/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 17:03:21,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 17:03:21,453 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 17:03:21,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 17:03:21,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 17:03:21,481 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 17:03:21,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 17:03:21,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 17:03:21,482 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 17:03:21,482 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 17:03:21,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 17:03:21,483 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 17:03:21,483 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 17:03:21,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 17:03:21,483 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 17:03:21,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 17:03:21,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 17:03:21,484 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 17:03:21,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 17:03:21,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 17:03:21,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 17:03:21,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 17:03:21,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 17:03:21,490 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 17:03:21,490 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 17:03:21,490 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 17:03:21,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 17:03:21,490 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 17:03:21,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 17:03:21,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 17:03:21,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 17:03:21,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 17:03:21,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:03:21,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 17:03:21,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 17:03:21,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 17:03:21,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 17:03:21,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 17:03:21,492 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 17:03:21,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 17:03:21,492 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 17:03:21,492 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 17:03:21,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 17:03:21,493 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 17:03:21,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 17:03:21,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 17:03:21,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 17:03:21,753 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 17:03:21,753 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 17:03:21,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26.c [2023-12-20 17:03:23,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 17:03:23,380 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 17:03:23,381 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label26.c [2023-12-20 17:03:23,418 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45079ddea/7ba7161c6cc24e86bd0937e9212386b4/FLAG2f8dbfe44 [2023-12-20 17:03:23,431 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45079ddea/7ba7161c6cc24e86bd0937e9212386b4 [2023-12-20 17:03:23,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 17:03:23,435 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 17:03:23,436 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 17:03:23,436 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 17:03:23,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 17:03:23,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:03:23" (1/1) ... [2023-12-20 17:03:23,441 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acd9d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:23, skipping insertion in model container [2023-12-20 17:03:23,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 05:03:23" (1/1) ... [2023-12-20 17:03:23,537 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 17:03:23,741 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label26.c[5554,5567] [2023-12-20 17:03:24,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:03:24,399 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 17:03:24,419 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label26.c[5554,5567] [2023-12-20 17:03:24,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 17:03:24,845 INFO L206 MainTranslator]: Completed translation [2023-12-20 17:03:24,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24 WrapperNode [2023-12-20 17:03:24,846 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 17:03:24,847 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 17:03:24,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 17:03:24,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 17:03:24,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24" (1/1) ... [2023-12-20 17:03:24,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24" (1/1) ... [2023-12-20 17:03:25,327 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-20 17:03:25,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 17:03:25,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 17:03:25,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 17:03:25,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 17:03:25,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24" (1/1) ... [2023-12-20 17:03:25,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24" (1/1) ... [2023-12-20 17:03:25,448 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24" (1/1) ... [2023-12-20 17:03:25,611 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 17:03:25,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24" (1/1) ... [2023-12-20 17:03:25,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24" (1/1) ... [2023-12-20 17:03:25,797 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24" (1/1) ... [2023-12-20 17:03:25,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24" (1/1) ... [2023-12-20 17:03:25,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24" (1/1) ... [2023-12-20 17:03:25,855 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24" (1/1) ... [2023-12-20 17:03:25,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 17:03:25,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 17:03:25,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 17:03:25,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 17:03:25,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24" (1/1) ... [2023-12-20 17:03:25,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 17:03:25,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:03:25,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 17:03:25,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 17:03:25,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 17:03:25,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 17:03:25,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 17:03:25,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 17:03:26,064 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 17:03:26,067 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 17:03:30,549 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 17:03:30,613 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 17:03:30,613 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 17:03:30,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:03:30 BoogieIcfgContainer [2023-12-20 17:03:30,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 17:03:30,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 17:03:30,615 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 17:03:30,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 17:03:30,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 05:03:23" (1/3) ... [2023-12-20 17:03:30,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21dbe7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:03:30, skipping insertion in model container [2023-12-20 17:03:30,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 05:03:24" (2/3) ... [2023-12-20 17:03:30,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21dbe7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 05:03:30, skipping insertion in model container [2023-12-20 17:03:30,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 05:03:30" (3/3) ... [2023-12-20 17:03:30,621 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label26.c [2023-12-20 17:03:30,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 17:03:30,633 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 17:03:30,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 17:03:30,682 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;@5052c6d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 17:03:30,682 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 17:03:30,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-20 17:03:30,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:30,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:03:30,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:30,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:30,698 INFO L85 PathProgramCache]: Analyzing trace with hash -571836941, now seen corresponding path program 1 times [2023-12-20 17:03:30,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:30,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338662041] [2023-12-20 17:03:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:30,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:03:30,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:30,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338662041] [2023-12-20 17:03:30,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338662041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:30,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:30,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:03:30,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28112531] [2023-12-20 17:03:30,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:30,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 17:03:30,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:30,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 17:03:30,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:03:30,843 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:30,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:30,902 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-20 17:03:30,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 17:03:30,904 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-20 17:03:30,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:30,917 INFO L225 Difference]: With dead ends: 2071 [2023-12-20 17:03:30,918 INFO L226 Difference]: Without dead ends: 1034 [2023-12-20 17:03:30,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 17:03:30,925 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:30,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 17:03:30,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-20 17:03:31,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-20 17:03:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:31,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-20 17:03:31,016 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 37 [2023-12-20 17:03:31,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:31,017 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-20 17:03:31,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:31,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-20 17:03:31,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-20 17:03:31,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:31,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:03:31,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 17:03:31,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:31,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:31,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1467553427, now seen corresponding path program 1 times [2023-12-20 17:03:31,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:31,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236200406] [2023-12-20 17:03:31,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:31,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:03:31,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:31,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236200406] [2023-12-20 17:03:31,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236200406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:31,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:31,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:03:31,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079627629] [2023-12-20 17:03:31,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:31,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:31,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:31,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:31,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:31,211 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:34,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:34,726 INFO L93 Difference]: Finished difference Result 2931 states and 5350 transitions. [2023-12-20 17:03:34,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:34,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-12-20 17:03:34,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:34,733 INFO L225 Difference]: With dead ends: 2931 [2023-12-20 17:03:34,733 INFO L226 Difference]: Without dead ends: 1898 [2023-12-20 17:03:34,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:34,736 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 977 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 3435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:34,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 594 Invalid, 3435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2875 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 17:03:34,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2023-12-20 17:03:34,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1893. [2023-12-20 17:03:34,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 1.73784355179704) internal successors, (3288), 1892 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:34,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 3288 transitions. [2023-12-20 17:03:34,765 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 3288 transitions. Word has length 37 [2023-12-20 17:03:34,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:34,765 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 3288 transitions. [2023-12-20 17:03:34,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:34,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 3288 transitions. [2023-12-20 17:03:34,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 17:03:34,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:34,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:03:34,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 17:03:34,768 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:34,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:34,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1505282537, now seen corresponding path program 1 times [2023-12-20 17:03:34,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:34,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822707582] [2023-12-20 17:03:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:34,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:03:34,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:34,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822707582] [2023-12-20 