/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 04:29:36,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 04:29:36,991 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 04:29:36,997 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 04:29:36,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 04:29:37,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 04:29:37,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 04:29:37,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 04:29:37,022 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 04:29:37,025 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 04:29:37,025 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 04:29:37,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 04:29:37,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 04:29:37,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 04:29:37,027 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 04:29:37,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 04:29:37,028 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 04:29:37,028 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 04:29:37,028 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 04:29:37,028 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 04:29:37,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 04:29:37,029 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 04:29:37,029 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 04:29:37,029 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 04:29:37,029 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 04:29:37,029 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 04:29:37,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 04:29:37,030 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 04:29:37,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 04:29:37,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 04:29:37,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 04:29:37,031 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 04:29:37,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:29:37,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 04:29:37,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 04:29:37,032 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 04:29:37,032 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 04:29:37,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 04:29:37,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 04:29:37,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 04:29:37,032 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 04:29:37,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 04:29:37,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 04:29:37,033 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 04:29:37,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 04:29:37,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 04:29:37,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 04:29:37,256 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 04:29:37,257 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 04:29:37,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label25.c [2023-12-19 04:29:38,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 04:29:38,600 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 04:29:38,601 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label25.c [2023-12-19 04:29:38,619 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/398ef503c/6495a6548db14c509ff7750384fa72b9/FLAGd8a67fd35 [2023-12-19 04:29:38,632 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/398ef503c/6495a6548db14c509ff7750384fa72b9 [2023-12-19 04:29:38,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 04:29:38,635 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 04:29:38,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 04:29:38,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 04:29:38,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 04:29:38,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:29:38" (1/1) ... [2023-12-19 04:29:38,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f39ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:38, skipping insertion in model container [2023-12-19 04:29:38,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:29:38" (1/1) ... [2023-12-19 04:29:38,722 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 04:29:38,897 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_label25.c[3642,3655] [2023-12-19 04:29:39,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:29:39,345 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 04:29:39,362 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_label25.c[3642,3655] [2023-12-19 04:29:39,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:29:39,619 INFO L206 MainTranslator]: Completed translation [2023-12-19 04:29:39,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39 WrapperNode [2023-12-19 04:29:39,622 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 04:29:39,623 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 04:29:39,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 04:29:39,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 04:29:39,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39" (1/1) ... [2023-12-19 04:29:39,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39" (1/1) ... [2023-12-19 04:29:39,831 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-19 04:29:39,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 04:29:39,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 04:29:39,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 04:29:39,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 04:29:39,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39" (1/1) ... [2023-12-19 04:29:39,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39" (1/1) ... [2023-12-19 04:29:39,876 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39" (1/1) ... [2023-12-19 04:29:39,966 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 04:29:39,966 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39" (1/1) ... [2023-12-19 04:29:39,966 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39" (1/1) ... [2023-12-19 04:29:40,158 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39" (1/1) ... [2023-12-19 04:29:40,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39" (1/1) ... [2023-12-19 04:29:40,222 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39" (1/1) ... [2023-12-19 04:29:40,280 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39" (1/1) ... [2023-12-19 04:29:40,315 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 04:29:40,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 04:29:40,317 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 04:29:40,317 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 04:29:40,318 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39" (1/1) ... [2023-12-19 04:29:40,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:29:40,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:29:40,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 04:29:40,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 04:29:40,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 04:29:40,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 04:29:40,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 04:29:40,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 04:29:40,423 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 04:29:40,424 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 04:29:42,880 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 04:29:42,925 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 04:29:42,925 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 04:29:42,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:29:42 BoogieIcfgContainer [2023-12-19 04:29:42,926 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 04:29:42,927 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 04:29:42,928 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 04:29:42,930 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 04:29:42,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:29:38" (1/3) ... [2023-12-19 04:29:42,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cc90de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:29:42, skipping insertion in model container [2023-12-19 04:29:42,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:29:39" (2/3) ... [2023-12-19 04:29:42,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cc90de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:29:42, skipping insertion in model container [2023-12-19 04:29:42,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:29:42" (3/3) ... [2023-12-19 04:29:42,933 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label25.c [2023-12-19 04:29:42,945 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 04:29:42,946 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 04:29:43,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 04:29:43,008 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;@5ac779f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 04:29:43,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 04:29:43,015 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) [2023-12-19 04:29:43,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-19 04:29:43,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:43,021 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] [2023-12-19 04:29:43,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:43,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1538132335, now seen corresponding path program 1 times [2023-12-19 04:29:43,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:43,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113975014] [2023-12-19 04:29:43,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:43,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:29:43,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:43,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113975014] [2023-12-19 04:29:43,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113975014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:43,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:43,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:29:43,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167001946] [2023-12-19 04:29:43,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:43,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 04:29:43,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:43,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 04:29:43,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:29:43,227 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:43,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:43,293 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-19 04:29:43,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 04:29:43,295 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-19 04:29:43,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:43,304 INFO L225 Difference]: With dead ends: 1055 [2023-12-19 04:29:43,305 INFO L226 Difference]: Without dead ends: 526 [2023-12-19 04:29:43,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:29:43,311 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 [2023-12-19 04:29:43,311 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] [2023-12-19 04:29:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-19 04:29:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-19 04:29:43,361 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) [2023-12-19 04:29:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-19 04:29:43,363 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 22 [2023-12-19 04:29:43,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:43,364 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-19 04:29:43,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:43,367 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-19 04:29:43,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-19 04:29:43,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:43,367 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] [2023-12-19 04:29:43,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 04:29:43,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:43,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:43,368 INFO L85 PathProgramCache]: Analyzing trace with hash 413992905, now seen corresponding path program 1 times [2023-12-19 04:29:43,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:43,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829697466] [2023-12-19 04:29:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:43,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:29:43,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:43,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829697466] [2023-12-19 04:29:43,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829697466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:43,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:43,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:29:43,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756753616] [2023-12-19 04:29:43,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:43,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:43,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:43,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:43,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:43,481 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:45,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:45,649 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2023-12-19 04:29:45,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:45,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-12-19 