/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:29:20,033 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:29:20,101 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:29:20,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:29:20,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:29:20,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:29:20,129 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:29:20,129 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:29:20,130 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:29:20,133 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:29:20,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:29:20,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:29:20,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:29:20,135 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:29:20,135 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:29:20,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:29:20,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:29:20,135 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:29:20,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:29:20,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:29:20,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:29:20,137 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:29:20,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:29:20,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:29:20,137 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:29:20,137 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:29:20,137 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:29:20,138 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:29:20,138 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:29:20,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:29:20,139 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:29:20,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:29:20,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:29:20,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:29:20,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:29:20,140 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:29:20,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:29:20,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:29:20,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:29:20,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:29:20,140 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:29:20,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:29:20,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:29:20,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:29:20,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:29:20,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:29:20,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:29:20,376 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:29:20,378 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:29:20,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-15 23:29:21,538 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:29:21,757 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:29:21,758 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-15 23:29:21,772 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/924290099/08075fc82f7c47d2b92829e1ea253910/FLAGd4e78cdf2 [2023-12-15 23:29:21,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/924290099/08075fc82f7c47d2b92829e1ea253910 [2023-12-15 23:29:21,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:29:21,787 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:29:21,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:29:21,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:29:21,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:29:21,792 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:29:21" (1/1) ... [2023-12-15 23:29:21,793 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784ce485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:21, skipping insertion in model container [2023-12-15 23:29:21,793 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:29:21" (1/1) ... [2023-12-15 23:29:21,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:29:21,952 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2023-12-15 23:29:21,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:29:21,977 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:29:22,004 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[4373,4386] [2023-12-15 23:29:22,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:29:22,036 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:29:22,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22 WrapperNode [2023-12-15 23:29:22,037 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:29:22,038 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:29:22,038 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:29:22,038 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:29:22,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22" (1/1) ... [2023-12-15 23:29:22,056 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22" (1/1) ... [2023-12-15 23:29:22,093 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 347 [2023-12-15 23:29:22,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:29:22,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:29:22,094 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:29:22,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:29:22,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22" (1/1) ... [2023-12-15 23:29:22,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22" (1/1) ... [2023-12-15 23:29:22,109 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22" (1/1) ... [2023-12-15 23:29:22,120 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 23:29:22,120 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22" (1/1) ... [2023-12-15 23:29:22,120 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22" (1/1) ... [2023-12-15 23:29:22,124 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22" (1/1) ... [2023-12-15 23:29:22,126 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22" (1/1) ... [2023-12-15 23:29:22,127 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22" (1/1) ... [2023-12-15 23:29:22,128 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22" (1/1) ... [2023-12-15 23:29:22,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:29:22,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:29:22,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:29:22,131 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:29:22,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22" (1/1) ... [2023-12-15 23:29:22,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:29:22,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:29:22,190 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) [2023-12-15 23:29:22,204 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 [2023-12-15 23:29:22,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:29:22,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:29:22,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:29:22,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:29:22,292 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:29:22,294 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:29:22,540 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:29:22,579 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:29:22,579 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-15 23:29:22,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:29:22 BoogieIcfgContainer [2023-12-15 23:29:22,580 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:29:22,581 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:29:22,581 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:29:22,584 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:29:22,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:29:21" (1/3) ... [2023-12-15 23:29:22,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce3293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:29:22, skipping insertion in model container [2023-12-15 23:29:22,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:29:22" (2/3) ... [2023-12-15 23:29:22,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce3293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:29:22, skipping insertion in model container [2023-12-15 23:29:22,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:29:22" (3/3) ... [2023-12-15 23:29:22,585 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2023-12-15 23:29:22,601 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:29:22,602 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:29:22,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:29:22,645 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;@537f1f26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:29:22,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:29:22,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 76 states have (on average 1.7105263157894737) internal successors, (130), 77 states have internal predecessors, (130), 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) [2023-12-15 23:29:22,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-15 23:29:22,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:22,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:22,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:22,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:22,658 INFO L85 PathProgramCache]: Analyzing trace with hash 2064705082, now seen corresponding path program 1 times [2023-12-15 23:29:22,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:22,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777833968] [2023-12-15 23:29:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:22,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:22,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:22,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777833968] [2023-12-15 23:29:22,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777833968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:22,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:22,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:29:22,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973137282] [2023-12-15 23:29:22,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:22,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:29:22,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:22,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:29:22,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:22,971 INFO L87 Difference]: Start difference. First operand has 78 states, 76 states have (on average 1.7105263157894737) internal successors, (130), 77 states have internal predecessors, (130), 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 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2023-12-15 23:29:23,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:23,008 INFO L93 Difference]: Finished difference Result 180 states and 290 transitions. [2023-12-15 23:29:23,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:29:23,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2023-12-15 23:29:23,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:23,017 INFO L225 Difference]: With dead ends: 180 [2023-12-15 23:29:23,017 INFO L226 Difference]: Without dead ends: 117 [2023-12-15 23:29:23,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:23,021 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 84 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:23,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 255 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:23,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-15 23:29:23,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2023-12-15 23:29:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.5) internal successors, (171), 114 states have internal predecessors, (171), 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) [2023-12-15 23:29:23,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 171 transitions. [2023-12-15 23:29:23,051 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 171 transitions. Word has length 36 [2023-12-15 23:29:23,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:23,051 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 171 transitions. [2023-12-15 23:29:23,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2023-12-15 23:29:23,051 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 171 transitions. [2023-12-15 23:29:23,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-15 