/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 04:00:43,384 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 04:00:43,439 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 04:00:43,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 04:00:43,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 04:00:43,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 04:00:43,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 04:00:43,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 04:00:43,458 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 04:00:43,461 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 04:00:43,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 04:00:43,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 04:00:43,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 04:00:43,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 04:00:43,463 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 04:00:43,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 04:00:43,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 04:00:43,463 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 04:00:43,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 04:00:43,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 04:00:43,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 04:00:43,464 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 04:00:43,464 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 04:00:43,464 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 04:00:43,464 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 04:00:43,464 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 04:00:43,465 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 04:00:43,465 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 04:00:43,465 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 04:00:43,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 04:00:43,466 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 04:00:43,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 04:00:43,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:00:43,466 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 04:00:43,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 04:00:43,467 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 04:00:43,467 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 04:00:43,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 04:00:43,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 04:00:43,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 04:00:43,467 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 04:00:43,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 04:00:43,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 04:00:43,467 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 04:00:43,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 04:00:43,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 04:00:43,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 04:00:43,685 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 04:00:43,689 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 04:00:43,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label40.c [2023-12-19 04:00:44,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 04:00:45,025 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 04:00:45,026 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label40.c [2023-12-19 04:00:45,054 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d7903e1/a792bd6fa4bc493284b5642659ab2e1e/FLAG50ba1f724 [2023-12-19 04:00:45,073 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d7903e1/a792bd6fa4bc493284b5642659ab2e1e [2023-12-19 04:00:45,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 04:00:45,076 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 04:00:45,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 04:00:45,079 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 04:00:45,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 04:00:45,082 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:00:45" (1/1) ... [2023-12-19 04:00:45,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6bcf35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:45, skipping insertion in model container [2023-12-19 04:00:45,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:00:45" (1/1) ... [2023-12-19 04:00:45,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 04:00:45,435 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_label40.c[4201,4214] [2023-12-19 04:00:46,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:00:46,036 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 04:00:46,054 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_label40.c[4201,4214] [2023-12-19 04:00:46,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:00:46,417 INFO L206 MainTranslator]: Completed translation [2023-12-19 04:00:46,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46 WrapperNode [2023-12-19 04:00:46,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 04:00:46,420 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 04:00:46,420 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 04:00:46,420 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 04:00:46,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46" (1/1) ... [2023-12-19 04:00:46,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46" (1/1) ... [2023-12-19 04:00:46,865 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-19 04:00:46,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 04:00:46,866 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 04:00:46,866 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 04:00:46,866 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 04:00:46,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46" (1/1) ... [2023-12-19 04:00:46,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46" (1/1) ... [2023-12-19 04:00:46,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46" (1/1) ... [2023-12-19 04:00:47,127 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-19 04:00:47,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46" (1/1) ... [2023-12-19 04:00:47,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46" (1/1) ... [2023-12-19 04:00:47,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46" (1/1) ... [2023-12-19 04:00:47,379 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46" (1/1) ... [2023-12-19 04:00:47,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46" (1/1) ... [2023-12-19 04:00:47,474 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46" (1/1) ... [2023-12-19 04:00:47,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 04:00:47,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 04:00:47,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 04:00:47,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 04:00:47,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46" (1/1) ... [2023-12-19 04:00:47,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:00:47,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:00:47,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 04:00:47,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 04:00:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 04:00:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 04:00:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 04:00:47,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 04:00:47,685 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 04:00:47,687 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 04:00:51,425 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 04:00:51,471 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 04:00:51,471 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 04:00:51,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:00:51 BoogieIcfgContainer [2023-12-19 04:00:51,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 04:00:51,473 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 04:00:51,473 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 04:00:51,475 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 04:00:51,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:00:45" (1/3) ... [2023-12-19 04:00:51,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dbccdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:00:51, skipping insertion in model container [2023-12-19 04:00:51,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:00:46" (2/3) ... [2023-12-19 04:00:51,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dbccdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:00:51, skipping insertion in model container [2023-12-19 04:00:51,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:00:51" (3/3) ... [2023-12-19 04:00:51,478 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label40.c [2023-12-19 04:00:51,491 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 04:00:51,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 