/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_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-examples/sorting_bubblesort_2_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 05:37:12,687 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 05:37:12,756 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 05:37:12,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 05:37:12,761 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 05:37:12,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 05:37:12,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 05:37:12,784 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 05:37:12,784 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 05:37:12,787 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 05:37:12,787 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 05:37:12,788 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 05:37:12,788 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 05:37:12,789 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 05:37:12,789 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 05:37:12,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 05:37:12,790 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 05:37:12,790 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 05:37:12,790 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 05:37:12,790 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 05:37:12,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 05:37:12,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 05:37:12,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 05:37:12,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 05:37:12,792 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 05:37:12,792 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 05:37:12,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 05:37:12,792 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 05:37:12,793 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 05:37:12,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 05:37:12,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 05:37:12,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 05:37:12,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 05:37:12,794 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 05:37:12,794 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 05:37:12,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 05:37:12,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 05:37:12,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 05:37:12,795 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 05:37:12,795 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 05:37:12,795 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 05:37:12,795 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 05:37:12,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 05:37:12,795 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 05:37:12,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 05:37:13,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 05:37:13,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 05:37:13,018 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 05:37:13,018 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 05:37:13,019 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_bubblesort_2_ground.i [2023-12-20 05:37:14,123 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 05:37:14,273 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 05:37:14,274 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_bubblesort_2_ground.i [2023-12-20 05:37:14,281 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/016cced59/313cf5ce89a34a599c6f609cb06dc549/FLAGcead3ad67 [2023-12-20 05:37:14,294 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/016cced59/313cf5ce89a34a599c6f609cb06dc549 [2023-12-20 05:37:14,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 05:37:14,297 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 05:37:14,299 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 05:37:14,299 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 05:37:14,302 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 05:37:14,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a7a0d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14, skipping insertion in model container [2023-12-20 05:37:14,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,319 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 05:37:14,431 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-examples/sorting_bubblesort_2_ground.i[820,833] [2023-12-20 05:37:14,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 05:37:14,459 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 05:37:14,469 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-examples/sorting_bubblesort_2_ground.i[820,833] [2023-12-20 05:37:14,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 05:37:14,492 INFO L206 MainTranslator]: Completed translation [2023-12-20 05:37:14,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14 WrapperNode [2023-12-20 05:37:14,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 05:37:14,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 05:37:14,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 05:37:14,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 05:37:14,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,525 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2023-12-20 05:37:14,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 05:37:14,526 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 05:37:14,526 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 05:37:14,526 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 05:37:14,534 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,537 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,551 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-12-20 05:37:14,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,562 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 05:37:14,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 05:37:14,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 05:37:14,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 05:37:14,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14" (1/1) ... [2023-12-20 05:37:14,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 05:37:14,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:37:14,594 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) [2023-12-20 05:37:14,616 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 [2023-12-20 05:37:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 05:37:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 05:37:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 05:37:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 05:37:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 05:37:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 05:37:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 05:37:14,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 05:37:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 05:37:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 05:37:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 05:37:14,689 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 05:37:14,691 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 05:37:14,816 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 05:37:14,833 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 05:37:14,833 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-20 05:37:14,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:37:14 BoogieIcfgContainer [2023-12-20 05:37:14,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 05:37:14,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 05:37:14,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 05:37:14,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 05:37:14,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:37:14" (1/3) ... [2023-12-20 05:37:14,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306da808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:37:14, skipping insertion in model container [2023-12-20 05:37:14,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:37:14" (2/3) ... [2023-12-20 05:37:14,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306da808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:37:14, skipping insertion in model container [2023-12-20 05:37:14,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:37:14" (3/3) ... [2023-12-20 05:37:14,839 INFO L112 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_2_ground.i [2023-12-20 05:37:14,851 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 05:37:14,852 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 05:37:14,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 05:37:14,885 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;@5bc55eeb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 05:37:14,885 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 05:37:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.8125) internal successors, (29), 17 states have internal predecessors, (29), 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) [2023-12-20 05:37:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-20 