04:29:45,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:45,653 INFO L225 Difference]: With dead ends: 1501 [2023-12-19 04:29:45,653 INFO L226 Difference]: Without dead ends: 976 [2023-12-19 04:29:45,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:45,656 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 449 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:45,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 04:29:45,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-12-19 04:29:45,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2023-12-19 04:29:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:45,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2023-12-19 04:29:45,674 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 22 [2023-12-19 04:29:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:45,674 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2023-12-19 04:29:45,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:45,674 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2023-12-19 04:29:45,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-19 04:29:45,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:45,676 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 04:29:45,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 04:29:45,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:45,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:45,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1995396162, now seen corresponding path program 1 times [2023-12-19 04:29:45,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:45,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118941752] [2023-12-19 04:29:45,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:45,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:29:45,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:45,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118941752] [2023-12-19 04:29:45,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118941752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:45,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:45,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:29:45,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965007310] [2023-12-19 04:29:45,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:45,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:45,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:45,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:45,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:45,813 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:47,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:47,692 INFO L93 Difference]: Finished difference Result 2812 states and 4380 transitions. [2023-12-19 04:29:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:47,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2023-12-19 04:29:47,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:47,698 INFO L225 Difference]: With dead ends: 2812 [2023-12-19 04:29:47,698 INFO L226 Difference]: Without dead ends: 1843 [2023-12-19 04:29:47,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:47,700 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:47,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 577 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:29:47,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2023-12-19 04:29:47,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1840. [2023-12-19 04:29:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3501903208265362) internal successors, (2483), 1839 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2483 transitions. [2023-12-19 04:29:47,737 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2483 transitions. Word has length 89 [2023-12-19 04:29:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:47,737 INFO L495 AbstractCegarLoop]: Abstraction has 1840 states and 2483 transitions. [2023-12-19 04:29:47,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2483 transitions. [2023-12-19 04:29:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-19 04:29:47,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:47,740 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-19 04:29:47,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 04:29:47,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:47,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:47,740 INFO L85 PathProgramCache]: Analyzing trace with hash -8549380, now seen corresponding path program 1 times [2023-12-19 04:29:47,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:47,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335043628] [2023-12-19 04:29:47,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:47,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:29:47,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:47,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335043628] [2023-12-19 04:29:47,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335043628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:47,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:47,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:47,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171990516] [2023-12-19 04:29:47,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:47,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:47,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:47,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:47,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:47,993 INFO L87 Difference]: Start difference. First operand 1840 states and 2483 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:49,753 INFO L93 Difference]: Finished difference Result 4551 states and 6281 transitions. [2023-12-19 04:29:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:49,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-19 04:29:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:49,761 INFO L225 Difference]: With dead ends: 4551 [2023-12-19 04:29:49,762 INFO L226 Difference]: Without dead ends: 2712 [2023-12-19 04:29:49,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:49,765 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 484 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:49,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 883 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 04:29:49,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2023-12-19 04:29:49,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2710. [2023-12-19 04:29:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 1.3004798818752308) internal successors, (3523), 2709 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:49,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3523 transitions. [2023-12-19 04:29:49,802 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3523 transitions. Word has length 92 [2023-12-19 04:29:49,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:49,803 INFO L495 AbstractCegarLoop]: Abstraction has 2710 states and 3523 transitions. [2023-12-19 04:29:49,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:49,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3523 transitions. [2023-12-19 04:29:49,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-19 04:29:49,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:49,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:49,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 04:29:49,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:49,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:49,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1059193644, now seen corresponding path program 1 times [2023-12-19 04:29:49,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:49,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854222041] [2023-12-19 04:29:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:49,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:49,960 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-19 04:29:49,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:49,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854222041] [2023-12-19 04:29:49,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854222041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:49,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:49,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:29:49,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591356007] [2023-12-19 04:29:49,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:49,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:49,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:49,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:49,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:49,962 INFO L87 Difference]: Start difference. First operand 2710 states and 3523 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:51,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:51,767 INFO L93 Difference]: Finished difference Result 7983 states and 10360 transitions. [2023-12-19 04:29:51,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:51,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 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 161 [2023-12-19 04:29:51,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:51,779 INFO L225 Difference]: With dead ends: 7983 [2023-12-19 04:29:51,779 INFO L226 Difference]: Without dead ends: 4420 [2023-12-19 04:29:51,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:51,790 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 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, 1.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:51,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-19 04:29:51,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2023-12-19 04:29:51,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3570. [2023-12-19 04:29:51,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3570 states, 3569 states have (on average 1.177640795741104) internal successors, (4203), 3569 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 4203 transitions. [2023-12-19 04:29:51,841 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 4203 transitions. Word has length 161 [2023-12-19 04:29:51,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:51,841 INFO L495 AbstractCegarLoop]: Abstraction has 3570 states and 4203 transitions. [2023-12-19 04:29:51,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 2 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:51,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 4203 transitions. [2023-12-19 04:29:51,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-19 04:29:51,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:51,845 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:51,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 04:29:51,846 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:51,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:51,846 INFO L85 PathProgramCache]: Analyzing trace with hash -961544538, now seen corresponding path program 1 times [2023-12-19 04:29:51,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:51,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721878304] [2023-12-19 04:29:51,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:51,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:29:52,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:52,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721878304] [2023-12-19 04:29:52,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721878304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:52,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:52,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:52,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131775475] [2023-12-19 04:29:52,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:52,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:52,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:52,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:52,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:52,040 INFO L87 Difference]: Start difference. First operand 3570 states and 4203 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:53,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:53,506 INFO L93 Difference]: Finished difference Result 9272 states and 11086 transitions. [2023-12-19 04:29:53,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:53,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2023-12-19 04:29:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:53,522 INFO L225 Difference]: With dead ends: 9272 [2023-12-19 04:29:53,522 INFO L226 Difference]: Without dead ends: 5703 [2023-12-19 04:29:53,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:53,529 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:53,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:29:53,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2023-12-19 04:29:53,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5703. [2023-12-19 04:29:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5703 states, 5702 states have (on average 1.1595931252192213) internal successors, (6612), 5702 states have internal predecessors, (6612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5703 states to 5703 states and 6612 transitions. [2023-12-19 04:29:53,612 INFO L78 Accepts]: Start accepts. Automaton has 5703 states and 6612 transitions. Word has length 174 [2023-12-19 04:29:53,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:53,613 INFO L495 AbstractCegarLoop]: Abstraction has 5703 states and 6612 transitions. [2023-12-19 04:29:53,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:53,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5703 states and 6612 transitions. [2023-12-19 04:29:53,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-19 04:29:53,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:53,614 