:15,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403488387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:54:15,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:54:15,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 16:54:15,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116786654] [2023-12-21 16:54:15,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:54:15,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 16:54:15,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:54:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 16:54:15,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 16:54:15,107 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 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) [2023-12-21 16:54:15,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:54:15,428 INFO L93 Difference]: Finished difference Result 101 states and 119 transitions. [2023-12-21 16:54:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 16:54:15,429 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 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 10 [2023-12-21 16:54:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:54:15,430 INFO L225 Difference]: With dead ends: 101 [2023-12-21 16:54:15,431 INFO L226 Difference]: Without dead ends: 84 [2023-12-21 16:54:15,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 16:54:15,432 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 177 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 16:54:15,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 118 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 16:54:15,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-21 16:54:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 44. [2023-12-21 16:54:15,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 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) [2023-12-21 16:54:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2023-12-21 16:54:15,444 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 10 [2023-12-21 16:54:15,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:54:15,444 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2023-12-21 16:54:15,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 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) [2023-12-21 16:54:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2023-12-21 16:54:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-21 16:54:15,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:54:15,445 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-12-21 16:54:15,452 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 [2023-12-21 16:54:15,645 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 [2023-12-21 16:54:15,646 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:54:15,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:54:15,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1334574463, now seen corresponding path program 3 times [2023-12-21 16:54:15,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:54:15,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394549095] [2023-12-21 16:54:15,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 16:54:15,647 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 [2023-12-21 16:54:15,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:54:15,648 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) [2023-12-21 16:54:15,652 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 [2023-12-21 16:54:15,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-21 16:54:15,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:54:15,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 16:54:15,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:54:15,830 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:54:15,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:54:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:54:16,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:54:16,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394549095] [2023-12-21 16:54:16,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394549095] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:54:16,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:54:16,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 16:54:16,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696940926] [2023-12-21 16:54:16,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:54:16,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 16:54:16,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:54:16,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 16:54:16,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 16:54:16,216 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 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) [2023-12-21 16:54:17,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:54:17,741 INFO L93 Difference]: Finished difference Result 212 states and 248 transitions. [2023-12-21 16:54:17,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 16:54:17,741 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 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 16 [2023-12-21 16:54:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:54:17,744 INFO L225 Difference]: With dead ends: 212 [2023-12-21 16:54:17,744 INFO L226 Difference]: Without dead ends: 180 [2023-12-21 16:54:17,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 16:54:17,746 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 966 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 16:54:17,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 526 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 16:54:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-21 16:54:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 86. [2023-12-21 16:54:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 85 states have internal predecessors, (99), 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) [2023-12-21 16:54:17,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2023-12-21 16:54:17,759 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 16 [2023-12-21 16:54:17,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:54:17,759 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2023-12-21 16:54:17,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 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) [2023-12-21 16:54:17,760 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2023-12-21 16:54:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-21 16:54:17,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:54:17,760 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2023-12-21 16:54:17,763 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 [2023-12-21 16:54:17,963 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 [2023-12-21 16:54:17,964 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:54:17,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:54:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2075884801, now seen corresponding path program 4 times [2023-12-21 16:54:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:54:17,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523329086] [2023-12-21 16:54:17,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 16:54:17,965 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 [2023-12-21 16:54:17,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:54:17,966 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) [2023-12-21 16:54:17,967 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 [2023-12-21 16:54:18,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 16:54:18,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:54:18,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 16:54:18,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:54:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:54:18,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:54:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:54:19,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:54:19,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523329086] [2023-12-21 16:54:19,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523329086] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:54:19,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:54:19,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 16:54:19,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189700066] [2023-12-21 16:54:19,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:54:19,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 16:54:19,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:54:19,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 16:54:19,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 16:54:19,834 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 48 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 47 states have internal predecessors, (52), 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) [2023-12-21 16:54:27,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:54:27,226 INFO L93 Difference]: Finished difference Result 434 states and 506 transitions. [2023-12-21 16:54:27,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 16:54:27,227 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 47 states have internal predecessors, (52), 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 28 [2023-12-21 16:54:27,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:54:27,228 INFO L225 Difference]: With dead ends: 434 [2023-12-21 16:54:27,228 INFO L226 Difference]: Without dead ends: 372 [2023-12-21 16:54:27,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 16:54:27,232 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 4056 mSDsluCounter, 2112 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 897 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 897 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 16:54:27,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4056 Valid, 2206 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [897 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 16:54:27,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-12-21 16:54:27,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 170. [2023-12-21 16:54:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.1538461538461537) internal successors, (195), 169 states have internal predecessors, (195), 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) [2023-12-21 16:54:27,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 195 transitions. [2023-12-21 16:54:27,249 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 195 transitions. Word has length 28 [2023-12-21 16:54:27,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:54:27,249 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 195 transitions. [2023-12-21 16:54:27,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 47 states have internal predecessors, (52), 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) [2023-12-21 16:54:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 195 transitions. [2023-12-21 16:54:27,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 16:54:27,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:54:27,250 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1] [2023-12-21 16:54:27,256 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 [2023-12-21 16:54:27,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:54:27,453 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:54:27,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:54:27,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1975569919, now seen corresponding path program 5 times [2023-12-21 16:54:27,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:54:27,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680227231] [2023-12-21 16:54:27,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 16:54:27,455 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 [2023-12-21 16:54:27,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:54:27,455 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:54:27,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-21 16:54:27,717 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-12-21 16:54:27,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:54:27,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 16:54:27,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:54:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:54:28,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:54:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:54:34,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:54:34,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680227231] [2023-12-21 16:54:34,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680227231] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:54:34,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:54:34,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 16:54:34,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823872773] [2023-12-21 16:54:34,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:54:34,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 16:54:34,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:54:34,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 16:54:34,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 16:54:34,374 INFO L87 Difference]: Start difference. First operand 170 states and 195 transitions. Second operand has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 95 states have internal predecessors, (100), 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) [2023-12-21 16:55:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 16:55:23,524 INFO L93 Difference]: Finished difference Result 878 states and 1022 transitions. [2023-12-21 16:55:23,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-21 16:55:23,524 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 95 states have internal predecessors, (100), 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 52 [2023-12-21 16:55:23,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 16:55:23,528 INFO L225 Difference]: With dead ends: 878 [2023-12-21 16:55:23,528 INFO L226 Difference]: Without dead ends: 756 [2023-12-21 16:55:23,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 48.8s TimeCoverageRelationStatistics Valid=6909, Invalid=13397, Unknown=0, NotChecked=0, Total=20306 [2023-12-21 16:55:23,532 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 14142 mSDsluCounter, 8832 mSDsCounter, 0 mSdLazyCounter, 9173 mSolverCounterSat, 3321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14142 SdHoareTripleChecker+Valid, 9022 SdHoareTripleChecker+Invalid, 12494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3321 IncrementalHoareTripleChecker+Valid, 9173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-21 16:55:23,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14142 Valid, 9022 Invalid, 12494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3321 Valid, 9173 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-21 16:55:23,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-12-21 