05:37:14,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:37:14,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:37:14,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:37:14,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:37:14,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1612111142, now seen corresponding path program 1 times [2023-12-20 05:37:14,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:37:14,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273839776] [2023-12-20 05:37:14,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:14,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:37:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 05:37:15,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:37:15,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273839776] [2023-12-20 05:37:15,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273839776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 05:37:15,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 05:37:15,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 05:37:15,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495551290] [2023-12-20 05:37:15,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 05:37:15,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 05:37:15,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:37:15,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 05:37:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 05:37:15,120 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.8125) internal successors, (29), 17 states have internal predecessors, (29), 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 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-12-20 05:37:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:37:15,158 INFO L93 Difference]: Finished difference Result 35 states and 57 transitions. [2023-12-20 05:37:15,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 05:37:15,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2023-12-20 05:37:15,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:37:15,166 INFO L225 Difference]: With dead ends: 35 [2023-12-20 05:37:15,166 INFO L226 Difference]: Without dead ends: 17 [2023-12-20 05:37:15,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 05:37:15,170 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:37:15,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:37:15,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-20 05:37:15,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-12-20 05:37:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2023-12-20 05:37:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2023-12-20 05:37:15,190 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2023-12-20 05:37:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:37:15,191 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-12-20 05:37:15,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-12-20 05:37:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2023-12-20 05:37:15,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 05:37:15,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:37:15,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:37:15,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 05:37:15,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:37:15,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:37:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1371244853, now seen corresponding path program 1 times [2023-12-20 05:37:15,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:37:15,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629616608] [2023-12-20 05:37:15,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:15,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:37:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:15,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 05:37:15,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:37:15,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629616608] [2023-12-20 05:37:15,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629616608] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:37:15,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939101880] [2023-12-20 05:37:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:15,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:15,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:37:15,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:37:15,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 05:37:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:15,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 05:37:15,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:37:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 05:37:15,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 05:37:15,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939101880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 05:37:15,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 05:37:15,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-20 05:37:15,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506267285] [2023-12-20 05:37:15,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 05:37:15,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 05:37:15,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:37:15,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 05:37:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 05:37:15,318 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-12-20 05:37:15,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:37:15,338 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2023-12-20 05:37:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 05:37:15,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 10 [2023-12-20 05:37:15,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:37:15,338 INFO L225 Difference]: With dead ends: 30 [2023-12-20 05:37:15,339 INFO L226 Difference]: Without dead ends: 22 [2023-12-20 05:37:15,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 05:37:15,340 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:37:15,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:37:15,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-20 05:37:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-20 05:37:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 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) [2023-12-20 05:37:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2023-12-20 05:37:15,343 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 10 [2023-12-20 05:37:15,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:37:15,343 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-12-20 05:37:15,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-12-20 05:37:15,344 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2023-12-20 05:37:15,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-20 05:37:15,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:37:15,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:37:15,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 05:37:15,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:15,549 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:37:15,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:37:15,549 INFO L85 PathProgramCache]: Analyzing trace with hash 810154115, now seen corresponding path program 1 times [2023-12-20 05:37:15,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:37:15,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950016039] [2023-12-20 05:37:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:15,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:37:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 05:37:15,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:37:15,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950016039] [2023-12-20 05:37:15,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950016039] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:37:15,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429450642] [2023-12-20 05:37:15,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:15,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:15,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:37:15,634 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:37:15,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 05:37:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:15,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 05:37:15,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:37:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 05:37:15,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 05:37:15,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429450642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 05:37:15,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 05:37:15,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-20 05:37:15,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756221364] [2023-12-20 05:37:15,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 05:37:15,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 05:37:15,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:37:15,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 05:37:15,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 05:37:15,686 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:37:15,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:37:15,703 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2023-12-20 05:37:15,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 