23:29:23,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:23,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:23,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:29:23,053 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:23,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:23,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2100240699, now seen corresponding path program 1 times [2023-12-15 23:29:23,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:23,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480471821] [2023-12-15 23:29:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:23,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:23,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:23,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480471821] [2023-12-15 23:29:23,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480471821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:23,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:23,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:29:23,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79863088] [2023-12-15 23:29:23,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:23,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:29:23,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:23,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:29:23,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:23,153 INFO L87 Difference]: Start difference. First operand 115 states and 171 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-12-15 23:29:23,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:23,170 INFO L93 Difference]: Finished difference Result 275 states and 423 transitions. [2023-12-15 23:29:23,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:29:23,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2023-12-15 23:29:23,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:23,172 INFO L225 Difference]: With dead ends: 275 [2023-12-15 23:29:23,172 INFO L226 Difference]: Without dead ends: 179 [2023-12-15 23:29:23,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:23,174 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 69 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:23,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 211 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:23,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-15 23:29:23,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 177. [2023-12-15 23:29:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.5227272727272727) internal successors, (268), 176 states have internal predecessors, (268), 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) [2023-12-15 23:29:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 268 transitions. [2023-12-15 23:29:23,185 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 268 transitions. Word has length 37 [2023-12-15 23:29:23,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:23,185 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 268 transitions. [2023-12-15 23:29:23,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-12-15 23:29:23,186 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 268 transitions. [2023-12-15 23:29:23,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 23:29:23,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:23,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:23,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:29:23,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:23,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:23,187 INFO L85 PathProgramCache]: Analyzing trace with hash -923316447, now seen corresponding path program 1 times [2023-12-15 23:29:23,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:23,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43547443] [2023-12-15 23:29:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:23,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:23,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:23,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43547443] [2023-12-15 23:29:23,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43547443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:23,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:23,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:29:23,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551675757] [2023-12-15 23:29:23,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:23,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:29:23,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:23,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:29:23,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:29:23,284 INFO L87 Difference]: Start difference. First operand 177 states and 268 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2023-12-15 23:29:23,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:23,353 INFO L93 Difference]: Finished difference Result 809 states and 1264 transitions. [2023-12-15 23:29:23,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:29:23,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2023-12-15 23:29:23,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:23,357 INFO L225 Difference]: With dead ends: 809 [2023-12-15 23:29:23,357 INFO L226 Difference]: Without dead ends: 651 [2023-12-15 23:29:23,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:29:23,358 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 447 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:23,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 618 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:23,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-12-15 23:29:23,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 333. [2023-12-15 23:29:23,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.5301204819277108) internal successors, (508), 332 states have internal predecessors, (508), 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) [2023-12-15 23:29:23,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 508 transitions. [2023-12-15 23:29:23,375 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 508 transitions. Word has length 38 [2023-12-15 23:29:23,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:23,376 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 508 transitions. [2023-12-15 23:29:23,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2023-12-15 23:29:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 508 transitions. [2023-12-15 23:29:23,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 23:29:23,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:23,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:23,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:29:23,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:23,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:23,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1422504898, now seen corresponding path program 1 times [2023-12-15 23:29:23,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:23,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248959961] [2023-12-15 23:29:23,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:23,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:23,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:23,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248959961] [2023-12-15 23:29:23,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248959961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:23,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:23,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:29:23,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491927417] [2023-12-15 23:29:23,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:23,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:29:23,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:23,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:29:23,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:29:23,481 INFO L87 Difference]: Start difference. First operand 333 states and 508 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2023-12-15 23:29:23,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:23,531 INFO L93 Difference]: Finished difference Result 1163 states and 1791 transitions. [2023-12-15 23:29:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:29:23,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2023-12-15 23:29:23,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:23,534 INFO L225 Difference]: With dead ends: 1163 [2023-12-15 23:29:23,534 INFO L226 Difference]: Without dead ends: 849 [2023-12-15 23:29:23,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:29:23,546 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 198 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:23,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 397 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:23,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2023-12-15 23:29:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 845. [2023-12-15 23:29:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 1.5308056872037914) internal successors, (1292), 844 states have internal predecessors, (1292), 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) [2023-12-15 23:29:23,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1292 transitions. [2023-12-15 23:29:23,590 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1292 transitions. Word has length 39 [2023-12-15 23:29:23,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:23,592 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1292 transitions. [2023-12-15 23:29:23,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2023-12-15 23:29:23,593 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1292 transitions. [2023-12-15 23:29:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-15 23:29:23,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:23,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:23,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:29:23,599 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:23,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:23,599 INFO L85 PathProgramCache]: Analyzing trace with hash -998517633, now seen corresponding path program 1 times [2023-12-15 23:29:23,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:23,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350142771] [2023-12-15 23:29:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:23,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:23,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:23,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350142771] [2023-12-15 23:29:23,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350142771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:23,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:23,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:29:23,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461825249] [2023-12-15 23:29:23,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:23,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:29:23,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:23,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:29:23,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:23,666 INFO L87 Difference]: Start difference. First operand 845 states and 1292 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-12-15 23:29:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:23,683 INFO L93 Difference]: Finished difference Result 2233 states and 3406 transitions. [2023-12-15 23:29:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:29:23,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2023-12-15 23:29:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:23,689 INFO L225 Difference]: With dead ends: 2233 [2023-12-15 23:29:23,689 INFO L226 Difference]: Without dead ends: 1407 [2023-12-15 23:29:23,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:23,693 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 78 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:23,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 259 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:23,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2023-12-15 23:29:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1405. [2023-12-15 23:29:23,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 1.5014245014245013) internal successors, (2108), 1404 states have internal predecessors, (2108), 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) [2023-12-15 