/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 03:51:10,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 03:51:10,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 03:51:10,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 03:51:10,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 03:51:10,507 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 03:51:10,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 03:51:10,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 03:51:10,508 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 03:51:10,511 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 03:51:10,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 03:51:10,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 03:51:10,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 03:51:10,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 03:51:10,513 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 03:51:10,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 03:51:10,513 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 03:51:10,513 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 03:51:10,513 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 03:51:10,513 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 03:51:10,514 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 03:51:10,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 03:51:10,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 03:51:10,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 03:51:10,515 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 03:51:10,515 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 03:51:10,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 03:51:10,516 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 03:51:10,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 03:51:10,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 03:51:10,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 03:51:10,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 03:51:10,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:51:10,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 03:51:10,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 03:51:10,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 03:51:10,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 03:51:10,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 03:51:10,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 03:51:10,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 03:51:10,518 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 03:51:10,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 03:51:10,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 03:51:10,518 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 03:51:10,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 03:51:10,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 03:51:10,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 03:51:10,708 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 03:51:10,708 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 03:51:10,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label03.c [2023-12-19 03:51:11,816 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 03:51:12,165 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 03:51:12,167 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label03.c [2023-12-19 03:51:12,195 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e5306a25/fd45796aba714a6b95e0dc87633edcb6/FLAG4f0c6d022 [2023-12-19 03:51:12,209 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e5306a25/fd45796aba714a6b95e0dc87633edcb6 [2023-12-19 03:51:12,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 03:51:12,211 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 03:51:12,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 03:51:12,213 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 03:51:12,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 03:51:12,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:51:12" (1/1) ... [2023-12-19 03:51:12,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@515bb4bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:12, skipping insertion in model container [2023-12-19 03:51:12,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:51:12" (1/1) ... [2023-12-19 03:51:12,345 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 03:51:12,539 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/Problem13_label03.c[5036,5049] [2023-12-19 03:51:13,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:51:13,200 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 03:51:13,219 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/Problem13_label03.c[5036,5049] [2023-12-19 03:51:13,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 03:51:13,650 INFO L206 MainTranslator]: Completed translation [2023-12-19 03:51:13,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13 WrapperNode [2023-12-19 03:51:13,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 03:51:13,652 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 03:51:13,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 03:51:13,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 03:51:13,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13" (1/1) ... [2023-12-19 03:51:13,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13" (1/1) ... [2023-12-19 03:51:14,068 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-19 03:51:14,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 03:51:14,069 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 03:51:14,069 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 03:51:14,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 03:51:14,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13" (1/1) ... [2023-12-19 03:51:14,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13" (1/1) ... [2023-12-19 03:51:14,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13" (1/1) ... [2023-12-19 03:51:14,377 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]. [2023-12-19 03:51:14,377 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13" (1/1) ... [2023-12-19 03:51:14,377 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13" (1/1) ... [2023-12-19 03:51:14,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13" (1/1) ... [2023-12-19 03:51:14,574 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13" (1/1) ... [2023-12-19 03:51:14,602 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13" (1/1) ... [2023-12-19 03:51:14,623 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13" (1/1) ... [2023-12-19 03:51:14,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 03:51:14,677 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 03:51:14,677 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 03:51:14,677 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 03:51:14,678 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13" (1/1) ... [2023-12-19 03:51:14,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 03:51:14,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:51:14,707 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) [2023-12-19 03:51:14,709 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 [2023-12-19 03:51:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 03:51:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 03:51:14,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 03:51:14,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 03:51:14,780 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 03:51:14,782 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 03:51:18,610 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 03:51:18,659 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 03:51:18,659 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 03:51:18,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:51:18 BoogieIcfgContainer [2023-12-19 03:51:18,660 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 03:51:18,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 03:51:18,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 03:51:18,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 03:51:18,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:51:12" (1/3) ... [2023-12-19 03:51:18,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1117c56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:51:18, skipping insertion in model container [2023-12-19 03:51:18,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:51:13" (2/3) ... [2023-12-19 03:51:18,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1117c56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:51:18, skipping insertion in model container [2023-12-19 03:51:18,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:51:18" (3/3) ... [2023-12-19 03:51:18,666 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label03.c [2023-12-19 03:51:18,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 03:51:18,681 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 03:51:18,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 03:51:18,732 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;@322cf599, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 03:51:18,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 03:51:18,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 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) [2023-12-19 03:51:18,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-19 03:51:18,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:18,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:18,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:18,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:18,748 INFO L85 PathProgramCache]: Analyzing trace with hash 802872345, now seen corresponding path program 1 times [2023-12-19 03:51:18,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:18,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336903475] [2023-12-19 03:51:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:18,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:18,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:18,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336903475] [2023-12-19 03:51:18,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336903475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:18,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:18,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:18,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807301464] [2023-12-19 03:51:18,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:18,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 03:51:18,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:18,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 03:51:18,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 03:51:18,896 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 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 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:18,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:18,968 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-19 03:51:18,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 03:51:18,970 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-19 03:51:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:18,985 INFO L225 Difference]: With dead ends: 2071 [2023-12-19 03:51:18,985 INFO L226 Difference]: Without dead ends: 1034 [2023-12-19 03:51:18,991 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 [2023-12-19 03:51:18,994 INFO L413 NwaCegarLoop]: 1876 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, 1876 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 [2023-12-19 03:51:18,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 03:51:19,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-19 03:51:19,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-19 03:51:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 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) [2023-12-19 03:51:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-19 03:51:19,065 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 33 [2023-12-19 03:51:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:19,066 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-19 03:51:19,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-19 03:51:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-19 03:51:19,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:19,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:19,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 03:51:19,067 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:19,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:19,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1286506173, now seen corresponding path program 1 times [2023-12-19 03:51:19,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:19,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495324014] [2023-12-19 03:51:19,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:19,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:19,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:19,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495324014] [2023-12-19 03:51:19,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495324014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:19,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:19,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:19,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19005644] [2023-12-19 03:51:19,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:19,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:19,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:19,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:19,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:19,188 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:23,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:23,143 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2023-12-19 03:51:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:23,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-19 03:51:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:23,151 INFO L225 Difference]: With dead ends: 3015 [2023-12-19 03:51:23,151 INFO L226 Difference]: Without dead ends: 1982 [2023-12-19 03:51:23,153 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 [2023-12-19 03:51:23,153 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1021 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:23,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 03:51:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2023-12-19 03:51:23,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2023-12-19 03:51:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.7977178423236515) internal successors, (3466), 1928 states have internal predecessors, (3466), 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) [2023-12-19 03:51:23,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2023-12-19 03:51:23,187 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 33 [2023-12-19 03:51:23,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:23,187 INFO L495 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2023-12-19 03:51:23,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 03:51:23,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2023-12-19 03:51:23,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 03:51:23,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:23,190 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 03:51:23,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 