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:53,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 04:29:53,615 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:53,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:53,615 INFO L85 PathProgramCache]: Analyzing trace with hash 2137519051, now seen corresponding path program 1 times [2023-12-19 04:29:53,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:53,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323032653] [2023-12-19 04:29:53,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:53,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-19 04:29:53,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:53,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323032653] [2023-12-19 04:29:53,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323032653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:53,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:53,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:53,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383165407] [2023-12-19 04:29:53,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:53,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:53,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:53,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:53,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:53,738 INFO L87 Difference]: Start difference. First operand 5703 states and 6612 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:55,304 INFO L93 Difference]: Finished difference Result 14375 states and 16775 transitions. [2023-12-19 04:29:55,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:55,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 176 [2023-12-19 04:29:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:55,338 INFO L225 Difference]: With dead ends: 14375 [2023-12-19 04:29:55,338 INFO L226 Difference]: Without dead ends: 8672 [2023-12-19 04:29:55,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:55,346 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 427 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:55,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 442 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:29:55,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8672 states. [2023-12-19 04:29:55,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8672 to 5676. [2023-12-19 04:29:55,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5675 states have (on average 1.157885462555066) internal successors, (6571), 5675 states have internal predecessors, (6571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 6571 transitions. [2023-12-19 04:29:55,442 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 6571 transitions. Word has length 176 [2023-12-19 04:29:55,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:55,443 INFO L495 AbstractCegarLoop]: Abstraction has 5676 states and 6571 transitions. [2023-12-19 04:29:55,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:55,443 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 6571 transitions. [2023-12-19 04:29:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-19 04:29:55,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:55,445 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:55,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 04:29:55,445 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:55,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:55,446 INFO L85 PathProgramCache]: Analyzing trace with hash 78038217, now seen corresponding path program 1 times [2023-12-19 04:29:55,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:55,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748424558] [2023-12-19 04:29:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:55,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-19 04:29:55,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:55,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748424558] [2023-12-19 04:29:55,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748424558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:55,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:55,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:55,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317628741] [2023-12-19 04:29:55,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:55,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:55,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:55,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:55,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:55,595 INFO L87 Difference]: Start difference. First operand 5676 states and 6571 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:57,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:57,120 INFO L93 Difference]: Finished difference Result 14314 states and 16679 transitions. [2023-12-19 04:29:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:57,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2023-12-19 04:29:57,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:57,136 INFO L225 Difference]: With dead ends: 14314 [2023-12-19 04:29:57,137 INFO L226 Difference]: Without dead ends: 7789 [2023-12-19 04:29:57,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:57,143 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 383 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:57,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 844 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:29:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7789 states. [2023-12-19 04:29:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7789 to 7789. [2023-12-19 04:29:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7789 states, 7788 states have (on average 1.11864406779661) internal successors, (8712), 7788 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7789 states to 7789 states and 8712 transitions. [2023-12-19 04:29:57,227 INFO L78 Accepts]: Start accepts. Automaton has 7789 states and 8712 transitions. Word has length 254 [2023-12-19 04:29:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:57,227 INFO L495 AbstractCegarLoop]: Abstraction has 7789 states and 8712 transitions. [2023-12-19 04:29:57,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 7789 states and 8712 transitions. [2023-12-19 04:29:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-19 04:29:57,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:57,230 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:57,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 04:29:57,230 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:57,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:57,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1074751524, now seen corresponding path program 1 times [2023-12-19 04:29:57,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:57,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519578924] [2023-12-19 04:29:57,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:57,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2023-12-19 04:29:57,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:57,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519578924] [2023-12-19 04:29:57,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519578924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:29:57,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:29:57,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:29:57,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029488384] [2023-12-19 04:29:57,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:29:57,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:29:57,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:29:57,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:29:57,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:57,415 INFO L87 Difference]: Start difference. First operand 7789 states and 8712 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:29:58,920 INFO L93 Difference]: Finished difference Result 18557 states and 20948 transitions. [2023-12-19 04:29:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:29:58,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2023-12-19 04:29:58,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:29:58,934 INFO L225 Difference]: With dead ends: 18557 [2023-12-19 04:29:58,935 INFO L226 Difference]: Without dead ends: 10769 [2023-12-19 04:29:58,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:29:58,942 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 481 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:29:58,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 328 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:29:58,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10769 states. [2023-12-19 04:29:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10769 to 9915. [2023-12-19 04:29:59,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9915 states, 9914 states have (on average 1.1232600363122855) internal successors, (11136), 9914 states have internal predecessors, (11136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9915 states to 9915 states and 11136 transitions. [2023-12-19 04:29:59,035 INFO L78 Accepts]: Start accepts. Automaton has 9915 states and 11136 transitions. Word has length 294 [2023-12-19 04:29:59,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:29:59,036 INFO L495 AbstractCegarLoop]: Abstraction has 9915 states and 11136 transitions. [2023-12-19 04:29:59,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:29:59,036 INFO L276 IsEmpty]: Start isEmpty. Operand 9915 states and 11136 transitions. [2023-12-19 04:29:59,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-12-19 04:29:59,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:29:59,039 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:29:59,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 04:29:59,040 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:29:59,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:29:59,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1255848112, now seen corresponding path program 1 times [2023-12-19 04:29:59,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:29:59,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095092541] [2023-12-19 04:29:59,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:59,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:29:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 41 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:29:59,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:29:59,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095092541] [2023-12-19 04:29:59,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095092541] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:29:59,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603827662] [2023-12-19 04:29:59,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:29:59,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:29:59,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:29:59,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:29:59,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 04:29:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:29:59,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 04:29:59,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:29:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 41 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:29:59,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:30:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:30:00,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603827662] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 04:30:00,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 04:30:00,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-19 04:30:00,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547358958] [2023-12-19 04:30:00,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:00,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:30:00,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:00,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:30:00,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:30:00,160 INFO L87 Difference]: Start difference. First operand 9915 states and 11136 transitions. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:02,656 INFO L93 Difference]: Finished difference Result 27937 states and 31645 transitions. [2023-12-19 04:30:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:30:02,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 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 311 [2023-12-19 04:30:02,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:02,682 INFO L225 Difference]: With dead ends: 27937 [2023-12-19 04:30:02,682 INFO L226 Difference]: Without dead ends: 17588 [2023-12-19 04:30:02,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:30:02,694 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 726 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:02,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 176 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-19 04:30:02,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17588 states. [2023-12-19 04:30:02,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17588 to 17587. [2023-12-19 04:30:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17587 states, 17586 states have (on average 1.1217445695439554) internal successors, (19727), 17586 states have internal predecessors, (19727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:02,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17587 states to 17587 states and 19727 transitions. [2023-12-19 04:30:02,940 INFO L78 Accepts]: Start accepts. Automaton has 17587 states and 19727 transitions. Word has length 311 [2023-12-19 04:30:02,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:02,941 INFO L495 AbstractCegarLoop]: Abstraction has 17587 states and 19727 transitions. [2023-12-19 04:30:02,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:02,941 INFO L276 IsEmpty]: Start isEmpty. Operand 17587 states and 19727 transitions. [2023-12-19 04:30:02,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-19 04:30:02,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:02,949 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:02,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-19 04:30:03,156 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 [2023-12-19 04:30:03,157 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:03,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:03,159 INFO L85 PathProgramCache]: Analyzing trace with hash 993600413, now seen corresponding path program 1 times [2023-12-19 04:30:03,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:03,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60391103] [2023-12-19 04:30:03,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:03,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-19 04:30:03,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:03,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60391103] [2023-12-19 04:30:03,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60391103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:03,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:03,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:03,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965280257] [2023-12-19 04:30:03,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:03,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:03,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:03,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:03,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:03,520 INFO L87 Difference]: Start difference. First operand 17587 states and 19727 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:05,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:05,513 INFO L93 Difference]: Finished difference Result 44127 states and 49460 transitions. [2023-12-19 04:30:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:05,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 334 [2023-12-19 04:30:05,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:05,554 INFO L225 Difference]: With dead ends: 44127 [2023-12-19 04:30:05,554 INFO L226 Difference]: Without dead ends: 26116 [2023-12-19 04:30:05,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:05,567 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 432 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:05,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 828 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:30:05,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26116 states. [2023-12-19 04:30:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26116 to 24825. [2023-12-19 04:30:05,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24825 states, 24824 states have (on average 1.1090879793747985) internal successors, (27532), 24824 states have internal predecessors, (27532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24825 states to 24825 states and 27532 transitions. [2023-12-19 04:30:05,873 INFO L78 Accepts]: Start accepts. Automaton has 24825 states and 27532 transitions. Word has length 334 [2023-12-19 04:30:05,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:05,873 INFO L495 AbstractCegarLoop]: Abstraction has 24825 states and 27532 transitions. [2023-12-19 04:30:05,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:05,873 INFO L276 IsEmpty]: Start isEmpty. Operand 24825 states and 27532 transitions. [2023-12-19 04:30:05,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-12-19 04:30:05,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:05,879 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:05,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 04:30:05,879 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:05,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:05,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1132047844, now seen corresponding path program 1 times [2023-12-19 04:30:05,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:05,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729486971] [2023-12-19 04:30:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:05,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:06,105 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:30:06,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:06,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729486971] [2023-12-19 04:30:06,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729486971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:06,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:06,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:06,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342642738] [2023-12-19 04:30:06,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:06,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:30:06,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:06,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:30:06,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:30:06,108 INFO L87 Difference]: Start difference. First operand 24825 states and 27532 transitions. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:09,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:09,014 INFO L93 Difference]: Finished difference Result 65000 states and 72155 transitions. [2023-12-19 04:30:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:30:09,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 361 [2023-12-19 04:30:09,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:09,061 INFO L225 Difference]: With dead ends: 65000 [2023-12-19 04:30:09,061 INFO L226 Difference]: Without dead ends: 38473 [2023-12-19 04:30:09,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:30:09,079 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 553 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2758 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 2758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:09,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 406 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 2758 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 04:30:09,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38473 states. [2023-12-19 04:30:09,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38473 to 36750. [2023-12-19 04:30:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36750 states, 36749 states have (on average 1.1042477346322348) internal successors, (40580), 36749 states have internal predecessors, (40580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36750 states to 36750 states and 40580 transitions. [2023-12-19 04:30:09,420 INFO L78 Accepts]: Start accepts. Automaton has 36750 states and 40580 transitions. Word has length 361 [2023-12-19 04:30:09,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:09,420 INFO L495 AbstractCegarLoop]: Abstraction has 36750 states and 40580 transitions. [2023-12-19 04:30:09,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:09,421 INFO L276 IsEmpty]: Start isEmpty. Operand 36750 states and 40580 transitions. [2023-12-19 04:30:09,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-19 04:30:09,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:09,428 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 04:30:09,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 04:30:09,428 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:09,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:09,429 INFO L85 PathProgramCache]: Analyzing trace with hash -866186227, now seen corresponding path program 1 times [2023-12-19 04:30:09,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:09,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993971778] [2023-12-19 04:30:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:09,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 42 proven. 249 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:30:09,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:09,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993971778] [2023-12-19 04:30:09,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993971778] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:30:09,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902593445] [2023-12-19 04:30:09,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:09,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:30:09,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:30:09,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:30:09,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 04:30:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:10,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 04:30:10,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:30:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-19 04:30:10,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:30:10,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902593445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:10,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:30:10,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-12-19 04:30:10,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144687846] [2023-12-19 04:30:10,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:10,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:30:10,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:10,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:30:10,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:30:10,305 INFO L87 Difference]: Start difference. First operand 36750 states and 40580 transitions. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:13,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:13,247 INFO L93 Difference]: Finished difference Result 93106 states and 102893 transitions. [2023-12-19 04:30:13,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:30:13,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 385 [2023-12-19 04:30:13,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:13,313 INFO L225 Difference]: With dead ends: 93106 [2023-12-19 04:30:13,313 INFO L226 Difference]: Without dead ends: 55505 [2023-12-19 04:30:13,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:30:13,321 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 795 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:13,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 257 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 04:30:13,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55505 states. [2023-12-19 04:30:13,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55505 to 52523. [2023-12-19 04:30:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52523 states, 52522 states have (on average 1.1018049579223945) internal successors, (57869), 52522 states have internal predecessors, (57869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52523 states to 52523 states and 57869 transitions. [2023-12-19 04:30:13,820 INFO L78 Accepts]: Start accepts. Automaton has 52523 states and 57869 transitions. Word has length 385 [2023-12-19 04:30:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:13,822 INFO L495 AbstractCegarLoop]: Abstraction has 52523 states and 57869 transitions. [2023-12-19 04:30:13,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:13,822 INFO L276 IsEmpty]: Start isEmpty. Operand 52523 states and 57869 transitions. [2023-12-19 04:30:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2023-12-19 04:30:13,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:13,829 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 04:30:13,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 04:30:14,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 04:30:14,037 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:14,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:14,037 INFO L85 PathProgramCache]: Analyzing trace with hash -318518843, now seen corresponding path program 1 times [2023-12-19 04:30:14,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:14,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724012544] [2023-12-19 04:30:14,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:14,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 202 proven. 78 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 04:30:14,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:14,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724012544] [2023-12-19 04:30:14,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724012544] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:30:14,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794314620] [2023-12-19 04:30:14,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:14,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:30:14,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:30:14,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:30:14,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 04:30:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:14,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 04:30:14,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:30:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 202 proven. 78 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 04:30:14,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:30:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 04:30:15,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794314620] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 04:30:15,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 04:30:15,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-19 04:30:15,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484854731] [2023-12-19 04:30:15,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:15,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:30:15,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:15,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:30:15,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:30:15,082 INFO L87 Difference]: Start difference. First operand 52523 states and 57869 transitions. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:17,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:17,874 INFO L93 Difference]: Finished difference Result 118258 states and 130440 transitions. [2023-12-19 04:30:17,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:30:17,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 390 [2023-12-19 04:30:17,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:17,948 INFO L225 Difference]: With dead ends: 118258 [2023-12-19 04:30:17,949 INFO L226 Difference]: Without dead ends: 65309 [2023-12-19 04:30:17,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:30:17,983 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 840 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:17,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 193 Invalid, 2738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 2284 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 04:30:18,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65309 states. [2023-12-19 04:30:18,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65309 to 60629. [2023-12-19 04:30:18,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60629 states, 60628 states have (on average 1.1056772448373688) internal successors, (67035), 60628 states have internal predecessors, (67035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60629 states to 60629 states and 67035 transitions. [2023-12-19 04:30:18,841 INFO L78 Accepts]: Start accepts. Automaton has 60629 states and 67035 transitions. Word has length 390 [2023-12-19 04:30:18,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:18,842 INFO L495 AbstractCegarLoop]: Abstraction has 60629 states and 67035 transitions. [2023-12-19 04:30:18,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:18,842 INFO L276 IsEmpty]: Start isEmpty. Operand 60629 states and 67035 transitions. [2023-12-19 04:30:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-12-19 04:30:18,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:18,848 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 04:30:18,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 04:30:19,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:30:19,054 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:19,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:19,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1688826673, now seen corresponding path program 1 times [2023-12-19 04:30:19,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:19,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993789346] [2023-12-19 04:30:19,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:19,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:30:19,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:19,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993789346] [2023-12-19 04:30:19,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993789346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:19,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:19,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:30:19,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148531303] [2023-12-19 04:30:19,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:19,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:30:19,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:19,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:30:19,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:30:19,629 INFO L87 Difference]: Start difference. First operand 60629 states and 67035 transitions. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:22,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:22,338 INFO L93 Difference]: Finished difference Result 153669 states and 169449 transitions. [2023-12-19 04:30:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:30:22,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 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 404 [2023-12-19 04:30:22,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:22,437 INFO L225 Difference]: With dead ends: 153669 [2023-12-19 04:30:22,437 INFO L226 Difference]: Without dead ends: 93041 [2023-12-19 04:30:22,463 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 [2023-12-19 04:30:22,464 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 716 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:22,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 185 Invalid, 2797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-19 04:30:22,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93041 states. [2023-12-19 04:30:23,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93041 to 86648. [2023-12-19 04:30:23,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86648 states, 86647 states have (on average 1.1046891409973802) internal successors, (95718), 86647 states have internal predecessors, (95718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86648 states to 86648 states and 95718 transitions. [2023-12-19 04:30:23,513 INFO L78 Accepts]: Start accepts. Automaton has 86648 states and 95718 transitions. Word has length 404 [2023-12-19 04:30:23,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:23,513 INFO L495 AbstractCegarLoop]: Abstraction has 86648 states and 95718 transitions. [2023-12-19 04:30:23,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand 86648 states and 95718 transitions. [2023-12-19 04:30:23,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2023-12-19 04:30:23,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:23,519 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2023-12-19 04:30:23,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 04:30:23,520 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:23,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:23,520 INFO L85 PathProgramCache]: Analyzing trace with hash 412683164, now seen corresponding path program 1 times [2023-12-19 04:30:23,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:23,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850752965] [2023-12-19 04:30:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:23,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-19 04:30:23,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:23,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850752965] [2023-12-19 04:30:23,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850752965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:23,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:23,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497000347] [2023-12-19 04:30:23,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:23,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:23,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:23,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:23,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:23,862 INFO L87 Difference]: Start difference. First operand 86648 states and 95718 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:25,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:25,872 INFO L93 Difference]: Finished difference Result 188177 states and 207853 transitions. [2023-12-19 04:30:25,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:25,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 426 [2023-12-19 04:30:25,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:26,013 INFO L225 Difference]: With dead ends: 188177 [2023-12-19 04:30:26,013 INFO L226 Difference]: Without dead ends: 95985 [2023-12-19 04:30:26,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:26,059 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 498 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:26,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 706 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:30:26,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95985 states. [2023-12-19 04:30:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95985 to 95974. [2023-12-19 04:30:27,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95974 states, 95973 states have (on average 1.0926823169016286) internal successors, (104868), 95973 states have internal predecessors, (104868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:27,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95974 states to 95974 states and 104868 transitions. [2023-12-19 04:30:27,239 INFO L78 Accepts]: Start accepts. Automaton has 95974 states and 104868 transitions. Word has length 426 [2023-12-19 04:30:27,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:27,240 INFO L495 AbstractCegarLoop]: Abstraction has 95974 states and 104868 transitions. [2023-12-19 04:30:27,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:27,240 INFO L276 IsEmpty]: Start isEmpty. Operand 95974 states and 104868 transitions. [2023-12-19 04:30:27,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-19 04:30:27,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:27,250 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:27,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 04:30:27,251 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:27,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:27,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1694072045, now seen corresponding path program 1 times [2023-12-19 04:30:27,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:27,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111992200] [2023-12-19 04:30:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:27,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 299 proven. 82 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 04:30:28,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:28,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111992200] [2023-12-19 04:30:28,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111992200] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:30:28,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811270815] [2023-12-19 04:30:28,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:28,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:30:28,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:30:28,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:30:28,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 04:30:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:28,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 04:30:28,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:30:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 299 proven. 82 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 04:30:29,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:30:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 299 proven. 82 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 04:30:30,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811270815] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 04:30:30,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 04:30:30,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-12-19 04:30:30,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731964951] [2023-12-19 04:30:30,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 04:30:30,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 04:30:30,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:30,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 04:30:30,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 04:30:30,142 INFO L87 Difference]: Start difference. First operand 95974 states and 104868 transitions. Second operand has 10 states, 10 states have (on average 97.3) internal successors, (973), 9 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:36,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:36,567 INFO L93 Difference]: Finished difference Result 227491 states and 248766 transitions. [2023-12-19 04:30:36,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 04:30:36,567 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 97.3) internal successors, (973), 9 states have internal predecessors, (973), 0 states have call successors, (0), 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 475 [2023-12-19 04:30:36,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:36,739 INFO L225 Difference]: With dead ends: 227491 [2023-12-19 04:30:36,739 INFO L226 Difference]: Without dead ends: 131518 [2023-12-19 04:30:36,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 945 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-19 04:30:36,795 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 3066 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 7450 mSolverCounterSat, 1136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3066 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 8586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1136 IncrementalHoareTripleChecker+Valid, 7450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:36,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3066 Valid, 330 Invalid, 8586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1136 Valid, 7450 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 04:30:36,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131518 states. [2023-12-19 04:30:38,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131518 to 121056. [2023-12-19 04:30:38,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121056 states, 121055 states have (on average 1.0867869976456983) internal successors, (131561), 121055 states have internal predecessors, (131561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:38,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121056 states to 121056 states and 131561 transitions. [2023-12-19 04:30:38,748 INFO L78 