04:00:51,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 04:00:51,550 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;@5f8f42ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 04:00:51,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 04:00:51,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:00:51,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-19 04:00:51,561 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:00:51,561 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] [2023-12-19 04:00:51,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:00:51,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:00:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1399272107, now seen corresponding path program 1 times [2023-12-19 04:00:51,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:00:51,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051310721] [2023-12-19 04:00:51,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:00:51,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:00:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:00:51,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:00:51,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:00:51,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051310721] [2023-12-19 04:00:51,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051310721] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:00:51,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:00:51,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:00:51,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876325299] [2023-12-19 04:00:51,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:00:51,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 04:00:51,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:00:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 04:00:51,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:00:51,696 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 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:00:51,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:00:51,770 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-19 04:00:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 04:00:51,772 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-19 04:00:51,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:00:51,790 INFO L225 Difference]: With dead ends: 2071 [2023-12-19 04:00:51,790 INFO L226 Difference]: Without dead ends: 1034 [2023-12-19 04:00:51,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:00:51,799 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:00:51,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 04:00:51,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-19 04:00:51,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-19 04:00:51,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:00:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-19 04:00:51,878 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 27 [2023-12-19 04:00:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:00:51,878 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-19 04:00:51,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:00:51,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-19 04:00:51,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-19 04:00:51,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:00:51,879 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] [2023-12-19 04:00:51,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 04:00:51,880 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:00:51,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:00:51,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1780035253, now seen corresponding path program 1 times [2023-12-19 04:00:51,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:00:51,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812754779] [2023-12-19 04:00:51,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:00:51,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:00:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:00:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:00:52,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:00:52,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812754779] [2023-12-19 04:00:52,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812754779] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:00:52,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:00:52,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:00:52,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939437496] [2023-12-19 04:00:52,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:00:52,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:00:52,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:00:52,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:00:52,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:00:52,010 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:00:55,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:00:55,576 INFO L93 Difference]: Finished difference Result 2996 states and 5467 transitions. [2023-12-19 04:00:55,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:00:55,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-19 04:00:55,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:00:55,583 INFO L225 Difference]: With dead ends: 2996 [2023-12-19 04:00:55,583 INFO L226 Difference]: Without dead ends: 1963 [2023-12-19 04:00:55,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:00:55,586 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 1127 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:00:55,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 945 Invalid, 3179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-19 04:00:55,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2023-12-19 04:00:55,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1950. [2023-12-19 04:00:55,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1949 states have (on average 1.6541816316059517) internal successors, (3224), 1949 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:00:55,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 3224 transitions. [2023-12-19 04:00:55,622 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 3224 transitions. Word has length 27 [2023-12-19 04:00:55,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:00:55,623 INFO L495 AbstractCegarLoop]: Abstraction has 1950 states and 3224 transitions. [2023-12-19 04:00:55,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:00:55,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 3224 transitions. [2023-12-19 04:00:55,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-19 04:00:55,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:00:55,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:00:55,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 04:00:55,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:00:55,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:00:55,626 INFO L85 PathProgramCache]: Analyzing trace with hash 913378642, now seen corresponding path program 1 times [2023-12-19 04:00:55,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:00:55,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959887688] [2023-12-19 04:00:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:00:55,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:00:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:00:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:00:55,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:00:55,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959887688] [2023-12-19 04:00:55,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959887688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:00:55,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:00:55,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:00:55,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138141440] [2023-12-19 04:00:55,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:00:55,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:00:55,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:00:55,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:00:55,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:00:55,800 INFO L87 Difference]: Start difference. First operand 1950 states and 3224 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:00:59,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:00:59,145 INFO L93 Difference]: Finished difference Result 5541 states and 9221 transitions. [2023-12-19 04:00:59,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:00:59,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-19 04:00:59,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:00:59,157 INFO L225 Difference]: With dead ends: 5541 [2023-12-19 04:00:59,157 INFO L226 Difference]: Without dead ends: 3592 [2023-12-19 