03:51:23,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:23,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:23,191 INFO L85 PathProgramCache]: Analyzing trace with hash -922892455, now seen corresponding path program 1 times [2023-12-19 03:51:23,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:23,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86195105] [2023-12-19 03:51:23,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:23,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:23,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:23,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86195105] [2023-12-19 03:51:23,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86195105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:23,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:23,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:23,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789679347] [2023-12-19 03:51:23,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:23,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:23,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:23,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:23,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:23,349 INFO L87 Difference]: Start difference. First operand 1929 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2023-12-19 03:51:26,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:26,368 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2023-12-19 03:51:26,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:26,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 98 [2023-12-19 03:51:26,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:26,381 INFO L225 Difference]: With dead ends: 5455 [2023-12-19 03:51:26,382 INFO L226 Difference]: Without dead ends: 3527 [2023-12-19 03:51:26,384 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 [2023-12-19 03:51:26,384 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:26,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:51:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2023-12-19 03:51:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2023-12-19 03:51:26,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3524 states have (on average 1.5672531214528944) internal successors, (5523), 3524 states have internal predecessors, (5523), 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) [2023-12-19 03:51:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2023-12-19 03:51:26,428 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 98 [2023-12-19 03:51:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:26,428 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2023-12-19 03:51:26,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2023-12-19 03:51:26,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2023-12-19 03:51:26,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-19 03:51:26,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:26,430 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 03:51:26,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 03:51:26,430 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:26,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:26,431 INFO L85 PathProgramCache]: Analyzing trace with hash -77901718, now seen corresponding path program 1 times [2023-12-19 03:51:26,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:26,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733410657] [2023-12-19 03:51:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:26,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:26,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:26,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733410657] [2023-12-19 03:51:26,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733410657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:26,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:26,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:26,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671525953] [2023-12-19 03:51:26,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:26,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:26,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:26,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:26,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:26,530 INFO L87 Difference]: Start difference. First operand 3525 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2023-12-19 03:51:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:29,316 INFO L93 Difference]: Finished difference Result 10231 states and 16096 transitions. [2023-12-19 03:51:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:29,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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 104 [2023-12-19 03:51:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:29,342 INFO L225 Difference]: With dead ends: 10231 [2023-12-19 03:51:29,342 INFO L226 Difference]: Without dead ends: 6707 [2023-12-19 03:51:29,351 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 [2023-12-19 03:51:29,355 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:29,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 848 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 03:51:29,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6707 states. [2023-12-19 03:51:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6707 to 6699. [2023-12-19 03:51:29,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.4131083905643476) internal successors, (9465), 6698 states have internal predecessors, (9465), 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) [2023-12-19 03:51:29,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2023-12-19 03:51:29,448 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 104 [2023-12-19 03:51:29,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:29,449 INFO L495 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2023-12-19 03:51:29,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 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) [2023-12-19 03:51:29,450 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2023-12-19 03:51:29,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-19 03:51:29,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:29,458 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 03:51:29,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 03:51:29,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:29,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:29,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1031692865, now seen corresponding path program 1 times [2023-12-19 03:51:29,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:29,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205930044] [2023-12-19 03:51:29,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:29,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:29,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:29,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205930044] [2023-12-19 03:51:29,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205930044] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:29,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:29,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:29,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696274489] [2023-12-19 03:51:29,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:29,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:29,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:29,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:29,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:29,577 INFO L87 Difference]: Start difference. First operand 6699 states and 9465 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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) [2023-12-19 03:51:32,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:32,898 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2023-12-19 03:51:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:32,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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 134 [2023-12-19 03:51:32,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:32,923 INFO L225 Difference]: With dead ends: 17442 [2023-12-19 03:51:32,924 INFO L226 Difference]: Without dead ends: 10744 [2023-12-19 03:51:32,932 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 [2023-12-19 03:51:32,933 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:32,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 03:51:32,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2023-12-19 03:51:33,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2023-12-19 03:51:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3563326146057935) internal successors, (14468), 10667 states have internal predecessors, (14468), 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) [2023-12-19 03:51:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2023-12-19 03:51:33,070 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 134 [2023-12-19 03:51:33,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:33,070 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2023-12-19 03:51:33,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 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) [2023-12-19 03:51:33,071 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2023-12-19 03:51:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-19 03:51:33,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:33,072 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 03:51:33,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 03:51:33,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:33,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:33,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1217945350, now seen corresponding path program 1 times [2023-12-19 03:51:33,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:33,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196330447] [2023-12-19 03:51:33,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:33,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:33,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:33,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196330447] [2023-12-19 03:51:33,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196330447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:33,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:33,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:33,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744107851] [2023-12-19 03:51:33,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:33,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:33,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:33,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:33,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:33,343 INFO L87 Difference]: Start difference. First operand 10668 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 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) [2023-12-19 03:51:35,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:35,860 INFO L93 Difference]: Finished difference Result 20548 states and 28118 transitions. [2023-12-19 03:51:35,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:35,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 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 144 [2023-12-19 03:51:35,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:35,893 INFO L225 Difference]: With dead ends: 20548 [2023-12-19 03:51:35,894 INFO L226 Difference]: Without dead ends: 10668 [2023-12-19 03:51:35,901 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 [2023-12-19 03:51:35,903 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:35,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1210 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:51:35,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2023-12-19 03:51:36,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 10668. [2023-12-19 03:51:36,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3539889378456924) internal successors, (14443), 10667 states have internal predecessors, (14443), 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) [2023-12-19 03:51:36,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14443 transitions. [2023-12-19 03:51:36,054 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14443 transitions. Word has length 144 [2023-12-19 03:51:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:36,054 INFO L495 AbstractCegarLoop]: Abstraction has 10668 states and 14443 transitions. [2023-12-19 03:51:36,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 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) [2023-12-19 03:51:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14443 transitions. [2023-12-19 03:51:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-19 03:51:36,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:36,056 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 03:51:36,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 03:51:36,056 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:36,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:36,057 INFO L85 PathProgramCache]: Analyzing trace with hash 385125148, now seen corresponding path program 1 times [2023-12-19 03:51:36,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:36,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608788169] [2023-12-19 03:51:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:36,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-19 03:51:36,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:36,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608788169] [2023-12-19 03:51:36,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608788169] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:36,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:36,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:36,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241171929] [2023-12-19 03:51:36,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:36,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:36,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:36,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:36,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:36,164 INFO L87 Difference]: Start difference. First operand 10668 states and 14443 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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) [2023-12-19 03:51:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:39,311 INFO L93 Difference]: Finished difference Result 30030 states and 41216 transitions. [2023-12-19 03:51:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:39,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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 158 [2023-12-19 03:51:39,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:39,347 INFO L225 Difference]: With dead ends: 30030 [2023-12-19 03:51:39,348 INFO L226 Difference]: Without dead ends: 20150 [2023-12-19 03:51:39,362 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 [2023-12-19 03:51:39,363 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 736 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 3307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:39,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1219 Invalid, 3307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 03:51:39,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20150 states. [2023-12-19 