23:29:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 2108 transitions. [2023-12-15 23:29:23,712 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 2108 transitions. Word has length 39 [2023-12-15 23:29:23,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:23,713 INFO L495 AbstractCegarLoop]: Abstraction has 1405 states and 2108 transitions. [2023-12-15 23:29:23,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-12-15 23:29:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 2108 transitions. [2023-12-15 23:29:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-15 23:29:23,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:23,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:23,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:29:23,716 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:23,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:23,717 INFO L85 PathProgramCache]: Analyzing trace with hash -367530919, now seen corresponding path program 1 times [2023-12-15 23:29:23,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:23,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785269222] [2023-12-15 23:29:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:23,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:23,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:23,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785269222] [2023-12-15 23:29:23,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785269222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:23,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:23,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:29:23,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96189460] [2023-12-15 23:29:23,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:23,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:29:23,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:23,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:29:23,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:29:23,819 INFO L87 Difference]: Start difference. First operand 1405 states and 2108 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-15 23:29:23,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:23,928 INFO L93 Difference]: Finished difference Result 4177 states and 6286 transitions. [2023-12-15 23:29:23,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:29:23,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2023-12-15 23:29:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:23,936 INFO L225 Difference]: With dead ends: 4177 [2023-12-15 23:29:23,937 INFO L226 Difference]: Without dead ends: 2791 [2023-12-15 23:29:23,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:29:23,939 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 457 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:23,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 129 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:29:23,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2023-12-15 23:29:23,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2789. [2023-12-15 23:29:23,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2788 states have (on average 1.4935437589670015) internal successors, (4164), 2788 states have internal predecessors, (4164), 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) [2023-12-15 23:29:24,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 4164 transitions. [2023-12-15 23:29:24,005 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 4164 transitions. Word has length 41 [2023-12-15 23:29:24,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:24,006 INFO L495 AbstractCegarLoop]: Abstraction has 2789 states and 4164 transitions. [2023-12-15 23:29:24,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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) [2023-12-15 23:29:24,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 4164 transitions. [2023-12-15 23:29:24,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-15 23:29:24,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:24,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:24,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:29:24,007 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:24,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:24,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1258633748, now seen corresponding path program 1 times [2023-12-15 23:29:24,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:24,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160732575] [2023-12-15 23:29:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:24,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:24,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:24,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160732575] [2023-12-15 23:29:24,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160732575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:24,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:24,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:29:24,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884781002] [2023-12-15 23:29:24,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:24,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:29:24,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:24,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:29:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:29:24,160 INFO L87 Difference]: Start difference. First operand 2789 states and 4164 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2023-12-15 23:29:24,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:24,205 INFO L93 Difference]: Finished difference Result 5751 states and 8501 transitions. [2023-12-15 23:29:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:29:24,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2023-12-15 23:29:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:24,220 INFO L225 Difference]: With dead ends: 5751 [2023-12-15 23:29:24,220 INFO L226 Difference]: Without dead ends: 5749 [2023-12-15 23:29:24,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-15 23:29:24,224 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 168 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:24,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 518 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:24,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5749 states. [2023-12-15 23:29:24,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5749 to 2981. [2023-12-15 23:29:24,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2980 states have (on average 1.461744966442953) internal successors, (4356), 2980 states have internal predecessors, (4356), 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) [2023-12-15 23:29:24,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 4356 transitions. [2023-12-15 23:29:24,282 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 4356 transitions. Word has length 41 [2023-12-15 23:29:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:24,282 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 4356 transitions. [2023-12-15 23:29:24,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2023-12-15 23:29:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 4356 transitions. [2023-12-15 23:29:24,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-15 23:29:24,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:24,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:24,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:29:24,283 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:24,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:24,284 INFO L85 PathProgramCache]: Analyzing trace with hash 373513535, now seen corresponding path program 1 times [2023-12-15 23:29:24,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:24,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189486453] [2023-12-15 23:29:24,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:24,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:24,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:24,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189486453] [2023-12-15 23:29:24,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189486453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:24,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:24,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:29:24,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246769368] [2023-12-15 23:29:24,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:24,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:29:24,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:29:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:24,346 INFO L87 Difference]: Start difference. First operand 2981 states and 4356 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-12-15 23:29:24,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:24,371 INFO L93 Difference]: Finished difference Result 7123 states and 10402 transitions. [2023-12-15 23:29:24,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:29:24,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2023-12-15 23:29:24,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:24,382 INFO L225 Difference]: With dead ends: 7123 [2023-12-15 23:29:24,382 INFO L226 Difference]: Without dead ends: 4161 [2023-12-15 23:29:24,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:24,386 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 59 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:24,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 195 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:24,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4161 states. [2023-12-15 23:29:24,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4161 to 4159. [2023-12-15 23:29:24,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4159 states, 4158 states have (on average 1.4487734487734487) internal successors, (6024), 4158 states have internal predecessors, (6024), 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) [2023-12-15 23:29:24,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4159 states to 4159 states and 6024 transitions. [2023-12-15 23:29:24,459 INFO L78 Accepts]: Start accepts. Automaton has 4159 states and 6024 transitions. Word has length 42 [2023-12-15 23:29:24,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:24,459 INFO L495 AbstractCegarLoop]: Abstraction has 4159 states and 6024 transitions. [2023-12-15 23:29:24,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2023-12-15 23:29:24,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4159 states and 6024 transitions. [2023-12-15 23:29:24,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 23:29:24,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:24,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:24,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:29:24,461 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:24,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:24,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1493660826, now seen corresponding path program 1 times [2023-12-15 23:29:24,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:24,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300862263] [2023-12-15 23:29:24,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:24,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:29:24,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:24,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300862263] [2023-12-15 23:29:24,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300862263] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:29:24,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229212491] [2023-12-15 23:29:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:24,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:29:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:29:24,638 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) [2023-12-15 23:29:24,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 23:29:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:24,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 23:29:24,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:29:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:29:24,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:29:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:29:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229212491] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:29:25,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:29:25,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-12-15 