17:03:34,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822707582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:34,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:34,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:03:34,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390904510] [2023-12-20 17:03:34,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:34,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:34,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:34,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:34,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:34,914 INFO L87 Difference]: Start difference. First operand 1893 states and 3288 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:38,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:38,370 INFO L93 Difference]: Finished difference Result 5383 states and 9440 transitions. [2023-12-20 17:03:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:38,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2023-12-20 17:03:38,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:38,382 INFO L225 Difference]: With dead ends: 5383 [2023-12-20 17:03:38,382 INFO L226 Difference]: Without dead ends: 3491 [2023-12-20 17:03:38,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:38,389 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:38,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1011 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 17:03:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2023-12-20 17:03:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 3490. [2023-12-20 17:03:38,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 1.5385497277156779) internal successors, (5368), 3489 states have internal predecessors, (5368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 5368 transitions. [2023-12-20 17:03:38,445 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 5368 transitions. Word has length 102 [2023-12-20 17:03:38,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:38,449 INFO L495 AbstractCegarLoop]: Abstraction has 3490 states and 5368 transitions. [2023-12-20 17:03:38,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:38,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 5368 transitions. [2023-12-20 17:03:38,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 17:03:38,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:38,458 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:03:38,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 17:03:38,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:38,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:38,458 INFO L85 PathProgramCache]: Analyzing trace with hash -154031516, now seen corresponding path program 1 times [2023-12-20 17:03:38,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:38,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039231980] [2023-12-20 17:03:38,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:38,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:03:38,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:38,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039231980] [2023-12-20 17:03:38,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039231980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:38,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:38,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:03:38,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745285861] [2023-12-20 17:03:38,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:38,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:38,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:38,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:38,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:38,630 INFO L87 Difference]: Start difference. First operand 3490 states and 5368 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:41,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:41,817 INFO L93 Difference]: Finished difference Result 10168 states and 15699 transitions. [2023-12-20 17:03:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:41,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 17:03:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:41,836 INFO L225 Difference]: With dead ends: 10168 [2023-12-20 17:03:41,836 INFO L226 Difference]: Without dead ends: 6679 [2023-12-20 17:03:41,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:41,852 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:41,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 845 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 17:03:41,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6679 states. [2023-12-20 17:03:41,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6679 to 6668. [2023-12-20 17:03:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 6667 states have (on average 1.3752812359382032) internal successors, (9169), 6667 states have internal predecessors, (9169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:41,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 9169 transitions. [2023-12-20 17:03:41,949 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 9169 transitions. Word has length 104 [2023-12-20 17:03:41,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:41,951 INFO L495 AbstractCegarLoop]: Abstraction has 6668 states and 9169 transitions. [2023-12-20 17:03:41,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 9169 transitions. [2023-12-20 17:03:41,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-20 17:03:41,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:41,955 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:03:41,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 17:03:41,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:41,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:41,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1201099542, now seen corresponding path program 1 times [2023-12-20 17:03:41,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:41,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859149768] [2023-12-20 17:03:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:41,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:03:42,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:42,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859149768] [2023-12-20 17:03:42,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859149768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:42,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:42,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:03:42,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560173192] [2023-12-20 17:03:42,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:42,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:42,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:42,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:42,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:42,334 INFO L87 Difference]: Start difference. First operand 6668 states and 9169 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:45,067 INFO L93 Difference]: Finished difference Result 14122 states and 19184 transitions. [2023-12-20 17:03:45,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-12-20 17:03:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:45,087 INFO L225 Difference]: With dead ends: 14122 [2023-12-20 17:03:45,087 INFO L226 Difference]: Without dead ends: 7455 [2023-12-20 17:03:45,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:45,097 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:45,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1213 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 17:03:45,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2023-12-20 17:03:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 7455. [2023-12-20 17:03:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7455 states, 7454 states have (on average 1.3363294875234772) internal successors, (9961), 7454 states have internal predecessors, (9961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:45,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7455 states to 7455 states and 9961 transitions. [2023-12-20 17:03:45,207 INFO L78 Accepts]: Start accepts. Automaton has 7455 states and 9961 transitions. Word has length 148 [2023-12-20 17:03:45,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:45,208 INFO L495 AbstractCegarLoop]: Abstraction has 7455 states and 9961 transitions. [2023-12-20 17:03:45,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:45,209 INFO L276 IsEmpty]: Start isEmpty. Operand 7455 states and 9961 transitions. [2023-12-20 17:03:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 17:03:45,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:45,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:03:45,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 17:03:45,211 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:45,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:45,211 INFO L85 PathProgramCache]: Analyzing trace with hash -689302484, now seen corresponding path program 1 times [2023-12-20 17:03:45,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:45,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902212538] [2023-12-20 17:03:45,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:45,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:03:45,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:45,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902212538] [2023-12-20 17:03:45,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902212538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:45,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:45,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:03:45,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962348841] [2023-12-20 17:03:45,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:45,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:45,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:45,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:45,326 INFO L87 Difference]: Start difference. First operand 7455 states and 9961 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:48,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:48,199 INFO L93 Difference]: Finished difference Result 20415 states and 27797 transitions. [2023-12-20 17:03:48,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:48,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2023-12-20 17:03:48,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:48,230 INFO L225 Difference]: With dead ends: 20415 [2023-12-20 17:03:48,230 INFO L226 Difference]: Without dead ends: 13748 [2023-12-20 17:03:48,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:48,239 INFO L413 NwaCegarLoop]: 1860 mSDtfsCounter, 896 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:48,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 1999 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:03:48,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13748 states. [2023-12-20 17:03:48,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13748 to 13743. [2023-12-20 17:03:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13743 states, 13742 states have (on average 1.2573133459467327) internal successors, (17278), 13742 states have internal predecessors, (17278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:48,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13743 states to 13743 states and 17278 transitions. [2023-12-20 17:03:48,419 INFO L78 Accepts]: Start accepts. Automaton has 13743 states and 17278 transitions. Word has length 162 [2023-12-20 17:03:48,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:48,420 INFO L495 AbstractCegarLoop]: Abstraction has 13743 states and 17278 transitions. [2023-12-20 17:03:48,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:48,421 INFO L276 IsEmpty]: Start isEmpty. Operand 13743 states and 17278 transitions. [2023-12-20 17:03:48,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-20 17:03:48,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:48,423 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:03:48,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 17:03:48,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:48,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:48,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1266973960, now seen corresponding path program 1 times [2023-12-20 17:03:48,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:48,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565577739] [2023-12-20 17:03:48,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:48,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-20 17:03:48,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:48,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565577739] [2023-12-20 17:03:48,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565577739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:48,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:48,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:03:48,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072950211] [2023-12-20 17:03:48,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:48,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:48,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:48,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:48,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:48,634 INFO L87 Difference]: Start difference. First operand 13743 states and 17278 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:51,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:51,026 INFO L93 Difference]: Finished difference Result 23551 states and 30331 transitions. [2023-12-20 17:03:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:51,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 249 [2023-12-20 17:03:51,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:51,062 INFO L225 Difference]: With dead ends: 23551 [2023-12-20 17:03:51,063 INFO L226 Difference]: Without dead ends: 12965 [2023-12-20 17:03:51,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:51,098 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 726 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:51,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1187 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2701 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:03:51,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12965 states. [2023-12-20 17:03:51,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12965 to 12956. [2023-12-20 17:03:51,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12956 states, 12955 states have (on average 1.2713238131995368) internal successors, (16470), 12955 states have internal predecessors, (16470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:51,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12956 states to 12956 states and 16470 transitions. [2023-12-20 17:03:51,289 INFO L78 Accepts]: Start accepts. Automaton has 12956 states and 16470 transitions. Word has length 249 [2023-12-20 17:03:51,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:51,290 INFO L495 AbstractCegarLoop]: Abstraction has 12956 states and 16470 transitions. [2023-12-20 17:03:51,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:51,291 INFO L276 IsEmpty]: Start isEmpty. Operand 12956 states and 16470 transitions. [2023-12-20 17:03:51,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-12-20 17:03:51,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:51,294 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:03:51,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 17:03:51,294 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:51,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:51,295 INFO L85 PathProgramCache]: Analyzing trace with hash -277234941, now seen corresponding path program 1 times [2023-12-20 17:03:51,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:51,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538489395] [2023-12-20 17:03:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:51,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-20 