03:51:39,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20150 to 19336. [2023-12-19 03:51:39,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19336 states, 19335 states have (on average 1.2424618567364882) internal successors, (24023), 19335 states have internal predecessors, (24023), 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) [2023-12-19 03:51:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19336 states to 19336 states and 24023 transitions. [2023-12-19 03:51:39,584 INFO L78 Accepts]: Start accepts. Automaton has 19336 states and 24023 transitions. Word has length 158 [2023-12-19 03:51:39,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:39,584 INFO L495 AbstractCegarLoop]: Abstraction has 19336 states and 24023 transitions. [2023-12-19 03:51:39,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 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) [2023-12-19 03:51:39,584 INFO L276 IsEmpty]: Start isEmpty. Operand 19336 states and 24023 transitions. [2023-12-19 03:51:39,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2023-12-19 03:51:39,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:39,587 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 03:51:39,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 03:51:39,587 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:39,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:39,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1493651288, now seen corresponding path program 1 times [2023-12-19 03:51:39,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:39,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786688346] [2023-12-19 03:51:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:39,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-19 03:51:39,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:39,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786688346] [2023-12-19 03:51:39,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786688346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:39,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:39,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 03:51:39,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008263761] [2023-12-19 03:51:39,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:39,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:39,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:39,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:39,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:39,789 INFO L87 Difference]: Start difference. First operand 19336 states and 24023 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2023-12-19 03:51:42,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:42,741 INFO L93 Difference]: Finished difference Result 44988 states and 55627 transitions. [2023-12-19 03:51:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:42,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 245 [2023-12-19 03:51:42,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:42,786 INFO L225 Difference]: With dead ends: 44988 [2023-12-19 03:51:42,786 INFO L226 Difference]: Without dead ends: 26440 [2023-12-19 03:51:42,807 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 [2023-12-19 03:51:42,808 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:42,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:51:42,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26440 states. [2023-12-19 03:51:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26440 to 26433. [2023-12-19 03:51:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26433 states, 26432 states have (on average 1.2005901937046004) internal successors, (31734), 26432 states have internal predecessors, (31734), 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) [2023-12-19 03:51:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26433 states to 26433 states and 31734 transitions. [2023-12-19 03:51:43,056 INFO L78 Accepts]: Start accepts. Automaton has 26433 states and 31734 transitions. Word has length 245 [2023-12-19 03:51:43,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:43,056 INFO L495 AbstractCegarLoop]: Abstraction has 26433 states and 31734 transitions. [2023-12-19 03:51:43,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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) [2023-12-19 03:51:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 26433 states and 31734 transitions. [2023-12-19 03:51:43,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-19 03:51:43,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:43,059 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 03:51:43,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 03:51:43,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:43,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:43,059 INFO L85 PathProgramCache]: Analyzing trace with hash 487406052, now seen corresponding path program 1 times [2023-12-19 03:51:43,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:43,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095909280] [2023-12-19 03:51:43,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:43,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:43,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:43,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095909280] [2023-12-19 03:51:43,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095909280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:43,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:43,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:51:43,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065462253] [2023-12-19 03:51:43,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:43,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:43,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:43,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:43,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:43,165 INFO L87 Difference]: Start difference. First operand 26433 states and 31734 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2023-12-19 03:51:46,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:46,286 INFO L93 Difference]: Finished difference Result 72534 states and 87970 transitions. [2023-12-19 03:51:46,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:46,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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 247 [2023-12-19 03:51:46,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:46,334 INFO L225 Difference]: With dead ends: 72534 [2023-12-19 03:51:46,335 INFO L226 Difference]: Without dead ends: 46102 [2023-12-19 03:51:46,354 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 [2023-12-19 03:51:46,356 INFO L413 NwaCegarLoop]: 1846 mSDtfsCounter, 841 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:46,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1981 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:51:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46102 states. [2023-12-19 03:51:46,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46102 to 43732. [2023-12-19 03:51:46,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43732 states, 43731 states have (on average 1.1691248770894789) internal successors, (51127), 43731 states have internal predecessors, (51127), 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) [2023-12-19 03:51:46,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43732 states to 43732 states and 51127 transitions. [2023-12-19 03:51:46,738 INFO L78 Accepts]: Start accepts. Automaton has 43732 states and 51127 transitions. Word has length 247 [2023-12-19 03:51:46,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:46,738 INFO L495 AbstractCegarLoop]: Abstraction has 43732 states and 51127 transitions. [2023-12-19 03:51:46,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2023-12-19 03:51:46,738 INFO L276 IsEmpty]: Start isEmpty. Operand 43732 states and 51127 transitions. [2023-12-19 03:51:46,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-12-19 03:51:46,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:46,742 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 03:51:46,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 03:51:46,742 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:46,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash 772390, now seen corresponding path program 1 times [2023-12-19 03:51:46,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:46,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24528400] [2023-12-19 03:51:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:46,864 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:46,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:46,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24528400] [2023-12-19 03:51:46,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24528400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:46,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:51:46,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:51:46,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548791406] [2023-12-19 03:51:46,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:46,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:46,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:46,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:46,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:51:46,868 INFO L87 Difference]: Start difference. First operand 43732 states and 51127 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2023-12-19 03:51:50,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:50,115 INFO L93 Difference]: Finished difference Result 106363 states and 126457 transitions. [2023-12-19 03:51:50,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:50,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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 260 [2023-12-19 03:51:50,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:50,207 INFO L225 Difference]: With dead ends: 106363 [2023-12-19 03:51:50,207 INFO L226 Difference]: Without dead ends: 63419 [2023-12-19 03:51:50,233 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 [2023-12-19 03:51:50,233 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 824 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:50,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 926 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 03:51:50,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63419 states. [2023-12-19 03:51:50,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63419 to 61834. [2023-12-19 03:51:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61834 states, 61833 states have (on average 1.1593809131046529) internal successors, (71688), 61833 states have internal predecessors, (71688), 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) [2023-12-19 03:51:50,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61834 states to 61834 states and 71688 transitions. [2023-12-19 03:51:50,773 INFO L78 Accepts]: Start accepts. Automaton has 61834 states and 71688 transitions. Word has length 260 [2023-12-19 03:51:50,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:50,773 INFO L495 AbstractCegarLoop]: Abstraction has 61834 states and 71688 transitions. [2023-12-19 03:51:50,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2023-12-19 03:51:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 61834 states and 71688 transitions. [2023-12-19 03:51:50,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-19 03:51:50,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:50,777 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:51:50,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 03:51:50,777 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:50,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:50,777 INFO L85 PathProgramCache]: Analyzing trace with hash 431495392, now seen corresponding path program 1 times [2023-12-19 03:51:50,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:50,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459799629] [2023-12-19 03:51:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:50,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 63 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 03:51:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459799629] [2023-12-19 03:51:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459799629] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:51:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784565012] [2023-12-19 03:51:51,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:51,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:51:51,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:51:51,936 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) [2023-12-19 03:51:51,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 03:51:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:52,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:51:52,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:51:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 03:51:52,136 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:51:52,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784565012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:52,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:51:52,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 03:51:52,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250834093] [2023-12-19 03:51:52,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:52,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:52,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:52,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:52,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:51:52,137 INFO L87 Difference]: Start difference. First operand 61834 states and 71688 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-12-19 03:51:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:51:54,986 INFO L93 Difference]: Finished difference Result 122878 states and 142582 transitions. [2023-12-19 03:51:54,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:51:54,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 274 [2023-12-19 03:51:54,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:51:55,063 INFO L225 Difference]: With dead ends: 122878 [2023-12-19 03:51:55,063 INFO L226 Difference]: Without dead ends: 61832 [2023-12-19 03:51:55,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:51:55,100 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 1172 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:51:55,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 1435 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:51:55,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61832 states. [2023-12-19 03:51:55,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61832 to 61831. [2023-12-19 03:51:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61831 states, 61830 states have (on average 1.1288371340773087) internal successors, (69796), 61830 states have internal predecessors, (69796), 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) [2023-12-19 03:51:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61831 states to 61831 states and 69796 transitions. [2023-12-19 03:51:55,884 INFO L78 Accepts]: Start accepts. Automaton has 61831 states and 69796 transitions. Word has length 274 [2023-12-19 03:51:55,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:51:55,885 INFO L495 AbstractCegarLoop]: Abstraction has 61831 states and 69796 transitions. [2023-12-19 03:51:55,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-12-19 03:51:55,885 INFO L276 IsEmpty]: Start isEmpty. Operand 61831 states and 69796 transitions. [2023-12-19 03:51:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-12-19 03:51:55,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:51:55,895 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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] [2023-12-19 03:51:55,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 03:51:56,101 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,SelfDestructingSolverStorable10 [2023-12-19 03:51:56,101 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:51:56,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:51:56,102 INFO L85 PathProgramCache]: Analyzing trace with hash 67732316, now seen corresponding path program 1 times [2023-12-19 03:51:56,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:51:56,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065920538] [2023-12-19 03:51:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:56,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:51:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 192 proven. 