/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:28:30,987 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:28:31,043 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 17:28:31,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:28:31,047 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:28:31,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:28:31,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:28:31,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:28:31,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:28:31,080 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:28:31,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:28:31,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:28:31,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:28:31,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:28:31,082 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:28:31,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:28:31,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:28:31,083 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:28:31,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:28:31,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:28:31,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:28:31,084 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:28:31,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:28:31,084 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:28:31,084 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:28:31,084 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:28:31,085 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:28:31,085 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:28:31,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:28:31,085 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:28:31,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:28:31,086 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:28:31,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:28:31,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:28:31,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:28:31,087 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:28:31,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:28:31,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:28:31,087 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:28:31,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:28:31,087 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:28:31,087 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:28:31,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:28:31,088 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:28:31,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:28:31,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:28:31,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:28:31,296 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:28:31,296 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:28:31,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06.c [2023-12-20 17:28:32,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:28:32,548 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:28:32,549 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label06.c [2023-12-20 17:28:32,578 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/721f1dd02/17169877ce4a41afbb9b6de55ab728b4/FLAG0f5532d9a [2023-12-20 17:28:32,593 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/721f1dd02/17169877ce4a41afbb9b6de55ab728b4 [2023-12-20 17:28:32,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:28:32,596 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:28:32,598 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:28:32,598 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:28:32,601 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:28:32,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:28:32" (1/1) ... [2023-12-20 17:28:32,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15512868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:32, skipping insertion in model container [2023-12-20 17:28:32,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:28:32" (1/1) ... [2023-12-20 17:28:32,730 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:28:32,875 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label06.c[4782,4795] [2023-12-20 17:28:33,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:28:33,321 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:28:33,342 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label06.c[4782,4795] [2023-12-20 17:28:33,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:28:33,543 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:28:33,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33 WrapperNode [2023-12-20 17:28:33,543 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:28:33,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:28:33,545 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:28:33,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:28:33,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33" (1/1) ... [2023-12-20 17:28:33,594 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33" (1/1) ... [2023-12-20 17:28:33,738 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-20 17:28:33,738 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:28:33,739 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:28:33,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:28:33,739 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:28:33,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33" (1/1) ... [2023-12-20 17:28:33,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33" (1/1) ... [2023-12-20 17:28:33,773 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33" (1/1) ... [2023-12-20 17:28:33,925 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]. [2023-12-20 17:28:33,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33" (1/1) ... [2023-12-20 17:28:33,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33" (1/1) ... [2023-12-20 17:28:33,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33" (1/1) ... [2023-12-20 17:28:33,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33" (1/1) ... [2023-12-20 17:28:34,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33" (1/1) ... [2023-12-20 17:28:34,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33" (1/1) ... [2023-12-20 17:28:34,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:28:34,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:28:34,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:28:34,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:28:34,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33" (1/1) ... [2023-12-20 17:28:34,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:28:34,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:28:34,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 17:28:34,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 17:28:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:28:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:28:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:28:34,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:28:34,146 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:28:34,148 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:28:36,491 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:28:36,520 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:28:36,521 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:28:36,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:28:36 BoogieIcfgContainer [2023-12-20 17:28:36,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:28:36,522 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:28:36,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:28:36,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:28:36,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:28:32" (1/3) ... [2023-12-20 17:28:36,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188346c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:28:36, skipping insertion in model container [2023-12-20 17:28:36,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:28:33" (2/3) ... [2023-12-20 17:28:36,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188346c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:28:36, skipping insertion in model container [2023-12-20 17:28:36,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:28:36" (3/3) ... [2023-12-20 17:28:36,526 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label06.c [2023-12-20 17:28:36,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:28:36,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:28:36,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:28:36,599 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;@32ae732c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:28:36,599 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:28:36,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:36,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-20 17:28:36,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:36,615 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] [2023-12-20 17:28:36,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:36,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:36,619 INFO L85 PathProgramCache]: Analyzing trace with hash -484703600, now seen corresponding path program 1 times [2023-12-20 17:28:36,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:36,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489686404] [2023-12-20 17:28:36,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:36,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:36,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:36,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489686404] [2023-12-20 17:28:36,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489686404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:36,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:36,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:28:36,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799048766] [2023-12-20 17:28:36,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:36,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:28:36,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:36,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:28:36,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:28:36,784 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:36,854 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-20 17:28:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:28:36,856 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-20 17:28:36,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:36,879 INFO L225 Difference]: With dead ends: 1055 [2023-12-20 17:28:36,879 INFO L226 Difference]: Without dead ends: 526 [2023-12-20 17:28:36,883 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 [2023-12-20 17:28:36,885 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:36,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 17:28:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-20 17:28:36,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-20 17:28:36,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-20 17:28:36,950 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 30 [2023-12-20 17:28:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:36,950 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-20 17:28:36,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:36,951 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-20 17:28:36,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-20 17:28:36,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:36,951 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] [2023-12-20 17:28:36,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:28:36,952 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:36,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:36,952 INFO L85 PathProgramCache]: Analyzing trace with hash 610002122, now seen corresponding path program 1 times [2023-12-20 17:28:36,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:36,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202889044] [2023-12-20 17:28:36,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:36,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:37,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:37,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202889044] [2023-12-20 17:28:37,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202889044] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:37,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:37,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:28:37,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609092173] [2023-12-20 17:28:37,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:37,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:37,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:37,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:37,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:37,121 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:39,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:39,381 INFO L93 Difference]: Finished difference Result 1522 states and 2728 transitions. [2023-12-20 17:28:39,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:39,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-20 17:28:39,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:39,386 INFO L225 Difference]: With dead ends: 1522 [2023-12-20 17:28:39,386 INFO L226 Difference]: Without dead ends: 997 [2023-12-20 17:28:39,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:39,389 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 480 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:39,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 239 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:28:39,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-20 17:28:39,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2023-12-20 17:28:39,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.7081632653061225) internal successors, (1674), 980 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:39,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1674 transitions. [2023-12-20 17:28:39,406 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1674 transitions. Word has length 30 [2023-12-20 17:28:39,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:39,406 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1674 transitions. [2023-12-20 17:28:39,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1674 transitions. [2023-12-20 17:28:39,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 17:28:39,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:39,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:39,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:28:39,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:39,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:39,409 INFO L85 PathProgramCache]: Analyzing trace with hash 880928828, now seen corresponding path program 1 times [2023-12-20 17:28:39,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:39,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301442468] [2023-12-20 17:28:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:39,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:39,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:39,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301442468] [2023-12-20 17:28:39,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301442468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:39,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:39,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:28:39,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110817873] [2023-12-20 17:28:39,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:39,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:39,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:39,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:39,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:39,565 INFO L87 Difference]: Start difference. First operand 981 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:41,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:41,430 INFO L93 Difference]: Finished difference Result 2840 states and 4880 transitions. [2023-12-20 17:28:41,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:41,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-20 17:28:41,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:41,437 INFO L225 Difference]: With dead ends: 2840 [2023-12-20 17:28:41,437 INFO L226 Difference]: Without dead ends: 1860 [2023-12-20 17:28:41,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:41,440 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:41,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 494 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 17:28:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-12-20 17:28:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1856. [2023-12-20 17:28:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.4549865229110512) internal successors, (2699), 1855 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:41,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2699 transitions. [2023-12-20 17:28:41,468 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2699 transitions. Word has length 95 [2023-12-20 17:28:41,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:41,468 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2699 transitions. [2023-12-20 17:28:41,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2699 transitions. [2023-12-20 17:28:41,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 17:28:41,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:41,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:41,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:28:41,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:41,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:41,472 INFO L85 PathProgramCache]: Analyzing trace with hash 710160551, now seen corresponding path program 1 times [2023-12-20 17:28:41,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:41,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12074050] [2023-12-20 17:28:41,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:41,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:41,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:41,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12074050] [2023-12-20 17:28:41,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12074050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:41,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:41,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:28:41,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178616669] [2023-12-20 