17:03:51,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:51,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538489395] [2023-12-20 17:03:51,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538489395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:51,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:51,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:03:51,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067597705] [2023-12-20 17:03:51,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:51,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:51,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:51,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:51,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:51,463 INFO L87 Difference]: Start difference. First operand 12956 states and 16470 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:54,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:54,742 INFO L93 Difference]: Finished difference Result 36152 states and 46428 transitions. [2023-12-20 17:03:54,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:54,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 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 273 [2023-12-20 17:03:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:54,778 INFO L225 Difference]: With dead ends: 36152 [2023-12-20 17:03:54,778 INFO L226 Difference]: Without dead ends: 23984 [2023-12-20 17:03:54,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:54,788 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 889 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 3297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:54,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 889 Invalid, 3297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 17:03:54,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23984 states. [2023-12-20 17:03:55,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23984 to 23188. [2023-12-20 17:03:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23188 states, 23187 states have (on average 1.2129641609522577) internal successors, (28125), 23187 states have internal predecessors, (28125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:55,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23188 states to 23188 states and 28125 transitions. [2023-12-20 17:03:55,098 INFO L78 Accepts]: Start accepts. Automaton has 23188 states and 28125 transitions. Word has length 273 [2023-12-20 17:03:55,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:55,098 INFO L495 AbstractCegarLoop]: Abstraction has 23188 states and 28125 transitions. [2023-12-20 17:03:55,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:55,098 INFO L276 IsEmpty]: Start isEmpty. Operand 23188 states and 28125 transitions. [2023-12-20 17:03:55,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-12-20 17:03:55,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:55,102 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:03:55,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 17:03:55,102 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:55,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:55,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1435088816, now seen corresponding path program 1 times [2023-12-20 17:03:55,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:55,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741288284] [2023-12-20 17:03:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:55,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 71 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:03:55,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:55,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741288284] [2023-12-20 17:03:55,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741288284] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:03:55,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119424615] [2023-12-20 17:03:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:55,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:03:55,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:03:55,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:03:56,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 17:03:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:56,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:03:56,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:03:56,204 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-20 17:03:56,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:03:56,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119424615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:56,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:03:56,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:03:56,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824118023] [2023-12-20 17:03:56,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:56,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:56,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:56,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:56,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:03:56,206 INFO L87 Difference]: Start difference. First operand 23188 states and 28125 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:59,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:03:59,200 INFO L93 Difference]: Finished difference Result 45586 states and 55456 transitions. [2023-12-20 17:03:59,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:03:59,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 278 [2023-12-20 17:03:59,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:03:59,231 INFO L225 Difference]: With dead ends: 45586 [2023-12-20 17:03:59,231 INFO L226 Difference]: Without dead ends: 23186 [2023-12-20 17:03:59,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:03:59,246 INFO L413 NwaCegarLoop]: 1359 mSDtfsCounter, 1169 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:03:59,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 1441 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:03:59,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23186 states. [2023-12-20 17:03:59,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23186 to 23185. [2023-12-20 17:03:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23185 states, 23184 states have (on average 1.1656746031746033) internal successors, (27025), 23184 states have internal predecessors, (27025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23185 states to 23185 states and 27025 transitions. [2023-12-20 17:03:59,537 INFO L78 Accepts]: Start accepts. Automaton has 23185 states and 27025 transitions. Word has length 278 [2023-12-20 17:03:59,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:03:59,538 INFO L495 AbstractCegarLoop]: Abstraction has 23185 states and 27025 transitions. [2023-12-20 17:03:59,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:03:59,538 INFO L276 IsEmpty]: Start isEmpty. Operand 23185 states and 27025 transitions. [2023-12-20 17:03:59,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-20 17:03:59,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:03:59,542 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:03:59,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 17:03:59,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:03:59,749 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:03:59,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:03:59,749 INFO L85 PathProgramCache]: Analyzing trace with hash -912718355, now seen corresponding path program 1 times [2023-12-20 17:03:59,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:03:59,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575363306] [2023-12-20 17:03:59,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:03:59,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:03:59,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:03:59,922 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-20 17:03:59,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:03:59,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575363306] [2023-12-20 17:03:59,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575363306] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:03:59,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:03:59,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:03:59,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803060537] [2023-12-20 17:03:59,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:03:59,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:03:59,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:03:59,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:03:59,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:03:59,924 INFO L87 Difference]: Start difference. First operand 23185 states and 27025 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:03,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:03,346 INFO L93 Difference]: Finished difference Result 57395 states and 67688 transitions. [2023-12-20 17:04:03,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:03,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 328 [2023-12-20 17:04:03,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:03,386 INFO L225 Difference]: With dead ends: 57395 [2023-12-20 17:04:03,387 INFO L226 Difference]: Without dead ends: 34998 [2023-12-20 17:04:03,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:04:03,407 INFO L413 NwaCegarLoop]: 1801 mSDtfsCounter, 825 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 3272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:03,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1943 Invalid, 3272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-20 17:04:03,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34998 states. [2023-12-20 17:04:03,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34998 to 34207. [2023-12-20 17:04:03,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34207 states, 34206 states have (on average 1.1322574986844414) internal successors, (38730), 34206 states have internal predecessors, (38730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:03,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34207 states to 34207 states and 38730 transitions. [2023-12-20 17:04:03,906 INFO L78 Accepts]: Start accepts. Automaton has 34207 states and 38730 transitions. Word has length 328 [2023-12-20 17:04:03,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:03,906 INFO L495 AbstractCegarLoop]: Abstraction has 34207 states and 38730 transitions. [2023-12-20 17:04:03,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:03,906 INFO L276 IsEmpty]: Start isEmpty. Operand 34207 states and 38730 transitions. [2023-12-20 17:04:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-12-20 17:04:03,911 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:03,912 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:04:03,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 17:04:03,913 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:03,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:03,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1985563540, now seen corresponding path program 1 times [2023-12-20 17:04:03,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:03,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589668590] [2023-12-20 17:04:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:03,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 200 proven. 113 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-20 17:04:04,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:04,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589668590] [2023-12-20 17:04:04,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589668590] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:04:04,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638654623] [2023-12-20 17:04:04,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:04,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:04:04,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:04:04,784 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:04:04,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 17:04:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:05,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:04:05,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:04:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-20 17:04:05,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:04:05,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638654623] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:05,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:04:05,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:04:05,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850887811] [2023-12-20 17:04:05,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:05,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:05,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:05,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:05,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:05,177 INFO L87 Difference]: Start difference. First operand 34207 states and 38730 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:07,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:07,755 INFO L93 Difference]: Finished difference Result 67617 states and 76659 transitions. [2023-12-20 17:04:07,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:07,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 343 [2023-12-20 17:04:07,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:07,796 INFO L225 Difference]: With dead ends: 67617 [2023-12-20 17:04:07,796 INFO L226 Difference]: Without dead ends: 34198 [2023-12-20 17:04:07,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:07,820 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1075 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:07,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 812 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:04:07,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34198 states. [2023-12-20 17:04:08,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34198 to 34197. [2023-12-20 17:04:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34197 states, 34196 states have (on average 1.096707217218388) internal successors, (37503), 34196 states have internal predecessors, (37503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:08,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34197 states to 34197 states and 37503 transitions. [2023-12-20 17:04:08,146 INFO L78 Accepts]: Start accepts. Automaton has 34197 states and 37503 transitions. Word has length 343 [2023-12-20 17:04:08,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:08,147 INFO L495 AbstractCegarLoop]: Abstraction has 34197 states and 37503 transitions. [2023-12-20 17:04:08,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 34197 states and 37503 transitions. [2023-12-20 17:04:08,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-20 17:04:08,152 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:08,152 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:04:08,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 17:04:08,357 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,SelfDestructingSolverStorable10 [2023-12-20 17:04:08,358 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:08,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:08,358 INFO L85 PathProgramCache]: Analyzing trace with hash -416361814, now seen corresponding path program 1 times [2023-12-20 17:04:08,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:08,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987372010] [2023-12-20 17:04:08,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:08,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-12-20 17:04:08,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:08,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987372010] [2023-12-20 17:04:08,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987372010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:08,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:04:08,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:04:08,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704084790] [2023-12-20 