/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:15:12,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:15:12,845 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:15:12,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:15:12,849 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:15:12,871 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:15:12,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:15:12,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:15:12,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:15:12,875 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:15:12,875 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:15:12,875 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:15:12,876 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:15:12,877 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:15:12,877 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:15:12,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:15:12,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:15:12,877 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:15:12,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:15:12,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:15:12,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:15:12,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:15:12,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:15:12,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:15:12,879 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:15:12,879 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:15:12,879 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:15:12,879 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:15:12,880 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:15:12,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:15:12,881 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:15:12,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:15:12,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:15:12,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:15:12,882 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:15:12,882 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:15:12,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:15:12,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:15:12,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:15:12,882 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:15:12,882 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:15:12,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:15:12,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:15:12,883 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:15:13,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:15:13,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:15:13,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:15:13,093 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:15:13,094 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:15:13,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label40.c [2023-12-16 02:15:14,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:15:14,536 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:15:14,537 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label40.c [2023-12-16 02:15:14,555 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11593367a/a7c9e8a8df0c414a9410a90cc121cb6a/FLAG7735eba22 [2023-12-16 02:15:14,569 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11593367a/a7c9e8a8df0c414a9410a90cc121cb6a [2023-12-16 02:15:14,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:15:14,571 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:15:14,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:15:14,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:15:14,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:15:14,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:15:14" (1/1) ... [2023-12-16 02:15:14,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54aff8fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:14, skipping insertion in model container [2023-12-16 02:15:14,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:15:14" (1/1) ... [2023-12-16 02:15:14,649 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:15:14,838 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label40.c[3467,3480] [2023-12-16 02:15:15,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:15:15,293 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:15:15,311 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label40.c[3467,3480] [2023-12-16 02:15:15,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:15:15,517 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:15:15,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15 WrapperNode [2023-12-16 02:15:15,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:15:15,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:15:15,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:15:15,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:15:15,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15" (1/1) ... [2023-12-16 02:15:15,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15" (1/1) ... [2023-12-16 02:15:15,769 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-16 02:15:15,769 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:15:15,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:15:15,770 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:15:15,770 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:15:15,778 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15" (1/1) ... [2023-12-16 02:15:15,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15" (1/1) ... [2023-12-16 02:15:15,818 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15" (1/1) ... [2023-12-16 02:15:15,998 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 02:15:15,999 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15" (1/1) ... [2023-12-16 02:15:15,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15" (1/1) ... [2023-12-16 02:15:16,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15" (1/1) ... [2023-12-16 02:15:16,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15" (1/1) ... [2023-12-16 02:15:16,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15" (1/1) ... [2023-12-16 02:15:16,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15" (1/1) ... [2023-12-16 02:15:16,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:15:16,154 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:15:16,154 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:15:16,154 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:15:16,155 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15" (1/1) ... [2023-12-16 02:15:16,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:15:16,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:15:16,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 02:15:16,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 02:15:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:15:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:15:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:15:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:15:16,338 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:15:16,340 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:15:18,598 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:15:18,643 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:15:18,643 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:15:18,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:15:18 BoogieIcfgContainer [2023-12-16 02:15:18,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:15:18,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:15:18,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:15:18,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:15:18,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:15:14" (1/3) ... [2023-12-16 02:15:18,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea74702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:15:18, skipping insertion in model container [2023-12-16 02:15:18,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:15:15" (2/3) ... [2023-12-16 02:15:18,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea74702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:15:18, skipping insertion in model container [2023-12-16 02:15:18,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:15:18" (3/3) ... [2023-12-16 02:15:18,649 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label40.c [2023-12-16 02:15:18,661 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:15:18,661 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:15:18,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:15:18,703 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;@5a169c19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:15:18,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:15:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 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) [2023-12-16 02:15:18,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 02:15:18,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:18,712 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] [2023-12-16 02:15:18,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:18,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:18,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1197308682, now seen corresponding path program 1 times [2023-12-16 02:15:18,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:18,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599564400] [2023-12-16 02:15:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:18,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:18,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:18,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599564400] [2023-12-16 02:15:18,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599564400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:18,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:18,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:15:18,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409662734] [2023-12-16 02:15:18,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:18,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:15:18,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:18,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:15:18,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:15:18,841 