17:28:41,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:41,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:41,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:41,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:41,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:41,741 INFO L87 Difference]: Start difference. First operand 1856 states and 2699 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:43,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:43,832 INFO L93 Difference]: Finished difference Result 4590 states and 6639 transitions. [2023-12-20 17:28:43,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:43,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2023-12-20 17:28:43,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:43,842 INFO L225 Difference]: With dead ends: 4590 [2023-12-20 17:28:43,842 INFO L226 Difference]: Without dead ends: 2735 [2023-12-20 17:28:43,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:43,854 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:43,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 535 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:28:43,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2023-12-20 17:28:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2715. [2023-12-20 17:28:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2714 states have (on average 1.3909358879882092) internal successors, (3775), 2714 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 3775 transitions. [2023-12-20 17:28:43,890 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 3775 transitions. Word has length 135 [2023-12-20 17:28:43,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:43,891 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 3775 transitions. [2023-12-20 17:28:43,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:43,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 3775 transitions. [2023-12-20 17:28:43,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 17:28:43,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:43,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:43,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:28:43,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:43,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:43,900 INFO L85 PathProgramCache]: Analyzing trace with hash 944997302, now seen corresponding path program 1 times [2023-12-20 17:28:43,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:43,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081162476] [2023-12-20 17:28:43,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:43,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:44,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:44,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081162476] [2023-12-20 17:28:44,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081162476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:44,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:44,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:28:44,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333256562] [2023-12-20 17:28:44,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:44,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:44,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:44,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:44,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:44,071 INFO L87 Difference]: Start difference. First operand 2715 states and 3775 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:45,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:45,677 INFO L93 Difference]: Finished difference Result 6708 states and 9428 transitions. [2023-12-20 17:28:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:45,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2023-12-20 17:28:45,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:45,715 INFO L225 Difference]: With dead ends: 6708 [2023-12-20 17:28:45,715 INFO L226 Difference]: Without dead ends: 3994 [2023-12-20 17:28:45,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:45,719 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:45,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:28:45,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2023-12-20 17:28:45,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3141. [2023-12-20 17:28:45,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3140 states have (on average 1.2745222929936306) internal successors, (4002), 3140 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4002 transitions. [2023-12-20 17:28:45,761 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4002 transitions. Word has length 141 [2023-12-20 17:28:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:45,763 INFO L495 AbstractCegarLoop]: Abstraction has 3141 states and 4002 transitions. [2023-12-20 17:28:45,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4002 transitions. [2023-12-20 17:28:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-20 17:28:45,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:45,765 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:28:45,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:28:45,765 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:45,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:45,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1831495645, now seen corresponding path program 1 times [2023-12-20 17:28:45,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:45,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497037362] [2023-12-20 17:28:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:45,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:28:46,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:46,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497037362] [2023-12-20 17:28:46,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497037362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:46,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:46,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 17:28:46,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643536420] [2023-12-20 17:28:46,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:46,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:28:46,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:46,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:28:46,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:28:46,005 INFO L87 Difference]: Start difference. First operand 3141 states and 4002 transitions. Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:48,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:48,089 INFO L93 Difference]: Finished difference Result 8006 states and 10509 transitions. [2023-12-20 17:28:48,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:28:48,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2023-12-20 17:28:48,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:48,101 INFO L225 Difference]: With dead ends: 8006 [2023-12-20 17:28:48,101 INFO L226 Difference]: Without dead ends: 4866 [2023-12-20 17:28:48,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:28:48,105 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 1655 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:48,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 839 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:28:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2023-12-20 17:28:48,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 4851. [2023-12-20 17:28:48,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4850 states have (on average 1.26659793814433) internal successors, (6143), 4850 states have internal predecessors, (6143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:48,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6143 transitions. [2023-12-20 17:28:48,164 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6143 transitions. Word has length 178 [2023-12-20 17:28:48,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:48,164 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 6143 transitions. [2023-12-20 17:28:48,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 5 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6143 transitions. [2023-12-20 17:28:48,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 17:28:48,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:48,166 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:48,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:28:48,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:48,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:48,167 INFO L85 PathProgramCache]: Analyzing trace with hash -134338676, now seen corresponding path program 1 times [2023-12-20 17:28:48,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:48,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621898025] [2023-12-20 17:28:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:48,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-20 17:28:48,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:48,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621898025] [2023-12-20 17:28:48,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621898025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:48,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:48,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:28:48,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941483379] [2023-12-20 17:28:48,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:48,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:48,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:48,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:48,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:48,270 INFO L87 Difference]: Start difference. First operand 4851 states and 6143 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:50,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:50,032 INFO L93 Difference]: Finished difference Result 12248 states and 15824 transitions. [2023-12-20 17:28:50,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:50,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2023-12-20 17:28:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:50,056 INFO L225 Difference]: With dead ends: 12248 [2023-12-20 17:28:50,056 INFO L226 Difference]: Without dead ends: 7398 [2023-12-20 17:28:50,062 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 [2023-12-20 17:28:50,063 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 416 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:50,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 543 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 17:28:50,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2023-12-20 17:28:50,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 4825. [2023-12-20 17:28:50,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4824 states have (on average 1.265339966832504) internal successors, (6104), 4824 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 6104 transitions. [2023-12-20 17:28:50,172 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 6104 transitions. Word has length 184 [2023-12-20 17:28:50,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:50,173 INFO L495 AbstractCegarLoop]: Abstraction has 4825 states and 6104 transitions. [2023-12-20 17:28:50,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:50,173 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 6104 transitions. [2023-12-20 17:28:50,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-20 17:28:50,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:50,175 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:28:50,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:28:50,175 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:50,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:50,176 INFO L85 PathProgramCache]: Analyzing trace with hash -576344346, now seen corresponding path program 1 times [2023-12-20 17:28:50,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:50,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085249509] [2023-12-20 17:28:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:50,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:28:50,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:50,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085249509] [2023-12-20 17:28:50,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085249509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:50,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:50,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:28:50,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519329863] [2023-12-20 17:28:50,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:50,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:50,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:50,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:50,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:50,286 INFO L87 Difference]: Start difference. First operand 4825 states and 6104 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:52,180 INFO L93 Difference]: Finished difference Result 13480 states and 17130 transitions. [2023-12-20 17:28:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:52,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 197 [2023-12-20 17:28:52,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:52,200 INFO L225 Difference]: With dead ends: 13480 [2023-12-20 17:28:52,201 INFO L226 Difference]: Without dead ends: 8656 [2023-12-20 17:28:52,206 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 [2023-12-20 17:28:52,207 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 452 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:52,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 481 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 17:28:52,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8656 states. [2023-12-20 17:28:52,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8656 to 7377. [2023-12-20 17:28:52,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7377 states, 7376 states have (on average 1.247966377440347) internal successors, (9205), 7376 states have internal predecessors, (9205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7377 states to 7377 states and 9205 transitions. [2023-12-20 17:28:52,300 INFO L78 Accepts]: Start accepts. Automaton has 7377 states and 9205 transitions. Word has length 197 [2023-12-20 17:28:52,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:52,300 INFO L495 AbstractCegarLoop]: Abstraction has 7377 states and 9205 transitions. [2023-12-20 17:28:52,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 7377 states and 9205 transitions. [2023-12-20 17:28:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-12-20 17:28:52,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:52,303 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:28:52,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:28:52,303 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:52,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:52,303 INFO L85 PathProgramCache]: Analyzing trace with hash 750637180, now seen corresponding path program 1 times [2023-12-20 17:28:52,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:52,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44570292] [2023-12-20 17:28:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:52,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:28:52,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:52,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44570292] [2023-12-20 17:28:52,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44570292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:52,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:52,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:28:52,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690112438] [2023-12-20 17:28:52,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:52,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:52,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:52,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:52,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:52,446 INFO L87 Difference]: Start difference. First operand 7377 states and 9205 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:54,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:54,398 INFO L93 Difference]: Finished difference Result 18606 states and 23434 transitions. [2023-12-20 17:28:54,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:28:54,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 246 [2023-12-20 17:28:54,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:54,413 INFO L225 Difference]: With dead ends: 18606 [2023-12-20 17:28:54,414 INFO L226 Difference]: Without dead ends: 10378 [2023-12-20 17:28:54,421 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 [2023-12-20 17:28:54,422 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 469 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:54,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1017 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 17:28:54,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10378 states. [2023-12-20 17:28:54,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10378 to 10370. [2023-12-20 17:28:54,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10370 states, 10369 states have (on average 1.2060950911370432) internal successors, (12506), 10369 states have internal predecessors, (12506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:54,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10370 states to 10370 states and 12506 transitions. [2023-12-20 17:28:54,525 INFO L78 Accepts]: Start accepts. Automaton has 10370 states and 12506 transitions. Word has length 246 [2023-12-20 17:28:54,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:54,526 INFO L495 AbstractCegarLoop]: Abstraction has 10370 states and 12506 transitions. [2023-12-20 17:28:54,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:54,526 INFO L276 IsEmpty]: Start isEmpty. Operand 10370 states and 12506 transitions. [2023-12-20 17:28:54,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-20 17:28:54,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:54,529 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:54,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 17:28:54,529 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:54,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:54,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1836235263, now seen corresponding path program 1 times [2023-12-20 17:28:54,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:54,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918988170] [2023-12-20 17:28:54,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:54,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 196 proven. 