17:04:08,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:08,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:04:08,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:08,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:04:08,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:04:08,671 INFO L87 Difference]: Start difference. First operand 34197 states and 37503 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:14,495 INFO L93 Difference]: Finished difference Result 119761 states and 131662 transitions. [2023-12-20 17:04:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:04:14,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 [2023-12-20 17:04:14,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:14,593 INFO L225 Difference]: With dead ends: 119761 [2023-12-20 17:04:14,593 INFO L226 Difference]: Without dead ends: 86352 [2023-12-20 17:04:14,615 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 [2023-12-20 17:04:14,615 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 1704 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 6674 mSolverCounterSat, 1023 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 7697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1023 IncrementalHoareTripleChecker+Valid, 6674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:14,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 825 Invalid, 7697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1023 Valid, 6674 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-20 17:04:14,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86352 states. [2023-12-20 17:04:15,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86352 to 83861. [2023-12-20 17:04:15,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83861 states, 83860 states have (on average 1.0878249463391367) internal successors, (91225), 83860 states have internal predecessors, (91225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83861 states to 83861 states and 91225 transitions. [2023-12-20 17:04:15,841 INFO L78 Accepts]: Start accepts. Automaton has 83861 states and 91225 transitions. Word has length 385 [2023-12-20 17:04:15,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:15,841 INFO L495 AbstractCegarLoop]: Abstraction has 83861 states and 91225 transitions. [2023-12-20 17:04:15,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 83861 states and 91225 transitions. [2023-12-20 17:04:15,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-12-20 17:04:15,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:15,864 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-20 17:04:15,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 17:04:15,864 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:15,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:15,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1486758883, now seen corresponding path program 1 times [2023-12-20 17:04:15,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:15,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170316568] [2023-12-20 17:04:15,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:15,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:16,875 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 284 proven. 113 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-20 17:04:16,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170316568] [2023-12-20 17:04:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170316568] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:04:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972694685] [2023-12-20 17:04:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:16,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:04:16,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:04:16,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:04:16,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 17:04:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:17,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:04:17,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:04:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-20 17:04:17,106 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:04:17,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972694685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:17,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:04:17,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:04:17,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216090016] [2023-12-20 17:04:17,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:17,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:17,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:17,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:17,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:17,110 INFO L87 Difference]: Start difference. First operand 83861 states and 91225 transitions. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:20,708 INFO L93 Difference]: Finished difference Result 165344 states and 181500 transitions. [2023-12-20 17:04:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:20,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 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 [2023-12-20 17:04:20,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:20,831 INFO L225 Difference]: With dead ends: 165344 [2023-12-20 17:04:20,831 INFO L226 Difference]: Without dead ends: 93299 [2023-12-20 17:04:20,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:20,892 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 1214 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:20,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 405 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 2263 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 17:04:20,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93299 states. [2023-12-20 17:04:22,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93299 to 93299. [2023-12-20 17:04:22,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93299 states, 93298 states have (on average 1.0913738772535317) internal successors, (101823), 93298 states have internal predecessors, (101823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93299 states to 93299 states and 101823 transitions. [2023-12-20 17:04:22,392 INFO L78 Accepts]: Start accepts. Automaton has 93299 states and 101823 transitions. Word has length 385 [2023-12-20 17:04:22,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:22,395 INFO L495 AbstractCegarLoop]: Abstraction has 93299 states and 101823 transitions. [2023-12-20 17:04:22,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:22,395 INFO L276 IsEmpty]: Start isEmpty. Operand 93299 states and 101823 transitions. [2023-12-20 17:04:22,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-12-20 17:04:22,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:22,404 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:04:22,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 17:04:22,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:04:22,612 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:22,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:22,613 INFO L85 PathProgramCache]: Analyzing trace with hash -525655524, now seen corresponding path program 1 times [2023-12-20 17:04:22,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:22,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812903895] [2023-12-20 17:04:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:22,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 17:04:23,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:23,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812903895] [2023-12-20 17:04:23,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812903895] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:23,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:04:23,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:04:23,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999971873] [2023-12-20 17:04:23,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:23,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:23,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:23,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:23,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:04:23,512 INFO L87 Difference]: Start difference. First operand 93299 states and 101823 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:27,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:27,065 INFO L93 Difference]: Finished difference Result 210231 states and 229008 transitions. [2023-12-20 17:04:27,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:27,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 418 [2023-12-20 17:04:27,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:27,251 INFO L225 Difference]: With dead ends: 210231 [2023-12-20 17:04:27,251 INFO L226 Difference]: Without dead ends: 117720 [2023-12-20 17:04:27,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:04:27,305 INFO L413 NwaCegarLoop]: 980 mSDtfsCounter, 796 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:27,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1121 Invalid, 2844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:04:27,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117720 states. [2023-12-20 17:04:28,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117720 to 115337. [2023-12-20 17:04:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115337 states, 115336 states have (on average 1.0818391482277867) internal successors, (124775), 115336 states have internal predecessors, (124775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:29,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115337 states to 115337 states and 124775 transitions. [2023-12-20 17:04:29,018 INFO L78 Accepts]: Start accepts. Automaton has 115337 states and 124775 transitions. Word has length 418 [2023-12-20 17:04:29,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:29,018 INFO L495 AbstractCegarLoop]: Abstraction has 115337 states and 124775 transitions. [2023-12-20 17:04:29,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:29,019 INFO L276 IsEmpty]: Start isEmpty. Operand 115337 states and 124775 transitions. [2023-12-20 17:04:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2023-12-20 17:04:29,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:29,025 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:04:29,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 17:04:29,025 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:29,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:29,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1376195614, now seen corresponding path program 1 times [2023-12-20 17:04:29,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:29,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363916189] [2023-12-20 17:04:29,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:29,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 369 proven. 113 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-12-20 17:04:29,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:29,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363916189] [2023-12-20 17:04:29,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363916189] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:04:29,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452195204] [2023-12-20 17:04:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:29,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:04:29,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:04:29,955 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:04:29,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 17:04:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:30,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:04:30,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:04:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2023-12-20 17:04:30,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:04:30,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452195204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:30,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:04:30,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:04:30,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736077930] [2023-12-20 17:04:30,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:30,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:30,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:30,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:30,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:30,164 INFO L87 Difference]: Start difference. First operand 115337 states and 124775 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:33,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:33,798 INFO L93 Difference]: Finished difference Result 231464 states and 250349 transitions. [2023-12-20 17:04:33,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:33,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 428 [2023-12-20 17:04:33,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:34,031 INFO L225 Difference]: With dead ends: 231464 [2023-12-20 17:04:34,031 INFO L226 Difference]: Without dead ends: 116915 [2023-12-20 17:04:34,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:34,121 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 1000 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2483 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:34,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 1470 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2483 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:04:34,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116915 states. [2023-12-20 17:04:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116915 to 115326. [2023-12-20 17:04:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115326 states, 115325 states have (on average 1.0682852807283763) internal successors, (123200), 115325 states have internal predecessors, (123200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115326 states to 115326 states and 123200 transitions. [2023-12-20 17:04:35,587 INFO L78 Accepts]: Start accepts. Automaton has 115326 states and 123200 transitions. Word has length 428 [2023-12-20 17:04:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:35,588 INFO L495 AbstractCegarLoop]: Abstraction has 115326 states and 123200 transitions. [2023-12-20 17:04:35,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:35,588 INFO L276 IsEmpty]: Start isEmpty. Operand 115326 states and 123200 transitions. [2023-12-20 17:04:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2023-12-20 17:04:35,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:35,594 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:04:35,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 17:04:35,799 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,SelfDestructingSolverStorable14 [2023-12-20 17:04:35,800 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:35,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash -36153771, now seen corresponding path program 1 times [2023-12-20 17:04:35,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:35,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443713432] [2023-12-20 17:04:35,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:35,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:37,203 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 405 proven. 