16:55:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 338. [2023-12-21 16:55:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.1483679525222552) internal successors, (387), 337 states have internal predecessors, (387), 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) [2023-12-21 16:55:23,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 387 transitions. [2023-12-21 16:55:23,558 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 387 transitions. Word has length 52 [2023-12-21 16:55:23,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 16:55:23,559 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 387 transitions. [2023-12-21 16:55:23,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 95 states have internal predecessors, (100), 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) [2023-12-21 16:55:23,559 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 387 transitions. [2023-12-21 16:55:23,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 16:55:23,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 16:55:23,561 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1] [2023-12-21 16:55:23,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 16:55:23,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 16:55:23,768 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 16:55:23,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 16:55:23,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1285135361, now seen corresponding path program 6 times [2023-12-21 16:55:23,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 16:55:23,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872300786] [2023-12-21 16:55:23,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 16:55:23,770 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 [2023-12-21 16:55:23,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 16:55:23,771 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 16:55:23,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-21 16:55:25,274 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2023-12-21 16:55:25,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 16:55:25,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 97 conjunts are in the unsatisfiable core [2023-12-21 16:55:25,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 16:55:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:55:28,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 16:55:49,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 16:55:49,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 16:55:49,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872300786] [2023-12-21 16:55:49,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872300786] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 16:55:49,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 16:55:49,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 16:55:49,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105877081] [2023-12-21 16:55:49,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 16:55:49,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 16:55:49,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 16:55:49,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 16:55:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 16:55:49,709 INFO L87 Difference]: Start difference. First operand 338 states and 387 transitions. Second operand has 192 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 191 states have internal predecessors, (196), 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) [2023-12-21 17:03:02,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 17:03:02,587 INFO L93 Difference]: Finished difference Result 1766 states and 2054 transitions. [2023-12-21 17:03:02,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-21 17:03:02,588 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 191 states have internal predecessors, (196), 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 100 [2023-12-21 17:03:02,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 17:03:02,593 INFO L225 Difference]: With dead ends: 1766 [2023-12-21 17:03:02,593 INFO L226 Difference]: Without dead ends: 1524 [2023-12-21 17:03:02,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 427.5s TimeCoverageRelationStatistics Valid=27627, Invalid=54455, Unknown=0, NotChecked=0, Total=82082 [2023-12-21 17:03:02,601 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 55998 mSDsluCounter, 36096 mSDsCounter, 0 mSdLazyCounter, 36795 mSolverCounterSat, 13163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55998 SdHoareTripleChecker+Valid, 36478 SdHoareTripleChecker+Invalid, 49958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13163 IncrementalHoareTripleChecker+Valid, 36795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2023-12-21 17:03:02,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55998 Valid, 36478 Invalid, 49958 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13163 Valid, 36795 Invalid, 0 Unknown, 0 Unchecked, 25.4s Time] [2023-12-21 17:03:02,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2023-12-21 17:03:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 674. [2023-12-21 17:03:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 1.1456166419019316) internal successors, (771), 673 states have internal predecessors, (771), 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) [2023-12-21 17:03:02,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 771 transitions. [2023-12-21 17:03:02,635 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 771 transitions. Word has length 100 [2023-12-21 17:03:02,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 17:03:02,636 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 771 transitions. [2023-12-21 17:03:02,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 191 states have internal predecessors, (196), 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) [2023-12-21 17:03:02,636 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 771 transitions. [2023-12-21 17:03:02,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-21 17:03:02,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 17:03:02,638 INFO L195 NwaCegarLoop]: trace histogram [190, 1, 1, 1, 1, 1, 1] [2023-12-21 17:03:02,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-21 17:03:02,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:03:02,847 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 17:03:02,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 17:03:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash 312111105, now seen corresponding path program 7 times [2023-12-21 17:03:02,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 17:03:02,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329430810] [2023-12-21 17:03:02,851 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 17:03:02,852 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 [2023-12-21 17:03:02,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 17:03:02,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-21 17:03:02,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-21 17:03:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 17:03:03,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 17:03:03,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 17:03:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:03:17,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 17:04:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18145 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 