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 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 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:15:18,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:18,879 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-16 02:15:18,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:15:18,881 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2023-12-16 02:15:18,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:18,891 INFO L225 Difference]: With dead ends: 1055 [2023-12-16 02:15:18,891 INFO L226 Difference]: Without dead ends: 526 [2023-12-16 02:15:18,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:15:18,898 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:18,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:15:18,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-16 02:15:18,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-16 02:15:18,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 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) [2023-12-16 02:15:18,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-16 02:15:18,955 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 21 [2023-12-16 02:15:18,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:18,955 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-16 02:15:18,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2023-12-16 02:15:18,955 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-16 02:15:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-16 02:15:18,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:18,956 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] [2023-12-16 02:15:18,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 02:15:18,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:18,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:18,957 INFO L85 PathProgramCache]: Analyzing trace with hash -817929518, now seen corresponding path program 1 times [2023-12-16 02:15:18,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:18,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242750567] [2023-12-16 02:15:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:18,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:19,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:19,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242750567] [2023-12-16 02:15:19,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242750567] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:19,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:19,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:15:19,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137873750] [2023-12-16 02:15:19,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:19,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:19,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:19,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:19,035 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:15:20,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:20,945 INFO L93 Difference]: Finished difference Result 1499 states and 2693 transitions. [2023-12-16 02:15:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:20,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-16 02:15:20,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:20,954 INFO L225 Difference]: With dead ends: 1499 [2023-12-16 02:15:20,954 INFO L226 Difference]: Without dead ends: 974 [2023-12-16 02:15:20,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:20,956 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 452 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:20,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 495 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 02:15:20,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-16 02:15:20,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 971. [2023-12-16 02:15:20,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5082474226804123) internal successors, (1463), 970 states have internal predecessors, (1463), 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) [2023-12-16 02:15:20,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1463 transitions. [2023-12-16 02:15:20,993 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1463 transitions. Word has length 21 [2023-12-16 02:15:21,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:21,002 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1463 transitions. [2023-12-16 02:15:21,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:15:21,003 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1463 transitions. [2023-12-16 02:15:21,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 02:15:21,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:21,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:21,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 02:15:21,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:21,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:21,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1555119842, now seen corresponding path program 1 times [2023-12-16 02:15:21,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:21,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066147132] [2023-12-16 02:15:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:21,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:21,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:21,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066147132] [2023-12-16 02:15:21,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066147132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:21,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:21,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:21,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809041349] [2023-12-16 02:15:21,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:21,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:21,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:21,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:21,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:21,230 INFO L87 Difference]: Start difference. First operand 971 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-12-16 02:15:22,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:22,929 INFO L93 Difference]: Finished difference Result 2813 states and 4241 transitions. [2023-12-16 02:15:22,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:22,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 91 [2023-12-16 02:15:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:22,935 INFO L225 Difference]: With dead ends: 2813 [2023-12-16 02:15:22,935 INFO L226 Difference]: Without dead ends: 1843 [2023-12-16 02:15:22,936 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 [2023-12-16 02:15:22,937 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 469 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:22,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 918 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:15:22,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2023-12-16 02:15:22,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1841. [2023-12-16 02:15:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3603260869565217) internal successors, (2503), 1840 states have internal predecessors, (2503), 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) [2023-12-16 02:15:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2503 transitions. [2023-12-16 02:15:22,965 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2503 transitions. Word has length 91 [2023-12-16 02:15:22,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:22,965 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2503 transitions. [2023-12-16 02:15:22,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-12-16 02:15:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2503 transitions. [2023-12-16 02:15:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-16 02:15:22,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:22,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:22,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 02:15:22,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:22,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:22,969 INFO L85 PathProgramCache]: Analyzing trace with hash 854262977, now seen corresponding path program 1 times [2023-12-16 02:15:22,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:22,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342229700] [2023-12-16 02:15:22,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:22,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:23,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:23,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342229700] [2023-12-16 02:15:23,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342229700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:23,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:23,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:15:23,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311715419] [2023-12-16 02:15:23,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:23,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:23,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:23,109 INFO L87 Difference]: Start difference. First operand 1841 states and 2503 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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) [2023-12-16 02:15:24,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:24,712 INFO L93 Difference]: Finished difference Result 5394 states and 7325 transitions. [2023-12-16 02:15:24,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:24,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 113 [2023-12-16 02:15:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:24,722 INFO L225 Difference]: With dead ends: 5394 [2023-12-16 02:15:24,722 INFO L226 Difference]: Without dead ends: 2700 [2023-12-16 02:15:24,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:24,733 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:24,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:15:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-12-16 02:15:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2700. [2023-12-16 02:15:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2699 states have (on average 1.1919229344201556) internal successors, (3217), 