113 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-12-20 17:04:37,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:37,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443713432] [2023-12-20 17:04:37,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443713432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:04:37,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336012280] [2023-12-20 17:04:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:37,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:04:37,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:04:37,217 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:04:37,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 17:04:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:37,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:04:37,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:04:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-12-20 17:04:37,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:04:37,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336012280] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:37,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:04:37,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:04:37,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396329415] [2023-12-20 17:04:37,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:37,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:37,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:37,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:37,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:37,445 INFO L87 Difference]: Start difference. First operand 115326 states and 123200 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:40,956 INFO L93 Difference]: Finished difference Result 254269 states and 272378 transitions. [2023-12-20 17:04:40,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:40,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 446 [2023-12-20 17:04:40,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:41,149 INFO L225 Difference]: With dead ends: 254269 [2023-12-20 17:04:41,149 INFO L226 Difference]: Without dead ends: 139731 [2023-12-20 17:04:41,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:41,176 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 843 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:41,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1759 Invalid, 3001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 17:04:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139731 states. [2023-12-20 17:04:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139731 to 137360. [2023-12-20 17:04:42,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137360 states, 137359 states have (on average 1.0682372469222985) internal successors, (146732), 137359 states have internal predecessors, (146732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:42,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137360 states to 137360 states and 146732 transitions. [2023-12-20 17:04:42,941 INFO L78 Accepts]: Start accepts. Automaton has 137360 states and 146732 transitions. Word has length 446 [2023-12-20 17:04:42,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:42,942 INFO L495 AbstractCegarLoop]: Abstraction has 137360 states and 146732 transitions. [2023-12-20 17:04:42,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:42,942 INFO L276 IsEmpty]: Start isEmpty. Operand 137360 states and 146732 transitions. [2023-12-20 17:04:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-12-20 17:04:42,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:42,953 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:04:42,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 17:04:43,158 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,SelfDestructingSolverStorable15 [2023-12-20 17:04:43,159 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:43,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash -24677174, now seen corresponding path program 1 times [2023-12-20 17:04:43,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:43,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935523518] [2023-12-20 17:04:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:43,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 473 proven. 113 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-20 17:04:44,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:44,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935523518] [2023-12-20 17:04:44,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935523518] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:04:44,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191923557] [2023-12-20 17:04:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:44,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:04:44,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:04:44,461 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:04:44,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 17:04:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:44,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 17:04:44,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:04:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-12-20 17:04:44,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:04:44,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191923557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:44,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:04:44,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-20 17:04:44,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84731743] [2023-12-20 17:04:44,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:44,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:44,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:44,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:44,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:44,791 INFO L87 Difference]: Start difference. First operand 137360 states and 146732 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:47,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:47,766 INFO L93 Difference]: Finished difference Result 275491 states and 294218 transitions. [2023-12-20 17:04:47,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:47,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 483 [2023-12-20 17:04:47,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:47,945 INFO L225 Difference]: With dead ends: 275491 [2023-12-20 17:04:47,945 INFO L226 Difference]: Without dead ends: 138919 [2023-12-20 17:04:48,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-20 17:04:48,002 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 972 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:48,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 456 Invalid, 3017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:04:48,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138919 states. [2023-12-20 17:04:49,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138919 to 137330. [2023-12-20 17:04:49,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137330 states, 137329 states have (on average 1.0585892273299886) internal successors, (145375), 137329 states have internal predecessors, (145375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:49,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137330 states to 137330 states and 145375 transitions. [2023-12-20 17:04:49,773 INFO L78 Accepts]: Start accepts. Automaton has 137330 states and 145375 transitions. Word has length 483 [2023-12-20 17:04:49,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:49,773 INFO L495 AbstractCegarLoop]: Abstraction has 137330 states and 145375 transitions. [2023-12-20 17:04:49,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 137330 states and 145375 transitions. [2023-12-20 17:04:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2023-12-20 17:04:49,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:49,789 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:04:49,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 17:04:49,994 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,SelfDestructingSolverStorable16 [2023-12-20 17:04:49,995 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:49,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1261267387, now seen corresponding path program 1 times [2023-12-20 17:04:49,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:49,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959464912] [2023-12-20 17:04:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:49,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 734 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-12-20 17:04:50,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:50,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959464912] [2023-12-20 17:04:50,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959464912] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:50,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:04:50,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:04:50,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405750793] [2023-12-20 17:04:50,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:50,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:04:50,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:50,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:04:50,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:04:50,455 INFO L87 Difference]: Start difference. First operand 137330 states and 145375 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:54,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:04:54,052 INFO L93 Difference]: Finished difference Result 261280 states and 277099 transitions. [2023-12-20 17:04:54,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:04:54,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 545 [2023-12-20 17:04:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:04:54,234 INFO L225 Difference]: With dead ends: 261280 [2023-12-20 17:04:54,234 INFO L226 Difference]: Without dead ends: 138123 [2023-12-20 17:04:54,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:04:54,288 INFO L413 NwaCegarLoop]: 1762 mSDtfsCounter, 722 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:04:54,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1889 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:04:54,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138123 states. [2023-12-20 17:04:55,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138123 to 138118. [2023-12-20 17:04:55,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138118 states, 138117 states have (on average 1.0585445672871552) internal successors, (146203), 138117 states have internal predecessors, (146203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:56,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138118 states to 138118 states and 146203 transitions. [2023-12-20 17:04:56,077 INFO L78 Accepts]: Start accepts. Automaton has 138118 states and 146203 transitions. Word has length 545 [2023-12-20 17:04:56,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:04:56,077 INFO L495 AbstractCegarLoop]: Abstraction has 138118 states and 146203 transitions. [2023-12-20 17:04:56,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:04:56,078 INFO L276 IsEmpty]: Start isEmpty. Operand 138118 states and 146203 transitions. [2023-12-20 17:04:56,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2023-12-20 17:04:56,101 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:04:56,101 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 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] [2023-12-20 17:04:56,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 17:04:56,102 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:04:56,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:04:56,102 INFO L85 PathProgramCache]: Analyzing trace with hash -291360255, now seen corresponding path program 1 times [2023-12-20 17:04:56,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:04:56,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607189026] [2023-12-20 17:04:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:04:56,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:04:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:04:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2023-12-20 17:04:56,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:04:56,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607189026] [2023-12-20 17:04:56,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607189026] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:04:56,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:04:56,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:04:56,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17088849] [2023-12-20 17:04:56,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:04:56,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 17:04:56,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:04:56,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 17:04:56,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 17:04:56,784 INFO L87 Difference]: Start difference. First operand 138118 states and 146203 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:05:02,233 INFO L93 Difference]: Finished difference Result 324387 states and 343249 transitions. [2023-12-20 17:05:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 17:05:02,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 547 [2023-12-20 17:05:02,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:05:02,688 INFO L225 Difference]: With dead ends: 324387 [2023-12-20 17:05:02,688 INFO L226 Difference]: Without dead ends: 187057 [2023-12-20 17:05:02,760 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 [2023-12-20 17:05:02,762 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 1663 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 5692 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 6424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 5692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-20 17:05:02,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 763 Invalid, 6424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [732 Valid, 5692 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-20 17:05:02,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187057 states. [2023-12-20 17:05:04,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187057 to 182230. [2023-12-20 17:05:04,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182230 states, 182229 states have (on average 1.0578283368728358) internal successors, (192767), 182229 states have internal predecessors, (192767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:05,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182230 states to 182230 states and 192767 transitions. [2023-12-20 17:05:05,309 INFO L78 Accepts]: Start accepts. Automaton has 182230 states and 192767 transitions. Word has length 547 [2023-12-20 17:05:05,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:05:05,310 INFO L495 AbstractCegarLoop]: Abstraction has 182230 states and 192767 transitions. [2023-12-20 17:05:05,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 182230 states and 192767 transitions. [2023-12-20 17:05:05,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2023-12-20 17:05:05,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:05:05,331 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-12-20 17:05:05,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 17:05:05,331 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:05:05,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:05:05,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1804778951, now seen corresponding path program 1 times [2023-12-20 17:05:05,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:05:05,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490777195] [2023-12-20 17:05:05,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:05,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:05:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 343 proven. 