Accepts]: Start accepts. Automaton has 121056 states and 131561 transitions. Word has length 475 [2023-12-19 04:30:38,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:38,748 INFO L495 AbstractCegarLoop]: Abstraction has 121056 states and 131561 transitions. [2023-12-19 04:30:38,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 97.3) internal successors, (973), 9 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:38,748 INFO L276 IsEmpty]: Start isEmpty. Operand 121056 states and 131561 transitions. [2023-12-19 04:30:38,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2023-12-19 04:30:38,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:38,757 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 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] [2023-12-19 04:30:38,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 04:30:38,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 04:30:38,958 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:38,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:38,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2059684527, now seen corresponding path program 1 times [2023-12-19 04:30:38,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:38,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217366916] [2023-12-19 04:30:38,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:38,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-19 04:30:39,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:39,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217366916] [2023-12-19 04:30:39,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217366916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:39,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:39,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:39,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502168804] [2023-12-19 04:30:39,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:39,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:39,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:39,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:39,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:39,386 INFO L87 Difference]: Start difference. First operand 121056 states and 131561 transitions. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:41,537 INFO L93 Difference]: Finished difference Result 256166 states and 278653 transitions. [2023-12-19 04:30:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:41,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 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 491 [2023-12-19 04:30:41,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:41,719 INFO L225 Difference]: With dead ends: 256166 [2023-12-19 04:30:41,719 INFO L226 Difference]: Without dead ends: 132985 [2023-12-19 04:30:41,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:41,791 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 437 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:41,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 587 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:30:42,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132985 states. [2023-12-19 04:30:43,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132985 to 129571. [2023-12-19 04:30:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129571 states, 129570 states have (on average 1.0843250752489002) internal successors, (140496), 129570 states have internal predecessors, (140496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129571 states to 129571 states and 140496 transitions. [2023-12-19 04:30:43,791 INFO L78 Accepts]: Start accepts. Automaton has 129571 states and 140496 transitions. Word has length 491 [2023-12-19 04:30:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:43,791 INFO L495 AbstractCegarLoop]: Abstraction has 129571 states and 140496 transitions. [2023-12-19 04:30:43,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 129571 states and 140496 transitions. [2023-12-19 04:30:43,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2023-12-19 04:30:43,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:43,812 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:43,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 04:30:43,812 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:43,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1733455588, now seen corresponding path program 1 times [2023-12-19 04:30:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:43,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992612557] [2023-12-19 04:30:43,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:43,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 547 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-19 04:30:44,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:44,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992612557] [2023-12-19 04:30:44,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992612557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:44,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:44,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:44,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976550909] [2023-12-19 04:30:44,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:44,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:44,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:44,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:44,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:44,380 INFO L87 Difference]: Start difference. First operand 129571 states and 140496 transitions. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:46,541 INFO L93 Difference]: Finished difference Result 271925 states and 294635 transitions. [2023-12-19 04:30:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:46,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 538 [2023-12-19 04:30:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:46,726 INFO L225 Difference]: With dead ends: 271925 [2023-12-19 04:30:46,727 INFO L226 Difference]: Without dead ends: 143205 [2023-12-19 04:30:46,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:46,983 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 300 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:46,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 770 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:30:47,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143205 states. [2023-12-19 04:30:48,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143205 to 140208. [2023-12-19 04:30:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140208 states, 140207 states have (on average 1.078541014357343) internal successors, (151219), 140207 states have internal predecessors, (151219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:48,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140208 states to 140208 states and 151219 transitions. [2023-12-19 04:30:48,940 INFO L78 Accepts]: Start accepts. Automaton has 140208 states and 151219 transitions. Word has length 538 [2023-12-19 04:30:48,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:48,940 INFO L495 AbstractCegarLoop]: Abstraction has 140208 states and 151219 transitions. [2023-12-19 04:30:48,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:48,941 INFO L276 IsEmpty]: Start isEmpty. Operand 140208 states and 151219 transitions. [2023-12-19 04:30:48,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2023-12-19 04:30:48,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:48,965 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:48,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 04:30:48,965 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:48,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:48,965 INFO L85 PathProgramCache]: Analyzing trace with hash -287653876, now seen corresponding path program 1 times [2023-12-19 04:30:48,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:48,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881812943] [2023-12-19 04:30:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:48,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-12-19 04:30:49,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:49,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881812943] [2023-12-19 04:30:49,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881812943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:49,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:49,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:49,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668566113] [2023-12-19 04:30:49,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:49,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:49,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:49,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:49,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:49,356 INFO L87 Difference]: Start difference. First operand 140208 states and 151219 transitions. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:51,345 INFO L93 Difference]: Finished difference Result 284228 states and 306119 transitions. [2023-12-19 04:30:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:30:51,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 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 551 [2023-12-19 04:30:51,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:51,520 INFO L225 Difference]: With dead ends: 284228 [2023-12-19 04:30:51,520 INFO L226 Difference]: Without dead ends: 144871 [2023-12-19 04:30:51,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:51,771 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 285 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:51,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 662 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 04:30:51,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144871 states. [2023-12-19 04:30:53,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144871 to 136782. [2023-12-19 04:30:53,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136782 states, 136781 states have (on average 1.070799306921283) internal successors, (146465), 136781 states have internal predecessors, (146465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136782 states to 136782 states and 146465 transitions. [2023-12-19 04:30:53,569 INFO L78 Accepts]: Start accepts. Automaton has 136782 states and 146465 transitions. Word has length 551 [2023-12-19 04:30:53,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:53,570 INFO L495 AbstractCegarLoop]: Abstraction has 136782 states and 146465 transitions. [2023-12-19 04:30:53,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:53,570 INFO L276 IsEmpty]: Start isEmpty. Operand 136782 states and 146465 transitions. [2023-12-19 04:30:53,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2023-12-19 04:30:53,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:53,578 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:53,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 04:30:53,578 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:53,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:53,579 INFO L85 PathProgramCache]: Analyzing trace with hash 465650853, now seen corresponding path program 1 times [2023-12-19 04:30:53,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:53,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860130402] [2023-12-19 04:30:53,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:53,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 647 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 04:30:54,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:54,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860130402] [2023-12-19 04:30:54,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860130402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:54,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:54,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:30:54,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096715864] [2023-12-19 04:30:54,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:54,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:30:54,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:54,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:30:54,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:30:54,147 INFO L87 Difference]: Start difference. First operand 136782 states and 146465 transitions. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:56,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:30:56,727 INFO L93 Difference]: Finished difference Result 278238 states and 297756 transitions. [2023-12-19 04:30:56,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:30:56,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 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 557 [2023-12-19 04:30:56,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:30:56,923 INFO L225 Difference]: With dead ends: 278238 [2023-12-19 04:30:56,926 INFO L226 Difference]: Without dead ends: 142307 [2023-12-19 04:30:57,009 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 [2023-12-19 04:30:57,010 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 721 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:30:57,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 700 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:30:57,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142307 states. [2023-12-19 04:30:58,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142307 to 140607. [2023-12-19 04:30:58,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140607 states, 140606 states have (on average 1.06901554698946) internal successors, (150310), 140606 states have internal predecessors, (150310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:58,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140607 states to 140607 states and 150310 transitions. [2023-12-19 04:30:58,745 INFO L78 Accepts]: Start accepts. Automaton has 140607 states and 150310 transitions. Word has length 557 [2023-12-19 04:30:58,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:30:58,746 INFO L495 AbstractCegarLoop]: Abstraction has 140607 states and 150310 transitions. [2023-12-19 04:30:58,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:30:58,746 INFO L276 IsEmpty]: Start isEmpty. Operand 140607 states and 150310 transitions. [2023-12-19 04:30:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2023-12-19 04:30:58,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:30:58,758 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:30:58,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 04:30:58,758 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:30:58,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:30:58,759 INFO L85 PathProgramCache]: Analyzing trace with hash -632357717, now seen corresponding path program 1 times [2023-12-19 04:30:58,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:30:58,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447667258] [2023-12-19 04:30:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:30:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:30:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:30:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2023-12-19 04:30:59,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:30:59,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447667258] [2023-12-19 04:30:59,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447667258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:30:59,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:30:59,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:30:59,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218604654] [2023-12-19 04:30:59,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:30:59,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:30:59,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:30:59,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:30:59,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:30:59,410 INFO L87 Difference]: Start difference. First operand 140607 states and 150310 transitions. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:01,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:01,524 INFO L93 Difference]: Finished difference Result 287608 states and 307656 transitions. [2023-12-19 04:31:01,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:31:01,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 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 642 [2023-12-19 04:31:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:01,712 INFO L225 Difference]: With dead ends: 287608 [2023-12-19 04:31:01,712 INFO L226 Difference]: Without dead ends: 147852 [2023-12-19 04:31:01,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:31:01,783 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 320 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:01,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 252 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:31:01,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147852 states. [2023-12-19 04:31:03,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147852 to 142307. [2023-12-19 04:31:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142307 states, 142306 states have (on average 1.0633353477717031) internal successors, (151319), 142306 states have internal predecessors, (151319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:03,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142307 states to 142307 states and 151319 transitions. [2023-12-19 04:31:03,679 INFO L78 Accepts]: Start accepts. Automaton has 142307 states and 151319 transitions. Word has length 642 [2023-12-19 04:31:03,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:03,680 INFO L495 AbstractCegarLoop]: Abstraction has 142307 states and 151319 transitions. [2023-12-19 04:31:03,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:03,680 INFO L276 IsEmpty]: Start isEmpty. Operand 142307 states and 151319 transitions. [2023-12-19 04:31:03,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2023-12-19 04:31:03,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:03,690 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:31:03,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 04:31:03,690 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:03,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:03,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1994683453, now seen corresponding path program 1 times [2023-12-19 04:31:03,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:03,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764222636] [2023-12-19 04:31:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:03,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1094 backedges. 569 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2023-12-19 04:31:04,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:04,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764222636] [2023-12-19 04:31:04,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764222636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:04,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:04,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:31:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64181549] [2023-12-19 04:31:04,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:04,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:31:04,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:31:04,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:31:04,427 INFO L87 Difference]: Start difference. First operand 142307 states and 151319 transitions. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:07,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:07,150 INFO L93 Difference]: Finished difference Result 309308 states and 328602 transitions. [2023-12-19 04:31:07,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:31:07,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 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 694 [2023-12-19 04:31:07,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:07,334 INFO L225 Difference]: With dead ends: 309308 [2023-12-19 04:31:07,334 INFO L226 Difference]: Without dead ends: 167002 [2023-12-19 04:31:07,598 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 [2023-12-19 04:31:07,599 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 783 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:07,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 147 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 04:31:07,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167002 states. [2023-12-19 04:31:09,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167002 to 142306. [2023-12-19 04:31:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142306 states, 142305 states have (on average 1.063335792839324) internal successors, (151318), 142305 states have internal predecessors, (151318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142306 states to 142306 states and 151318 transitions. [2023-12-19 04:31:09,526 INFO L78 Accepts]: Start accepts. Automaton has 142306 states and 151318 transitions. Word has length 694 [2023-12-19 04:31:09,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:09,527 INFO L495 AbstractCegarLoop]: Abstraction has 142306 states and 151318 transitions. [2023-12-19 04:31:09,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:09,527 INFO L276 IsEmpty]: Start isEmpty. Operand 142306 states and 151318 transitions. [2023-12-19 04:31:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2023-12-19 04:31:09,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:09,543 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:31:09,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 04:31:09,543 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:09,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:09,544 INFO L85 PathProgramCache]: Analyzing trace with hash -903615668, now seen corresponding path program 1 times [2023-12-19 04:31:09,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:09,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680215817] [2023-12-19 04:31:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:09,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 1044 proven. 120 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-19 04:31:10,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:10,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680215817] [2023-12-19 04:31:10,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680215817] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:31:10,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023628568] [2023-12-19 04:31:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:10,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:31:10,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:31:10,727 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:31:10,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 04:31:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:10,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 04:31:10,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:31:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 1044 proven. 120 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-12-19 04:31:11,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:31:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 934 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-19 04:31:11,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023628568] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 04:31:11,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 04:31:11,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-12-19 04:31:11,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14222379] [2023-12-19 04:31:11,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:11,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:31:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:11,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:31:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:31:11,708 INFO L87 Difference]: Start difference. First operand 142306 states and 151318 transitions. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:13,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:13,882 INFO L93 Difference]: Finished difference Result 287992 states and 305974 transitions. [2023-12-19 04:31:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:31:13,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 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 746 [2023-12-19 04:31:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:14,063 INFO L225 Difference]: With dead ends: 287992 [2023-12-19 04:31:14,063 INFO L226 Difference]: Without dead ends: 146112 [2023-12-19 04:31:14,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1494 GetRequests, 1490 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:31:14,148 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 329 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:14,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 286 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:31:14,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146112 states. [2023-12-19 04:31:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146112 to 143548. [2023-12-19 04:31:15,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143548 states, 143547 states have (on average 1.054588392651884) internal successors, (151383), 143547 states have internal predecessors, (151383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143548 states to 143548 states and 151383 transitions. [2023-12-19 04:31:16,018 INFO L78 Accepts]: Start accepts. Automaton has 143548 states and 151383 transitions. Word has length 746 [2023-12-19 04:31:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:16,018 INFO L495 AbstractCegarLoop]: Abstraction has 143548 states and 151383 transitions. [2023-12-19 04:31:16,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:16,018 INFO L276 IsEmpty]: Start isEmpty. Operand 143548 states and 151383 transitions. [2023-12-19 04:31:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-12-19 04:31:16,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:16,037 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:31:16,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 04:31:16,240 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,SelfDestructingSolverStorable23 [2023-12-19 04:31:16,241 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:16,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:16,242 INFO L85 PathProgramCache]: Analyzing trace with hash -483048229, now seen corresponding path program 1 times [2023-12-19 04:31:16,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:16,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759998998] [2023-12-19 04:31:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:16,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1546 backedges. 