70 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 17:28:54,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:54,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918988170] [2023-12-20 17:28:54,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918988170] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:28:54,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388068451] [2023-12-20 17:28:54,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:54,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:28:54,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:28:54,755 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:28:54,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 17:28:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:54,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:28:54,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:28:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 196 proven. 70 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 17:28:55,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:28:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 17:28:55,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388068451] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:28:55,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:28:55,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-20 17:28:55,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429150333] [2023-12-20 17:28:55,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:55,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:28:55,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:55,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:28:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:28:55,309 INFO L87 Difference]: Start difference. First operand 10370 states and 12506 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:58,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:28:58,481 INFO L93 Difference]: Finished difference Result 32690 states and 39750 transitions. [2023-12-20 17:28:58,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:28:58,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 254 [2023-12-20 17:28:58,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:28:58,510 INFO L225 Difference]: With dead ends: 32690 [2023-12-20 17:28:58,510 INFO L226 Difference]: Without dead ends: 21460 [2023-12-20 17:28:58,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-20 17:28:58,522 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1138 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 1420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1420 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:28:58,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 140 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1420 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 17:28:58,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21460 states. [2023-12-20 17:28:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21460 to 21458. [2023-12-20 17:28:58,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21458 states, 21457 states have (on average 1.1587826816423545) internal successors, (24864), 21457 states have internal predecessors, (24864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:58,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21458 states to 21458 states and 24864 transitions. [2023-12-20 17:28:58,738 INFO L78 Accepts]: Start accepts. Automaton has 21458 states and 24864 transitions. Word has length 254 [2023-12-20 17:28:58,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:28:58,738 INFO L495 AbstractCegarLoop]: Abstraction has 21458 states and 24864 transitions. [2023-12-20 17:28:58,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:28:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 21458 states and 24864 transitions. [2023-12-20 17:28:58,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-20 17:28:58,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:28:58,741 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:28:58,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 17:28:58,946 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,SelfDestructingSolverStorable9 [2023-12-20 17:28:58,948 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:28:58,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:28:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1441451129, now seen corresponding path program 1 times [2023-12-20 17:28:58,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:28:58,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718382981] [2023-12-20 17:28:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:28:58,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:28:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:28:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-20 17:28:59,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:28:59,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718382981] [2023-12-20 17:28:59,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718382981] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:28:59,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:28:59,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:28:59,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412494256] [2023-12-20 17:28:59,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:28:59,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:28:59,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:28:59,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:28:59,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:28:59,137 INFO L87 Difference]: Start difference. First operand 21458 states and 24864 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:00,678 INFO L93 Difference]: Finished difference Result 47591 states and 55278 transitions. [2023-12-20 17:29:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:00,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 267 [2023-12-20 17:29:00,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:00,710 INFO L225 Difference]: With dead ends: 47591 [2023-12-20 17:29:00,710 INFO L226 Difference]: Without dead ends: 26134 [2023-12-20 17:29:00,728 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 [2023-12-20 17:29:00,729 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 373 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:00,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 855 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:29:00,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26134 states. [2023-12-20 17:29:00,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26134 to 25709. [2023-12-20 17:29:00,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25709 states, 25708 states have (on average 1.143107203983196) internal successors, (29387), 25708 states have internal predecessors, (29387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:00,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25709 states to 25709 states and 29387 transitions. [2023-12-20 17:29:00,973 INFO L78 Accepts]: Start accepts. Automaton has 25709 states and 29387 transitions. Word has length 267 [2023-12-20 17:29:00,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:00,974 INFO L495 AbstractCegarLoop]: Abstraction has 25709 states and 29387 transitions. [2023-12-20 17:29:00,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:00,974 INFO L276 IsEmpty]: Start isEmpty. Operand 25709 states and 29387 transitions. [2023-12-20 17:29:00,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2023-12-20 17:29:00,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:00,978 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 17:29:00,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 17:29:00,978 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:00,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:00,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1520496576, now seen corresponding path program 1 times [2023-12-20 17:29:00,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:00,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848794784] [2023-12-20 17:29:00,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:00,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-20 17:29:01,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:01,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848794784] [2023-12-20 17:29:01,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848794784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:01,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:01,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:29:01,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066724359] [2023-12-20 17:29:01,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:01,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:29:01,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:01,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:29:01,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:29:01,355 INFO L87 Difference]: Start difference. First operand 25709 states and 29387 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:04,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:04,347 INFO L93 Difference]: Finished difference Result 67189 states and 77163 transitions. [2023-12-20 17:29:04,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:29:04,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 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 290 [2023-12-20 17:29:04,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:04,392 INFO L225 Difference]: With dead ends: 67189 [2023-12-20 17:29:04,392 INFO L226 Difference]: Without dead ends: 38067 [2023-12-20 17:29:04,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:29:04,416 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 867 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2805 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 2805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:04,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 344 Invalid, 3254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [449 Valid, 2805 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:29:04,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38067 states. [2023-12-20 17:29:04,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38067 to 34624. [2023-12-20 17:29:04,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34624 states, 34623 states have (on average 1.1460589781359212) internal successors, (39680), 34623 states have internal predecessors, (39680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34624 states to 34624 states and 39680 transitions. [2023-12-20 17:29:04,849 INFO L78 Accepts]: Start accepts. Automaton has 34624 states and 39680 transitions. Word has length 290 [2023-12-20 17:29:04,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:04,849 INFO L495 AbstractCegarLoop]: Abstraction has 34624 states and 39680 transitions. [2023-12-20 17:29:04,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:04,849 INFO L276 IsEmpty]: Start isEmpty. Operand 34624 states and 39680 transitions. [2023-12-20 17:29:04,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-20 17:29:04,853 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:04,853 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 17:29:04,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 17:29:04,853 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:04,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:04,854 INFO L85 PathProgramCache]: Analyzing trace with hash 9756323, now seen corresponding path program 1 times [2023-12-20 17:29:04,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:04,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566548015] [2023-12-20 17:29:04,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:04,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 17:29:05,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:05,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566548015] [2023-12-20 17:29:05,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566548015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:05,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:05,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:05,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377691396] [2023-12-20 17:29:05,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:05,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:05,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:05,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:05,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:05,010 INFO L87 Difference]: Start difference. First operand 34624 states and 39680 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:06,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:06,638 INFO L93 Difference]: Finished difference Result 83320 states and 95564 transitions. [2023-12-20 17:29:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:06,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 305 [2023-12-20 17:29:06,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:06,689 INFO L225 Difference]: With dead ends: 83320 [2023-12-20 17:29:06,690 INFO L226 Difference]: Without dead ends: 45720 [2023-12-20 17:29:06,716 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 [2023-12-20 17:29:06,716 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 362 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:06,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 799 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:29:06,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45720 states. [2023-12-20 17:29:07,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45720 to 45285. [2023-12-20 17:29:07,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45285 states, 45284 states have (on average 1.1171053793834467) internal successors, (50587), 45284 states have internal predecessors, (50587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:07,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45285 states to 45285 states and 50587 transitions. [2023-12-20 17:29:07,361 INFO L78 Accepts]: Start accepts. Automaton has 45285 states and 50587 transitions. Word has length 305 [2023-12-20 17:29:07,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:07,361 INFO L495 AbstractCegarLoop]: Abstraction has 45285 states and 50587 transitions. [2023-12-20 17:29:07,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:07,361 INFO L276 IsEmpty]: Start isEmpty. Operand 45285 states and 50587 transitions. [2023-12-20 17:29:07,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-20 17:29:07,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:07,366 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:07,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 17:29:07,366 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:07,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:07,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1750908446, now seen corresponding path program 1 times [2023-12-20 17:29:07,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:07,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420942898] [2023-12-20 17:29:07,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:07,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 295 proven. 214 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-20 17:29:07,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:07,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420942898] [2023-12-20 17:29:07,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420942898] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:29:07,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940176315] [2023-12-20 17:29:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:07,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:29:07,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:29:07,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:29:07,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 17:29:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:07,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:29:07,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:29:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 337 proven. 73 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-20 17:29:08,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:29:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-20 17:29:08,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940176315] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:29:08,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:29:08,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2023-12-20 17:29:08,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554075799] [2023-12-20 17:29:08,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:08,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:29:08,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:08,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:29:08,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:29:08,252 INFO L87 Difference]: Start difference. First operand 45285 states and 50587 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:11,057 INFO L93 Difference]: Finished difference Result 109316 states and 122119 transitions. [2023-12-20 17:29:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:29:11,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 328 [2023-12-20 17:29:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:11,129 INFO L225 Difference]: With dead ends: 109316 [2023-12-20 17:29:11,129 INFO L226 Difference]: Without dead ends: 64032 [2023-12-20 17:29:11,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:29:11,161 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 889 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:11,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 169 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 17:29:11,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64032 states. [2023-12-20 17:29:11,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64032 to 60202. [2023-12-20 17:29:11,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60202 states, 60201 states have (on average 1.1185196259198351) internal successors, (67336), 60201 states have internal predecessors, (67336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60202 states to 60202 states and 67336 transitions. [2023-12-20 17:29:11,861 INFO L78 Accepts]: Start accepts. Automaton has 60202 states and 67336 transitions. Word has length 328 [2023-12-20 17:29:11,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:11,863 INFO L495 AbstractCegarLoop]: Abstraction has 60202 states and 67336 transitions. [2023-12-20 17:29:11,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 60202 states and 67336 transitions. [2023-12-20 17:29:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-20 17:29:11,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:11,869 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-20 17:29:11,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 17:29:12,075 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,SelfDestructingSolverStorable13 [2023-12-20 17:29:12,075 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:12,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:12,076 