110 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-20 17:05:07,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:05:07,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490777195] [2023-12-20 17:05:07,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490777195] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:05:07,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888242573] [2023-12-20 17:05:07,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:07,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:05:07,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:05:07,120 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:05:07,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 17:05:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:07,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 17:05:07,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:05:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-12-20 17:05:08,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 17:05:08,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888242573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:05:08,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 17:05:08,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-20 17:05:08,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628595796] [2023-12-20 17:05:08,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:05:08,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:05:08,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:05:08,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:05:08,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:05:08,169 INFO L87 Difference]: Start difference. First operand 182230 states and 192767 transitions. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 2 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:11,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:05:11,036 INFO L93 Difference]: Finished difference Result 355023 states and 375962 transitions. [2023-12-20 17:05:11,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:05:11,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 2 states have internal predecessors, (400), 0 states have call successors, (0), 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 558 [2023-12-20 17:05:11,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:05:11,285 INFO L225 Difference]: With dead ends: 355023 [2023-12-20 17:05:11,285 INFO L226 Difference]: Without dead ends: 186176 [2023-12-20 17:05:11,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-20 17:05:11,358 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 543 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 17:05:11,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1093 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 17:05:11,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186176 states. [2023-12-20 17:05:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186176 to 184592. [2023-12-20 17:05:13,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184592 states, 184591 states have (on average 1.052689459399429) internal successors, (194317), 184591 states have internal predecessors, (194317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:13,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184592 states to 184592 states and 194317 transitions. [2023-12-20 17:05:13,573 INFO L78 Accepts]: Start accepts. Automaton has 184592 states and 194317 transitions. Word has length 558 [2023-12-20 17:05:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:05:13,574 INFO L495 AbstractCegarLoop]: Abstraction has 184592 states and 194317 transitions. [2023-12-20 17:05:13,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 2 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 184592 states and 194317 transitions. [2023-12-20 17:05:13,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2023-12-20 17:05:13,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:05:13,582 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:05:13,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 17:05:13,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:05:13,783 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:05:13,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:05:13,784 INFO L85 PathProgramCache]: Analyzing trace with hash -816365217, now seen corresponding path program 1 times [2023-12-20 17:05:13,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:05:13,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679416624] [2023-12-20 17:05:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:13,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:05:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2023-12-20 17:05:14,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:05:14,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679416624] [2023-12-20 17:05:14,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679416624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:05:14,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:05:14,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:05:14,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658948096] [2023-12-20 17:05:14,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:05:14,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:05:14,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:05:14,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:05:14,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:14,317 INFO L87 Difference]: Start difference. First operand 184592 states and 194317 transitions. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:05:18,355 INFO L93 Difference]: Finished difference Result 395935 states and 417234 transitions. [2023-12-20 17:05:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:05:18,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 690 [2023-12-20 17:05:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:05:18,671 INFO L225 Difference]: With dead ends: 395935 [2023-12-20 17:05:18,671 INFO L226 Difference]: Without dead ends: 226303 [2023-12-20 17:05:18,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:18,761 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 962 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 668 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-20 17:05:18,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 538 Invalid, 3179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [668 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-20 17:05:18,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226303 states. [2023-12-20 17:05:20,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226303 to 171197. [2023-12-20 17:05:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171197 states, 171196 states have (on average 1.0493469473585832) internal successors, (179644), 171196 states have internal predecessors, (179644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171197 states to 171197 states and 179644 transitions. [2023-12-20 17:05:21,434 INFO L78 Accepts]: Start accepts. Automaton has 171197 states and 179644 transitions. Word has length 690 [2023-12-20 17:05:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:05:21,434 INFO L495 AbstractCegarLoop]: Abstraction has 171197 states and 179644 transitions. [2023-12-20 17:05:21,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:21,434 INFO L276 IsEmpty]: Start isEmpty. Operand 171197 states and 179644 transitions. [2023-12-20 17:05:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-12-20 17:05:21,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:05:21,447 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:05:21,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 17:05:21,448 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:05:21,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:05:21,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1140791284, now seen corresponding path program 1 times [2023-12-20 17:05:21,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:05:21,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674565784] [2023-12-20 17:05:21,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:21,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:05:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2023-12-20 17:05:22,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:05:22,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674565784] [2023-12-20 17:05:22,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674565784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:05:22,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:05:22,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:05:22,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107252553] [2023-12-20 17:05:22,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:05:22,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:05:22,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:05:22,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:05:22,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:22,006 INFO L87 Difference]: Start difference. First operand 171197 states and 179644 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:25,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:05:25,767 INFO L93 Difference]: Finished difference Result 391300 states and 410833 transitions. [2023-12-20 17:05:25,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:05:25,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 769 [2023-12-20 17:05:25,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:05:26,112 INFO L225 Difference]: With dead ends: 391300 [2023-12-20 17:05:26,112 INFO L226 Difference]: Without dead ends: 220891 [2023-12-20 17:05:26,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:26,186 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 891 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 3046 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 3422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 3046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:05:26,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 869 Invalid, 3422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 3046 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:05:26,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220891 states. [2023-12-20 17:05:28,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220891 to 216875. [2023-12-20 17:05:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216875 states, 216874 states have (on average 1.047557567988786) internal successors, (227188), 216874 states have internal predecessors, (227188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:29,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216875 states to 216875 states and 227188 transitions. [2023-12-20 17:05:29,095 INFO L78 Accepts]: Start accepts. Automaton has 216875 states and 227188 transitions. Word has length 769 [2023-12-20 17:05:29,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:05:29,096 INFO L495 AbstractCegarLoop]: Abstraction has 216875 states and 227188 transitions. [2023-12-20 17:05:29,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:29,096 INFO L276 IsEmpty]: Start isEmpty. Operand 216875 states and 227188 transitions. [2023-12-20 17:05:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 808 [2023-12-20 17:05:29,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:05:29,115 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:05:29,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 17:05:29,115 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:05:29,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:05:29,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1318100281, now seen corresponding path program 1 times [2023-12-20 17:05:29,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:05:29,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747850428] [2023-12-20 17:05:29,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:29,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:05:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 604 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-20 17:05:29,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:05:29,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747850428] [2023-12-20 17:05:29,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747850428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:05:29,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:05:29,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:05:29,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900422149] [2023-12-20 17:05:29,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:05:29,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:05:29,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:05:29,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:05:29,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:29,879 INFO L87 Difference]: Start difference. First operand 216875 states and 227188 transitions. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:33,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:05:33,065 INFO L93 Difference]: Finished difference Result 417223 states and 437630 transitions. [2023-12-20 17:05:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:05:33,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 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 807 [2023-12-20 17:05:33,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:05:33,347 INFO L225 Difference]: With dead ends: 417223 [2023-12-20 17:05:33,347 INFO L226 Difference]: Without dead ends: 218456 [2023-12-20 17:05:33,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:33,422 INFO L413 NwaCegarLoop]: 1692 mSDtfsCounter, 532 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 17:05:33,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1818 Invalid, 2457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 17:05:33,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218456 states. [2023-12-20 17:05:35,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218456 to 217662. [2023-12-20 17:05:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217662 states, 217661 states have (on average 1.0475923569220025) internal successors, (228020), 217661 states have internal predecessors, (228020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:36,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217662 states to 217662 states and 228020 transitions. [2023-12-20 17:05:36,562 INFO L78 Accepts]: Start accepts. Automaton has 217662 states and 228020 transitions. Word has length 807 [2023-12-20 17:05:36,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:05:36,563 INFO L495 AbstractCegarLoop]: Abstraction has 217662 states and 228020 transitions. [2023-12-20 17:05:36,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:36,563 INFO L276 IsEmpty]: Start isEmpty. Operand 217662 states and 228020 transitions. [2023-12-20 17:05:36,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2023-12-20 17:05:36,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:05:36,604 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:05:36,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 17:05:36,605 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:05:36,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:05:36,605 INFO L85 PathProgramCache]: Analyzing trace with hash 794022405, now seen corresponding path program 1 times [2023-12-20 17:05:36,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:05:36,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267021478] [2023-12-20 17:05:36,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:36,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:05:36,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2023-12-20 17:05:36,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:05:36,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267021478] [2023-12-20 17:05:36,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267021478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:05:36,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:05:36,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 17:05:36,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813259596] [2023-12-20 17:05:36,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:05:36,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:05:36,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:05:36,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:05:36,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:36,911 INFO L87 Difference]: Start difference. First operand 217662 states and 