2699 states have internal predecessors, (3217), 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) [2023-12-16 02:15:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3217 transitions. [2023-12-16 02:15:24,771 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3217 transitions. Word has length 113 [2023-12-16 02:15:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:24,772 INFO L495 AbstractCegarLoop]: Abstraction has 2700 states and 3217 transitions. [2023-12-16 02:15:24,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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) [2023-12-16 02:15:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3217 transitions. [2023-12-16 02:15:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-16 02:15:24,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:24,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:15:24,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 02:15:24,781 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:24,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1119335093, now seen corresponding path program 1 times [2023-12-16 02:15:24,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:24,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506914360] [2023-12-16 02:15:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:24,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:24,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:24,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506914360] [2023-12-16 02:15:24,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506914360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:24,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:24,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:24,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137051527] [2023-12-16 02:15:24,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:24,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:24,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:24,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:24,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:24,989 INFO L87 Difference]: Start difference. First operand 2700 states and 3217 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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) [2023-12-16 02:15:26,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:26,392 INFO L93 Difference]: Finished difference Result 7107 states and 8597 transitions. [2023-12-16 02:15:26,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:26,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 173 [2023-12-16 02:15:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:26,402 INFO L225 Difference]: With dead ends: 7107 [2023-12-16 02:15:26,403 INFO L226 Difference]: Without dead ends: 4408 [2023-12-16 02:15:26,405 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 [2023-12-16 02:15:26,406 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:26,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:15:26,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2023-12-16 02:15:26,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4408. [2023-12-16 02:15:26,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 4407 states have (on average 1.1706376219650556) internal successors, (5159), 4407 states have internal predecessors, (5159), 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) [2023-12-16 02:15:26,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 5159 transitions. [2023-12-16 02:15:26,449 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 5159 transitions. Word has length 173 [2023-12-16 02:15:26,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:26,450 INFO L495 AbstractCegarLoop]: Abstraction has 4408 states and 5159 transitions. [2023-12-16 02:15:26,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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) [2023-12-16 02:15:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 5159 transitions. [2023-12-16 02:15:26,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-16 02:15:26,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:26,452 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:26,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 02:15:26,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:26,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:26,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1335749872, now seen corresponding path program 1 times [2023-12-16 02:15:26,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:26,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515397758] [2023-12-16 02:15:26,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:26,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-16 02:15:26,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:26,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515397758] [2023-12-16 02:15:26,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515397758] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:26,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:26,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:26,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561248015] [2023-12-16 02:15:26,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:26,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:26,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:26,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:26,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:26,563 INFO L87 Difference]: Start difference. First operand 4408 states and 5159 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2023-12-16 02:15:28,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:28,091 INFO L93 Difference]: Finished difference Result 10935 states and 12969 transitions. [2023-12-16 02:15:28,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:28,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 175 [2023-12-16 02:15:28,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:28,107 INFO L225 Difference]: With dead ends: 10935 [2023-12-16 02:15:28,107 INFO L226 Difference]: Without dead ends: 6527 [2023-12-16 02:15:28,111 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 [2023-12-16 02:15:28,112 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 428 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:28,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 442 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:15:28,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2023-12-16 02:15:28,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 4381. [2023-12-16 02:15:28,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 4380 states have (on average 1.1684931506849314) internal successors, (5118), 4380 states have internal predecessors, (5118), 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) [2023-12-16 02:15:28,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 5118 transitions. [2023-12-16 02:15:28,174 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 5118 transitions. Word has length 175 [2023-12-16 02:15:28,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:28,174 INFO L495 AbstractCegarLoop]: Abstraction has 4381 states and 5118 transitions. [2023-12-16 02:15:28,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2023-12-16 02:15:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 5118 transitions. [2023-12-16 02:15:28,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-16 02:15:28,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:28,176 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2023-12-16 02:15:28,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 02:15:28,177 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:28,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:28,177 INFO L85 PathProgramCache]: Analyzing trace with hash -228057290, now seen corresponding path program 1 times [2023-12-16 02:15:28,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:28,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590127641] [2023-12-16 02:15:28,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:28,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:28,349 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-16 02:15:28,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:28,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590127641] [2023-12-16 02:15:28,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590127641] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:28,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:28,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:28,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448472130] [2023-12-16 02:15:28,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:28,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:28,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:28,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:28,352 INFO L87 Difference]: Start difference. First operand 4381 states and 5118 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2023-12-16 02:15:30,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:30,016 INFO L93 Difference]: Finished difference Result 10044 states and 11705 transitions. [2023-12-16 02:15:30,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:30,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 241 [2023-12-16 02:15:30,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:30,031 INFO L225 Difference]: With dead ends: 10044 [2023-12-16 02:15:30,031 INFO L226 Difference]: Without dead ends: 5664 [2023-12-16 02:15:30,035 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 [2023-12-16 02:15:30,036 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 414 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:30,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 891 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:15:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5664 states. [2023-12-16 02:15:30,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5664 to 5233. [2023-12-16 02:15:30,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 1.1588302752293578) internal successors, (6063), 5232 states have internal predecessors, (6063), 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) [2023-12-16 02:15:30,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 6063 transitions. [2023-12-16 02:15:30,105 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 6063 transitions. Word has length 241 [2023-12-16 