INFO L85 PathProgramCache]: Analyzing trace with hash 257027118, now seen corresponding path program 1 times [2023-12-20 17:29:12,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:12,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897464850] [2023-12-20 17:29:12,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:12,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-20 17:29:12,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:12,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897464850] [2023-12-20 17:29:12,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897464850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:12,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:12,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:12,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101939073] [2023-12-20 17:29:12,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:12,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:12,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:12,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:12,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:12,455 INFO L87 Difference]: Start difference. First operand 60202 states and 67336 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:14,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:14,188 INFO L93 Difference]: Finished difference Result 134018 states and 150108 transitions. [2023-12-20 17:29:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:14,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 358 [2023-12-20 17:29:14,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:14,263 INFO L225 Difference]: With dead ends: 134018 [2023-12-20 17:29:14,263 INFO L226 Difference]: Without dead ends: 70838 [2023-12-20 17:29:14,287 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 [2023-12-20 17:29:14,287 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 390 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:14,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 796 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:29:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70838 states. [2023-12-20 17:29:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70838 to 59738. [2023-12-20 17:29:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59738 states, 59737 states have (on average 1.1137653380651857) internal successors, (66533), 59737 states have internal predecessors, (66533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:15,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59738 states to 59738 states and 66533 transitions. [2023-12-20 17:29:15,016 INFO L78 Accepts]: Start accepts. Automaton has 59738 states and 66533 transitions. Word has length 358 [2023-12-20 17:29:15,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:15,016 INFO L495 AbstractCegarLoop]: Abstraction has 59738 states and 66533 transitions. [2023-12-20 17:29:15,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:15,017 INFO L276 IsEmpty]: Start isEmpty. Operand 59738 states and 66533 transitions. [2023-12-20 17:29:15,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-12-20 17:29:15,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:15,171 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 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] [2023-12-20 17:29:15,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 17:29:15,171 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:15,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash -539122270, now seen corresponding path program 1 times [2023-12-20 17:29:15,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:15,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260189515] [2023-12-20 17:29:15,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:15,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-12-20 17:29:15,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:15,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260189515] [2023-12-20 17:29:15,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260189515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:15,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:15,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:15,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468510824] [2023-12-20 17:29:15,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:15,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:15,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:15,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:15,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:15,409 INFO L87 Difference]: Start difference. First operand 59738 states and 66533 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:17,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:17,154 INFO L93 Difference]: Finished difference Result 130128 states and 144807 transitions. [2023-12-20 17:29:17,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:17,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 399 [2023-12-20 17:29:17,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:17,227 INFO L225 Difference]: With dead ends: 130128 [2023-12-20 17:29:17,227 INFO L226 Difference]: Without dead ends: 69960 [2023-12-20 17:29:17,263 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 [2023-12-20 17:29:17,264 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 421 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:17,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 280 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 17:29:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69960 states. [2023-12-20 17:29:17,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69960 to 66124. [2023-12-20 17:29:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66124 states, 66123 states have (on average 1.1111262344418735) internal successors, (73471), 66123 states have internal predecessors, (73471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66124 states to 66124 states and 73471 transitions. [2023-12-20 17:29:18,098 INFO L78 Accepts]: Start accepts. Automaton has 66124 states and 73471 transitions. Word has length 399 [2023-12-20 17:29:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:18,098 INFO L495 AbstractCegarLoop]: Abstraction has 66124 states and 73471 transitions. [2023-12-20 17:29:18,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:18,098 INFO L276 IsEmpty]: Start isEmpty. Operand 66124 states and 73471 transitions. [2023-12-20 17:29:18,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-12-20 17:29:18,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:18,105 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-20 17:29:18,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 17:29:18,106 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:18,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:18,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1282978590, now seen corresponding path program 1 times [2023-12-20 17:29:18,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:18,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807204381] [2023-12-20 17:29:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:18,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 301 proven. 29 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-20 17:29:18,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807204381] [2023-12-20 17:29:18,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807204381] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:29:18,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645823406] [2023-12-20 17:29:18,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:18,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:29:18,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:29:18,804 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:29:18,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 17:29:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:18,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-20 17:29:18,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:29:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 387 proven. 82 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-20 17:29:19,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:29:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 387 proven. 82 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-20 17:29:19,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645823406] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:29:19,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:29:19,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-12-20 17:29:19,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673643112] [2023-12-20 17:29:19,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:29:19,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 17:29:19,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 17:29:19,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:29:19,792 INFO L87 Difference]: Start difference. First operand 66124 states and 73471 transitions. Second operand has 9 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:28,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:28,485 INFO L93 Difference]: Finished difference Result 183770 states and 202999 transitions. [2023-12-20 17:29:28,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 17:29:28,487 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 0 states have call successors, (0), 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 410 [2023-12-20 17:29:28,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:28,611 INFO L225 Difference]: With dead ends: 183770 [2023-12-20 17:29:28,612 INFO L226 Difference]: Without dead ends: 111258 [2023-12-20 17:29:28,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 824 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2023-12-20 17:29:28,644 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 8286 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 7916 mSolverCounterSat, 2589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8286 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 10505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2589 IncrementalHoareTripleChecker+Valid, 7916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:28,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8286 Valid, 286 Invalid, 10505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2589 Valid, 7916 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-12-20 17:29:28,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111258 states. [2023-12-20 17:29:29,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111258 to 88616. [2023-12-20 17:29:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88616 states, 88615 states have (on average 1.0832703266941264) internal successors, (95994), 88615 states have internal predecessors, (95994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88616 states to 88616 states and 95994 transitions. [2023-12-20 17:29:29,841 INFO L78 Accepts]: Start accepts. Automaton has 88616 states and 95994 transitions. Word has length 410 [2023-12-20 17:29:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:29,841 INFO L495 AbstractCegarLoop]: Abstraction has 88616 states and 95994 transitions. [2023-12-20 17:29:29,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.33333333333333) internal successors, (723), 9 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 88616 states and 95994 transitions. [2023-12-20 17:29:29,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-12-20 17:29:29,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:29,852 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-12-20 17:29:29,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 17:29:30,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:29:30,057 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:30,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:30,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1918616243, now seen corresponding path program 1 times [2023-12-20 17:29:30,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:30,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850669443] [2023-12-20 17:29:30,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:30,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-12-20 17:29:30,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:30,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850669443] [2023-12-20 17:29:30,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850669443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:30,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:30,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:30,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090275775] [2023-12-20 17:29:30,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:30,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:30,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:30,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:30,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:30,533 INFO L87 Difference]: Start difference. First operand 88616 states and 95994 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:32,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:32,126 INFO L93 Difference]: Finished difference Result 174673 states and 189213 transitions. [2023-12-20 17:29:32,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:32,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 496 [2023-12-20 17:29:32,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:32,220 INFO L225 Difference]: With dead ends: 174673 [2023-12-20 17:29:32,220 INFO L226 Difference]: Without dead ends: 86058 [2023-12-20 17:29:32,269 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 [2023-12-20 17:29:32,269 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 465 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:32,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 689 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:29:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86058 states. [2023-12-20 17:29:33,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86058 to 84781. [2023-12-20 17:29:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84781 states, 84780 states have (on average 1.0677754187308328) internal successors, (90526), 84780 states have internal predecessors, (90526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:33,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84781 states to 84781 states and 90526 transitions. [2023-12-20 17:29:33,414 INFO L78 Accepts]: Start accepts. Automaton has 84781 states and 90526 transitions. Word has length 496 [2023-12-20 17:29:33,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:33,415 INFO L495 AbstractCegarLoop]: Abstraction has 84781 states and 90526 transitions. [2023-12-20 17:29:33,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:33,415 INFO L276 IsEmpty]: Start isEmpty. Operand 84781 states and 90526 transitions. [2023-12-20 17:29:33,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2023-12-20 17:29:33,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:33,429 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:33,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 17:29:33,429 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:33,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:33,430 INFO L85 PathProgramCache]: Analyzing trace with hash 117453091, now seen corresponding path program 1 times [2023-12-20 17:29:33,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:33,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040067301] [2023-12-20 17:29:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:33,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-20 17:29:33,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:33,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040067301] [2023-12-20 17:29:33,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040067301] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:33,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:33,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:29:33,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084593877] [2023-12-20 17:29:33,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:33,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:29:33,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:33,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:29:33,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:29:33,909 INFO L87 Difference]: Start difference. First operand 84781 states and 90526 transitions. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:36,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:36,643 INFO L93 Difference]: Finished difference Result 192122 states and 204654 transitions. [2023-12-20 17:29:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:29:36,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 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 570 [2023-12-20 17:29:36,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:36,780 INFO L225 Difference]: With dead ends: 192122 [2023-12-20 17:29:36,780 INFO L226 Difference]: Without dead ends: 107342 [2023-12-20 17:29:36,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:29:36,819 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 738 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:36,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 171 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:29:36,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107342 states. [2023-12-20 17:29:37,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107342 to 99684. [2023-12-20 17:29:38,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99684 states, 99683 states have (on average 1.0630498680818194) internal successors, (105968), 99683 states have internal predecessors, (105968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:38,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99684 states to 99684 states and 105968 transitions. [2023-12-20 17:29:38,166 INFO L78 Accepts]: Start accepts. Automaton has 99684 states and 105968 transitions. Word has length 570 [2023-12-20 17:29:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:38,166 INFO L495 AbstractCegarLoop]: Abstraction has 99684 states and 105968 transitions. [2023-12-20 17:29:38,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 99684 states and 105968 transitions. [2023-12-20 17:29:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2023-12-20 17:29:38,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:38,189 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:38,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 17:29:38,190 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:38,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:38,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2026224423, now seen corresponding path program 1 times [2023-12-20 17:29:38,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:38,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416573531] [2023-12-20 17:29:38,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:38,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:39,151 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 422 proven. 