05:37:15,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-20 05:37:15,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:37:15,705 INFO L225 Difference]: With dead ends: 44 [2023-12-20 05:37:15,705 INFO L226 Difference]: Without dead ends: 26 [2023-12-20 05:37:15,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 05:37:15,706 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:37:15,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:37:15,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-20 05:37:15,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-12-20 05:37:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 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) [2023-12-20 05:37:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2023-12-20 05:37:15,711 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 13 [2023-12-20 05:37:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:37:15,711 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2023-12-20 05:37:15,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 05:37:15,711 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2023-12-20 05:37:15,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-20 05:37:15,712 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:37:15,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:37:15,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 05:37:15,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-20 05:37:15,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:37:15,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:37:15,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1552667997, now seen corresponding path program 1 times [2023-12-20 05:37:15,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:37:15,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17778428] [2023-12-20 05:37:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:15,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:37:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 05:37:15,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:37:15,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17778428] [2023-12-20 05:37:15,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17778428] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:37:15,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673862481] [2023-12-20 05:37:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:15,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:15,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:37:15,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:37:15,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 05:37:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:16,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 05:37:16,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:37:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 05:37:16,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:37:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 05:37:16,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673862481] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:37:16,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:37:16,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-20 05:37:16,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029116861] [2023-12-20 05:37:16,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:37:16,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 05:37:16,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:37:16,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 05:37:16,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 05:37:16,065 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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) [2023-12-20 05:37:16,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:37:16,079 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2023-12-20 05:37:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 05:37:16,079 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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 [2023-12-20 05:37:16,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:37:16,080 INFO L225 Difference]: With dead ends: 46 [2023-12-20 05:37:16,080 INFO L226 Difference]: Without dead ends: 26 [2023-12-20 05:37:16,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 05:37:16,081 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:37:16,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:37:16,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-20 05:37:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-20 05:37:16,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 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) [2023-12-20 05:37:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2023-12-20 05:37:16,084 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 16 [2023-12-20 05:37:16,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:37:16,084 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2023-12-20 05:37:16,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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) [2023-12-20 05:37:16,084 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2023-12-20 05:37:16,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-20 05:37:16,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:37:16,085 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:37:16,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 05:37:16,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:16,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:37:16,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:37:16,291 INFO L85 PathProgramCache]: Analyzing trace with hash -190909954, now seen corresponding path program 2 times [2023-12-20 05:37:16,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:37:16,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35628364] [2023-12-20 05:37:16,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:16,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:37:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 05:37:16,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:37:16,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35628364] [2023-12-20 05:37:16,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35628364] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:37:16,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678115186] [2023-12-20 05:37:16,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 05:37:16,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:16,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:37:16,384 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:37:16,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 05:37:16,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 05:37:16,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:37:16,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 05:37:16,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:37:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 05:37:16,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:37:16,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 05:37:16,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678115186] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:37:16,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:37:16,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-12-20 05:37:16,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076355272] [2023-12-20 05:37:16,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:37:16,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 05:37:16,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:37:16,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 05:37:16,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-20 05:37:16,555 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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) [2023-12-20 05:37:16,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:37:16,598 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2023-12-20 05:37:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 05:37:16,598 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 19 [2023-12-20 05:37:16,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:37:16,599 INFO L225 Difference]: With dead ends: 61 [2023-12-20 05:37:16,599 INFO L226 Difference]: Without dead ends: 41 [2023-12-20 05:37:16,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-12-20 05:37:16,600 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:37:16,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 80 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:37:16,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-20 05:37:16,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2023-12-20 05:37:16,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 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) [2023-12-20 05:37:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-12-20 05:37:16,604 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 19 [2023-12-20 05:37:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:37:16,604 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-12-20 05:37:16,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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) [2023-12-20 05:37:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-12-20 05:37:16,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-20 