23:29:25,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428278449] [2023-12-15 23:29:25,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:29:25,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 23:29:25,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:25,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 23:29:25,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:29:25,162 INFO L87 Difference]: Start difference. First operand 4159 states and 6024 transitions. Second operand has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 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) [2023-12-15 23:29:25,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:25,216 INFO L93 Difference]: Finished difference Result 12994 states and 18965 transitions. [2023-12-15 23:29:25,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:29:25,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 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 59 [2023-12-15 23:29:25,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:25,248 INFO L225 Difference]: With dead ends: 12994 [2023-12-15 23:29:25,248 INFO L226 Difference]: Without dead ends: 10032 [2023-12-15 23:29:25,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-15 23:29:25,253 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 565 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:25,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 888 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:25,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10032 states. [2023-12-15 23:29:25,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10032 to 9567. [2023-12-15 23:29:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9567 states, 9566 states have (on average 1.4392640602132554) internal successors, (13768), 9566 states have internal predecessors, (13768), 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) [2023-12-15 23:29:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9567 states to 9567 states and 13768 transitions. [2023-12-15 23:29:25,379 INFO L78 Accepts]: Start accepts. Automaton has 9567 states and 13768 transitions. Word has length 59 [2023-12-15 23:29:25,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:25,379 INFO L495 AbstractCegarLoop]: Abstraction has 9567 states and 13768 transitions. [2023-12-15 23:29:25,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.22222222222222) internal successors, (164), 9 states have internal predecessors, (164), 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) [2023-12-15 23:29:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 9567 states and 13768 transitions. [2023-12-15 23:29:25,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 23:29:25,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:25,381 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:25,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 23:29:25,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:29:25,587 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:25,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:25,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1133015571, now seen corresponding path program 1 times [2023-12-15 23:29:25,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:25,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817740268] [2023-12-15 23:29:25,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:25,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 23:29:25,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:25,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817740268] [2023-12-15 23:29:25,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817740268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:25,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:25,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:29:25,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215211296] [2023-12-15 23:29:25,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:25,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:29:25,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:25,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:29:25,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:29:25,658 INFO L87 Difference]: Start difference. First operand 9567 states and 13768 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2023-12-15 23:29:25,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:25,768 INFO L93 Difference]: Finished difference Result 17579 states and 25410 transitions. [2023-12-15 23:29:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:29:25,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 60 [2023-12-15 23:29:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:25,791 INFO L225 Difference]: With dead ends: 17579 [2023-12-15 23:29:25,791 INFO L226 Difference]: Without dead ends: 14121 [2023-12-15 23:29:25,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:29:25,795 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 310 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:25,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 513 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14121 states. [2023-12-15 23:29:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14121 to 12595. [2023-12-15 23:29:25,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12595 states, 12594 states have (on average 1.4336985866285532) internal successors, (18056), 12594 states have internal predecessors, (18056), 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) [2023-12-15 23:29:25,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12595 states to 12595 states and 18056 transitions. [2023-12-15 23:29:25,934 INFO L78 Accepts]: Start accepts. Automaton has 12595 states and 18056 transitions. Word has length 60 [2023-12-15 23:29:25,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:25,934 INFO L495 AbstractCegarLoop]: Abstraction has 12595 states and 18056 transitions. [2023-12-15 23:29:25,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2023-12-15 23:29:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 12595 states and 18056 transitions. [2023-12-15 23:29:25,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 23:29:25,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:25,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:25,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:29:25,936 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:25,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:25,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1285268948, now seen corresponding path program 1 times [2023-12-15 23:29:25,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:25,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86848702] [2023-12-15 23:29:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:25,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:25,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:25,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86848702] [2023-12-15 23:29:25,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86848702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:25,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:25,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:29:25,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632309361] [2023-12-15 23:29:25,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:25,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:29:25,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:25,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:29:25,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:25,967 INFO L87 Difference]: Start difference. First operand 12595 states and 18056 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-12-15 23:29:26,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:26,008 INFO L93 Difference]: Finished difference Result 20240 states and 28875 transitions. [2023-12-15 23:29:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:29:26,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2023-12-15 23:29:26,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:26,026 INFO L225 Difference]: With dead ends: 20240 [2023-12-15 23:29:26,026 INFO L226 Difference]: Without dead ends: 13033 [2023-12-15 23:29:26,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:26,035 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 59 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:26,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 232 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13033 states. [2023-12-15 23:29:26,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13033 to 12674. [2023-12-15 23:29:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12674 states, 12673 states have (on average 1.4025092716799494) internal successors, (17774), 12673 states have internal predecessors, (17774), 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) [2023-12-15 23:29:26,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12674 states to 12674 states and 17774 transitions. [2023-12-15 23:29:26,254 INFO L78 Accepts]: Start accepts. Automaton has 12674 states and 17774 transitions. Word has length 60 [2023-12-15 23:29:26,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:26,254 INFO L495 AbstractCegarLoop]: Abstraction has 12674 states and 17774 transitions. [2023-12-15 23:29:26,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-12-15 23:29:26,254 INFO L276 IsEmpty]: Start isEmpty. Operand 12674 states and 17774 transitions. [2023-12-15 23:29:26,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 23:29:26,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:26,256 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:26,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:29:26,256 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:26,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:26,256 INFO L85 PathProgramCache]: Analyzing trace with hash -210579987, now seen corresponding path program 1 times [2023-12-15 23:29:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:26,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281545075] [2023-12-15 23:29:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:26,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:26,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:26,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281545075] [2023-12-15 23:29:26,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281545075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:26,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:26,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:29:26,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078167014] [2023-12-15 23:29:26,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:26,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:29:26,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:29:26,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:26,370 INFO L87 Difference]: Start difference. First operand 12674 states and 17774 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-12-15 23:29:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:26,429 INFO L93 Difference]: Finished difference Result 31012 states and 43308 transitions. [2023-12-15 23:29:26,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:29:26,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2023-12-15 23:29:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:26,460 INFO L225 Difference]: With dead ends: 31012 [2023-12-15 23:29:26,460 INFO L226 Difference]: Without dead ends: 21245 [2023-12-15 23:29:26,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:26,474 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 56 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:26,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 212 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:26,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21245 states. [2023-12-15 23:29:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21245 to 21194. [2023-12-15 23:29:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21194 states, 21193 states have (on average 1.3782852828764214) internal successors, (29210), 21193 states have internal predecessors, (29210), 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) [2023-12-15 23:29:26,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21194 states to 21194 states and 29210 transitions. [2023-12-15 23:29:26,790 INFO L78 Accepts]: Start accepts. Automaton has 21194 states and 29210 transitions. Word has length 60 [2023-12-15 23:29:26,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:26,790 