113 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 03:51:57,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:51:57,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065920538] [2023-12-19 03:51:57,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065920538] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:51:57,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205469546] [2023-12-19 03:51:57,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:51:57,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:51:57,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:51:57,095 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) [2023-12-19 03:51:57,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 03:51:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:51:57,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:51:57,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:51:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 03:51:57,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:51:57,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205469546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:51:57,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:51:57,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 03:51:57,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153994463] [2023-12-19 03:51:57,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:51:57,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:51:57,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:51:57,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:51:57,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:51:57,270 INFO L87 Difference]: Start difference. First operand 61831 states and 69796 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2023-12-19 03:52:00,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:00,145 INFO L93 Difference]: Finished difference Result 122863 states and 138789 transitions. [2023-12-19 03:52:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:00,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 339 [2023-12-19 03:52:00,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:00,221 INFO L225 Difference]: With dead ends: 122863 [2023-12-19 03:52:00,221 INFO L226 Difference]: Without dead ends: 61820 [2023-12-19 03:52:00,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:52:00,256 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1070 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:00,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 816 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 03:52:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61820 states. [2023-12-19 03:52:00,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61820 to 61030. [2023-12-19 03:52:00,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61030 states, 61029 states have (on average 1.0940864179324583) internal successors, (66771), 61029 states have internal predecessors, (66771), 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) [2023-12-19 03:52:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61030 states to 61030 states and 66771 transitions. [2023-12-19 03:52:00,885 INFO L78 Accepts]: Start accepts. Automaton has 61030 states and 66771 transitions. Word has length 339 [2023-12-19 03:52:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:00,886 INFO L495 AbstractCegarLoop]: Abstraction has 61030 states and 66771 transitions. [2023-12-19 03:52:00,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2023-12-19 03:52:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 61030 states and 66771 transitions. [2023-12-19 03:52:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-12-19 03:52:00,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:00,890 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 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] [2023-12-19 03:52:00,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 03:52:01,095 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,SelfDestructingSolverStorable11 [2023-12-19 03:52:01,096 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:01,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1114270145, now seen corresponding path program 1 times [2023-12-19 03:52:01,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:01,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237050770] [2023-12-19 03:52:01,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:01,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-12-19 03:52:01,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:01,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237050770] [2023-12-19 03:52:01,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237050770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:01,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:01,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:01,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830289270] [2023-12-19 03:52:01,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:01,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:01,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:01,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:01,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:01,530 INFO L87 Difference]: Start difference. First operand 61030 states and 66771 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2023-12-19 03:52:05,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:05,313 INFO L93 Difference]: Finished difference Result 127682 states and 140598 transitions. [2023-12-19 03:52:05,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:05,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 362 [2023-12-19 03:52:05,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:05,409 INFO L225 Difference]: With dead ends: 127682 [2023-12-19 03:52:05,409 INFO L226 Difference]: Without dead ends: 77683 [2023-12-19 03:52:05,438 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 [2023-12-19 03:52:05,439 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 987 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 3009 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 3009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:05,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 716 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 3009 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 03:52:05,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77683 states. [2023-12-19 03:52:06,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77683 to 61029. [2023-12-19 03:52:06,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61029 states, 61028 states have (on average 1.09408795962509) internal successors, (66770), 61028 states have internal predecessors, (66770), 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) [2023-12-19 03:52:06,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61029 states to 61029 states and 66770 transitions. [2023-12-19 03:52:06,291 INFO L78 Accepts]: Start accepts. Automaton has 61029 states and 66770 transitions. Word has length 362 [2023-12-19 03:52:06,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:06,291 INFO L495 AbstractCegarLoop]: Abstraction has 61029 states and 66770 transitions. [2023-12-19 03:52:06,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2023-12-19 03:52:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 61029 states and 66770 transitions. [2023-12-19 03:52:06,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2023-12-19 03:52:06,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:06,299 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:06,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 03:52:06,299 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:06,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:06,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1923786648, now seen corresponding path program 1 times [2023-12-19 03:52:06,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:06,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640606925] [2023-12-19 03:52:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:06,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-19 03:52:06,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:06,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640606925] [2023-12-19 03:52:06,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640606925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:06,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:06,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:06,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089239536] [2023-12-19 03:52:06,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:06,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:06,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:06,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:06,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:06,651 INFO L87 Difference]: Start difference. First operand 61029 states and 66770 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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) [2023-12-19 03:52:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:09,970 INFO L93 Difference]: Finished difference Result 141744 states and 156244 transitions. [2023-12-19 03:52:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:09,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 389 [2023-12-19 03:52:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:10,077 INFO L225 Difference]: With dead ends: 141744 [2023-12-19 03:52:10,077 INFO L226 Difference]: Without dead ends: 81503 [2023-12-19 03:52:10,099 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 [2023-12-19 03:52:10,100 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 913 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:10,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 789 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:52:10,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81503 states. [2023-12-19 03:52:10,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81503 to 79911. [2023-12-19 03:52:10,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79911 states, 79910 states have (on average 1.0972093605305968) internal successors, (87678), 79910 states have internal predecessors, (87678), 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) [2023-12-19 03:52:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79911 states to 79911 states and 87678 transitions. [2023-12-19 03:52:11,090 INFO L78 Accepts]: Start accepts. Automaton has 79911 states and 87678 transitions. Word has length 389 [2023-12-19 03:52:11,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:11,091 INFO L495 AbstractCegarLoop]: Abstraction has 79911 states and 87678 transitions. [2023-12-19 03:52:11,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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) [2023-12-19 03:52:11,091 INFO L276 IsEmpty]: Start isEmpty. Operand 79911 states and 87678 transitions. [2023-12-19 03:52:11,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2023-12-19 03:52:11,098 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:11,098 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:11,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 03:52:11,099 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:11,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:11,099 INFO L85 PathProgramCache]: Analyzing trace with hash 47431161, now seen corresponding path program 1 times [2023-12-19 03:52:11,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:11,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883850996] [2023-12-19 03:52:11,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:11,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2023-12-19 03:52:11,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:11,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883850996] [2023-12-19 03:52:11,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883850996] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:11,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:11,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:11,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109022447] [2023-12-19 03:52:11,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:11,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:11,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:11,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:11,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:11,419 INFO L87 Difference]: Start difference. First operand 79911 states and 87678 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2023-12-19 03:52:14,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:14,724 INFO L93 Difference]: Finished difference Result 160613 states and 176157 transitions. [2023-12-19 03:52:14,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:14,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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 422 [2023-12-19 03:52:14,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:14,824 INFO L225 Difference]: With dead ends: 160613 [2023-12-19 03:52:14,824 INFO L226 Difference]: Without dead ends: 81490 [2023-12-19 03:52:14,857 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 [2023-12-19 03:52:14,857 INFO L413 NwaCegarLoop]: 1417 mSDtfsCounter, 1005 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:14,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1502 Invalid, 3084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 03:52:14,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81490 states. [2023-12-19 03:52:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81490 to 79904. [2023-12-19 03:52:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79904 states, 79903 states have (on average 1.0707858278162272) internal successors, (85559), 79903 states have internal predecessors, (85559), 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) [2023-12-19 03:52:15,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79904 states to 79904 states and 85559 transitions. [2023-12-19 03:52:15,676 INFO L78 Accepts]: Start accepts. Automaton has 79904 states and 85559 transitions. Word has length 422 [2023-12-19 03:52:15,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:15,676 INFO L495 AbstractCegarLoop]: Abstraction has 79904 states and 85559 transitions. [2023-12-19 03:52:15,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 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) [2023-12-19 03:52:15,677 INFO L276 IsEmpty]: Start isEmpty. Operand 79904 states and 85559 transitions. [2023-12-19 03:52:15,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2023-12-19 03:52:15,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:15,696 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-19 03:52:15,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 03:52:15,696 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:15,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:15,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1389963953, now seen corresponding path program 1 times [2023-12-19 03:52:15,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:15,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112954037] [2023-12-19 03:52:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:15,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 714 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2023-12-19 03:52:16,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:16,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112954037] [2023-12-19 03:52:16,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112954037] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:16,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:16,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:16,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162458834] [2023-12-19 03:52:16,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:16,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:52:16,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:16,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:52:16,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:52:16,095 INFO L87 Difference]: Start difference. First operand 79904 states and 85559 transitions. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 3 states have internal predecessors, (342), 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) [2023-12-19 03:52:22,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:22,404 INFO L93 Difference]: Finished difference Result 227752 states and 244795 transitions. [2023-12-19 03:52:22,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:52:22,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 3 states have internal predecessors, (342), 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 554 [2023-12-19 03:52:22,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:22,586 INFO L225 Difference]: With dead ends: 227752 [2023-12-19 03:52:22,587 INFO L226 Difference]: Without dead ends: 148636 [2023-12-19 03:52:22,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:52:22,627 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 1705 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 5979 mSolverCounterSat, 1084 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 7063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1084 IncrementalHoareTripleChecker+Valid, 5979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:22,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 753 Invalid, 7063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1084 Valid, 5979 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 03:52:22,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148636 states. [2023-12-19 03:52:23,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148636 to 120108. [2023-12-19 03:52:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120108 states, 120107 states have (on average 1.0692465884586244) internal successors, (128424), 120107 states have internal predecessors, (128424), 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) [2023-12-19 03:52:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120108 states to 120108 states and 128424 transitions. [2023-12-19 03:52:24,099 INFO L78 Accepts]: Start accepts. Automaton has 120108 states and 128424 transitions. Word has length 554 [2023-12-19 03:52:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:24,100 INFO L495 AbstractCegarLoop]: Abstraction has 120108 states and 128424 transitions. [2023-12-19 03:52:24,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 3 states have internal predecessors, (342), 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) [2023-12-19 03:52:24,100 INFO L276 IsEmpty]: Start isEmpty. Operand 120108 states and 128424 transitions. [2023-12-19 03:52:24,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2023-12-19 03:52:24,117 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:24,117 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:24,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 03:52:24,118 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:24,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:24,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1818926791, now seen corresponding path program 1 times [2023-12-19 03:52:24,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:24,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970574173] [2023-12-19 03:52:24,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:24,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 747 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-19 03:52:24,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:24,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970574173] [2023-12-19 03:52:24,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970574173] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:24,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:24,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:24,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282265983] [2023-12-19 03:52:24,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:24,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:24,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:24,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:24,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:24,596 INFO L87 Difference]: Start difference. First operand 120108 states and 128424 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2023-12-19 03:52:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:28,087 INFO L93 Difference]: Finished difference Result 270926 states and 290661 transitions. [2023-12-19 03:52:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:28,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 567 [2023-12-19 03:52:28,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:28,287 INFO L225 Difference]: With dead ends: 270926 [2023-12-19 03:52:28,287 INFO L226 Difference]: Without dead ends: 149245 [2023-12-19 03:52:28,314 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 [2023-12-19 03:52:28,315 INFO L413 NwaCegarLoop]: 1738 mSDtfsCounter, 783 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:28,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1880 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 03:52:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149245 states. [2023-12-19 03:52:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149245 to 149225. [2023-12-19 03:52:29,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149225 states, 149224 states have (on average 1.0614244357476008) internal successors, (158390), 149224 states have internal predecessors, (158390), 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) [2023-12-19 03:52:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149225 states to 149225 states and 158390 transitions. [2023-12-19 03:52:30,237 INFO L78 Accepts]: Start accepts. Automaton has 149225 states and 158390 transitions. Word has length 567 [2023-12-19 03:52:30,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:30,238 INFO L495 AbstractCegarLoop]: Abstraction has 149225 states and 158390 transitions. [2023-12-19 03:52:30,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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) [2023-12-19 03:52:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 149225 states and 158390 transitions. [2023-12-19 03:52:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2023-12-19 03:52:30,258 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:30,258 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:30,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 03:52:30,259 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:30,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:30,259 INFO L85 PathProgramCache]: Analyzing trace with hash -34874570, now seen corresponding path program 1 times [2023-12-19 03:52:30,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:30,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649193253] [2023-12-19 03:52:30,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:30,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1318 backedges. 944 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-12-19 03:52:30,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:30,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649193253] [2023-12-19 03:52:30,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649193253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:30,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:30,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:30,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812678216] [2023-12-19 03:52:30,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:30,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:30,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:30,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:30,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:30,655 INFO L87 Difference]: Start difference. First operand 149225 states and 158390 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2023-12-19 03:52:34,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:34,876 INFO L93 Difference]: Finished difference Result 337041 states and 359690 transitions. [2023-12-19 03:52:34,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:34,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 576 [2023-12-19 03:52:34,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:35,211 INFO L225 Difference]: With dead ends: 337041 [2023-12-19 03:52:35,211 INFO L226 Difference]: Without dead ends: 206712 [2023-12-19 03:52:35,263 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 [2023-12-19 03:52:35,264 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 1021 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 984 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 3444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 984 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:35,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 630 Invalid, 3444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [984 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 03:52:35,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206712 states. [2023-12-19 03:52:37,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206712 to 206705. [2023-12-19 03:52:37,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206705 states, 206704 states have (on average 1.0615324328508398) internal successors, (219423), 206704 states have internal predecessors, (219423), 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) [2023-12-19 03:52:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206705 states to 206705 states and 219423 transitions. [2023-12-19 03:52:37,910 INFO L78 Accepts]: Start accepts. Automaton has 206705 states and 219423 transitions. Word has length 576 [2023-12-19 03:52:37,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:37,911 INFO L495 AbstractCegarLoop]: Abstraction has 206705 states and 219423 transitions. [2023-12-19 03:52:37,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2023-12-19 03:52:37,911 INFO L276 IsEmpty]: Start isEmpty. Operand 206705 states and 219423 transitions. [2023-12-19 03:52:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2023-12-19 03:52:37,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:37,932 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:52:37,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 03:52:37,932 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:37,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:37,932 INFO L85 PathProgramCache]: Analyzing trace with hash 864271021, now seen corresponding path program 1 times [2023-12-19 03:52:37,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:37,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515327869] [2023-12-19 03:52:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:37,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 301 proven. 113 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-19 03:52:39,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:39,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515327869] [2023-12-19 03:52:39,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515327869] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:52:39,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545515416] [2023-12-19 03:52:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:39,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:52:39,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:52:39,317 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) [2023-12-19 03:52:39,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 03:52:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:39,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:52:39,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:52:39,808 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 03:52:39,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:52:39,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545515416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:39,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:52:39,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 03:52:39,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620629639] [2023-12-19 03:52:39,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:39,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:39,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:39,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:39,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:52:39,811 INFO L87 Difference]: Start difference. First operand 206705 states and 219423 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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) [2023-12-19 03:52:43,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:43,531 INFO L93 Difference]: Finished difference Result 395248 states and 420448 transitions. [2023-12-19 03:52:43,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:43,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 616 [2023-12-19 03:52:43,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:43,858 INFO L225 Difference]: With dead ends: 395248 [2023-12-19 03:52:43,858 INFO L226 Difference]: Without dead ends: 207439 [2023-12-19 03:52:43,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:52:43,942 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 975 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:43,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 361 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 03:52:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207439 states. [2023-12-19 03:52:46,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207439 to 207439. [2023-12-19 03:52:46,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207439 states, 207438 states have (on average 1.0544692872087083) internal successors, (218737), 207438 