05:37:16,604 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:37:16,605 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:37:16,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 05:37:16,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:16,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:37:16,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:37:16,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1522098536, now seen corresponding path program 3 times [2023-12-20 05:37:16,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:37:16,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630276447] [2023-12-20 05:37:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:16,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:37:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-20 05:37:16,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:37:16,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630276447] [2023-12-20 05:37:16,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630276447] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:37:16,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995453666] [2023-12-20 05:37:16,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 05:37:16,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:16,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:37:16,878 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:37:16,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 05:37:16,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-20 05:37:16,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:37:16,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 05:37:16,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:37:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-20 05:37:16,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:37:16,968 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-20 05:37:16,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995453666] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:37:16,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:37:16,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-12-20 05:37:16,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170569964] [2023-12-20 05:37:16,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:37:16,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 05:37:16,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:37:16,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 05:37:16,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-20 05:37:16,969 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2023-12-20 05:37:17,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:37:17,013 INFO L93 Difference]: Finished difference Result 85 states and 116 transitions. [2023-12-20 05:37:17,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 05:37:17,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 [2023-12-20 05:37:17,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:37:17,014 INFO L225 Difference]: With dead ends: 85 [2023-12-20 05:37:17,014 INFO L226 Difference]: Without dead ends: 61 [2023-12-20 05:37:17,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-12-20 05:37:17,015 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:37:17,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 42 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:37:17,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-20 05:37:17,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-12-20 05:37:17,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 states have internal predecessors, (77), 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) [2023-12-20 05:37:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2023-12-20 05:37:17,020 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 28 [2023-12-20 05:37:17,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:37:17,020 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2023-12-20 05:37:17,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2023-12-20 05:37:17,021 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2023-12-20 05:37:17,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-20 05:37:17,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:37:17,021 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:37:17,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 05:37:17,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:17,225 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:37:17,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:37:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash -302265880, now seen corresponding path program 4 times [2023-12-20 05:37:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:37:17,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305215804] [2023-12-20 05:37:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:17,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:37:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 05:37:17,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:37:17,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305215804] [2023-12-20 05:37:17,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305215804] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:37:17,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881153415] [2023-12-20 05:37:17,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 05:37:17,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:17,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:37:17,406 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:37:17,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 05:37:17,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 05:37:17,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:37:17,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-20 05:37:17,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:37:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-20 05:37:17,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:37:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-20 05:37:17,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881153415] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:37:17,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:37:17,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-20 05:37:17,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416996259] [2023-12-20 05:37:17,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:37:17,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 05:37:17,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:37:17,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 05:37:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2023-12-20 05:37:17,666 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 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) [2023-12-20 05:37:17,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:37:17,741 INFO L93 Difference]: Finished difference Result 159 states and 223 transitions. [2023-12-20 05:37:17,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-20 05:37:17,742 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 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 40 [2023-12-20 05:37:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:37:17,742 INFO L225 Difference]: With dead ends: 159 [2023-12-20 05:37:17,743 INFO L226 Difference]: Without dead ends: 110 [2023-12-20 05:37:17,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2023-12-20 05:37:17,744 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 40 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 05:37:17,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 89 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 05:37:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-20 05:37:17,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-12-20 05:37:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 109 states have internal predecessors, (142), 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) [2023-12-20 05:37:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 142 transitions. [2023-12-20 05:37:17,750 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 142 transitions. Word has length 40 [2023-12-20 05:37:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:37:17,750 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 142 transitions. [2023-12-20 05:37:17,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 27 states have internal predecessors, (69), 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) [2023-12-20 05:37:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 142 transitions. [2023-12-20 05:37:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 05:37:17,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:37:17,752 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:37:17,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 05:37:17,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:17,960 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:37:17,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:37:17,960 INFO L85 PathProgramCache]: Analyzing trace with hash 299109283, now seen corresponding path program 5 times [2023-12-20 05:37:17,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:37:17,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611153880] [2023-12-20 05:37:17,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:37:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-20 05:37:18,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:37:18,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611153880] [2023-12-20 05:37:18,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611153880] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:37:18,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327345910] [2023-12-20 05:37:18,208 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 05:37:18,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:18,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:37:18,209 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:37:18,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 05:37:18,322 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2023-12-20 05:37:18,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:37:18,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 05:37:18,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:37:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-20 05:37:18,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:37:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 1 proven. 