INFO L495 AbstractCegarLoop]: Abstraction has 21194 states and 29210 transitions. [2023-12-15 23:29:26,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-12-15 23:29:26,790 INFO L276 IsEmpty]: Start isEmpty. Operand 21194 states and 29210 transitions. [2023-12-15 23:29:26,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 23:29:26,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:26,792 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:26,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:29:26,793 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:26,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:26,793 INFO L85 PathProgramCache]: Analyzing trace with hash -257963811, now seen corresponding path program 1 times [2023-12-15 23:29:26,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:26,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302270635] [2023-12-15 23:29:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:26,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 23:29:26,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:26,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302270635] [2023-12-15 23:29:26,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302270635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:26,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:26,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:29:26,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815040366] [2023-12-15 23:29:26,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:26,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:29:26,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:26,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:29:26,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:29:26,871 INFO L87 Difference]: Start difference. First operand 21194 states and 29210 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2023-12-15 23:29:26,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:26,971 INFO L93 Difference]: Finished difference Result 30653 states and 42661 transitions. [2023-12-15 23:29:26,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:29:26,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 60 [2023-12-15 23:29:26,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:27,100 INFO L225 Difference]: With dead ends: 30653 [2023-12-15 23:29:27,101 INFO L226 Difference]: Without dead ends: 27203 [2023-12-15 23:29:27,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:29:27,114 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 317 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:27,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 496 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:27,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27203 states. [2023-12-15 23:29:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27203 to 24482. [2023-12-15 23:29:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24482 states, 24481 states have (on average 1.3794371144969568) internal successors, (33770), 24481 states have internal predecessors, (33770), 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) [2023-12-15 23:29:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24482 states to 24482 states and 33770 transitions. [2023-12-15 23:29:27,424 INFO L78 Accepts]: Start accepts. Automaton has 24482 states and 33770 transitions. Word has length 60 [2023-12-15 23:29:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:27,424 INFO L495 AbstractCegarLoop]: Abstraction has 24482 states and 33770 transitions. [2023-12-15 23:29:27,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2023-12-15 23:29:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 24482 states and 33770 transitions. [2023-12-15 23:29:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 23:29:27,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:27,426 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:27,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:29:27,427 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:27,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:27,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1939950564, now seen corresponding path program 1 times [2023-12-15 23:29:27,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:27,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632120585] [2023-12-15 23:29:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:27,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:29:27,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:27,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632120585] [2023-12-15 23:29:27,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632120585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:27,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:27,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:29:27,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176982655] [2023-12-15 23:29:27,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:27,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:29:27,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:27,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:29:27,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:29:27,493 INFO L87 Difference]: Start difference. First operand 24482 states and 33770 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-12-15 23:29:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:27,598 INFO L93 Difference]: Finished difference Result 38061 states and 52931 transitions. [2023-12-15 23:29:27,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:29:27,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 61 [2023-12-15 23:29:27,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:27,651 INFO L225 Difference]: With dead ends: 38061 [2023-12-15 23:29:27,652 INFO L226 Difference]: Without dead ends: 32050 [2023-12-15 23:29:27,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:29:27,666 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 307 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:27,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 534 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:27,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32050 states. [2023-12-15 23:29:28,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32050 to 29314. [2023-12-15 23:29:28,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29314 states, 29313 states have (on average 1.3746801760311125) internal successors, (40296), 29313 states have internal predecessors, (40296), 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) [2023-12-15 23:29:28,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29314 states to 29314 states and 40296 transitions. [2023-12-15 23:29:28,164 INFO L78 Accepts]: Start accepts. Automaton has 29314 states and 40296 transitions. Word has length 61 [2023-12-15 23:29:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:28,164 INFO L495 AbstractCegarLoop]: Abstraction has 29314 states and 40296 transitions. [2023-12-15 23:29:28,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2023-12-15 23:29:28,164 INFO L276 IsEmpty]: Start isEmpty. Operand 29314 states and 40296 transitions. [2023-12-15 23:29:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 23:29:28,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:28,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:28,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:29:28,168 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:28,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:28,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2020570427, now seen corresponding path program 1 times [2023-12-15 23:29:28,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:28,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52770672] [2023-12-15 23:29:28,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:28,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:28,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:28,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52770672] [2023-12-15 23:29:28,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52770672] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:28,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:28,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:29:28,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570191262] [2023-12-15 23:29:28,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:28,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:29:28,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:28,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:29:28,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:28,299 INFO L87 Difference]: Start difference. First operand 29314 states and 40296 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2023-12-15 23:29:28,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:28,411 INFO L93 Difference]: Finished difference Result 57371 states and 78486 transitions. [2023-12-15 23:29:28,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:29:28,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2023-12-15 23:29:28,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:28,449 INFO L225 Difference]: With dead ends: 57371 [2023-12-15 23:29:28,449 INFO L226 Difference]: Without dead ends: 30132 [2023-12-15 23:29:28,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:28,481 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 56 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:28,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 248 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:28,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30132 states. [2023-12-15 23:29:28,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30132 to 28785. [2023-12-15 23:29:28,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28785 states, 28784 states have (on average 1.3459560867148417) internal successors, (38742), 28784 states have internal predecessors, (38742), 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) [2023-12-15 23:29:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28785 states to 28785 states and 38742 transitions. [2023-12-15 23:29:28,898 INFO L78 Accepts]: Start accepts. Automaton has 28785 states and 38742 transitions. Word has length 63 [2023-12-15 23:29:28,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:28,898 INFO L495 AbstractCegarLoop]: Abstraction has 28785 states and 38742 transitions. [2023-12-15 23:29:28,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2023-12-15 23:29:28,898 INFO L276 IsEmpty]: Start isEmpty. Operand 28785 states and 38742 transitions. [2023-12-15 23:29:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 23:29:28,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:28,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:28,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:29:28,902 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:28,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:28,902 INFO L85 PathProgramCache]: Analyzing trace with hash -594363625, now seen corresponding path program 1 times [2023-12-15 23:29:28,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:28,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497787840] [2023-12-15 23:29:28,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:28,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:28,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 23:29:28,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:28,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497787840] [2023-12-15 23:29:28,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497787840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:28,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:28,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:29:28,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368124858] [2023-12-15 23:29:28,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:28,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:29:28,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:28,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:29:28,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:29:28,962 INFO L87 Difference]: Start difference. First operand 28785 states and 38742 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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) [2023-12-15 23:29:29,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:29,142 INFO L93 Difference]: Finished difference Result 65901 states and 88550 transitions. [2023-12-15 