72 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-20 17:29:39,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:39,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416573531] [2023-12-20 17:29:39,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416573531] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:29:39,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83737128] [2023-12-20 17:29:39,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:39,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:29:39,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:29:39,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:29:39,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 17:29:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:39,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 17:29:39,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:29:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 301 proven. 29 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:29:39,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:29:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:29:39,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83737128] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 17:29:39,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 17:29:39,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2023-12-20 17:29:39,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764246957] [2023-12-20 17:29:39,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:39,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:29:39,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:39,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:29:39,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:29:39,706 INFO L87 Difference]: Start difference. First operand 99684 states and 105968 transitions. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:42,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:42,561 INFO L93 Difference]: Finished difference Result 215551 states and 229226 transitions. [2023-12-20 17:29:42,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:29:42,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 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 597 [2023-12-20 17:29:42,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:42,709 INFO L225 Difference]: With dead ends: 215551 [2023-12-20 17:29:42,710 INFO L226 Difference]: Without dead ends: 115443 [2023-12-20 17:29:42,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1197 GetRequests, 1190 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-20 17:29:42,752 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 882 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:42,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 156 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:29:42,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115443 states. [2023-12-20 17:29:43,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115443 to 110751. [2023-12-20 17:29:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110751 states, 110750 states have (on average 1.0643792325056434) internal successors, (117880), 110750 states have internal predecessors, (117880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110751 states to 110751 states and 117880 transitions. [2023-12-20 17:29:44,309 INFO L78 Accepts]: Start accepts. Automaton has 110751 states and 117880 transitions. Word has length 597 [2023-12-20 17:29:44,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:44,310 INFO L495 AbstractCegarLoop]: Abstraction has 110751 states and 117880 transitions. [2023-12-20 17:29:44,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:44,310 INFO L276 IsEmpty]: Start isEmpty. Operand 110751 states and 117880 transitions. [2023-12-20 17:29:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2023-12-20 17:29:44,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:44,331 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:29:44,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 17:29:44,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:29:44,532 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:44,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:44,532 INFO L85 PathProgramCache]: Analyzing trace with hash -199451521, now seen corresponding path program 1 times [2023-12-20 17:29:44,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:44,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605033042] [2023-12-20 17:29:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:44,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-12-20 17:29:44,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:44,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605033042] [2023-12-20 17:29:44,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605033042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:44,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:44,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:29:44,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384535402] [2023-12-20 17:29:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:44,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:44,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:44,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:44,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:29:44,732 INFO L87 Difference]: Start difference. First operand 110751 states and 117880 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:46,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:46,762 INFO L93 Difference]: Finished difference Result 221506 states and 235759 transitions. [2023-12-20 17:29:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:46,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 [2023-12-20 17:29:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:46,935 INFO L225 Difference]: With dead ends: 221506 [2023-12-20 17:29:46,935 INFO L226 Difference]: Without dead ends: 111181 [2023-12-20 17:29:46,989 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 [2023-12-20 17:29:46,989 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 491 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:46,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 660 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:29:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111181 states. [2023-12-20 17:29:48,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111181 to 109051. [2023-12-20 17:29:48,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109051 states, 109050 states have (on average 1.0607427785419532) internal successors, (115674), 109050 states have internal predecessors, (115674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109051 states to 109051 states and 115674 transitions. [2023-12-20 17:29:48,401 INFO L78 Accepts]: Start accepts. Automaton has 109051 states and 115674 transitions. Word has length 616 [2023-12-20 17:29:48,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:48,402 INFO L495 AbstractCegarLoop]: Abstraction has 109051 states and 115674 transitions. [2023-12-20 17:29:48,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:48,402 INFO L276 IsEmpty]: Start isEmpty. Operand 109051 states and 115674 transitions. [2023-12-20 17:29:48,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2023-12-20 17:29:48,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:48,433 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:29:48,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:29:48,433 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:48,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:48,433 INFO L85 PathProgramCache]: Analyzing trace with hash 62676241, now seen corresponding path program 1 times [2023-12-20 17:29:48,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:48,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198341859] [2023-12-20 17:29:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:48,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 489 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:29:49,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:49,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198341859] [2023-12-20 17:29:49,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198341859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:49,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:29:49,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:29:49,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673249574] [2023-12-20 17:29:49,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:49,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:29:49,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:49,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:29:49,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:29:49,191 INFO L87 Difference]: Start difference. First operand 109051 states and 115674 transitions. Second operand has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:52,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:52,258 INFO L93 Difference]: Finished difference Result 245807 states and 260383 transitions. [2023-12-20 17:29:52,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:29:52,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 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 735 [2023-12-20 17:29:52,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:52,458 INFO L225 Difference]: With dead ends: 245807 [2023-12-20 17:29:52,458 INFO L226 Difference]: Without dead ends: 135903 [2023-12-20 17:29:52,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:29:52,520 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 741 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:52,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 150 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:29:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135903 states. [2023-12-20 17:29:53,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135903 to 120969. [2023-12-20 17:29:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120969 states, 120968 states have (on average 1.0606110706963825) internal successors, (128300), 120968 states have internal predecessors, (128300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:54,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120969 states to 120969 states and 128300 transitions. [2023-12-20 17:29:54,106 INFO L78 Accepts]: Start accepts. Automaton has 120969 states and 128300 transitions. Word has length 735 [2023-12-20 17:29:54,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:54,107 INFO L495 AbstractCegarLoop]: Abstraction has 120969 states and 128300 transitions. [2023-12-20 17:29:54,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:54,107 INFO L276 IsEmpty]: Start isEmpty. Operand 120969 states and 128300 transitions. [2023-12-20 17:29:54,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-20 17:29:54,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:54,364 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:54,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:29:54,364 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:54,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1106266181, now seen corresponding path program 1 times [2023-12-20 17:29:54,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:54,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084059690] [2023-12-20 17:29:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:54,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 789 proven. 80 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-20 17:29:55,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:29:55,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084059690] [2023-12-20 17:29:55,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084059690] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:29:55,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178624468] [2023-12-20 17:29:55,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:55,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:29:55,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:29:55,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:29:55,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 17:29:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:29:55,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:29:55,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:29:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2023-12-20 17:29:55,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:29:55,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178624468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:29:55,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:29:55,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 17:29:55,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138718638] [2023-12-20 17:29:55,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:29:55,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:29:55,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:29:55,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:29:55,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:29:55,663 INFO L87 Difference]: Start difference. First operand 120969 states and 128300 transitions. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:57,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:29:57,545 INFO L93 Difference]: Finished difference Result 246205 states and 261032 transitions. [2023-12-20 17:29:57,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:29:57,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 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 769 [2023-12-20 17:29:57,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:29:57,695 INFO L225 Difference]: With dead ends: 246205 [2023-12-20 17:29:57,695 INFO L226 Difference]: Without dead ends: 125662 [2023-12-20 17:29:57,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:29:57,744 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 439 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:29:57,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 346 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 17:29:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125662 states. [2023-12-20 17:29:59,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125662 to 123957. [2023-12-20 17:29:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123957 states, 123956 states have (on average 1.0564716512310819) internal successors, (130956), 123956 states have internal predecessors, (130956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:59,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123957 states to 123957 states and 130956 transitions. [2023-12-20 17:29:59,271 INFO L78 Accepts]: Start accepts. Automaton has 123957 states and 130956 transitions. Word has length 769 [2023-12-20 17:29:59,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:29:59,271 INFO L495 AbstractCegarLoop]: Abstraction has 123957 states and 130956 transitions. [2023-12-20 17:29:59,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:29:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 123957 states and 130956 transitions. [2023-12-20 17:29:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-12-20 17:29:59,298 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:29:59,298 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:29:59,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 17:29:59,499 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,SelfDestructingSolverStorable22 [2023-12-20 17:29:59,499 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:29:59,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:29:59,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1394843033, now seen corresponding path program 1 times [2023-12-20 17:29:59,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:29:59,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961444353] [2023-12-20 17:29:59,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:29:59,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:29:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:00,415 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 439 proven. 29 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-20 17:30:00,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:00,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961444353] [2023-12-20 17:30:00,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961444353] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:30:00,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907169111] [2023-12-20 17:30:00,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:00,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:00,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:30:00,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:30:00,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 17:30:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:00,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:30:00,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:30:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2023-12-20 17:30:00,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:30:00,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907169111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:00,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:30:00,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-20 17:30:00,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243605648] [2023-12-20 17:30:00,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:00,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:00,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:00,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:00,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:30:00,683 INFO L87 Difference]: Start difference. First operand 123957 states and 130956 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:02,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:02,719 INFO L93 Difference]: Finished difference Result 256869 states and 271521 transitions. [2023-12-20 17:30:02,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:02,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 786 [2023-12-20 17:30:02,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:02,887 INFO L225 Difference]: With dead ends: 256869 [2023-12-20 17:30:02,887 INFO L226 Difference]: Without dead ends: 132912 [2023-12-20 17:30:02,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 786 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:30:02,941 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 471 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:02,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 243 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:30:03,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132912 states. [2023-12-20 17:30:04,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132912 to 127369. [2023-12-20 17:30:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127369 states, 127368 states have (on average 1.0560501852898687) internal successors, (134507), 127368 states have internal predecessors, (134507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:04,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127369 states to 127369 states and 134507 transitions. [2023-12-20 17:30:04,669 INFO L78 Accepts]: Start accepts. Automaton has 127369 states and 134507 transitions. Word has length 786 [2023-12-20 17:30:04,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:04,670 INFO L495 AbstractCegarLoop]: Abstraction has 127369 states and 134507 transitions. [2023-12-20 17:30:04,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:04,670 INFO L276 IsEmpty]: Start isEmpty. Operand 127369 states and 134507 transitions. [2023-12-20 17:30:04,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2023-12-20 17:30:04,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:04,719 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, 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, 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, 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] [2023-12-20 17:30:04,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 17:30:04,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:04,925 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:04,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:04,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1067204171, now seen corresponding path program 1 times [2023-12-20 17:30:04,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:04,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341786034] [2023-12-20 17:30:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:04,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 1058 proven. 