17:04:36,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 17:04:36,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329430810] [2023-12-21 17:04:36,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329430810] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 17:04:36,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 17:04:36,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-21 17:04:36,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528873985] [2023-12-21 17:04:36,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 17:04:36,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 17:04:36,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 17:04:36,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 17:04:36,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 17:04:36,638 INFO L87 Difference]: Start difference. First operand 674 states and 771 transitions. Second operand has 384 states, 384 states have (on average 1.0104166666666667) internal successors, (388), 383 states have internal predecessors, (388), 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) [2023-12-21 17:05:20,800 WARN L293 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 574 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:05:44,441 WARN L293 SmtUtils]: Spent 7.57s on a formula simplification. DAG size of input: 571 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:06:11,062 WARN L293 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 568 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:06:37,882 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 565 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:07:06,496 WARN L293 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 562 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:07:34,560 WARN L293 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 559 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:08:02,002 WARN L293 SmtUtils]: Spent 7.20s on a formula simplification. DAG size of input: 556 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 17:08:29,783 WARN L293 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 553 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 17:08:31,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2023-12-21 17:08:31,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 306.1s TimeCoverageRelationStatistics Valid=40318, Invalid=112954, Unknown=0, NotChecked=0, Total=153272 [2023-12-21 17:08:31,277 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36681 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2023-12-21 17:08:31,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36682 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36681 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2023-12-21 17:08:31,279 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 17:08:31,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-21 17:08:31,305 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 [2023-12-21 17:08:31,305 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 17:08:31,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-21 17:08:31,481 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (674states) and FLOYD_HOARE automaton (currently 201 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 392 known predicates. [2023-12-21 17:08:31,485 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1] [2023-12-21 17:08:31,487 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 17:08:31,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:08:31 BoogieIcfgContainer [2023-12-21 17:08:31,488 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 17:08:31,489 INFO L158 Benchmark]: Toolchain (without parser) took 858181.48ms. Allocated memory is still 325.1MB. Free memory was 271.8MB in the beginning and 175.3MB in the end (delta: 96.5MB). Peak memory consumption was 97.6MB. Max. memory is 8.0GB. [2023-12-21 17:08:31,489 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 205.5MB. Free memory is still 155.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 17:08:31,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.67ms. Allocated memory is still 325.1MB. Free memory was 271.8MB in the beginning and 260.5MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 17:08:31,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.07ms. Allocated memory is still 325.1MB. Free memory was 260.5MB in the beginning and 258.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 17:08:31,490 INFO L158 Benchmark]: Boogie Preprocessor took 35.07ms. Allocated memory is still 325.1MB. Free memory was 258.8MB in the beginning and 257.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 17:08:31,490 INFO L158 Benchmark]: RCFGBuilder took 323.36ms. Allocated memory is still 325.1MB. Free memory was 257.1MB in the beginning and 244.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-21 17:08:31,490 INFO L158 Benchmark]: TraceAbstraction took 857564.51ms. Allocated memory is still 325.1MB. Free memory was 244.1MB in the beginning and 175.3MB in the end (delta: 68.9MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. [2023-12-21 17:08:31,491 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 205.5MB. Free memory is still 155.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 224.67ms. Allocated memory is still 325.1MB. Free memory was 271.8MB in the beginning and 260.5MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.07ms. Allocated memory is still 325.1MB. Free memory was 260.5MB in the beginning and 258.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.07ms. Allocated memory is still 325.1MB. Free memory was 258.8MB in the beginning and 257.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 323.36ms. Allocated memory is still 325.1MB. Free memory was 257.1MB in the beginning and 244.8MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 857564.51ms. Allocated memory is still 325.1MB. Free memory was 244.1MB in the beginning and 175.3MB in the end (delta: 68.9MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (674states) and FLOYD_HOARE automaton (currently 201 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 392 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 857.5s, OverallIterations: 8, TraceHistogramMax: 190, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 726.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75396 SdHoareTripleChecker+Valid, 51.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75396 mSDsluCounter, 48384 SdHoareTripleChecker+Invalid, 44.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47632 mSDsCounter, 17652 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85707 IncrementalHoareTripleChecker+Invalid, 103359 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17652 mSolverCounterUnsat, 752 mSDtfsCounter, 85707 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 997 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 936 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5856 ImplicationChecksByTransitivity, 790.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=674occurred in iteration=7, InterpolantAutomatonStates: 383, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 1620 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 127.0s InterpolantComputationTime, 415 NumberOfCodeBlocks, 415 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 809 ConstructedInterpolants, 0 QuantifiedInterpolants, 3877 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2051 ConjunctsInSsa, 385 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 0/48020 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