23:29:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:29:29,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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 [2023-12-15 23:29:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:29,182 INFO L225 Difference]: With dead ends: 65901 [2023-12-15 23:29:29,182 INFO L226 Difference]: Without dead ends: 37175 [2023-12-15 23:29:29,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:29:29,373 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 413 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:29,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 133 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:29:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37175 states. [2023-12-15 23:29:29,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37175 to 36847. [2023-12-15 23:29:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36847 states, 36846 states have (on average 1.329099495196222) internal successors, (48972), 36846 states have internal predecessors, (48972), 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) [2023-12-15 23:29:29,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36847 states to 36847 states and 48972 transitions. [2023-12-15 23:29:29,786 INFO L78 Accepts]: Start accepts. Automaton has 36847 states and 48972 transitions. Word has length 65 [2023-12-15 23:29:29,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:29,786 INFO L495 AbstractCegarLoop]: Abstraction has 36847 states and 48972 transitions. [2023-12-15 23:29:29,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 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) [2023-12-15 23:29:29,786 INFO L276 IsEmpty]: Start isEmpty. Operand 36847 states and 48972 transitions. [2023-12-15 23:29:29,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-15 23:29:29,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:29,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:29,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:29:29,790 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:29,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:29,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1255750332, now seen corresponding path program 1 times [2023-12-15 23:29:29,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:29,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770442742] [2023-12-15 23:29:29,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:29,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:29,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:29,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770442742] [2023-12-15 23:29:29,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770442742] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:29:29,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143282366] [2023-12-15 23:29:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:29,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:29:29,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:29:29,926 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) [2023-12-15 23:29:29,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 23:29:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:30,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 23:29:30,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:29:30,263 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:30,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:29:30,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:30,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143282366] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:29:30,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:29:30,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-15 23:29:30,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605494412] [2023-12-15 23:29:30,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:29:30,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 23:29:30,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:30,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 23:29:30,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:29:30,323 INFO L87 Difference]: Start difference. First operand 36847 states and 48972 transitions. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 10 states have internal predecessors, (110), 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) [2023-12-15 23:29:30,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:30,673 INFO L93 Difference]: Finished difference Result 88713 states and 117862 transitions. [2023-12-15 23:29:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 23:29:30,674 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 10 states have internal predecessors, (110), 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 [2023-12-15 23:29:30,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:30,870 INFO L225 Difference]: With dead ends: 88713 [2023-12-15 23:29:30,870 INFO L226 Difference]: Without dead ends: 61986 [2023-12-15 23:29:30,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-15 23:29:30,898 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 1759 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:30,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 403 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:29:30,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61986 states. [2023-12-15 23:29:31,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61986 to 37411. [2023-12-15 23:29:31,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37411 states, 37410 states have (on average 1.3362737236033146) internal successors, (49990), 37410 states have internal predecessors, (49990), 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) [2023-12-15 23:29:31,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37411 states to 37411 states and 49990 transitions. [2023-12-15 23:29:31,501 INFO L78 Accepts]: Start accepts. Automaton has 37411 states and 49990 transitions. Word has length 65 [2023-12-15 23:29:31,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:31,501 INFO L495 AbstractCegarLoop]: Abstraction has 37411 states and 49990 transitions. [2023-12-15 23:29:31,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.0) internal successors, (110), 10 states have internal predecessors, (110), 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) [2023-12-15 23:29:31,501 INFO L276 IsEmpty]: Start isEmpty. Operand 37411 states and 49990 transitions. [2023-12-15 23:29:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 23:29:31,520 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:31,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:31,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 23:29:31,734 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,SelfDestructingSolverStorable16 [2023-12-15 23:29:31,735 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:31,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:31,735 INFO L85 PathProgramCache]: Analyzing trace with hash -603329014, now seen corresponding path program 1 times [2023-12-15 23:29:31,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:31,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534750413] [2023-12-15 23:29:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:31,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:31,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:31,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534750413] [2023-12-15 23:29:31,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534750413] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:29:31,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595337750] [2023-12-15 23:29:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:31,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:29:31,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:29:31,990 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) [2023-12-15 23:29:32,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 23:29:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:32,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 23:29:32,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:29:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:32,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:29:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:32,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595337750] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:29:32,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:29:32,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-15 23:29:32,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659063387] [2023-12-15 23:29:32,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:29:32,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 23:29:32,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:32,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 23:29:32,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:29:32,253 INFO L87 Difference]: Start difference. First operand 37411 states and 49990 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 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) [2023-12-15 23:29:32,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:32,535 INFO L93 Difference]: Finished difference Result 84192 states and 111525 transitions. [2023-12-15 23:29:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 23:29:32,536 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 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 66 [2023-12-15 23:29:32,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:32,599 INFO L225 Difference]: With dead ends: 84192 [2023-12-15 23:29:32,599 INFO L226 Difference]: Without dead ends: 53610 [2023-12-15 23:29:32,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-15 23:29:32,627 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 876 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:32,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 286 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:29:32,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53610 states. [2023-12-15 23:29:33,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53610 to 37841. [2023-12-15 23:29:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37841 states, 37840 states have (on average 1.3270084566596194) internal successors, (50214), 37840 states have internal predecessors, (50214), 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) [2023-12-15 23:29:33,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37841 states to 37841 states and 50214 transitions. [2023-12-15 23:29:33,290 INFO L78 Accepts]: Start accepts. Automaton has 37841 states and 50214 transitions. Word has length 66 [2023-12-15 23:29:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:33,290 INFO L495 AbstractCegarLoop]: Abstraction has 37841 states and 50214 transitions. [2023-12-15 23:29:33,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 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) [2023-12-15 23:29:33,291 INFO L276 IsEmpty]: Start isEmpty. Operand 37841 states and 50214 transitions. [2023-12-15 23:29:33,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 23:29:33,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:33,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:33,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 23:29:33,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 23:29:33,513 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:33,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:33,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1747084819, now seen corresponding path program 1 times [2023-12-15 23:29:33,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:33,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964364591] [2023-12-15 23:29:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:33,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:33,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:33,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964364591] [2023-12-15 23:29:33,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964364591] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:29:33,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147012284] [2023-12-15 23:29:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:33,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:29:33,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:29:33,613 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) [2023-12-15 23:29:33,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 23:29:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:33,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 23:29:33,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:29:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:33,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:29:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147012284] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:29:33,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:29:33,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-15 23:29:33,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135190834] [2023-12-15 23:29:33,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:29:33,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-15 23:29:33,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:33,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-15 23:29:33,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-12-15 23:29:33,888 INFO L87 Difference]: Start difference. First operand 37841 states and 50214 transitions. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 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) [2023-12-15 23:29:34,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:34,379 INFO L93 Difference]: Finished difference Result 91818 states and 120941 transitions. [2023-12-15 23:29:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 23:29:34,379 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 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 66 [2023-12-15 23:29:34,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:34,454 INFO L225 Difference]: With dead ends: 91818 [2023-12-15 23:29:34,454 INFO L226 Difference]: Without dead ends: 71230 [2023-12-15 23:29:34,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-12-15 23:29:34,470 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 846 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:34,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 347 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:29:34,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71230 states. [2023-12-15 23:29:35,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71230 to 42997. [2023-12-15 23:29:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42997 states, 42996 states have (on average 1.3249837194157597) internal successors, (56969), 42996 states have internal predecessors, (56969), 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) [2023-12-15 23:29:35,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42997 states to 42997 states and 56969 transitions. [2023-12-15 23:29:35,125 INFO L78 Accepts]: Start accepts. Automaton has 42997 states and 56969 transitions. Word has length 66 [2023-12-15 23:29:35,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:35,125 INFO L495 AbstractCegarLoop]: Abstraction has 42997 states and 56969 transitions. [2023-12-15 23:29:35,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 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) [2023-12-15 23:29:35,126 INFO L276 IsEmpty]: Start isEmpty. Operand 42997 states and 56969 transitions. [2023-12-15 23:29:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-15 23:29:35,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:35,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:35,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 23:29:35,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:29:35,335 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:35,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:35,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1634547071, now seen corresponding path program 1 times [2023-12-15 23:29:35,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:35,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816415983] [2023-12-15 23:29:35,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:35,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:35,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:35,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816415983] [2023-12-15 23:29:35,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816415983] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:29:35,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:29:35,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:29:35,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550838209] [2023-12-15 23:29:35,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:29:35,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:29:35,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:35,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:29:35,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:35,371 INFO L87 Difference]: Start difference. First operand 42997 states and 56969 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2023-12-15 23:29:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:35,472 INFO L93 Difference]: Finished difference Result 49653 states and 65370 transitions. [2023-12-15 23:29:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:29:35,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2023-12-15 23:29:35,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:35,506 INFO L225 Difference]: With dead ends: 49653 [2023-12-15 23:29:35,506 INFO L226 Difference]: Without dead ends: 33591 [2023-12-15 23:29:35,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:29:35,522 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 60 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:35,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 262 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:29:35,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33591 states. [2023-12-15 23:29:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33591 to 33572. [2023-12-15 23:29:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33572 states, 33571 states have (on average 1.3002889398588067) internal successors, (43652), 33571 states have internal predecessors, (43652), 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) [2023-12-15 23:29:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33572 states to 33572 states and 43652 transitions. [2023-12-15 23:29:35,992 INFO L78 Accepts]: Start accepts. Automaton has 33572 states and 43652 transitions. Word has length 68 [2023-12-15 23:29:35,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:35,992 INFO L495 AbstractCegarLoop]: Abstraction has 33572 states and 43652 transitions. [2023-12-15 23:29:35,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2023-12-15 23:29:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 33572 states and 43652 transitions. [2023-12-15 23:29:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-15 23:29:35,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:35,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:35,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 23:29:35,996 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:35,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:35,997 INFO L85 PathProgramCache]: Analyzing trace with hash 293985688, now seen corresponding path program 1 times [2023-12-15 23:29:35,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:35,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876461585] [2023-12-15 23:29:35,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:35,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:36,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:36,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876461585] [2023-12-15 23:29:36,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876461585] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:29:36,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238072456] [2023-12-15 23:29:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:36,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:29:36,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:29:36,327 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) [2023-12-15 23:29:36,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 23:29:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:36,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 23:29:36,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:29:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:36,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:29:37,129 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:37,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238072456] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:29:37,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:29:37,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-15 23:29:37,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562645874] [2023-12-15 23:29:37,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:29:37,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 23:29:37,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:37,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 23:29:37,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-15 23:29:37,130 INFO L87 Difference]: Start difference. First operand 33572 states and 43652 transitions. Second operand has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 18 states have internal predecessors, (161), 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) [2023-12-15 23:29:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:39,310 INFO L93 Difference]: Finished difference Result 174351 states and 224005 transitions. [2023-12-15 23:29:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-12-15 23:29:39,311 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 18 states have internal predecessors, (161), 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 68 [2023-12-15 23:29:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:39,474 INFO L225 Difference]: With dead ends: 174351 [2023-12-15 23:29:39,474 INFO L226 Difference]: Without dead ends: 146522 [2023-12-15 23:29:39,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1657 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1371, Invalid=4179, Unknown=0, NotChecked=0, Total=5550 [2023-12-15 23:29:39,510 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 1746 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1746 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:39,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1746 Valid, 1641 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 23:29:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146522 states. [2023-12-15 23:29:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146522 to 52298. [2023-12-15 23:29:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52298 states, 52297 states have (on average 1.3056963114518998) internal successors, (68284), 52297 states have internal predecessors, (68284), 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) [2023-12-15 23:29:40,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52298 states to 52298 states and 68284 transitions. [2023-12-15 23:29:40,638 INFO L78 Accepts]: Start accepts. Automaton has 52298 states and 68284 transitions. Word has length 68 [2023-12-15 23:29:40,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:40,639 INFO L495 AbstractCegarLoop]: Abstraction has 52298 states and 68284 transitions. [2023-12-15 23:29:40,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 18 states have internal predecessors, (161), 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) [2023-12-15 23:29:40,639 INFO L276 IsEmpty]: Start isEmpty. Operand 52298 states and 68284 transitions. [2023-12-15 23:29:40,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-15 23:29:40,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:40,644 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:40,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 23:29:40,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:29:40,848 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:40,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:40,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1582697089, now seen corresponding path program 1 times [2023-12-15 23:29:40,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:40,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538750137] [2023-12-15 23:29:40,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:40,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:41,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:41,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538750137] [2023-12-15 23:29:41,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538750137] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:29:41,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975324453] [2023-12-15 