80 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2023-12-20 17:30:06,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:06,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341786034] [2023-12-20 17:30:06,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341786034] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:30:06,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922121002] [2023-12-20 17:30:06,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:06,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:06,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:30:06,181 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:30:06,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 17:30:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:06,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:30:06,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:30:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 1187 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2023-12-20 17:30:06,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:30:06,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922121002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:06,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:30:06,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-20 17:30:06,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255427001] [2023-12-20 17:30:06,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:06,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:06,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:06,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:06,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:30:06,910 INFO L87 Difference]: Start difference. First operand 127369 states and 134507 transitions. Second operand has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:08,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:08,121 INFO L93 Difference]: Finished difference Result 237273 states and 250687 transitions. [2023-12-20 17:30:08,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:08,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 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 920 [2023-12-20 17:30:08,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:08,260 INFO L225 Difference]: With dead ends: 237273 [2023-12-20 17:30:08,260 INFO L226 Difference]: Without dead ends: 110328 [2023-12-20 17:30:08,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:30:08,325 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 392 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:08,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 87 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 17:30:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110328 states. [2023-12-20 17:30:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110328 to 102227. [2023-12-20 17:30:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102227 states, 102226 states have (on average 1.058370668910062) internal successors, (108193), 102226 states have internal predecessors, (108193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102227 states to 102227 states and 108193 transitions. [2023-12-20 17:30:09,713 INFO L78 Accepts]: Start accepts. Automaton has 102227 states and 108193 transitions. Word has length 920 [2023-12-20 17:30:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:09,714 INFO L495 AbstractCegarLoop]: Abstraction has 102227 states and 108193 transitions. [2023-12-20 17:30:09,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 102227 states and 108193 transitions. [2023-12-20 17:30:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2023-12-20 17:30:09,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:09,771 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:09,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 17:30:09,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:09,977 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:09,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1905690094, now seen corresponding path program 1 times [2023-12-20 17:30:09,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:09,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799454883] [2023-12-20 17:30:09,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:09,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 1193 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2023-12-20 17:30:10,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:10,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799454883] [2023-12-20 17:30:10,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799454883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:10,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:10,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:30:10,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862519470] [2023-12-20 17:30:10,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:10,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:10,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:10,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:10,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:30:10,795 INFO L87 Difference]: Start difference. First operand 102227 states and 108193 transitions. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:12,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:12,682 INFO L93 Difference]: Finished difference Result 209980 states and 222208 transitions. [2023-12-20 17:30:12,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:12,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 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 1053 [2023-12-20 17:30:12,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:12,816 INFO L225 Difference]: With dead ends: 209980 [2023-12-20 17:30:12,816 INFO L226 Difference]: Without dead ends: 107754 [2023-12-20 17:30:12,857 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 [2023-12-20 17:30:12,857 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 291 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:12,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 318 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:30:12,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107754 states. [2023-12-20 17:30:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107754 to 102650. [2023-12-20 17:30:14,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102650 states, 102649 states have (on average 1.0562694229851242) internal successors, (108425), 102649 states have internal predecessors, (108425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:14,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102650 states to 102650 states and 108425 transitions. [2023-12-20 17:30:14,117 INFO L78 Accepts]: Start accepts. Automaton has 102650 states and 108425 transitions. Word has length 1053 [2023-12-20 17:30:14,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:14,117 INFO L495 AbstractCegarLoop]: Abstraction has 102650 states and 108425 transitions. [2023-12-20 17:30:14,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 102650 states and 108425 transitions. [2023-12-20 17:30:14,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1112 [2023-12-20 17:30:14,183 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:14,183 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:30:14,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 17:30:14,184 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:14,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:14,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1889469597, now seen corresponding path program 1 times [2023-12-20 17:30:14,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:14,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584288059] [2023-12-20 17:30:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:14,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1853 backedges. 1595 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-12-20 17:30:15,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:15,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584288059] [2023-12-20 17:30:15,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584288059] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:15,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:15,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:30:15,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790211160] [2023-12-20 17:30:15,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:15,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:30:15,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:15,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:30:15,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:30:15,081 INFO L87 Difference]: Start difference. First operand 102650 states and 108425 transitions. Second operand has 4 states, 4 states have (on average 232.25) internal successors, (929), 4 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:17,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:17,701 INFO L93 Difference]: Finished difference Result 217207 states and 229123 transitions. [2023-12-20 17:30:17,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:30:17,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 232.25) internal successors, (929), 4 states have internal predecessors, (929), 0 states have call successors, (0), 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 1111 [2023-12-20 17:30:17,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:17,846 INFO L225 Difference]: With dead ends: 217207 [2023-12-20 17:30:17,846 INFO L226 Difference]: Without dead ends: 114558 [2023-12-20 17:30:17,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:30:17,900 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 325 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 2611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:17,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 191 Invalid, 2611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 17:30:17,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114558 states. [2023-12-20 17:30:19,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114558 to 101798. [2023-12-20 17:30:19,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101798 states, 101797 states have (on average 1.0562688487872924) internal successors, (107525), 101797 states have internal predecessors, (107525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101798 states to 101798 states and 107525 transitions. [2023-12-20 17:30:19,315 INFO L78 Accepts]: Start accepts. Automaton has 101798 states and 107525 transitions. Word has length 1111 [2023-12-20 17:30:19,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:19,315 INFO L495 AbstractCegarLoop]: Abstraction has 101798 states and 107525 transitions. [2023-12-20 17:30:19,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 232.25) internal successors, (929), 4 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:19,316 INFO L276 IsEmpty]: Start isEmpty. Operand 101798 states and 107525 transitions. [2023-12-20 17:30:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2023-12-20 17:30:19,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:19,384 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:30:19,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 17:30:19,384 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:19,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:19,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1107505659, now seen corresponding path program 1 times [2023-12-20 17:30:19,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:19,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86665189] [2023-12-20 17:30:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:19,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1945 backedges. 1168 proven. 0 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2023-12-20 17:30:20,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:20,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86665189] [2023-12-20 17:30:20,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86665189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:20,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:20,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:30:20,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696875018] [2023-12-20 17:30:20,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:20,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:20,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:20,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:20,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:30:20,293 INFO L87 Difference]: Start difference. First operand 101798 states and 107525 transitions. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:22,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:22,192 INFO L93 Difference]: Finished difference Result 210423 states and 222225 transitions. [2023-12-20 17:30:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:22,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 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 1139 [2023-12-20 17:30:22,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:22,321 INFO L225 Difference]: With dead ends: 210423 [2023-12-20 17:30:22,322 INFO L226 Difference]: Without dead ends: 108626 [2023-12-20 17:30:22,369 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 [2023-12-20 17:30:22,369 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 413 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:22,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 236 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 17:30:22,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108626 states. [2023-12-20 17:30:23,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108626 to 105625. [2023-12-20 17:30:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105625 states, 105624 states have (on average 1.0552715291979096) internal successors, (111462), 105624 states have internal predecessors, (111462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:23,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105625 states to 105625 states and 111462 transitions. [2023-12-20 17:30:23,702 INFO L78 Accepts]: Start accepts. Automaton has 105625 states and 111462 transitions. Word has length 1139 [2023-12-20 17:30:23,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:23,703 INFO L495 AbstractCegarLoop]: Abstraction has 105625 states and 111462 transitions. [2023-12-20 17:30:23,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:23,703 INFO L276 IsEmpty]: Start isEmpty. Operand 105625 states and 111462 transitions. [2023-12-20 17:30:23,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1204 [2023-12-20 17:30:23,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:23,772 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:23,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 17:30:23,773 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:23,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:23,773 INFO L85 PathProgramCache]: Analyzing trace with hash -763344439, now seen corresponding path program 1 times [2023-12-20 17:30:23,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:23,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873361972] [2023-12-20 17:30:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:23,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2197 backedges. 