states have internal predecessors, (218737), 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) [2023-12-19 03:52:46,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207439 states to 207439 states and 218737 transitions. [2023-12-19 03:52:46,804 INFO L78 Accepts]: Start accepts. Automaton has 207439 states and 218737 transitions. Word has length 616 [2023-12-19 03:52:46,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:46,804 INFO L495 AbstractCegarLoop]: Abstraction has 207439 states and 218737 transitions. [2023-12-19 03:52:46,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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) [2023-12-19 03:52:46,804 INFO L276 IsEmpty]: Start isEmpty. Operand 207439 states and 218737 transitions. [2023-12-19 03:52:46,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2023-12-19 03:52:46,821 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:46,821 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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] [2023-12-19 03:52:46,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 03:52:47,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:52:47,029 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:47,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:47,029 INFO L85 PathProgramCache]: Analyzing trace with hash -396962596, now seen corresponding path program 1 times [2023-12-19 03:52:47,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:47,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495367800] [2023-12-19 03:52:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:47,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 590 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-19 03:52:47,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:47,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495367800] [2023-12-19 03:52:47,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495367800] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:47,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:52:47,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:52:47,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690117141] [2023-12-19 03:52:47,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:47,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:47,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:47,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:47,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:52:47,667 INFO L87 Difference]: Start difference. First operand 207439 states and 218737 transitions. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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) [2023-12-19 03:52:51,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:52:51,521 INFO L93 Difference]: Finished difference Result 409362 states and 431635 transitions. [2023-12-19 03:52:51,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:52:51,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 638 [2023-12-19 03:52:51,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:52:51,847 INFO L225 Difference]: With dead ends: 409362 [2023-12-19 03:52:51,847 INFO L226 Difference]: Without dead ends: 202711 [2023-12-19 03:52:52,184 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 [2023-12-19 03:52:52,185 INFO L413 NwaCegarLoop]: 1662 mSDtfsCounter, 791 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 03:52:52,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1794 Invalid, 2840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 03:52:52,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202711 states. [2023-12-19 03:52:54,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202711 to 200343. [2023-12-19 03:52:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200343 states, 200342 states have (on average 1.045037985045572) internal successors, (209365), 200342 states have internal predecessors, (209365), 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) [2023-12-19 03:52:54,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200343 states to 200343 states and 209365 transitions. [2023-12-19 03:52:54,500 INFO L78 Accepts]: Start accepts. Automaton has 200343 states and 209365 transitions. Word has length 638 [2023-12-19 03:52:54,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:52:54,501 INFO L495 AbstractCegarLoop]: Abstraction has 200343 states and 209365 transitions. [2023-12-19 03:52:54,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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) [2023-12-19 03:52:54,501 INFO L276 IsEmpty]: Start isEmpty. Operand 200343 states and 209365 transitions. [2023-12-19 03:52:54,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2023-12-19 03:52:54,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:52:54,520 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 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] [2023-12-19 03:52:54,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 03:52:54,520 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:52:54,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:52:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash 233265993, now seen corresponding path program 1 times [2023-12-19 03:52:54,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:52:54,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280172038] [2023-12-19 03:52:54,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:54,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:52:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 775 proven. 110 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2023-12-19 03:52:55,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:52:55,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280172038] [2023-12-19 03:52:55,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280172038] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:52:55,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978724776] [2023-12-19 03:52:55,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:52:55,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:52:55,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:52:55,761 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:52:55,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 03:52:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:52:55,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 03:52:55,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:52:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 772 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-19 03:52:56,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:52:56,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978724776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:52:56,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:52:56,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-12-19 03:52:56,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840256383] [2023-12-19 03:52:56,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:52:56,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:52:56,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:52:56,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:52:56,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 03:52:56,022 INFO L87 Difference]: Start difference. First operand 200343 states and 209365 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2023-12-19 03:53:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:00,129 INFO L93 Difference]: Finished difference Result 428211 states and 447957 transitions. [2023-12-19 03:53:00,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:53:00,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 652 [2023-12-19 03:53:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:00,499 INFO L225 Difference]: With dead ends: 428211 [2023-12-19 03:53:00,499 INFO L226 Difference]: Without dead ends: 241252 [2023-12-19 03:53:00,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 03:53:00,616 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 923 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 3192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:00,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1652 Invalid, 3192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-19 03:53:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241252 states. [2023-12-19 03:53:03,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241252 to 216849. [2023-12-19 03:53:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216849 states, 216848 states have (on average 1.0407105437910427) internal successors, (225676), 216848 states have internal predecessors, (225676), 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) [2023-12-19 03:53:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216849 states to 216849 states and 225676 transitions. [2023-12-19 03:53:03,827 INFO L78 Accepts]: Start accepts. Automaton has 216849 states and 225676 transitions. Word has length 652 [2023-12-19 03:53:03,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:03,827 INFO L495 AbstractCegarLoop]: Abstraction has 216849 states and 225676 transitions. [2023-12-19 03:53:03,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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) [2023-12-19 03:53:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 216849 states and 225676 transitions. [2023-12-19 03:53:03,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-12-19 03:53:03,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:03,845 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:53:03,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 03:53:04,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:53:04,050 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:04,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:04,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1559502614, now seen corresponding path program 1 times [2023-12-19 03:53:04,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:04,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76714809] [2023-12-19 03:53:04,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:04,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 692 proven. 113 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2023-12-19 03:53:05,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:05,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76714809] [2023-12-19 03:53:05,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76714809] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:53:05,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109803045] [2023-12-19 03:53:05,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:05,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:53:05,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:53:05,406 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:53:05,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 03:53:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:05,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 03:53:05,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:53:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2023-12-19 03:53:06,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:53:06,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109803045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:06,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:53:06,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-19 03:53:06,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443699066] [2023-12-19 03:53:06,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:06,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:53:06,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:06,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:53:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:53:06,101 INFO L87 Difference]: Start difference. First operand 216849 states and 225676 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 2 states have internal predecessors, (298), 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) [2023-12-19 03:53:09,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:09,911 INFO L93 Difference]: Finished difference Result 422692 states and 440254 transitions. [2023-12-19 03:53:09,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:53:09,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 2 states have internal predecessors, (298), 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 657 [2023-12-19 03:53:09,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:10,251 INFO L225 Difference]: With dead ends: 422692 [2023-12-19 03:53:10,251 INFO L226 Difference]: Without dead ends: 220799 [2023-12-19 03:53:10,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 03:53:10,348 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 680 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:10,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1115 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 03:53:10,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220799 states. [2023-12-19 03:53:12,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220799 to 220786. [2023-12-19 03:53:12,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220786 states, 220785 states have (on average 1.036995266888602) internal successors, (228953), 220785 states have internal predecessors, (228953), 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) [2023-12-19 03:53:13,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220786 states to 220786 states and 228953 transitions. [2023-12-19 03:53:13,164 INFO L78 Accepts]: Start accepts. Automaton has 220786 states and 228953 transitions. Word has length 657 [2023-12-19 03:53:13,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:13,164 INFO L495 AbstractCegarLoop]: Abstraction has 220786 states and 228953 transitions. [2023-12-19 03:53:13,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 2 states have internal predecessors, (298), 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) [2023-12-19 03:53:13,164 INFO L276 IsEmpty]: Start isEmpty. Operand 220786 states and 228953 transitions. [2023-12-19 03:53:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2023-12-19 03:53:13,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:13,179 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 03:53:13,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 03:53:13,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-19 03:53:13,388 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:13,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:13,388 INFO L85 PathProgramCache]: Analyzing trace with hash -905860873, now seen corresponding path program 1 times [2023-12-19 03:53:13,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:13,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847334665] [2023-12-19 03:53:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:13,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:14,162 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 63 proven. 