228020 transitions. Second operand has 3 states, 3 states have (on average 218.0) internal successors, (654), 2 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:39,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:05:39,528 INFO L93 Difference]: Finished difference Result 414046 states and 434170 transitions. [2023-12-20 17:05:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:05:39,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 2 states have internal predecessors, (654), 0 states have call successors, (0), 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 871 [2023-12-20 17:05:39,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:05:39,883 INFO L225 Difference]: With dead ends: 414046 [2023-12-20 17:05:39,883 INFO L226 Difference]: Without dead ends: 214492 [2023-12-20 17:05:39,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:39,986 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 1333 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:05:39,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1333 Valid, 268 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 17:05:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214492 states. [2023-12-20 17:05:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214492 to 214491. [2023-12-20 17:05:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214491 states, 214490 states have (on average 1.0468693179169193) internal successors, (224543), 214490 states have internal predecessors, (224543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214491 states to 214491 states and 224543 transitions. [2023-12-20 17:05:42,869 INFO L78 Accepts]: Start accepts. Automaton has 214491 states and 224543 transitions. Word has length 871 [2023-12-20 17:05:42,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:05:42,869 INFO L495 AbstractCegarLoop]: Abstraction has 214491 states and 224543 transitions. [2023-12-20 17:05:42,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.0) internal successors, (654), 2 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:42,869 INFO L276 IsEmpty]: Start isEmpty. Operand 214491 states and 224543 transitions. [2023-12-20 17:05:42,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2023-12-20 17:05:42,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:05:42,907 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:05:42,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 17:05:42,907 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:05:42,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:05:42,908 INFO L85 PathProgramCache]: Analyzing trace with hash -824528525, now seen corresponding path program 1 times [2023-12-20 17:05:42,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:05:42,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633271159] [2023-12-20 17:05:42,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:42,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:05:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 1267 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-12-20 17:05:43,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:05:43,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633271159] [2023-12-20 17:05:43,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633271159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:05:43,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:05:43,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:05:43,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234727941] [2023-12-20 17:05:43,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:05:43,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:05:43,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:05:43,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:05:43,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:43,750 INFO L87 Difference]: Start difference. First operand 214491 states and 224543 transitions. Second operand has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:47,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:05:47,322 INFO L93 Difference]: Finished difference Result 428209 states and 448276 transitions. [2023-12-20 17:05:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:05:47,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 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 1012 [2023-12-20 17:05:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:05:47,644 INFO L225 Difference]: With dead ends: 428209 [2023-12-20 17:05:47,644 INFO L226 Difference]: Without dead ends: 212927 [2023-12-20 17:05:47,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:47,732 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 719 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:05:47,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1700 Invalid, 2660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 17:05:47,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212927 states. [2023-12-20 17:05:49,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212927 to 210549. [2023-12-20 17:05:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210549 states, 210548 states have (on average 1.039876892680054) internal successors, (218944), 210548 states have internal predecessors, (218944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:50,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210549 states to 210549 states and 218944 transitions. [2023-12-20 17:05:50,503 INFO L78 Accepts]: Start accepts. Automaton has 210549 states and 218944 transitions. Word has length 1012 [2023-12-20 17:05:50,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:05:50,504 INFO L495 AbstractCegarLoop]: Abstraction has 210549 states and 218944 transitions. [2023-12-20 17:05:50,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:50,504 INFO L276 IsEmpty]: Start isEmpty. Operand 210549 states and 218944 transitions. [2023-12-20 17:05:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2023-12-20 17:05:50,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:05:50,545 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:05:50,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 17:05:50,545 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:05:50,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:05:50,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1921922054, now seen corresponding path program 1 times [2023-12-20 17:05:50,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:05:50,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313459236] [2023-12-20 17:05:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:50,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:05:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1832 backedges. 1288 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-12-20 17:05:51,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:05:51,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313459236] [2023-12-20 17:05:51,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313459236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:05:51,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:05:51,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:05:51,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412191732] [2023-12-20 17:05:51,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:05:51,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:05:51,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:05:51,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:05:51,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:51,077 INFO L87 Difference]: Start difference. First operand 210549 states and 218944 transitions. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:05:54,587 INFO L93 Difference]: Finished difference Result 407705 states and 424253 transitions. [2023-12-20 17:05:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:05:54,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 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 1036 [2023-12-20 17:05:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:05:54,936 INFO L225 Difference]: With dead ends: 407705 [2023-12-20 17:05:54,937 INFO L226 Difference]: Without dead ends: 207387 [2023-12-20 17:05:55,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:55,032 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 745 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 17:05:55,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1690 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 17:05:55,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207387 states. [2023-12-20 17:05:57,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207387 to 194792. [2023-12-20 17:05:57,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194792 states, 194791 states have (on average 1.0378559584375049) internal successors, (202165), 194791 states have internal predecessors, (202165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194792 states to 194792 states and 202165 transitions. [2023-12-20 17:05:57,473 INFO L78 Accepts]: Start accepts. Automaton has 194792 states and 202165 transitions. Word has length 1036 [2023-12-20 17:05:57,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:05:57,473 INFO L495 AbstractCegarLoop]: Abstraction has 194792 states and 202165 transitions. [2023-12-20 17:05:57,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:05:57,474 INFO L276 IsEmpty]: Start isEmpty. Operand 194792 states and 202165 transitions. [2023-12-20 17:05:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1075 [2023-12-20 17:05:57,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:05:57,764 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 17:05:57,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 17:05:57,765 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:05:57,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:05:57,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1523046388, now seen corresponding path program 1 times [2023-12-20 17:05:57,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:05:57,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045620513] [2023-12-20 17:05:57,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:05:57,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:05:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:05:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1457 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 1278 trivial. 0 not checked. [2023-12-20 17:05:58,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:05:58,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045620513] [2023-12-20 17:05:58,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045620513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:05:58,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:05:58,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:05:58,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480002848] [2023-12-20 17:05:58,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:05:58,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:05:58,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:05:58,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:05:58,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:05:58,539 INFO L87 Difference]: Start difference. First operand 194792 states and 202165 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:06:02,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:06:02,759 INFO L93 Difference]: Finished difference Result 451873 states and 469184 transitions. [2023-12-20 17:06:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:06:02,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 1074 [2023-12-20 17:06:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:06:03,175 INFO L225 Difference]: With dead ends: 451873 [2023-12-20 17:06:03,175 INFO L226 Difference]: Without dead ends: 257869 [2023-12-20 17:06:03,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:06:03,274 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 955 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 694 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 3397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 694 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 17:06:03,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 421 Invalid, 3397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [694 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 17:06:03,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257869 states. [2023-12-20 17:06:05,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257869 to 239679. [2023-12-20 17:06:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239679 states, 239678 states have (on average 1.0383848329842538) internal successors, (248878), 239678 states have internal predecessors, (248878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:06:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239679 states to 239679 states and 248878 transitions. [2023-12-20 17:06:06,760 INFO L78 Accepts]: Start accepts. Automaton has 239679 states and 248878 transitions. Word has length 1074 [2023-12-20 17:06:06,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:06:06,760 INFO L495 AbstractCegarLoop]: Abstraction has 239679 states and 248878 transitions. [2023-12-20 17:06:06,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:06:06,761 INFO L276 IsEmpty]: Start isEmpty. Operand 239679 states and 248878 transitions. [2023-12-20 17:06:06,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1150 [2023-12-20 17:06:06,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:06:06,831 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:06:06,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 17:06:06,831 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:06:06,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:06:06,832 INFO L85 PathProgramCache]: Analyzing trace with hash 73285494, now seen corresponding path program 1 times [2023-12-20 17:06:06,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:06:06,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247769813] [2023-12-20 17:06:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:06:06,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:06:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:06:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 707 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-12-20 17:06:07,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:06:07,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247769813] [2023-12-20 17:06:07,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247769813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:06:07,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:06:07,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:06:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104395964] [2023-12-20 17:06:07,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:06:07,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:06:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:06:07,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:06:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:06:07,741 INFO L87 Difference]: Start difference. First operand 239679 states and 248878 transitions. Second operand has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:06:11,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:06:11,716 INFO L93 Difference]: Finished difference Result 506124 states and 526551 transitions. [2023-12-20 17:06:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:06:11,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 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 1149 [2023-12-20 17:06:11,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:06:12,116 INFO L225 Difference]: With dead ends: 506124 [2023-12-20 17:06:12,116 INFO L226 Difference]: Without dead ends: 286914 [2023-12-20 17:06:12,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:06:12,541 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 463 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 3146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 17:06:12,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 