287 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-20 05:37:18,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327345910] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:37:18,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:37:18,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 44 [2023-12-20 05:37:18,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063675123] [2023-12-20 05:37:18,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:37:18,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-20 05:37:18,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:37:18,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-20 05:37:18,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 05:37:18,901 INFO L87 Difference]: Start difference. First operand 110 states and 142 transitions. Second operand has 44 states, 44 states have (on average 2.6818181818181817) internal successors, (118), 44 states have internal predecessors, (118), 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) [2023-12-20 05:37:19,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:37:19,039 INFO L93 Difference]: Finished difference Result 304 states and 432 transitions. [2023-12-20 05:37:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-20 05:37:19,039 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.6818181818181817) internal successors, (118), 44 states have internal predecessors, (118), 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 65 [2023-12-20 05:37:19,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:37:19,040 INFO L225 Difference]: With dead ends: 304 [2023-12-20 05:37:19,040 INFO L226 Difference]: Without dead ends: 207 [2023-12-20 05:37:19,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 05:37:19,041 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 89 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 05:37:19,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 166 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 05:37:19,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-20 05:37:19,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2023-12-20 05:37:19,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3155339805825244) internal successors, (271), 206 states have internal predecessors, (271), 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) [2023-12-20 05:37:19,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 271 transitions. [2023-12-20 05:37:19,051 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 271 transitions. Word has length 65 [2023-12-20 05:37:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:37:19,051 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 271 transitions. [2023-12-20 05:37:19,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.6818181818181817) internal successors, (118), 44 states have internal predecessors, (118), 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) [2023-12-20 05:37:19,051 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 271 transitions. [2023-12-20 05:37:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-20 05:37:19,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:37:19,052 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:37:19,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 05:37:19,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:19,273 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:37:19,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:37:19,273 INFO L85 PathProgramCache]: Analyzing trace with hash -683125688, now seen corresponding path program 6 times [2023-12-20 05:37:19,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:37:19,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462751975] [2023-12-20 05:37:19,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:19,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:37:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2023-12-20 05:37:19,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:37:19,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462751975] [2023-12-20 05:37:19,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462751975] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:37:19,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500475765] [2023-12-20 05:37:19,557 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 05:37:19,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:19,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:37:19,560 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:37:19,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 05:37:19,749 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-20 05:37:19,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:37:19,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 05:37:19,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:37:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2023-12-20 05:37:19,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:37:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2023-12-20 05:37:19,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500475765] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:37:19,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:37:19,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2023-12-20 05:37:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180220318] [2023-12-20 05:37:19,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:37:19,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 05:37:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:37:19,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 05:37:19,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2023-12-20 05:37:19,978 INFO L87 Difference]: Start difference. First operand 207 states and 271 transitions. Second operand has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 28 states have internal predecessors, (43), 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) [2023-12-20 05:37:20,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:37:20,002 INFO L93 Difference]: Finished difference Result 414 states and 555 transitions. [2023-12-20 05:37:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-20 05:37:20,003 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 28 states have internal predecessors, (43), 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 114 [2023-12-20 05:37:20,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:37:20,003 INFO L225 Difference]: With dead ends: 414 [2023-12-20 05:37:20,004 INFO L226 Difference]: Without dead ends: 221 [2023-12-20 05:37:20,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2023-12-20 05:37:20,008 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:37:20,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:37:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-20 05:37:20,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2023-12-20 05:37:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.2954545454545454) internal successors, (285), 220 states have internal predecessors, (285), 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) [2023-12-20 05:37:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 285 transitions. [2023-12-20 05:37:20,035 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 285 transitions. Word has length 114 [2023-12-20 05:37:20,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:37:20,035 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 285 transitions. [2023-12-20 05:37:20,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 28 states have internal predecessors, (43), 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) [2023-12-20 05:37:20,035 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 285 transitions. [2023-12-20 05:37:20,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-20 05:37:20,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:37:20,045 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:37:20,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 05:37:20,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-20 05:37:20,252 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:37:20,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:37:20,253 INFO L85 PathProgramCache]: Analyzing trace with hash 544708584, now seen corresponding path program 7 times [2023-12-20 