1863 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2023-12-20 17:30:24,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:24,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873361972] [2023-12-20 17:30:24,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873361972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:24,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:24,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 17:30:24,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707305693] [2023-12-20 17:30:24,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:24,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 17:30:24,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:24,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 17:30:24,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:30:24,746 INFO L87 Difference]: Start difference. First operand 105625 states and 111462 transitions. Second operand has 5 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:27,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:27,588 INFO L93 Difference]: Finished difference Result 215473 states and 227477 transitions. [2023-12-20 17:30:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:30:27,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 0 states have call successors, (0), 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 1203 [2023-12-20 17:30:27,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:27,715 INFO L225 Difference]: With dead ends: 215473 [2023-12-20 17:30:27,716 INFO L226 Difference]: Without dead ends: 109849 [2023-12-20 17:30:27,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:30:27,772 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 924 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 3155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:27,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 123 Invalid, 3155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:30:27,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109849 states. [2023-12-20 17:30:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109849 to 90684. [2023-12-20 17:30:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90684 states, 90683 states have (on average 1.0497998522325023) internal successors, (95199), 90683 states have internal predecessors, (95199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:29,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90684 states to 90684 states and 95199 transitions. [2023-12-20 17:30:29,004 INFO L78 Accepts]: Start accepts. Automaton has 90684 states and 95199 transitions. Word has length 1203 [2023-12-20 17:30:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:29,004 INFO L495 AbstractCegarLoop]: Abstraction has 90684 states and 95199 transitions. [2023-12-20 17:30:29,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 190.8) internal successors, (954), 5 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:29,005 INFO L276 IsEmpty]: Start isEmpty. Operand 90684 states and 95199 transitions. [2023-12-20 17:30:29,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1209 [2023-12-20 17:30:29,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:29,070 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:30:29,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 17:30:29,071 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:29,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:29,071 INFO L85 PathProgramCache]: Analyzing trace with hash 641140345, now seen corresponding path program 1 times [2023-12-20 17:30:29,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:29,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628953016] [2023-12-20 17:30:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:29,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2474 backedges. 1603 proven. 187 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-12-20 17:30:30,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:30,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628953016] [2023-12-20 17:30:30,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628953016] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:30:30,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932022232] [2023-12-20 17:30:30,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:30,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:30,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:30:30,388 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:30:30,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 17:30:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:30,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:30:30,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:30:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2474 backedges. 1407 proven. 0 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2023-12-20 17:30:31,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:30:31,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932022232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:31,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:30:31,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-12-20 17:30:31,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204022117] [2023-12-20 17:30:31,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:31,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:30:31,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:31,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:30:31,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:30:31,023 INFO L87 Difference]: Start difference. First operand 90684 states and 95199 transitions. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:32,929 INFO L93 Difference]: Finished difference Result 185192 states and 194334 transitions. [2023-12-20 17:30:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:30:32,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 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 1208 [2023-12-20 17:30:32,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:33,020 INFO L225 Difference]: With dead ends: 185192 [2023-12-20 17:30:33,020 INFO L226 Difference]: Without dead ends: 94509 [2023-12-20 17:30:33,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 1207 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:30:33,071 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 791 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2034 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:33,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 195 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2034 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:30:33,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94509 states. [2023-12-20 17:30:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94509 to 92384. [2023-12-20 17:30:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92384 states, 92383 states have (on average 1.0489916976067026) internal successors, (96909), 92383 states have internal predecessors, (96909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92384 states to 92384 states and 96909 transitions. [2023-12-20 17:30:34,195 INFO L78 Accepts]: Start accepts. Automaton has 92384 states and 96909 transitions. Word has length 1208 [2023-12-20 17:30:34,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:34,195 INFO L495 AbstractCegarLoop]: Abstraction has 92384 states and 96909 transitions. [2023-12-20 17:30:34,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:34,195 INFO L276 IsEmpty]: Start isEmpty. Operand 92384 states and 96909 transitions. [2023-12-20 17:30:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1261 [2023-12-20 17:30:34,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:34,262 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:30:34,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 17:30:34,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:34,464 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:34,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:34,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1042848322, now seen corresponding path program 1 times [2023-12-20 17:30:34,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:34,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620258089] [2023-12-20 17:30:34,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:34,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2632 backedges. 923 proven. 0 refuted. 0 times theorem prover too weak. 1709 trivial. 0 not checked. [2023-12-20 17:30:35,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:35,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620258089] [2023-12-20 17:30:35,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620258089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:35,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:35,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:30:35,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332128624] [2023-12-20 17:30:35,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:35,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:30:35,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:35,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:30:35,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:30:35,529 INFO L87 Difference]: Start difference. First operand 92384 states and 96909 transitions. Second operand has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:38,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:38,058 INFO L93 Difference]: Finished difference Result 197537 states and 207388 transitions. [2023-12-20 17:30:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:30:38,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 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 1260 [2023-12-20 17:30:38,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:38,175 INFO L225 Difference]: With dead ends: 197537 [2023-12-20 17:30:38,175 INFO L226 Difference]: Without dead ends: 105154 [2023-12-20 17:30:38,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:30:38,213 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 755 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 3070 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 3070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:38,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 690 Invalid, 3300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 3070 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 17:30:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105154 states. [2023-12-20 17:30:39,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105154 to 102590. [2023-12-20 17:30:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102590 states, 102589 states have (on average 1.0482117965863786) internal successors, (107535), 102589 states have internal predecessors, (107535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102590 states to 102590 states and 107535 transitions. [2023-12-20 17:30:39,546 INFO L78 Accepts]: Start accepts. Automaton has 102590 states and 107535 transitions. Word has length 1260 [2023-12-20 17:30:39,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:39,547 INFO L495 AbstractCegarLoop]: Abstraction has 102590 states and 107535 transitions. [2023-12-20 17:30:39,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 102590 states and 107535 transitions. [2023-12-20 17:30:39,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1703 [2023-12-20 17:30:39,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:39,632 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 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, 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, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:39,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 17:30:39,633 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:39,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:39,633 INFO L85 PathProgramCache]: Analyzing trace with hash 703987378, now seen corresponding path program 1 times [2023-12-20 17:30:39,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:39,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271269148] [2023-12-20 17:30:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:39,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4862 backedges. 2096 proven. 0 refuted. 0 times theorem prover too weak. 2766 trivial. 0 not checked. [2023-12-20 17:30:41,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:41,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271269148] [2023-12-20 17:30:41,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271269148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:41,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:41,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:30:41,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820575478] [2023-12-20 17:30:41,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:41,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:30:41,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:41,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:30:41,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:30:41,121 INFO L87 Difference]: Start difference. First operand 102590 states and 107535 transitions. Second operand has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:43,825 INFO L93 Difference]: Finished difference Result 208572 states and 218690 transitions. [2023-12-20 17:30:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 17:30:43,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 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 1702 [2023-12-20 17:30:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:43,936 INFO L225 Difference]: With dead ends: 208572 [2023-12-20 17:30:43,936 INFO L226 Difference]: Without dead ends: 105983 [2023-12-20 17:30:43,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 17:30:43,982 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 745 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 3111 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 3283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:43,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 237 Invalid, 3283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 3111 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:30:44,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105983 states. [2023-12-20 17:30:45,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105983 to 98755. [2023-12-20 17:30:45,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98755 states, 98754 states have (on average 1.0476638920955101) internal successors, (103461), 98754 states have internal predecessors, (103461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:45,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98755 states to 98755 states and 103461 transitions. [2023-12-20 17:30:45,245 INFO L78 Accepts]: Start accepts. Automaton has 98755 states and 103461 transitions. Word has length 1702 [2023-12-20 17:30:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:45,245 INFO L495 AbstractCegarLoop]: Abstraction has 98755 states and 103461 transitions. [2023-12-20 17:30:45,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 98755 states and 103461 transitions. [2023-12-20 17:30:45,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2023-12-20 17:30:45,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:45,331 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:30:45,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 17:30:45,331 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:45,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:45,332 INFO L85 PathProgramCache]: Analyzing trace with hash 593925360, now seen corresponding path program 1 times [2023-12-20 17:30:45,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:45,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97265138] [2023-12-20 17:30:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:45,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4729 backedges. 1934 proven. 0 refuted. 0 times theorem prover too weak. 2795 trivial. 0 not checked. [2023-12-20 17:30:46,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:46,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97265138] [2023-12-20 17:30:46,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97265138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:30:46,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:30:46,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:30:46,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328297575] [2023-12-20 17:30:46,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:30:46,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:30:46,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:46,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:30:46,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:30:46,750 INFO L87 Difference]: Start difference. First operand 98755 states and 103461 transitions. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:48,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:30:48,288 INFO L93 Difference]: Finished difference Result 198798 states and 208415 transitions. [2023-12-20 17:30:48,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:30:48,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1705 [2023-12-20 17:30:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:30:48,393 INFO L225 Difference]: With dead ends: 198798 [2023-12-20 17:30:48,393 INFO L226 Difference]: Without dead ends: 100469 [2023-12-20 17:30:48,425 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 [2023-12-20 17:30:48,425 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 313 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:30:48,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 160 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:30:48,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100469 states. [2023-12-20 17:30:49,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100469 to 94504. [2023-12-20 17:30:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94504 states, 94503 states have (on average 1.0477656793964212) internal successors, (99017), 94503 states have internal predecessors, (99017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94504 states to 94504 states and 99017 transitions. [2023-12-20 17:30:49,504 INFO L78 Accepts]: Start accepts. Automaton has 94504 states and 99017 transitions. Word has length 1705 [2023-12-20 17:30:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:30:49,505 INFO L495 AbstractCegarLoop]: Abstraction has 94504 states and 99017 transitions. [2023-12-20 17:30:49,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:30:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 94504 states and 99017 transitions. [2023-12-20 17:30:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1739 [2023-12-20 17:30:49,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:30:49,589 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2023-12-20 17:30:49,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-20 17:30:49,590 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:30:49,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:30:49,590 INFO L85 PathProgramCache]: Analyzing trace with hash -707132955, now seen corresponding path program 1 times [2023-12-20 17:30:49,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:30:49,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685440876] [2023-12-20 17:30:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:49,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:30:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4886 backedges. 2936 proven. 984 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2023-12-20 17:30:53,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:30:53,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685440876] [2023-12-20 17:30:53,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685440876] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:30:53,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886675272] [2023-12-20 17:30:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:30:53,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:30:53,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:30:53,009 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:30:53,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 17:30:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:30:53,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:30:53,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:30:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4886 backedges. 