23:29:41,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:41,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:29:41,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:29:41,074 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) [2023-12-15 23:29:41,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 23:29:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:41,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 23:29:41,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:29:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:41,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:29:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:41,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975324453] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:29:41,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:29:41,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-15 23:29:41,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715705883] [2023-12-15 23:29:41,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:29:41,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-15 23:29:41,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:41,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-15 23:29:41,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-12-15 23:29:41,873 INFO L87 Difference]: Start difference. First operand 52298 states and 68284 transitions. Second operand has 19 states, 19 states have (on average 7.7368421052631575) internal successors, (147), 18 states have internal predecessors, (147), 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) [2023-12-15 23:29:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:29:44,088 INFO L93 Difference]: Finished difference Result 308398 states and 399318 transitions. [2023-12-15 23:29:44,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-15 23:29:44,089 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.7368421052631575) internal successors, (147), 18 states have internal predecessors, (147), 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 68 [2023-12-15 23:29:44,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:29:44,454 INFO L225 Difference]: With dead ends: 308398 [2023-12-15 23:29:44,454 INFO L226 Difference]: Without dead ends: 264325 [2023-12-15 23:29:44,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=914, Invalid=2746, Unknown=0, NotChecked=0, Total=3660 [2023-12-15 23:29:44,528 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 1791 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 23:29:44,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1791 Valid, 2224 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 23:29:45,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264325 states. [2023-12-15 23:29:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264325 to 108664. [2023-12-15 23:29:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108664 states, 108663 states have (on average 1.292482261671406) internal successors, (140445), 108663 states have internal predecessors, (140445), 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) [2023-12-15 23:29:47,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108664 states to 108664 states and 140445 transitions. [2023-12-15 23:29:47,299 INFO L78 Accepts]: Start accepts. Automaton has 108664 states and 140445 transitions. Word has length 68 [2023-12-15 23:29:47,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:29:47,299 INFO L495 AbstractCegarLoop]: Abstraction has 108664 states and 140445 transitions. [2023-12-15 23:29:47,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.7368421052631575) internal successors, (147), 18 states have internal predecessors, (147), 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) [2023-12-15 23:29:47,299 INFO L276 IsEmpty]: Start isEmpty. Operand 108664 states and 140445 transitions. [2023-12-15 23:29:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-15 23:29:47,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:29:47,304 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:29:47,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 23:29:47,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:29:47,506 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:29:47,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:29:47,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1956839518, now seen corresponding path program 1 times [2023-12-15 23:29:47,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:29:47,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199034276] [2023-12-15 23:29:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:47,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:29:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:47,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:29:47,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199034276] [2023-12-15 23:29:47,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199034276] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:29:47,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61636876] [2023-12-15 23:29:47,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:29:47,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:29:47,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:29:47,680 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) [2023-12-15 23:29:47,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 23:29:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:29:47,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-15 23:29:47,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:29:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:49,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:29:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:29:51,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61636876] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:29:51,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:29:51,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 16] total 38 [2023-12-15 23:29:51,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307455524] [2023-12-15 23:29:51,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:29:51,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-15 23:29:51,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:29:51,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-15 23:29:51,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1262, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 23:29:51,031 INFO L87 Difference]: Start difference. First operand 108664 states and 140445 transitions. Second operand has 38 states, 38 states have (on average 4.868421052631579) internal successors, (185), 38 states have internal predecessors, (185), 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) Received shutdown request... [2023-12-15 23:30:27,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 296 states. [2023-12-15 23:30:27,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45416 ImplicationChecksByTransitivity, 33.9s TimeCoverageRelationStatistics Valid=12607, Invalid=97285, Unknown=0, NotChecked=0, Total=109892 [2023-12-15 23:30:27,596 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 7156 mSDsluCounter, 2573 mSDsCounter, 0 mSdLazyCounter, 4630 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7156 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 4850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 4630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-15 23:30:27,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7156 Valid, 2792 Invalid, 4850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 4630 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-15 23:30:27,598 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:30:27,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 23:30:27,628 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 [2023-12-15 23:30:27,628 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:30:27,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:30:27,803 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (108664states) and FLOYD_HOARE automaton (currently 296 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 332 known predicates. [2023-12-15 23:30:27,806 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:30:27,808 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:30:27,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:30:27 BoogieIcfgContainer [2023-12-15 23:30:27,809 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:30:27,810 INFO L158 Benchmark]: Toolchain (without parser) took 66023.13ms. Allocated memory was 304.1MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 259.1MB in the beginning and 5.0GB in the end (delta: -4.7GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-15 23:30:27,810 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 198.2MB. Free memory is still 147.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:30:27,810 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.33ms. Allocated memory is still 304.1MB. Free memory was 259.1MB in the beginning and 243.3MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-15 23:30:27,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.02ms. Allocated memory is still 304.1MB. Free memory was 243.3MB in the beginning and 240.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 23:30:27,810 INFO L158 Benchmark]: Boogie Preprocessor took 36.08ms. Allocated memory is still 304.1MB. Free memory was 240.8MB in the beginning and 238.1MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:30:27,810 INFO L158 Benchmark]: RCFGBuilder took 449.11ms. Allocated memory is still 304.1MB. Free memory was 238.1MB in the beginning and 213.5MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-15 23:30:27,810 INFO L158 Benchmark]: TraceAbstraction took 65227.96ms. Allocated memory was 304.1MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 213.0MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-15 23:30:27,811 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 198.2MB. Free memory is still 147.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 248.33ms. Allocated memory is still 304.1MB. Free memory was 259.1MB in the beginning and 243.3MB in the end (delta: 15.8MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.02ms. Allocated memory is still 304.1MB. Free memory was 243.3MB in the beginning and 240.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.08ms. Allocated memory is still 304.1MB. Free memory was 240.8MB in the beginning and 238.1MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 449.11ms. Allocated memory is still 304.1MB. Free memory was 238.1MB in the beginning and 213.5MB in the end (delta: 24.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 65227.96ms. Allocated memory was 304.1MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 213.0MB in the beginning and 5.0GB in the end (delta: -4.8GB). Peak memory consumption was 1.8GB. 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: 212]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 212). Cancelled while NwaCegarLoop was constructing difference of abstraction (108664states) and FLOYD_HOARE automaton (currently 296 states, 38 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 332 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65.2s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 45.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17877 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17877 mSDsluCounter, 13793 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10357 mSDsCounter, 339 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9092 IncrementalHoareTripleChecker+Invalid, 9431 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 339 mSolverCounterUnsat, 3436 mSDtfsCounter, 9092 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1443 GetRequests, 863 SyntacticMatches, 17 SemanticMatches, 562 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48201 ImplicationChecksByTransitivity, 36.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108664occurred in iteration=22, InterpolantAutomatonStates: 208, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.0s AutomataMinimizationTime, 22 MinimizatonAttempts, 331114 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 1730 NumberOfCodeBlocks, 1730 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 2153 ConstructedInterpolants, 0 QuantifiedInterpolants, 16830 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1902 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 37 InterpolantComputations, 16 PerfectInterpolantSequences, 206/311 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