05:37:20,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:37:20,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661791147] [2023-12-20 05:37:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:20,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:37:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2023-12-20 05:37:20,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:37:20,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661791147] [2023-12-20 05:37:20,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661791147] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:37:20,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200083386] [2023-12-20 05:37:20,874 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 05:37:20,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:20,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:37:20,875 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:37:20,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 05:37:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:21,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 05:37:21,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:37:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2023-12-20 05:37:21,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:37:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1687 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2023-12-20 05:37:21,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200083386] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:37:21,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:37:21,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 56 [2023-12-20 05:37:21,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313697172] [2023-12-20 05:37:21,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:37:21,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-20 05:37:21,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:37:21,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-20 05:37:21,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 05:37:21,882 INFO L87 Difference]: Start difference. First operand 221 states and 285 transitions. Second operand has 57 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 56 states have internal predecessors, (71), 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) [2023-12-20 05:37:21,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:37:21,937 INFO L93 Difference]: Finished difference Result 442 states and 597 transitions. [2023-12-20 05:37:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-20 05:37:21,938 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 56 states have internal predecessors, (71), 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 128 [2023-12-20 05:37:21,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:37:21,939 INFO L225 Difference]: With dead ends: 442 [2023-12-20 05:37:21,939 INFO L226 Difference]: Without dead ends: 249 [2023-12-20 05:37:21,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 05:37:21,941 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:37:21,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:37:21,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-12-20 05:37:21,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2023-12-20 05:37:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.2620967741935485) internal successors, (313), 248 states have internal predecessors, (313), 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) [2023-12-20 05:37:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 313 transitions. [2023-12-20 05:37:21,947 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 313 transitions. Word has length 128 [2023-12-20 05:37:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:37:21,947 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 313 transitions. [2023-12-20 05:37:21,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 56 states have internal predecessors, (71), 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) [2023-12-20 05:37:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 313 transitions. [2023-12-20 05:37:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-20 05:37:21,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:37:21,949 INFO L195 NwaCegarLoop]: trace histogram [54, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:37:21,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 05:37:22,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 05:37:22,155 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:37:22,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:37:22,156 INFO L85 PathProgramCache]: Analyzing trace with hash 952342312, now seen corresponding path program 8 times [2023-12-20 05:37:22,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:37:22,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964602101] [2023-12-20 05:37:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:37:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2023-12-20 05:37:24,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:37:24,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964602101] [2023-12-20 05:37:24,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964602101] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:37:24,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868714649] [2023-12-20 05:37:24,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 05:37:24,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:24,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:37:24,341 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:37:24,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 05:37:24,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 05:37:24,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:37:24,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-20 05:37:24,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:37:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2023-12-20 05:37:24,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:37:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2821 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2023-12-20 05:37:27,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868714649] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:37:27,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:37:27,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 112 [2023-12-20 05:37:27,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391124699] [2023-12-20 05:37:27,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:37:27,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-12-20 05:37:27,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:37:27,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-12-20 05:37:27,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2023-12-20 05:37:27,480 INFO L87 Difference]: Start difference. First operand 249 states and 313 transitions. Second operand has 113 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 112 states have internal predecessors, (127), 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) [2023-12-20 05:37:27,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:37:27,618 INFO L93 Difference]: Finished difference Result 498 states and 681 transitions. [2023-12-20 05:37:27,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-12-20 05:37:27,618 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 112 states have internal predecessors, (127), 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 156 [2023-12-20 05:37:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:37:27,620 INFO L225 Difference]: With dead ends: 498 [2023-12-20 05:37:27,620 INFO L226 Difference]: Without dead ends: 305 [2023-12-20 05:37:27,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2023-12-20 05:37:27,625 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 05:37:27,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 05:37:27,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-12-20 05:37:27,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-12-20 05:37:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.2138157894736843) internal successors, (369), 304 states have internal predecessors, (369), 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) [2023-12-20 05:37:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 369 transitions. [2023-12-20 05:37:27,634 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 369 transitions. Word has length 156 [2023-12-20 05:37:27,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:37:27,634 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 369 transitions. [2023-12-20 05:37:27,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 112 states have internal predecessors, (127), 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) [2023-12-20 05:37:27,635 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 369 transitions. [2023-12-20 05:37:27,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-12-20 05:37:27,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:37:27,636 INFO L195 NwaCegarLoop]: trace histogram [110, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:37:27,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-20 05:37:27,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-20 05:37:27,843 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:37:27,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:37:27,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1066830424, now seen corresponding path program 9 times [2023-12-20 05:37:27,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:37:27,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161384847] [2023-12-20 05:37:27,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:37:27,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:37:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:37:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7441 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 1336 trivial. 