02:15:30,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:30,105 INFO L495 AbstractCegarLoop]: Abstraction has 5233 states and 6063 transitions. [2023-12-16 02:15:30,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2023-12-16 02:15:30,105 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 6063 transitions. [2023-12-16 02:15:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-16 02:15:30,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:30,108 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:30,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 02:15:30,108 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:30,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:30,109 INFO L85 PathProgramCache]: Analyzing trace with hash 600042419, now seen corresponding path program 1 times [2023-12-16 02:15:30,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:30,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263581823] [2023-12-16 02:15:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:30,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-16 02:15:30,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:30,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263581823] [2023-12-16 02:15:30,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263581823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:30,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:30,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:30,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906082850] [2023-12-16 02:15:30,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:30,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:30,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:30,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:30,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:30,258 INFO L87 Difference]: Start difference. First operand 5233 states and 6063 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-12-16 02:15:31,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:31,806 INFO L93 Difference]: Finished difference Result 12592 states and 14782 transitions. [2023-12-16 02:15:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:31,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 253 [2023-12-16 02:15:31,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:31,830 INFO L225 Difference]: With dead ends: 12592 [2023-12-16 02:15:31,830 INFO L226 Difference]: Without dead ends: 6935 [2023-12-16 02:15:31,836 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 [2023-12-16 02:15:31,837 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 383 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:31,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 844 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:15:31,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6935 states. [2023-12-16 02:15:31,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6935 to 6935. [2023-12-16 02:15:31,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6935 states, 6934 states have (on average 1.1322468993366022) internal successors, (7851), 6934 states have internal predecessors, (7851), 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) [2023-12-16 02:15:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6935 states to 6935 states and 7851 transitions. [2023-12-16 02:15:31,932 INFO L78 Accepts]: Start accepts. Automaton has 6935 states and 7851 transitions. Word has length 253 [2023-12-16 02:15:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:31,932 INFO L495 AbstractCegarLoop]: Abstraction has 6935 states and 7851 transitions. [2023-12-16 02:15:31,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-12-16 02:15:31,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6935 states and 7851 transitions. [2023-12-16 02:15:31,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2023-12-16 02:15:31,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:31,935 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 02:15:31,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 02:15:31,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:31,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:31,936 INFO L85 PathProgramCache]: Analyzing trace with hash 36553750, now seen corresponding path program 1 times [2023-12-16 02:15:31,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:31,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387535187] [2023-12-16 02:15:31,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:31,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:32,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:32,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387535187] [2023-12-16 02:15:32,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387535187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:32,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:32,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:15:32,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423269506] [2023-12-16 02:15:32,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:32,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:15:32,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:32,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:15:32,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:15:32,317 INFO L87 Difference]: Start difference. First operand 6935 states and 7851 transitions. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-12-16 02:15:34,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:34,889 INFO L93 Difference]: Finished difference Result 21979 states and 24836 transitions. [2023-12-16 02:15:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:15:34,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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 293 [2023-12-16 02:15:34,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:34,912 INFO L225 Difference]: With dead ends: 21979 [2023-12-16 02:15:34,912 INFO L226 Difference]: Without dead ends: 15045 [2023-12-16 02:15:34,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:15:34,921 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 828 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:34,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 212 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-16 02:15:34,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15045 states. [2023-12-16 02:15:35,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15045 to 13336. [2023-12-16 02:15:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13336 states, 13335 states have (on average 1.133933258342707) internal successors, (15121), 13335 states have internal predecessors, (15121), 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) [2023-12-16 02:15:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13336 states to 13336 states and 15121 transitions. [2023-12-16 02:15:35,079 INFO L78 Accepts]: Start accepts. Automaton has 13336 states and 15121 transitions. Word has length 293 [2023-12-16 02:15:35,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:35,080 INFO L495 AbstractCegarLoop]: Abstraction has 13336 states and 15121 transitions. [2023-12-16 02:15:35,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2023-12-16 02:15:35,080 INFO L276 IsEmpty]: Start isEmpty. Operand 13336 states and 15121 transitions. [2023-12-16 02:15:35,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2023-12-16 02:15:35,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:35,083 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:35,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 02:15:35,084 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:35,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash -631067637, now seen corresponding path program 1 times [2023-12-16 02:15:35,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:35,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495529730] [2023-12-16 02:15:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:35,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-16 02:15:35,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:35,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495529730] [2023-12-16 02:15:35,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495529730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:35,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:35,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:35,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284821496] [2023-12-16 02:15:35,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:35,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:35,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:35,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:35,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:35,288 INFO L87 Difference]: Start difference. First operand 13336 states and 15121 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-12-16 02:15:37,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:37,163 INFO L93 Difference]: Finished difference Result 35222 states and 39900 transitions. [2023-12-16 02:15:37,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:37,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 310 [2023-12-16 02:15:37,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:37,190 INFO L225 Difference]: With dead ends: 35222 [2023-12-16 02:15:37,191 INFO L226 Difference]: Without dead ends: 21887 [2023-12-16 02:15:37,204 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 [2023-12-16 02:15:37,205 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 479 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:37,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 817 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1364 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 02:15:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21887 states. [2023-12-16 02:15:37,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21887 to 21014. [2023-12-16 02:15:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21014 states, 21013 states have (on average 1.1174986912863465) internal successors, (23482), 21013 states have internal predecessors, (23482), 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) [2023-12-16 02:15:37,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21014 states to 21014 states and 23482 transitions. [2023-12-16 02:15:37,396 INFO L78 Accepts]: Start accepts. Automaton has 21014 states and 23482 transitions. Word has length 310 [2023-12-16 02:15:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:37,396 INFO L495 AbstractCegarLoop]: Abstraction has 21014 states and 23482 transitions. [2023-12-16 02:15:37,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-12-16 02:15:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 21014 states and 23482 transitions. [2023-12-16 02:15:37,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-16 02:15:37,399 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:37,400 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 02:15:37,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 02:15:37,401 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:37,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:37,401 INFO L85 PathProgramCache]: Analyzing trace with hash 770249743, now seen corresponding path program 1 times [2023-12-16 02:15:37,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:37,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778171204] [2023-12-16 02:15:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:37,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-16 02:15:37,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:37,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778171204] [2023-12-16 02:15:37,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778171204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:37,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:37,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:15:37,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827632787] [2023-12-16 02:15:37,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:37,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:37,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:37,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:37,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:37,604 INFO L87 Difference]: Start difference. First operand 21014 states and 23482 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 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) [2023-12-16 02:15:38,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:38,502 INFO L93 Difference]: Finished difference Result 42012 states and 46948 transitions. [2023-12-16 02:15:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:38,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 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 319 [2023-12-16 02:15:38,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:38,527 INFO L225 Difference]: With dead ends: 42012 [2023-12-16 02:15:38,528 INFO L226 Difference]: Without dead ends: 20999 [2023-12-16 02:15:38,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:38,548 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 669 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:38,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 120 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 02:15:38,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20999 states. [2023-12-16 02:15:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20999 to 20994. [2023-12-16 02:15:38,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20994 states, 20993 states have (on average 1.1166579335969133) internal successors, (23442), 20993 states have internal predecessors, (23442), 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) [2023-12-16 02:15:38,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20994 states to 20994 states and 23442 transitions. [2023-12-16 02:15:38,756 INFO L78 Accepts]: Start accepts. Automaton has 20994 states and 23442 transitions. Word has length 319 [2023-12-16 02:15:38,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:38,756 INFO L495 AbstractCegarLoop]: Abstraction has 20994 states and 23442 transitions. [2023-12-16 02:15:38,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 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) [2023-12-16 02:15:38,757 INFO L276 IsEmpty]: Start isEmpty. Operand 20994 states and 23442 transitions. [2023-12-16 02:15:38,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2023-12-16 02:15:38,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:38,764 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:38,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 02:15:38,765 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:38,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:38,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1495553292, now seen corresponding path program 1 times [2023-12-16 02:15:38,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:38,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024396313] [2023-12-16 02:15:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:38,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 223 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:39,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:39,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024396313] [2023-12-16 02:15:39,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024396313] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:15:39,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000859490] [2023-12-16 02:15:39,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:39,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:15:39,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:15:39,294 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) [2023-12-16 02:15:39,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:15:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:39,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 02:15:39,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:15:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 59 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:39,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:15:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-16 02:15:40,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000859490] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 02:15:40,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:15:40,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-12-16 02:15:40,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142642299] [2023-12-16 02:15:40,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:40,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:40,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:40,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:40,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:15:40,110 INFO L87 Difference]: Start difference. First operand 20994 states and 23442 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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) [2023-12-16 02:15:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:41,816 INFO L93 Difference]: Finished difference Result 47093 states and 52962 transitions. [2023-12-16 02:15:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:41,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 336 [2023-12-16 02:15:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:41,930 INFO L225 Difference]: With dead ends: 47093 [2023-12-16 02:15:41,930 INFO L226 Difference]: Without dead ends: 25236 [2023-12-16 02:15:41,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 668 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:15:41,937 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 413 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:41,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 720 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:15:41,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25236 states. [2023-12-16 02:15:42,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25236 to 25233. [2023-12-16 02:15:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25233 states, 25232 states have (on average 1.1082752060875078) internal successors, (27964), 25232 states have internal predecessors, (27964), 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) [2023-12-16 02:15:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25233 states to 25233 states and 27964 transitions. [2023-12-16 02:15:42,172 INFO L78 Accepts]: Start accepts. Automaton has 25233 states and 27964 transitions. Word has length 336 [2023-12-16 02:15:42,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:42,173 INFO L495 AbstractCegarLoop]: Abstraction has 25233 states and 27964 transitions. [2023-12-16 02:15:42,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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) [2023-12-16 02:15:42,173 INFO L276 IsEmpty]: Start isEmpty. Operand 25233 states and 27964 transitions. [2023-12-16 02:15:42,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-16 02:15:42,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:42,177 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:42,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 02:15:42,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 02:15:42,389 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:42,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:42,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1023162934, now seen corresponding path program 1 times [2023-12-16 02:15:42,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:42,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659441182] [2023-12-16 02:15:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:42,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 205 proven. 