1034 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-12-19 04:31:17,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:17,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759998998] [2023-12-19 04:31:17,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759998998] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:17,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:17,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:31:17,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590626002] [2023-12-19 04:31:17,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:17,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:31:17,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:17,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:31:17,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:31:17,190 INFO L87 Difference]: Start difference. First operand 143548 states and 151383 transitions. Second operand has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:20,142 INFO L93 Difference]: Finished difference Result 320743 states and 337978 transitions. [2023-12-19 04:31:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:31:20,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 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 753 [2023-12-19 04:31:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:20,382 INFO L225 Difference]: With dead ends: 320743 [2023-12-19 04:31:20,383 INFO L226 Difference]: Without dead ends: 177621 [2023-12-19 04:31:20,452 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 [2023-12-19 04:31:20,452 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 631 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:20,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 204 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 04:31:20,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177621 states. [2023-12-19 04:31:22,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177621 to 152930. [2023-12-19 04:31:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152930 states, 152929 states have (on average 1.0540185314753905) internal successors, (161190), 152929 states have internal predecessors, (161190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:22,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152930 states to 152930 states and 161190 transitions. [2023-12-19 04:31:22,520 INFO L78 Accepts]: Start accepts. Automaton has 152930 states and 161190 transitions. Word has length 753 [2023-12-19 04:31:22,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:22,520 INFO L495 AbstractCegarLoop]: Abstraction has 152930 states and 161190 transitions. [2023-12-19 04:31:22,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:22,521 INFO L276 IsEmpty]: Start isEmpty. Operand 152930 states and 161190 transitions. [2023-12-19 04:31:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2023-12-19 04:31:22,539 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:22,540 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:31:22,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 04:31:22,540 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:22,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:22,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2013696673, now seen corresponding path program 1 times [2023-12-19 04:31:22,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:22,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130990224] [2023-12-19 04:31:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:22,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 585 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 04:31:23,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:23,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130990224] [2023-12-19 04:31:23,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130990224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:23,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:23,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:31:23,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921858849] [2023-12-19 04:31:23,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:23,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:31:23,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:23,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:31:23,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:31:23,790 INFO L87 Difference]: Start difference. First operand 152930 states and 161190 transitions. Second operand has 4 states, 4 states have (on average 187.5) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:26,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:26,612 INFO L93 Difference]: Finished difference Result 326359 states and 343942 transitions. [2023-12-19 04:31:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:31:26,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 187.5) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 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 770 [2023-12-19 04:31:26,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:26,837 INFO L225 Difference]: With dead ends: 326359 [2023-12-19 04:31:26,837 INFO L226 Difference]: Without dead ends: 173855 [2023-12-19 04:31:26,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:31:26,924 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 380 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 2603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:26,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 244 Invalid, 2603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-19 04:31:27,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173855 states. [2023-12-19 04:31:28,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173855 to 163166. [2023-12-19 04:31:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163166 states, 163165 states have (on average 1.0528789875279625) internal successors, (171793), 163165 states have internal predecessors, (171793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:29,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163166 states to 163166 states and 171793 transitions. [2023-12-19 04:31:29,349 INFO L78 Accepts]: Start accepts. Automaton has 163166 states and 171793 transitions. Word has length 770 [2023-12-19 04:31:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:29,349 INFO L495 AbstractCegarLoop]: Abstraction has 163166 states and 171793 transitions. [2023-12-19 04:31:29,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.5) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 163166 states and 171793 transitions. [2023-12-19 04:31:29,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-12-19 04:31:29,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:29,367 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:31:29,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 04:31:29,368 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:29,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:29,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2038786463, now seen corresponding path program 1 times [2023-12-19 04:31:29,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:29,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587164827] [2023-12-19 04:31:29,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:29,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 626 proven. 430 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-19 04:31:30,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587164827] [2023-12-19 04:31:30,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587164827] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:31:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649151425] [2023-12-19 04:31:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:30,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:31:30,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:31:30,863 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:31:30,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 04:31:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:31,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 04:31:31,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:31:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 872 proven. 103 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-19 04:31:32,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:31:34,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 872 proven. 103 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-19 04:31:34,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649151425] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 04:31:34,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 04:31:34,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2023-12-19 04:31:34,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301633521] [2023-12-19 04:31:34,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 04:31:34,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 04:31:34,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:34,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 04:31:34,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-19 04:31:34,261 INFO L87 Difference]: Start difference. First operand 163166 states and 171793 transitions. Second operand has 10 states, 10 states have (on average 162.7) internal successors, (1627), 10 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:46,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:46,769 INFO L93 Difference]: Finished difference Result 373643 states and 392651 transitions. [2023-12-19 04:31:46,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-19 04:31:46,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 162.7) internal successors, (1627), 10 states have internal predecessors, (1627), 0 states have call successors, (0), 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 775 [2023-12-19 04:31:46,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:47,063 INFO L225 Difference]: With dead ends: 373643 [2023-12-19 04:31:47,063 INFO L226 Difference]: Without dead ends: 210903 [2023-12-19 04:31:47,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1565 GetRequests, 1551 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-19 04:31:47,170 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 3488 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 15854 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3488 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 16481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 15854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:47,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3488 Valid, 461 Invalid, 16481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 15854 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-12-19 04:31:47,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210903 states. [2023-12-19 04:31:49,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210903 to 178915. [2023-12-19 04:31:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178915 states, 178914 states have (on average 1.0506835686419174) internal successors, (187982), 178914 states have internal predecessors, (187982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178915 states to 178915 states and 187982 transitions. [2023-12-19 04:31:49,445 INFO L78 Accepts]: Start accepts. Automaton has 178915 states and 187982 transitions. Word has length 775 [2023-12-19 04:31:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:31:49,446 INFO L495 AbstractCegarLoop]: Abstraction has 178915 states and 187982 transitions. [2023-12-19 04:31:49,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 162.7) internal successors, (1627), 10 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 178915 states and 187982 transitions. [2023-12-19 04:31:49,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-12-19 04:31:49,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:31:49,462 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:31:49,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-19 04:31:49,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 04:31:49,663 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:31:49,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:31:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash 369709514, now seen corresponding path program 1 times [2023-12-19 04:31:49,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:31:49,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470188904] [2023-12-19 04:31:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:31:49,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:31:49,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:31:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1348 backedges. 639 proven. 0 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2023-12-19 04:31:49,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:31:49,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470188904] [2023-12-19 04:31:49,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470188904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:31:49,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:31:49,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:31:49,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853204018] [2023-12-19 04:31:49,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:31:49,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:31:49,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:31:49,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:31:49,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:31:49,929 INFO L87 Difference]: Start difference. First operand 178915 states and 187982 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:31:52,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:31:52,238 INFO L93 Difference]: Finished difference Result 359104 states and 377390 transitions. [2023-12-19 04:31:52,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:31:52,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 775 [2023-12-19 04:31:52,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:31:52,497 INFO L225 Difference]: With dead ends: 359104 [2023-12-19 04:31:52,497 INFO L226 Difference]: Without dead ends: 180615 [2023-12-19 04:31:52,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:31:52,620 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 494 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:31:52,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 165 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:31:52,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180615 states.