0 not checked. [2023-12-20 05:37:34,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:37:34,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161384847] [2023-12-20 05:37:34,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161384847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:37:34,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021197161] [2023-12-20 05:37:34,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 05:37:34,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:37:34,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:37:34,173 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:37:34,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 05:44:54,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2023-12-20 05:44:54,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:44:54,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 05:44:54,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:44:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7441 backedges. 1 proven. 1335 refuted. 0 times theorem prover too weak. 6105 trivial. 0 not checked. [2023-12-20 05:44:55,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:44:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7441 backedges. 1 proven. 1335 refuted. 0 times theorem prover too weak. 6105 trivial. 0 not checked. [2023-12-20 05:44:57,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021197161] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:44:57,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:44:57,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 33, 33] total 175 [2023-12-20 05:44:57,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347919464] [2023-12-20 05:44:57,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:44:57,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2023-12-20 05:44:57,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:44:57,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2023-12-20 05:44:57,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8343, Invalid=22107, Unknown=0, NotChecked=0, Total=30450 [2023-12-20 05:44:57,274 INFO L87 Difference]: Start difference. First operand 305 states and 369 transitions. Second operand has 175 states, 175 states have (on average 1.7885714285714285) internal successors, (313), 175 states have internal predecessors, (313), 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) [2023-12-20 05:44:57,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:44:57,658 INFO L93 Difference]: Finished difference Result 691 states and 947 transitions. [2023-12-20 05:44:57,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2023-12-20 05:44:57,659 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 175 states have (on average 1.7885714285714285) internal successors, (313), 175 states have internal predecessors, (313), 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 212 [2023-12-20 05:44:57,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:44:57,661 INFO L225 Difference]: With dead ends: 691 [2023-12-20 05:44:57,661 INFO L226 Difference]: Without dead ends: 498 [2023-12-20 05:44:57,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6820 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=8343, Invalid=22107, Unknown=0, NotChecked=0, Total=30450 [2023-12-20 05:44:57,662 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 221 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 05:44:57,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 146 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 05:44:57,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-12-20 05:44:57,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 498. [2023-12-20 05:44:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 1.2595573440643864) internal successors, (626), 497 states have internal predecessors, (626), 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) [2023-12-20 05:44:57,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 626 transitions. [2023-12-20 05:44:57,671 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 626 transitions. Word has length 212 [2023-12-20 05:44:57,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:44:57,671 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 626 transitions. [2023-12-20 05:44:57,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 175 states have (on average 1.7885714285714285) internal successors, (313), 175 states have internal predecessors, (313), 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) [2023-12-20 05:44:57,672 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 626 transitions. [2023-12-20 05:44:57,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2023-12-20 05:44:57,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:44:57,674 INFO L195 NwaCegarLoop]: trace histogram [111, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:44:57,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 05:44:57,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-20 05:44:57,900 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:44:57,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:44:57,901 INFO L85 PathProgramCache]: Analyzing trace with hash 160697059, now seen corresponding path program 10 times [2023-12-20 05:44:57,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:44:57,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942524976] [2023-12-20 05:44:57,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:44:57,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:44:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:45:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 11952 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 5736 trivial. 0 not checked. [2023-12-20 05:45:04,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:45:04,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942524976] [2023-12-20 05:45:04,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942524976] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:45:04,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12586461] [2023-12-20 05:45:04,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 05:45:04,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:45:04,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:45:04,629 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:45:04,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 05:45:04,987 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 05:45:04,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 05:45:04,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 1555 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-20 05:45:04,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 05:45:08,167 INFO L134 CoverageAnalysis]: Checked inductivity of 11952 backedges. 1 proven. 5735 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-12-20 05:45:08,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 05:45:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 11952 backedges. 1 proven. 5735 refuted. 0 times theorem prover too weak. 6216 trivial. 0 not checked. [2023-12-20 05:45:13,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12586461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 05:45:13,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 05:45:13,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 65, 65] total 240 [2023-12-20 05:45:13,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262640746] [2023-12-20 05:45:13,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 05:45:13,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 240 states [2023-12-20 05:45:13,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:45:13,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2023-12-20 05:45:13,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14568, Invalid=42792, Unknown=0, NotChecked=0, Total=57360 [2023-12-20 05:45:13,494 INFO L87 Difference]: Start difference. First operand 498 states and 626 transitions. Second operand has 240 states, 240 states have (on average 2.1083333333333334) internal successors, (506), 240 states have internal predecessors, (506), 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) [2023-12-20 05:45:15,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 05:45:15,248 INFO L93 Difference]: Finished difference Result 1268 states and 1780 transitions. [2023-12-20 05:45:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2023-12-20 05:45:15,249 INFO L78 Accepts]: Start accepts. Automaton has has 240 states, 240 states have (on average 2.1083333333333334) internal successors, (506), 240 states have internal predecessors, (506), 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 309 [2023-12-20 05:45:15,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 05:45:15,252 INFO L225 Difference]: With dead ends: 1268 [2023-12-20 05:45:15,252 INFO L226 Difference]: Without dead ends: 883 [2023-12-20 05:45:15,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13986 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=14568, Invalid=42792, Unknown=0, NotChecked=0, Total=57360 [2023-12-20 05:45:15,254 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 517 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 05:45:15,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 247 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 05:45:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-12-20 05:45:15,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2023-12-20 05:45:15,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.2913832199546484) internal successors, (1139), 882 states have internal predecessors, (1139), 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) [2023-12-20 05:45:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1139 transitions. [2023-12-20 05:45:15,269 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1139 transitions. Word has length 309 [2023-12-20 05:45:15,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 05:45:15,269 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1139 transitions. [2023-12-20 05:45:15,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 240 states, 240 states have (on average 2.1083333333333334) internal successors, (506), 240 states have internal predecessors, (506), 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) [2023-12-20 05:45:15,269 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1139 transitions. [2023-12-20 05:45:15,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-12-20 05:45:15,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 05:45:15,274 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 112, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 05:45:15,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-20 05:45:15,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-20 05:45:15,481 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 05:45:15,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 05:45:15,482 INFO L85 PathProgramCache]: Analyzing trace with hash 380922120, now seen corresponding path program 11 times [2023-12-20 05:45:15,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 05:45:15,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388354967] [2023-12-20 05:45:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 05:45:15,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 05:45:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 05:45:22,734 INFO L134 CoverageAnalysis]: Checked inductivity of 30080 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 23752 trivial. 0 not checked. [2023-12-20 05:45:22,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 05:45:22,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388354967] [2023-12-20 05:45:22,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388354967] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 05:45:22,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208786810] [2023-12-20 05:45:22,735 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 05:45:22,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 05:45:22,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 05:45:22,736 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 05:45:22,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 05:51:51,638 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 [2023-12-20 05:51:51,673 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 05:51:52,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-20 05:51:52,874 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2023-12-20 05:51:52,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 137 [2023-12-20 05:51:52,892 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 05:51:52,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 05:51:52,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114] total 114 [2023-12-20 05:51:52,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779167242] [2023-12-20 05:51:52,892 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 05:51:52,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2023-12-20 05:51:52,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 05:51:52,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2023-12-20 05:51:52,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2023-12-20 05:51:52,895 INFO L87 Difference]: Start difference. First operand 883 states and 1139 transitions. Second operand has 115 states, 115 states have (on average 1.1043478260869566) internal successors, (127), 114 states have internal predecessors, (127), 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) [2023-12-20 05:51:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 05:51:52,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=6555, Invalid=6555, Unknown=0, NotChecked=0, Total=13110 [2023-12-20 05:51:52,897 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 05:51:52,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 05:51:52,904 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 05:51:52,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 05:51:52,906 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (883states) and FLOYD_HOARE automaton (currently 2 states, 115 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-20 05:51:52,911 INFO L445 BasicCegarLoop]: Path program histogram: [11, 1, 1, 1] [2023-12-20 05:51:52,914 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 05:51:52,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 05:51:52 BoogieIcfgContainer [2023-12-20 05:51:52,917 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 05:51:52,917 INFO L158 Benchmark]: Toolchain (without parser) took 878620.39ms. Allocated memory was 175.1MB in the beginning and 783.3MB in the end (delta: 608.2MB). Free memory was 133.2MB in the beginning and 631.0MB in the end (delta: -497.8MB). Peak memory consumption was 112.4MB. Max. memory is 8.0GB. [2023-12-20 05:51:52,917 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory is still 133.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 05:51:52,917 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.05ms. Allocated memory is still 175.1MB. Free memory was 133.2MB in the beginning and 122.1MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 05:51:52,918 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.98ms. Allocated memory is still 175.1MB. Free memory was 121.7MB in the beginning and 120.5MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 05:51:52,918 INFO L158 Benchmark]: Boogie Preprocessor took 45.77ms. Allocated memory is still 175.1MB. Free memory was 120.5MB in the beginning and 118.5MB in the end (delta: 2.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-20 05:51:52,918 INFO L158 Benchmark]: RCFGBuilder took 261.19ms. Allocated memory is still 175.1MB. Free memory was 118.4MB in the beginning and 105.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-20 05:51:52,919 INFO L158 Benchmark]: TraceAbstraction took 878081.49ms. Allocated memory was 175.1MB in the beginning and 783.3MB in the end (delta: 608.2MB). Free memory was 105.3MB in the beginning and 631.0MB in the end (delta: -525.6MB). Peak memory consumption was 84.1MB. Max. memory is 8.0GB. [2023-12-20 05:51:52,920 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory is still 133.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.05ms. Allocated memory is still 175.1MB. Free memory was 133.2MB in the beginning and 122.1MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.98ms. Allocated memory is still 175.1MB. Free memory was 121.7MB in the beginning and 120.5MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.77ms. Allocated memory is still 175.1MB. Free memory was 120.5MB in the beginning and 118.5MB in the end (delta: 2.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 261.19ms. Allocated memory is still 175.1MB. Free memory was 118.4MB in the beginning and 105.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 878081.49ms. Allocated memory was 175.1MB in the beginning and 783.3MB in the end (delta: 608.2MB). Free memory was 105.3MB in the beginning and 631.0MB in the end (delta: -525.6MB). Peak memory consumption was 84.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (883states) and FLOYD_HOARE automaton (currently 2 states, 115 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 878.0s, OverallIterations: 14, TraceHistogramMax: 126, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 900 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 900 mSDsluCounter, 1213 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 995 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1498 IncrementalHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 218 mSDtfsCounter, 1498 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2657 GetRequests, 1842 SyntacticMatches, 0 SemanticMatches, 815 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21668 ImplicationChecksByTransitivity, 27.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=883occurred in iteration=13, InterpolantAutomatonStates: 719, 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, 13 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 440.8s SatisfiabilityAnalysisTime, 40.2s InterpolantComputationTime, 2731 NumberOfCodeBlocks, 2613 NumberOfCodeBlocksAsserted, 90 NumberOfCheckSat, 3782 ConstructedInterpolants, 0 QuantifiedInterpolants, 6526 SizeOfPredicates, 0 NumberOfNonLiveVariables, 4849 ConjunctsInSsa, 235 ConjunctsInUnsatCore, 36 InterpolantComputations, 3 PerfectInterpolantSequences, 68273/107642 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