82 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 02:15:42,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:42,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659441182] [2023-12-16 02:15:42,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659441182] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:15:42,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135420820] [2023-12-16 02:15:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:42,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:15:42,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:15:42,781 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) [2023-12-16 02:15:42,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:15:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:42,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 02:15:42,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:15:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 143 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:43,268 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:15:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:15:43,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135420820] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 02:15:43,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:15:43,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 9 [2023-12-16 02:15:43,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205244113] [2023-12-16 02:15:43,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:43,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 02:15:43,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:43,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 02:15:43,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-16 02:15:43,675 INFO L87 Difference]: Start difference. First operand 25233 states and 27964 transitions. Second operand has 5 states, 5 states have (on average 69.8) internal successors, (349), 4 states have internal predecessors, (349), 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) [2023-12-16 02:15:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:46,329 INFO L93 Difference]: Finished difference Result 68328 states and 75853 transitions. [2023-12-16 02:15:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:15:46,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.8) internal successors, (349), 4 states have internal predecessors, (349), 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 349 [2023-12-16 02:15:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:46,370 INFO L225 Difference]: With dead ends: 68328 [2023-12-16 02:15:46,371 INFO L226 Difference]: Without dead ends: 42238 [2023-12-16 02:15:46,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 691 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-16 02:15:46,392 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 809 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2628 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 2628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:46,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 131 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 2628 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 02:15:46,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42238 states. [2023-12-16 02:15:46,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42238 to 41807. [2023-12-16 02:15:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41807 states, 41806 states have (on average 1.0915418839401043) internal successors, (45633), 41806 states have internal predecessors, (45633), 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) [2023-12-16 02:15:46,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41807 states to 41807 states and 45633 transitions. [2023-12-16 02:15:46,873 INFO L78 Accepts]: Start accepts. Automaton has 41807 states and 45633 transitions. Word has length 349 [2023-12-16 02:15:46,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:46,873 INFO L495 AbstractCegarLoop]: Abstraction has 41807 states and 45633 transitions. [2023-12-16 02:15:46,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.8) internal successors, (349), 4 states have internal predecessors, (349), 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) [2023-12-16 02:15:46,874 INFO L276 IsEmpty]: Start isEmpty. Operand 41807 states and 45633 transitions. [2023-12-16 02:15:46,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-16 02:15:46,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:46,878 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:46,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 02:15:47,082 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,SelfDestructingSolverStorable12 [2023-12-16 02:15:47,083 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:47,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:47,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1047239416, now seen corresponding path program 1 times [2023-12-16 02:15:47,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:47,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387353485] [2023-12-16 02:15:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:47,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 205 proven. 82 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 02:15:47,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:47,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387353485] [2023-12-16 02:15:47,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387353485] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:15:47,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28225119] [2023-12-16 02:15:47,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:47,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:15:47,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:15:47,992 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) [2023-12-16 02:15:48,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:15:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:48,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 02:15:48,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:15:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 205 proven. 82 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 02:15:48,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:15:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 205 proven. 82 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 02:15:49,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28225119] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 02:15:49,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 02:15:49,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-12-16 02:15:49,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591327332] [2023-12-16 02:15:49,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 02:15:49,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 02:15:49,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:49,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 02:15:49,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-16 02:15:49,579 INFO L87 Difference]: Start difference. First operand 41807 states and 45633 transitions. Second operand has 10 states, 10 states have (on average 86.3) internal successors, (863), 9 states have internal predecessors, (863), 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) [2023-12-16 02:15:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:56,063 INFO L93 Difference]: Finished difference Result 104141 states and 113836 transitions. [2023-12-16 02:15:56,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 02:15:56,063 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 86.3) internal successors, (863), 9 states have internal predecessors, (863), 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 364 [2023-12-16 02:15:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:15:56,277 INFO L225 Difference]: With dead ends: 104141 [2023-12-16 02:15:56,278 INFO L226 Difference]: Without dead ends: 62335 [2023-12-16 02:15:56,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-16 02:15:56,289 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 2749 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 7201 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2749 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 8278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 7201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:15:56,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2749 Valid, 262 Invalid, 8278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1077 Valid, 7201 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-12-16 02:15:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62335 states. [2023-12-16 02:15:56,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62335 to 61360. [2023-12-16 02:15:56,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61360 states, 61359 states have (on average 1.0825632751511596) internal successors, (66425), 61359 states have internal predecessors, (66425), 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) [2023-12-16 02:15:57,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61360 states to 61360 states and 66425 transitions. [2023-12-16 02:15:57,136 INFO L78 Accepts]: Start accepts. Automaton has 61360 states and 66425 transitions. Word has length 364 [2023-12-16 02:15:57,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:15:57,152 INFO L495 AbstractCegarLoop]: Abstraction has 61360 states and 66425 transitions. [2023-12-16 02:15:57,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 86.3) internal successors, (863), 9 states have internal predecessors, (863), 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) [2023-12-16 02:15:57,153 INFO L276 IsEmpty]: Start isEmpty. Operand 61360 states and 66425 transitions. [2023-12-16 02:15:57,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2023-12-16 02:15:57,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:15:57,162 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:15:57,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 02:15:57,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:15:57,368 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:15:57,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:15:57,368 INFO L85 PathProgramCache]: Analyzing trace with hash -148393686, now seen corresponding path program 1 times [2023-12-16 02:15:57,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:15:57,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399849850] [2023-12-16 02:15:57,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:15:57,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:15:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:15:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 471 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-16 02:15:58,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:15:58,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399849850] [2023-12-16 02:15:58,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399849850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:15:58,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:15:58,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:15:58,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368742149] [2023-12-16 02:15:58,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:15:58,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:15:58,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:15:58,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:15:58,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:15:58,175 