614 Invalid, 3146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 17:06:12,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286914 states. [2023-12-20 17:06:15,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286914 to 280605. [2023-12-20 17:06:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280605 states, 280604 states have (on average 1.0356944305854514) internal successors, (290620), 280604 states have internal predecessors, (290620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:06:16,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280605 states to 280605 states and 290620 transitions. [2023-12-20 17:06:16,441 INFO L78 Accepts]: Start accepts. Automaton has 280605 states and 290620 transitions. Word has length 1149 [2023-12-20 17:06:16,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:06:16,442 INFO L495 AbstractCegarLoop]: Abstraction has 280605 states and 290620 transitions. [2023-12-20 17:06:16,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:06:16,442 INFO L276 IsEmpty]: Start isEmpty. Operand 280605 states and 290620 transitions. [2023-12-20 17:06:16,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1192 [2023-12-20 17:06:16,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:06:16,527 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:06:16,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 17:06:16,527 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:06:16,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:06:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash -894664324, now seen corresponding path program 1 times [2023-12-20 17:06:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:06:16,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734246713] [2023-12-20 17:06:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:06:16,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:06:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:06:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 847 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 17:06:19,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:06:19,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734246713] [2023-12-20 17:06:19,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734246713] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:06:19,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948533145] [2023-12-20 17:06:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:06:19,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:06:19,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:06:19,836 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:06:19,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 17:06:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:06:20,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-20 17:06:20,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:06:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 715 proven. 228 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-20 17:06:20,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:06:21,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 715 proven. 228 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-20 17:06:21,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948533145] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:06:21,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:06:21,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 3, 3] total 13 [2023-12-20 17:06:21,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372584776] [2023-12-20 17:06:21,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:06:21,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 17:06:21,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:06:21,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 17:06:21,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-20 17:06:21,554 INFO L87 Difference]: Start difference. First operand 280605 states and 290620 transitions. Second operand has 14 states, 14 states have (on average 194.21428571428572) internal successors, (2719), 13 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:06:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:06:46,270 INFO L93 Difference]: Finished difference Result 710988 states and 737020 transitions. [2023-12-20 17:06:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-20 17:06:46,271 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 194.21428571428572) internal successors, (2719), 13 states have internal predecessors, (2719), 0 states have call successors, (0), 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 1191 [2023-12-20 17:06:46,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:06:46,992 INFO L225 Difference]: With dead ends: 710988 [2023-12-20 17:06:46,992 INFO L226 Difference]: Without dead ends: 424079 [2023-12-20 17:06:47,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2410 GetRequests, 2377 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=360, Invalid=830, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 17:06:47,173 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 15166 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 28900 mSolverCounterSat, 5487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15166 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 34387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5487 IncrementalHoareTripleChecker+Valid, 28900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2023-12-20 17:06:47,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15166 Valid, 980 Invalid, 34387 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5487 Valid, 28900 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2023-12-20 17:06:47,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424079 states. [2023-12-20 17:06:51,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424079 to 260853. [2023-12-20 17:06:51,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260853 states, 260852 states have (on average 1.0317459708953736) internal successors, (269133), 260852 states have internal predecessors, (269133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:06:51,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260853 states to 260853 states and 269133 transitions. [2023-12-20 17:06:51,936 INFO L78 Accepts]: Start accepts. Automaton has 260853 states and 269133 transitions. Word has length 1191 [2023-12-20 17:06:51,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:06:51,937 INFO L495 AbstractCegarLoop]: Abstraction has 260853 states and 269133 transitions. [2023-12-20 17:06:51,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 194.21428571428572) internal successors, (2719), 13 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:06:51,937 INFO L276 IsEmpty]: Start isEmpty. Operand 260853 states and 269133 transitions. [2023-12-20 17:06:52,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1322 [2023-12-20 17:06:52,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:06:52,018 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:06:52,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 17:06:52,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 17:06:52,225 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:06:52,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:06:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1388387661, now seen corresponding path program 1 times [2023-12-20 17:06:52,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:06:52,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458326323] [2023-12-20 17:06:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:06:52,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:06:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:06:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 1054 proven. 257 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-12-20 17:06:55,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:06:55,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458326323] [2023-12-20 17:06:55,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458326323] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 17:06:55,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916799323] [2023-12-20 17:06:55,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:06:55,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:06:55,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 17:06:55,328 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 17:06:55,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 17:06:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:06:55,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 17:06:55,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 17:06:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 308 proven. 953 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-20 17:06:56,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 17:06:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 917 proven. 344 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-20 17:06:58,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916799323] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 17:06:58,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 17:06:58,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 14 [2023-12-20 17:06:58,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112314198] [2023-12-20 17:06:58,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 17:06:58,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 17:06:58,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:06:58,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 17:06:58,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-12-20 17:06:58,011 INFO L87 Difference]: Start difference. First operand 260853 states and 269133 transitions. Second operand has 15 states, 15 states have (on average 215.06666666666666) internal successors, (3226), 14 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:07:20,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:07:20,760 INFO L93 Difference]: Finished difference Result 696938 states and 721282 transitions. [2023-12-20 17:07:20,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-20 17:07:20,761 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 215.06666666666666) internal successors, (3226), 14 states have internal predecessors, (3226), 0 states have call successors, (0), 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 1321 [2023-12-20 17:07:20,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:07:21,786 INFO L225 Difference]: With dead ends: 696938 [2023-12-20 17:07:21,786 INFO L226 Difference]: Without dead ends: 457343 [2023-12-20 17:07:21,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2681 GetRequests, 2635 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=585, Invalid=1671, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 17:07:21,956 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 18136 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 26278 mSolverCounterSat, 7929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18136 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 34207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7929 IncrementalHoareTripleChecker+Valid, 26278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2023-12-20 17:07:21,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18136 Valid, 1065 Invalid, 34207 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7929 Valid, 26278 Invalid, 0 Unknown, 0 Unchecked, 19.5s Time] [2023-12-20 17:07:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457343 states. [2023-12-20 17:07:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457343 to 393970. [2023-12-20 17:07:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393970 states, 393969 states have (on average 1.035523099533212) internal successors, (407964), 393969 states have internal predecessors, (407964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:07:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393970 states to 393970 states and 407964 transitions. [2023-12-20 17:07:27,876 INFO L78 Accepts]: Start accepts. Automaton has 393970 states and 407964 transitions. Word has length 1321 [2023-12-20 17:07:27,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 17:07:27,877 INFO L495 AbstractCegarLoop]: Abstraction has 393970 states and 407964 transitions. [2023-12-20 17:07:27,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 215.06666666666666) internal successors, (3226), 14 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:07:27,878 INFO L276 IsEmpty]: Start isEmpty. Operand 393970 states and 407964 transitions. [2023-12-20 17:07:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1550 [2023-12-20 17:07:28,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 17:07:28,048 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 17:07:28,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 17:07:28,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 17:07:28,256 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 17:07:28,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 17:07:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash 638481336, now seen corresponding path program 1 times [2023-12-20 17:07:28,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 17:07:28,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402700608] [2023-12-20 17:07:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 17:07:28,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 17:07:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 17:07:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2299 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 2083 trivial. 0 not checked. [2023-12-20 17:07:29,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 17:07:29,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402700608] [2023-12-20 17:07:29,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402700608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 17:07:29,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 17:07:29,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 17:07:29,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031771427] [2023-12-20 17:07:29,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 17:07:29,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 17:07:29,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 17:07:29,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 17:07:29,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:07:29,493 INFO L87 Difference]: Start difference. First operand 393970 states and 407964 transitions. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 17:07:35,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 17:07:35,065 INFO L93 Difference]: Finished difference Result 814004 states and 843602 transitions. [2023-12-20 17:07:35,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 17:07:35,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 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 1549 [2023-12-20 17:07:35,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 17:07:36,057 INFO L225 Difference]: With dead ends: 814004 [2023-12-20 17:07:36,057 INFO L226 Difference]: Without dead ends: 448379 [2023-12-20 17:07:36,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 17:07:36,213 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 957 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 2572 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 2572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-20 17:07:36,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 358 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 2572 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-20 17:07:36,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448379 states. [2023-12-20 17:07:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448379 to 401047. [2023-12-20 17:07:41,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401047 states, 401046 states have (on average 1.0358761837794168) internal successors, (415434), 401046 states have internal predecessors, (415434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)