989 proven. 29 refuted. 0 times theorem prover too weak. 3868 trivial. 0 not checked. [2023-12-20 17:30:53,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:30:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4886 backedges. 989 proven. 29 refuted. 0 times theorem prover too weak. 3868 trivial. 0 not checked. [2023-12-20 17:30:54,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886675272] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:30:54,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:30:54,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 12 [2023-12-20 17:30:54,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738873813] [2023-12-20 17:30:54,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:30:54,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 17:30:54,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:30:54,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 17:30:54,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-20 17:30:54,073 INFO L87 Difference]: Start difference. First operand 94504 states and 99017 transitions. Second operand has 12 states, 12 states have (on average 133.08333333333334) internal successors, (1597), 12 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:09,093 INFO L93 Difference]: Finished difference Result 234143 states and 244680 transitions. [2023-12-20 17:31:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 17:31:09,093 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 133.08333333333334) internal successors, (1597), 12 states have internal predecessors, (1597), 0 states have call successors, (0), 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 1738 [2023-12-20 17:31:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:09,248 INFO L225 Difference]: With dead ends: 234143 [2023-12-20 17:31:09,249 INFO L226 Difference]: Without dead ends: 138788 [2023-12-20 17:31:09,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3506 GetRequests, 3484 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2023-12-20 17:31:09,295 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 9761 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 19312 mSolverCounterSat, 1938 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9761 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 21250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1938 IncrementalHoareTripleChecker+Valid, 19312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:09,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9761 Valid, 350 Invalid, 21250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1938 Valid, 19312 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2023-12-20 17:31:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138788 states. [2023-12-20 17:31:10,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138788 to 97888. [2023-12-20 17:31:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97888 states, 97887 states have (on average 1.03073952618836) internal successors, (100896), 97887 states have internal predecessors, (100896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:10,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97888 states to 97888 states and 100896 transitions. [2023-12-20 17:31:10,429 INFO L78 Accepts]: Start accepts. Automaton has 97888 states and 100896 transitions. Word has length 1738 [2023-12-20 17:31:10,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:10,429 INFO L495 AbstractCegarLoop]: Abstraction has 97888 states and 100896 transitions. [2023-12-20 17:31:10,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 133.08333333333334) internal successors, (1597), 12 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:10,430 INFO L276 IsEmpty]: Start isEmpty. Operand 97888 states and 100896 transitions. [2023-12-20 17:31:10,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2105 [2023-12-20 17:31:10,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:10,911 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:31:10,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 17:31:11,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:31:11,118 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:11,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:11,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1029313772, now seen corresponding path program 1 times [2023-12-20 17:31:11,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:11,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658002732] [2023-12-20 17:31:11,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:11,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6681 backedges. 4407 proven. 0 refuted. 0 times theorem prover too weak. 2274 trivial. 0 not checked. [2023-12-20 17:31:12,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:12,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658002732] [2023-12-20 17:31:12,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658002732] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:31:12,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:31:12,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:31:12,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248427678] [2023-12-20 17:31:12,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:12,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:31:12,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:12,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:31:12,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:31:12,805 INFO L87 Difference]: Start difference. First operand 97888 states and 100896 transitions. Second operand has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:14,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:14,202 INFO L93 Difference]: Finished difference Result 194929 states and 200902 transitions. [2023-12-20 17:31:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:31:14,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 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 2104 [2023-12-20 17:31:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:14,310 INFO L225 Difference]: With dead ends: 194929 [2023-12-20 17:31:14,310 INFO L226 Difference]: Without dead ends: 97042 [2023-12-20 17:31:14,490 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 [2023-12-20 17:31:14,490 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 125 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:14,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 670 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 17:31:14,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97042 states. [2023-12-20 17:31:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97042 to 95340. [2023-12-20 17:31:15,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95340 states, 95339 states have (on average 1.0298828391319397) internal successors, (98188), 95339 states have internal predecessors, (98188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:15,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95340 states to 95340 states and 98188 transitions. [2023-12-20 17:31:15,495 INFO L78 Accepts]: Start accepts. Automaton has 95340 states and 98188 transitions. Word has length 2104 [2023-12-20 17:31:15,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:15,496 INFO L495 AbstractCegarLoop]: Abstraction has 95340 states and 98188 transitions. [2023-12-20 17:31:15,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 95340 states and 98188 transitions. [2023-12-20 17:31:15,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2307 [2023-12-20 17:31:15,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:15,591 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 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, 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, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-12-20 17:31:15,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 17:31:15,591 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:15,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:15,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1572176524, now seen corresponding path program 1 times [2023-12-20 17:31:15,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:15,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294658257] [2023-12-20 17:31:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:15,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6888 backedges. 5150 proven. 0 refuted. 0 times theorem prover too weak. 1738 trivial. 0 not checked. [2023-12-20 17:31:17,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:17,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294658257] [2023-12-20 17:31:17,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294658257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:31:17,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:31:17,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:31:17,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085688380] [2023-12-20 17:31:17,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:17,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:31:17,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:17,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:31:17,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:31:17,545 INFO L87 Difference]: Start difference. First operand 95340 states and 98188 transitions. Second operand has 4 states, 4 states have (on average 291.75) internal successors, (1167), 4 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:19,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:19,952 INFO L93 Difference]: Finished difference Result 215797 states and 222211 transitions. [2023-12-20 17:31:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:31:19,952 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 291.75) internal successors, (1167), 4 states have internal predecessors, (1167), 0 states have call successors, (0), 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 2306 [2023-12-20 17:31:19,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:20,114 INFO L225 Difference]: With dead ends: 215797 [2023-12-20 17:31:20,114 INFO L226 Difference]: Without dead ends: 120458 [2023-12-20 17:31:20,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:31:20,177 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 525 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 2078 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:20,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 115 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2078 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 17:31:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120458 states. [2023-12-20 17:31:21,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120458 to 108110. [2023-12-20 17:31:21,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108110 states, 108109 states have (on average 1.029479506794069) internal successors, (111296), 108109 states have internal predecessors, (111296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108110 states to 108110 states and 111296 transitions. [2023-12-20 17:31:21,586 INFO L78 Accepts]: Start accepts. Automaton has 108110 states and 111296 transitions. Word has length 2306 [2023-12-20 17:31:21,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:21,587 INFO L495 AbstractCegarLoop]: Abstraction has 108110 states and 111296 transitions. [2023-12-20 17:31:21,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 291.75) internal successors, (1167), 4 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 108110 states and 111296 transitions. [2023-12-20 17:31:21,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2677 [2023-12-20 17:31:21,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:21,944 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 17:31:21,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-20 17:31:21,945 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:21,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:21,946 INFO L85 PathProgramCache]: Analyzing trace with hash 2110331359, now seen corresponding path program 1 times [2023-12-20 17:31:21,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:21,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676141535] [2023-12-20 17:31:21,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:21,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 11845 backedges. 2688 proven. 0 refuted. 0 times theorem prover too weak. 9157 trivial. 0 not checked. [2023-12-20 17:31:24,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:24,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676141535] [2023-12-20 17:31:24,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676141535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:31:24,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:31:24,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 17:31:24,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706950366] [2023-12-20 17:31:24,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:24,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:31:24,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:24,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:31:24,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:31:24,323 INFO L87 Difference]: Start difference. First operand 108110 states and 111296 transitions. Second operand has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:26,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:26,435 INFO L93 Difference]: Finished difference Result 117482 states and 120800 transitions. [2023-12-20 17:31:26,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:31:26,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 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 2676 [2023-12-20 17:31:26,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:26,668 INFO L225 Difference]: With dead ends: 117482 [2023-12-20 17:31:26,668 INFO L226 Difference]: Without dead ends: 117055 [2023-12-20 17:31:26,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:31:26,676 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 553 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 2409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:26,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 102 Invalid, 2409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 17:31:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117055 states. [2023-12-20 17:31:27,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117055 to 108110. [2023-12-20 17:31:27,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108110 states, 108109 states have (on average 1.0294702568703809) internal successors, (111295), 108109 states have internal predecessors, (111295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:27,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108110 states to 108110 states and 111295 transitions. [2023-12-20 17:31:27,824 INFO L78 Accepts]: Start accepts. Automaton has 108110 states and 111295 transitions. Word has length 2676 [2023-12-20 17:31:27,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:27,825 INFO L495 AbstractCegarLoop]: Abstraction has 108110 states and 111295 transitions. [2023-12-20 17:31:27,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:27,825 INFO L276 IsEmpty]: Start isEmpty. Operand 108110 states and 111295 transitions. [2023-12-20 17:31:28,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2751 [2023-12-20 17:31:28,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:31:28,224 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:31:28,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-20 17:31:28,224 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:31:28,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:31:28,225 INFO L85 PathProgramCache]: Analyzing trace with hash -229762955, now seen corresponding path program 1 times [2023-12-20 17:31:28,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:31:28,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436224686] [2023-12-20 17:31:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:31:28,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:31:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:31:30,358 INFO L134 CoverageAnalysis]: Checked inductivity of 11865 backedges. 5878 proven. 0 refuted. 0 times theorem prover too weak. 5987 trivial. 0 not checked. [2023-12-20 17:31:30,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:31:30,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436224686] [2023-12-20 17:31:30,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436224686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:31:30,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:31:30,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:31:30,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140623378] [2023-12-20 17:31:30,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:31:30,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:31:30,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:31:30,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:31:30,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:31:30,361 INFO L87 Difference]: Start difference. First operand 108110 states and 111295 transitions. Second operand has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:32,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:31:32,016 INFO L93 Difference]: Finished difference Result 225147 states and 231705 transitions. [2023-12-20 17:31:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:31:32,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 0 states have call successors, (0), 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 2750 [2023-12-20 17:31:32,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:31:32,018 INFO L225 Difference]: With dead ends: 225147 [2023-12-20 17:31:32,018 INFO L226 Difference]: Without dead ends: 0 [2023-12-20 17:31:32,083 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 [2023-12-20 17:31:32,083 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 133 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:31:32,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 576 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 17:31:32,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-20 17:31:32,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-20 17:31:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-20 17:31:32,084 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2750 [2023-12-20 17:31:32,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:31:32,084 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-20 17:31:32,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:31:32,085 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-20 17:31:32,085 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-20 17:31:32,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 17:31:32,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-20 17:31:32,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.