INFO L87 Difference]: Start difference. First operand 61360 states and 66425 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2023-12-16 02:15:59,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:15:59,959 INFO L93 Difference]: Finished difference Result 133368 states and 144383 transitions. [2023-12-16 02:15:59,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:15:59,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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 427 [2023-12-16 02:15:59,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:00,036 INFO L225 Difference]: With dead ends: 133368 [2023-12-16 02:16:00,036 INFO L226 Difference]: Without dead ends: 72859 [2023-12-16 02:16:00,072 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 [2023-12-16 02:16:00,073 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 295 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:00,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 683 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:16:00,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72859 states. [2023-12-16 02:16:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72859 to 71138. [2023-12-16 02:16:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71138 states, 71137 states have (on average 1.0773296596707762) internal successors, (76638), 71137 states have internal predecessors, (76638), 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) [2023-12-16 02:16:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71138 states to 71138 states and 76638 transitions. [2023-12-16 02:16:01,120 INFO L78 Accepts]: Start accepts. Automaton has 71138 states and 76638 transitions. Word has length 427 [2023-12-16 02:16:01,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:01,120 INFO L495 AbstractCegarLoop]: Abstraction has 71138 states and 76638 transitions. [2023-12-16 02:16:01,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2023-12-16 02:16:01,120 INFO L276 IsEmpty]: Start isEmpty. Operand 71138 states and 76638 transitions. [2023-12-16 02:16:01,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-16 02:16:01,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:01,125 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:01,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 02:16:01,125 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:01,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:01,125 INFO L85 PathProgramCache]: Analyzing trace with hash 238521055, now seen corresponding path program 1 times [2023-12-16 02:16:01,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:01,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399307007] [2023-12-16 02:16:01,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:01,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-16 02:16:01,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:01,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399307007] [2023-12-16 02:16:01,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399307007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:01,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:01,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:16:01,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708953099] [2023-12-16 02:16:01,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:01,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:16:01,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:01,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:16:01,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:16:01,701 INFO L87 Difference]: Start difference. First operand 71138 states and 76638 transitions. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 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) [2023-12-16 02:16:03,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:03,928 INFO L93 Difference]: Finished difference Result 141425 states and 152420 transitions. [2023-12-16 02:16:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:16:03,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 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 446 [2023-12-16 02:16:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:04,014 INFO L225 Difference]: With dead ends: 141425 [2023-12-16 02:16:04,015 INFO L226 Difference]: Without dead ends: 71138 [2023-12-16 02:16:04,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:16:04,039 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 742 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2020 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:04,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 649 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 2020 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 02:16:04,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71138 states. [2023-12-16 02:16:04,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71138 to 71138. [2023-12-16 02:16:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71138 states, 71137 states have (on average 1.0762612986209708) internal successors, (76562), 71137 states have internal predecessors, (76562), 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) [2023-12-16 02:16:05,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71138 states to 71138 states and 76562 transitions. [2023-12-16 02:16:05,062 INFO L78 Accepts]: Start accepts. Automaton has 71138 states and 76562 transitions. Word has length 446 [2023-12-16 02:16:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:05,062 INFO L495 AbstractCegarLoop]: Abstraction has 71138 states and 76562 transitions. [2023-12-16 02:16:05,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 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) [2023-12-16 02:16:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 71138 states and 76562 transitions. [2023-12-16 02:16:05,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-12-16 02:16:05,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:05,090 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:05,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 02:16:05,090 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:05,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:05,090 INFO L85 PathProgramCache]: Analyzing trace with hash 240648478, now seen corresponding path program 1 times [2023-12-16 02:16:05,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:05,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016287283] [2023-12-16 02:16:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:05,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 471 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-16 02:16:06,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:06,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016287283] [2023-12-16 02:16:06,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016287283] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:06,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:06,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:16:06,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021960935] [2023-12-16 02:16:06,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:06,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:16:06,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:06,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:16:06,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:06,031 INFO L87 Difference]: Start difference. First operand 71138 states and 76562 transitions. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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) [2023-12-16 02:16:07,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:07,909 INFO L93 Difference]: Finished difference Result 151640 states and 163493 transitions. [2023-12-16 02:16:07,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:16:07,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 533 [2023-12-16 02:16:07,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:08,200 INFO L225 Difference]: With dead ends: 151640 [2023-12-16 02:16:08,200 INFO L226 Difference]: Without dead ends: 80502 [2023-12-16 02:16:08,221 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 [2023-12-16 02:16:08,222 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 245 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:08,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 565 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:16:08,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80502 states. [2023-12-16 02:16:09,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80502 to 79219. [2023-12-16 02:16:09,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79219 states, 79218 states have (on average 1.0749072180565022) internal successors, (85152), 79218 states have internal predecessors, (85152), 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) [2023-12-16 02:16:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79219 states to 79219 states and 85152 transitions. [2023-12-16 02:16:09,461 INFO L78 Accepts]: Start accepts. Automaton has 79219 states and 85152 transitions. Word has length 533 [2023-12-16 02:16:09,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:09,461 INFO L495 AbstractCegarLoop]: Abstraction has 79219 states and 85152 transitions. [2023-12-16 02:16:09,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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) [2023-12-16 02:16:09,462 INFO L276 IsEmpty]: Start isEmpty. Operand 79219 states and 85152 transitions. [2023-12-16 02:16:09,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2023-12-16 02:16:09,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:09,478 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:09,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 02:16:09,478 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:09,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:09,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1816425377, now seen corresponding path program 1 times [2023-12-16 02:16:09,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:09,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586209266] [2023-12-16 02:16:09,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:09,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 698 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-16 