64 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2023-12-19 03:53:14,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:14,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847334665] [2023-12-19 03:53:14,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847334665] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:53:14,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422129079] [2023-12-19 03:53:14,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:14,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:53:14,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:53:14,164 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:53:14,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 03:53:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:14,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 03:53:14,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:53:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2023-12-19 03:53:14,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:53:14,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422129079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:14,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:53:14,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 03:53:14,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602998697] [2023-12-19 03:53:14,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:14,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:53:14,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:14,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:53:14,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 03:53:14,454 INFO L87 Difference]: Start difference. First operand 220786 states and 228953 transitions. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2023-12-19 03:53:18,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:18,427 INFO L93 Difference]: Finished difference Result 452580 states and 470124 transitions. [2023-12-19 03:53:18,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:53:18,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 676 [2023-12-19 03:53:18,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:18,992 INFO L225 Difference]: With dead ends: 452580 [2023-12-19 03:53:18,992 INFO L226 Difference]: Without dead ends: 248329 [2023-12-19 03:53:19,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 675 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 03:53:19,181 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 963 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 3110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:19,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 490 Invalid, 3110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 03:53:19,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248329 states. [2023-12-19 03:53:21,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248329 to 236522. [2023-12-19 03:53:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236522 states, 236521 states have (on average 1.03459735076378) internal successors, (244704), 236521 states have internal predecessors, (244704), 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) [2023-12-19 03:53:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236522 states to 236522 states and 244704 transitions. [2023-12-19 03:53:22,280 INFO L78 Accepts]: Start accepts. Automaton has 236522 states and 244704 transitions. Word has length 676 [2023-12-19 03:53:22,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:22,280 INFO L495 AbstractCegarLoop]: Abstraction has 236522 states and 244704 transitions. [2023-12-19 03:53:22,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2023-12-19 03:53:22,280 INFO L276 IsEmpty]: Start isEmpty. Operand 236522 states and 244704 transitions. [2023-12-19 03:53:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2023-12-19 03:53:22,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:22,311 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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] [2023-12-19 03:53:22,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 03:53:22,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:53:22,512 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:22,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash 992994838, now seen corresponding path program 1 times [2023-12-19 03:53:22,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:22,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034525120] [2023-12-19 03:53:22,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:22,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 620 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 03:53:23,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:23,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034525120] [2023-12-19 03:53:23,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034525120] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:23,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:53:23,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:53:23,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197928025] [2023-12-19 03:53:23,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:23,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:53:23,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:23,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:53:23,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:23,133 INFO L87 Difference]: Start difference. First operand 236522 states and 244704 transitions. Second operand has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 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) [2023-12-19 03:53:26,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:26,620 INFO L93 Difference]: Finished difference Result 473052 states and 489424 transitions. [2023-12-19 03:53:26,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:53:26,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 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 853 [2023-12-19 03:53:26,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:26,984 INFO L225 Difference]: With dead ends: 473052 [2023-12-19 03:53:26,984 INFO L226 Difference]: Without dead ends: 237318 [2023-12-19 03:53:27,364 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 [2023-12-19 03:53:27,365 INFO L413 NwaCegarLoop]: 1163 mSDtfsCounter, 781 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:27,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1200 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 03:53:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237318 states. [2023-12-19 03:53:29,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237318 to 232573. [2023-12-19 03:53:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232573 states, 232572 states have (on average 1.0323942693015495) internal successors, (240106), 232572 states have internal predecessors, (240106), 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) [2023-12-19 03:53:30,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232573 states to 232573 states and 240106 transitions. [2023-12-19 03:53:30,301 INFO L78 Accepts]: Start accepts. Automaton has 232573 states and 240106 transitions. Word has length 853 [2023-12-19 03:53:30,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:30,301 INFO L495 AbstractCegarLoop]: Abstraction has 232573 states and 240106 transitions. [2023-12-19 03:53:30,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 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) [2023-12-19 03:53:30,302 INFO L276 IsEmpty]: Start isEmpty. Operand 232573 states and 240106 transitions. [2023-12-19 03:53:30,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2023-12-19 03:53:30,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:30,339 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2023-12-19 03:53:30,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 03:53:30,340 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:30,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:30,340 INFO L85 PathProgramCache]: Analyzing trace with hash 367173690, now seen corresponding path program 1 times [2023-12-19 03:53:30,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:30,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188354610] [2023-12-19 03:53:30,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:30,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 897 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-19 03:53:31,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:31,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188354610] [2023-12-19 03:53:31,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188354610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:31,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:53:31,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:53:31,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680266658] [2023-12-19 03:53:31,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:31,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:53:31,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:31,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:53:31,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:53:31,201 INFO L87 Difference]: Start difference. First operand 232573 states and 240106 transitions. Second operand has 4 states, 4 states have (on average 164.25) internal successors, (657), 3 states have internal predecessors, (657), 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) [2023-12-19 03:53:36,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:36,521 INFO L93 Difference]: Finished difference Result 532112 states and 550173 transitions. [2023-12-19 03:53:36,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:53:36,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 164.25) internal successors, (657), 3 states have internal predecessors, (657), 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 870 [2023-12-19 03:53:36,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:36,946 INFO L225 Difference]: With dead ends: 532112 [2023-12-19 03:53:36,947 INFO L226 Difference]: Without dead ends: 316073 [2023-12-19 03:53:37,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 03:53:37,028 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 1538 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 4506 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 5191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 4506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:37,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 701 Invalid, 5191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 4506 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 03:53:37,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316073 states. [2023-12-19 03:53:40,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316073 to 312117. [2023-12-19 03:53:40,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312117 states, 312116 states have (on average 1.0326769534403875) internal successors, (322315), 312116 states have internal predecessors, (322315), 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) [2023-12-19 03:53:41,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312117 states to 312117 states and 322315 transitions. [2023-12-19 03:53:41,068 INFO L78 Accepts]: Start accepts. Automaton has 312117 states and 322315 transitions. Word has length 870 [2023-12-19 03:53:41,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:41,068 INFO L495 AbstractCegarLoop]: Abstraction has 312117 states and 322315 transitions. [2023-12-19 03:53:41,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.25) internal successors, (657), 3 states have internal predecessors, (657), 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) [2023-12-19 03:53:41,068 INFO L276 IsEmpty]: Start isEmpty. Operand 312117 states and 322315 transitions. [2023-12-19 03:53:41,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 978 [2023-12-19 03:53:41,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:41,131 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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, 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] [2023-12-19 03:53:41,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 03:53:41,131 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:41,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:41,131 INFO L85 PathProgramCache]: Analyzing trace with hash 2076480666, now seen corresponding path program 1 times [2023-12-19 03:53:41,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:41,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972731162] [2023-12-19 03:53:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:41,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1756 backedges. 1198 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2023-12-19 03:53:42,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:42,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972731162] [2023-12-19 03:53:42,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972731162] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:42,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 03:53:42,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 03:53:42,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578581294] [2023-12-19 03:53:42,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:42,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 03:53:42,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:42,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 03:53:42,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 03:53:42,190 INFO L87 Difference]: Start difference. First operand 312117 states and 322315 transitions. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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) [2023-12-19 03:53:46,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:46,333 INFO L93 Difference]: Finished difference Result 636059 states and 656886 transitions. [2023-12-19 03:53:46,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 03:53:46,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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 977 [2023-12-19 03:53:46,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:53:46,844 INFO L225 Difference]: With dead ends: 636059 [2023-12-19 03:53:46,845 INFO L226 Difference]: Without dead ends: 330239 [2023-12-19 03:53:46,969 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 [2023-12-19 03:53:46,970 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 735 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:53:46,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 950 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 03:53:47,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330239 states. [2023-12-19 03:53:50,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330239 to 325500. [2023-12-19 03:53:50,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325500 states, 325499 states have (on average 1.032119914346895) internal successors, (335954), 325499 states have internal predecessors, (335954), 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) [2023-12-19 03:53:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325500 states to 325500 states and 335954 transitions. [2023-12-19 03:53:51,673 INFO L78 Accepts]: Start accepts. Automaton has 325500 states and 335954 transitions. Word has length 977 [2023-12-19 03:53:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:53:51,674 INFO L495 AbstractCegarLoop]: Abstraction has 325500 states and 335954 transitions. [2023-12-19 03:53:51,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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) [2023-12-19 03:53:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 325500 states and 335954 transitions. [2023-12-19 03:53:51,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1020 [2023-12-19 03:53:51,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:53:51,751 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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] [2023-12-19 03:53:51,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 03:53:51,751 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:53:51,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:53:51,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1662538080, now seen corresponding path program 1 times [2023-12-19 03:53:51,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:53:51,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719410400] [2023-12-19 03:53:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:51,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:53:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1905 backedges. 