02:16:10,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:10,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586209266] [2023-12-16 02:16:10,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586209266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:10,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:10,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:16:10,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212976004] [2023-12-16 02:16:10,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:10,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:16:10,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:10,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:16:10,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:16:10,100 INFO L87 Difference]: Start difference. First operand 79219 states and 85152 transitions. Second operand has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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) [2023-12-16 02:16:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:12,936 INFO L93 Difference]: Finished difference Result 195057 states and 209531 transitions. [2023-12-16 02:16:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:16:12,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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 559 [2023-12-16 02:16:12,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:13,099 INFO L225 Difference]: With dead ends: 195057 [2023-12-16 02:16:13,099 INFO L226 Difference]: Without dead ends: 116264 [2023-12-16 02:16:13,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:16:13,144 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 708 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 2600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:13,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 146 Invalid, 2600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-16 02:16:13,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116264 states. [2023-12-16 02:16:14,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116264 to 98394. [2023-12-16 02:16:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98394 states, 98393 states have (on average 1.073572306973057) internal successors, (105632), 98393 states have internal predecessors, (105632), 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) [2023-12-16 02:16:14,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98394 states to 98394 states and 105632 transitions. [2023-12-16 02:16:14,559 INFO L78 Accepts]: Start accepts. Automaton has 98394 states and 105632 transitions. Word has length 559 [2023-12-16 02:16:14,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:14,560 INFO L495 AbstractCegarLoop]: Abstraction has 98394 states and 105632 transitions. [2023-12-16 02:16:14,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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) [2023-12-16 02:16:14,560 INFO L276 IsEmpty]: Start isEmpty. Operand 98394 states and 105632 transitions. [2023-12-16 02:16:14,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2023-12-16 02:16:14,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:14,569 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-16 02:16:14,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 02:16:14,569 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:14,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:14,570 INFO L85 PathProgramCache]: Analyzing trace with hash 889847339, now seen corresponding path program 1 times [2023-12-16 02:16:14,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:14,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837235597] [2023-12-16 02:16:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:14,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 755 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2023-12-16 02:16:15,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:15,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837235597] [2023-12-16 02:16:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837235597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:15,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:15,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:16:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31394513] [2023-12-16 02:16:15,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:15,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:16:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:16:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:15,111 INFO L87 Difference]: Start difference. First operand 98394 states and 105632 transitions. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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... [2023-12-16 02:16:16,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:16:16,480 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 [2023-12-16 02:16:16,480 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 281 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:16,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 193 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 02:16:16,482 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:16:16,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 02:16:16,483 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (98394states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (57388 states constructed, input type IntersectNwa). [2023-12-16 02:16:16,486 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] [2023-12-16 02:16:16,490 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:16:16,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:16:16 BoogieIcfgContainer [2023-12-16 02:16:16,492 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:16:16,493 INFO L158 Benchmark]: Toolchain (without parser) took 61921.04ms. Allocated memory was 160.4MB in the beginning and 5.7GB in the end (delta: 5.5GB). Free memory was 107.4MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 1.7GB. Max. memory is 8.0GB. [2023-12-16 02:16:16,493 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 160.4MB. Free memory is still 116.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:16:16,494 INFO L158 Benchmark]: CACSL2BoogieTranslator took 944.02ms. Allocated memory was 160.4MB in the beginning and 227.5MB in the end (delta: 67.1MB). Free memory was 107.4MB in the beginning and 179.3MB in the end (delta: -71.9MB). Peak memory consumption was 64.7MB. Max. memory is 8.0GB. [2023-12-16 02:16:16,494 INFO L158 Benchmark]: Boogie Procedure Inliner took 251.13ms. Allocated memory is still 227.5MB. Free memory was 179.3MB in the beginning and 115.9MB in the end (delta: 63.4MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2023-12-16 02:16:16,494 INFO L158 Benchmark]: Boogie Preprocessor took 382.33ms. Allocated memory is still 227.5MB. Free memory was 115.9MB in the beginning and 80.0MB in the end (delta: 35.9MB). Peak memory consumption was 68.4MB. Max. memory is 8.0GB. [2023-12-16 02:16:16,497 INFO L158 Benchmark]: RCFGBuilder took 2489.76ms. Allocated memory was 227.5MB in the beginning and 449.8MB in the end (delta: 222.3MB). Free memory was 80.0MB in the beginning and 327.1MB in the end (delta: -247.1MB). Peak memory consumption was 182.5MB. Max. memory is 8.0GB. [2023-12-16 02:16:16,498 INFO L158 Benchmark]: TraceAbstraction took 57847.03ms. Allocated memory was 449.8MB in the beginning and 5.7GB in the end (delta: 5.2GB). Free memory was 326.6MB in the beginning and 4.2GB in the end (delta: -3.8GB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-16 02:16:16,500 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:16:16,501 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 160.4MB. Free memory is still 116.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 944.02ms. Allocated memory was 160.4MB in the beginning and 227.5MB in the end (delta: 67.1MB). Free memory was 107.4MB in the beginning and 179.3MB in the end (delta: -71.9MB). Peak memory consumption was 64.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 251.13ms. Allocated memory is still 227.5MB. Free memory was 179.3MB in the beginning and 115.9MB in the end (delta: 63.4MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 382.33ms. Allocated memory is still 227.5MB. Free memory was 115.9MB in the beginning and 80.0MB in the end (delta: 35.9MB). Peak memory consumption was 68.4MB. Max. memory is 8.0GB. * RCFGBuilder took 2489.76ms. Allocated memory was 227.5MB in the beginning and 449.8MB in the end (delta: 222.3MB). Free memory was 80.0MB in the beginning and 327.1MB in the end (delta: -247.1MB). Peak memory consumption was 182.5MB. Max. memory is 8.0GB. * TraceAbstraction took 57847.03ms. Allocated memory was 449.8MB in the beginning and 5.7GB in the end (delta: 5.2GB). Free memory was 326.6MB in the beginning and 4.2GB in the end (delta: -3.8GB). Peak memory consumption was 1.6GB. 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: 84]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 84). Cancelled while NwaCegarLoop was constructing difference of abstraction (98394states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (57388 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 528 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.8s, OverallIterations: 19, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 39.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11228 SdHoareTripleChecker+Valid, 33.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11228 mSDsluCounter, 10393 SdHoareTripleChecker+Invalid, 28.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1156 mSDsCounter, 5916 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31711 IncrementalHoareTripleChecker+Invalid, 37627 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5916 mSolverCounterUnsat, 9237 mSDtfsCounter, 31711 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2157 GetRequests, 2111 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98394occurred in iteration=18, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 27452 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 6633 NumberOfCodeBlocks, 6633 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 7657 ConstructedInterpolants, 0 QuantifiedInterpolants, 27413 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1428 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 25 InterpolantComputations, 18 PerfectInterpolantSequences, 6941/7765 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