963 proven. 638 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-19 03:53:53,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:53:53,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719410400] [2023-12-19 03:53:53,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719410400] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:53:53,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072497073] [2023-12-19 03:53:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:53:53,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:53:53,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:53:53,141 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:53:53,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 03:53:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:53:53,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 03:53:53,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:53:53,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1905 backedges. 887 proven. 0 refuted. 0 times theorem prover too weak. 1018 trivial. 0 not checked. [2023-12-19 03:53:53,686 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 03:53:53,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072497073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 03:53:53,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 03:53:53,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-19 03:53:53,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513646273] [2023-12-19 03:53:53,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 03:53:53,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 03:53:53,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:53:53,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 03:53:53,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:53:53,688 INFO L87 Difference]: Start difference. First operand 325500 states and 335954 transitions. Second operand has 4 states, 4 states have (on average 124.75) internal successors, (499), 3 states have internal predecessors, (499), 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) [2023-12-19 03:53:59,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:53:59,828 INFO L93 Difference]: Finished difference Result 664475 states and 685786 transitions. [2023-12-19 03:53:59,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 03:53:59,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 124.75) internal successors, (499), 3 states have internal predecessors, (499), 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 1019 [2023-12-19 03:53:59,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:00,563 INFO L225 Difference]: With dead ends: 664475 [2023-12-19 03:54:00,563 INFO L226 Difference]: Without dead ends: 346059 [2023-12-19 03:54:00,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1022 GetRequests, 1017 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-19 03:54:00,681 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 1635 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 5328 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 5963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 5328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:00,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 719 Invalid, 5963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 5328 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-19 03:54:00,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346059 states. [2023-12-19 03:54:04,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346059 to 336523. [2023-12-19 03:54:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336523 states, 336522 states have (on average 1.0318968744985468) internal successors, (347256), 336522 states have internal predecessors, (347256), 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) [2023-12-19 03:54:05,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336523 states to 336523 states and 347256 transitions. [2023-12-19 03:54:05,088 INFO L78 Accepts]: Start accepts. Automaton has 336523 states and 347256 transitions. Word has length 1019 [2023-12-19 03:54:05,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:05,088 INFO L495 AbstractCegarLoop]: Abstraction has 336523 states and 347256 transitions. [2023-12-19 03:54:05,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.75) internal successors, (499), 3 states have internal predecessors, (499), 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) [2023-12-19 03:54:05,089 INFO L276 IsEmpty]: Start isEmpty. Operand 336523 states and 347256 transitions. [2023-12-19 03:54:05,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1174 [2023-12-19 03:54:05,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:05,162 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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, 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, 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] [2023-12-19 03:54:05,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-19 03:54:05,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:54:05,365 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:05,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:05,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2112765297, now seen corresponding path program 1 times [2023-12-19 03:54:05,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:05,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437796315] [2023-12-19 03:54:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:05,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 1082 proven. 228 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-12-19 03:54:06,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:06,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437796315] [2023-12-19 03:54:06,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437796315] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:54:06,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479006704] [2023-12-19 03:54:06,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:06,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:54:06,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:54:06,604 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:54:06,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 03:54:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:06,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 03:54:06,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:54:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 1082 proven. 228 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-12-19 03:54:07,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 03:54:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 1082 proven. 228 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2023-12-19 03:54:08,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479006704] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 03:54:08,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 03:54:08,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-12-19 03:54:08,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990094867] [2023-12-19 03:54:08,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 03:54:08,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 03:54:08,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:08,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 03:54:08,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-19 03:54:08,189 INFO L87 Difference]: Start difference. First operand 336523 states and 347256 transitions. Second operand has 6 states, 6 states have (on average 222.0) internal successors, (1332), 5 states have internal predecessors, (1332), 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) [2023-12-19 03:54:17,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:17,109 INFO L93 Difference]: Finished difference Result 702976 states and 726008 transitions. [2023-12-19 03:54:17,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 03:54:17,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 222.0) internal successors, (1332), 5 states have internal predecessors, (1332), 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 1173 [2023-12-19 03:54:17,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:17,663 INFO L225 Difference]: With dead ends: 702976 [2023-12-19 03:54:17,664 INFO L226 Difference]: Without dead ends: 379045 [2023-12-19 03:54:17,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2347 GetRequests, 2343 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-19 03:54:17,809 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 2649 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 7775 mSolverCounterSat, 2057 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2649 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 9832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2057 IncrementalHoareTripleChecker+Valid, 7775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:17,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2649 Valid, 840 Invalid, 9832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2057 Valid, 7775 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-19 03:54:18,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379045 states. [2023-12-19 03:54:21,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379045 to 267183. [2023-12-19 03:54:21,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267183 states, 267182 states have (on average 1.0265100193875336) internal successors, (274265), 267182 states have internal predecessors, (274265), 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) [2023-12-19 03:54:22,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267183 states to 267183 states and 274265 transitions. [2023-12-19 03:54:22,138 INFO L78 Accepts]: Start accepts. Automaton has 267183 states and 274265 transitions. Word has length 1173 [2023-12-19 03:54:22,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 03:54:22,139 INFO L495 AbstractCegarLoop]: Abstraction has 267183 states and 274265 transitions. [2023-12-19 03:54:22,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.0) internal successors, (1332), 5 states have internal predecessors, (1332), 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) [2023-12-19 03:54:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 267183 states and 274265 transitions. [2023-12-19 03:54:22,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1304 [2023-12-19 03:54:22,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 03:54:22,235 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 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] [2023-12-19 03:54:22,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-19 03:54:22,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 03:54:22,439 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 03:54:22,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 03:54:22,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1327059416, now seen corresponding path program 1 times [2023-12-19 03:54:22,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 03:54:22,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82579618] [2023-12-19 03:54:22,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:22,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 03:54:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 1176 proven. 796 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2023-12-19 03:54:24,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 03:54:24,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82579618] [2023-12-19 03:54:24,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82579618] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 03:54:24,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690956697] [2023-12-19 03:54:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 03:54:24,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 03:54:24,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 03:54:24,338 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 03:54:24,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 03:54:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 03:54:24,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 03:54:24,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 03:54:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 1176 proven. 796 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2023-12-19 03:54:25,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 03:54:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 1628 proven. 344 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2023-12-19 03:54:26,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690956697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 03:54:26,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 03:54:26,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-12-19 03:54:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037858281] [2023-12-19 03:54:26,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 03:54:26,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-19 03:54:26,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 03:54:26,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-19 03:54:26,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-12-19 03:54:26,434 INFO L87 Difference]: Start difference. First operand 267183 states and 274265 transitions. Second operand has 8 states, 8 states have (on average 222.125) internal successors, (1777), 7 states have internal predecessors, (1777), 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) [2023-12-19 03:54:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 03:54:36,996 INFO L93 Difference]: Finished difference Result 624264 states and 642422 transitions. [2023-12-19 03:54:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 03:54:36,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 222.125) internal successors, (1777), 7 states have internal predecessors, (1777), 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 1303 [2023-12-19 03:54:36,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 03:54:37,567 INFO L225 Difference]: With dead ends: 624264 [2023-12-19 03:54:37,568 INFO L226 Difference]: Without dead ends: 374403 [2023-12-19 03:54:37,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2608 GetRequests, 2602 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-12-19 03:54:37,685 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 4353 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 10469 mSolverCounterSat, 2774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 13243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2774 IncrementalHoareTripleChecker+Valid, 10469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-19 03:54:37,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4353 Valid, 783 Invalid, 13243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2774 Valid, 10469 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-12-19 03:54:38,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374403 states.