04:00:59,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:00:59,166 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 924 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 749 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 749 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:00:59,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1007 Invalid, 3342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [749 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 04:00:59,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2023-12-19 04:00:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 3580. [2023-12-19 04:00:59,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3580 states, 3579 states have (on average 1.5051690416317407) internal successors, (5387), 3579 states have internal predecessors, (5387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:00:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3580 states to 3580 states and 5387 transitions. [2023-12-19 04:00:59,233 INFO L78 Accepts]: Start accepts. Automaton has 3580 states and 5387 transitions. Word has length 98 [2023-12-19 04:00:59,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:00:59,236 INFO L495 AbstractCegarLoop]: Abstraction has 3580 states and 5387 transitions. [2023-12-19 04:00:59,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:00:59,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3580 states and 5387 transitions. [2023-12-19 04:00:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-19 04:00:59,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:00:59,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:00:59,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 04:00:59,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:00:59,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:00:59,247 INFO L85 PathProgramCache]: Analyzing trace with hash 22567311, now seen corresponding path program 1 times [2023-12-19 04:00:59,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:00:59,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9421356] [2023-12-19 04:00:59,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:00:59,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:00:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:00:59,400 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:00:59,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:00:59,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9421356] [2023-12-19 04:00:59,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9421356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:00:59,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:00:59,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:00:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277035768] [2023-12-19 04:00:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:00:59,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:00:59,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:00:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:00:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:00:59,404 INFO L87 Difference]: Start difference. First operand 3580 states and 5387 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:01:02,658 INFO L93 Difference]: Finished difference Result 10351 states and 15624 transitions. [2023-12-19 04:01:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:01:02,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2023-12-19 04:01:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:01:02,680 INFO L225 Difference]: With dead ends: 10351 [2023-12-19 04:01:02,681 INFO L226 Difference]: Without dead ends: 6772 [2023-12-19 04:01:02,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:02,689 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 786 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 786 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 786 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:01:02,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1169 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [786 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:01:02,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6772 states. [2023-12-19 04:01:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6772 to 6748. [2023-12-19 04:01:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6748 states, 6747 states have (on average 1.325626204238921) internal successors, (8944), 6747 states have internal predecessors, (8944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 8944 transitions. [2023-12-19 04:01:02,811 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 8944 transitions. Word has length 112 [2023-12-19 04:01:02,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:01:02,811 INFO L495 AbstractCegarLoop]: Abstraction has 6748 states and 8944 transitions. [2023-12-19 04:01:02,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 8944 transitions. [2023-12-19 04:01:02,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-19 04:01:02,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:01:02,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:01:02,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 04:01:02,813 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:01:02,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:01:02,813 INFO L85 PathProgramCache]: Analyzing trace with hash 302914299, now seen corresponding path program 1 times [2023-12-19 04:01:02,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:01:02,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78723430] [2023-12-19 04:01:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:01:02,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:01:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:01:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:01:02,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:01:02,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78723430] [2023-12-19 04:01:02,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78723430] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:01:02,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:01:02,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:01:02,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781573353] [2023-12-19 04:01:02,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:01:02,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:01:02,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:01:02,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:01:02,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:02,946 INFO L87 Difference]: Start difference. First operand 6748 states and 8944 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:01:05,974 INFO L93 Difference]: Finished difference Result 19803 states and 26225 transitions. [2023-12-19 04:01:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:01:05,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2023-12-19 04:01:05,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:01:06,011 INFO L225 Difference]: With dead ends: 19803 [2023-12-19 04:01:06,011 INFO L226 Difference]: Without dead ends: 13056 [2023-12-19 04:01:06,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:06,022 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 865 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:01:06,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1033 Invalid, 3206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 04:01:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13056 states. [2023-12-19 04:01:06,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13056 to 13051. [2023-12-19 04:01:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13051 states, 13050 states have (on average 1.2182375478927203) internal successors, (15898), 13050 states have internal predecessors, (15898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:06,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13051 states to 13051 states and 15898 transitions. [2023-12-19 04:01:06,289 INFO L78 Accepts]: Start accepts. Automaton has 13051 states and 15898 transitions. Word has length 141 [2023-12-19 04:01:06,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:01:06,290 INFO L495 AbstractCegarLoop]: Abstraction has 13051 states and 15898 transitions. [2023-12-19 04:01:06,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:06,290 INFO L276 IsEmpty]: Start isEmpty. Operand 13051 states and 15898 transitions. [2023-12-19 04:01:06,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-19 04:01:06,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:01:06,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:01:06,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 04:01:06,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:01:06,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:01:06,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1202995836, now seen corresponding path program 1 times [2023-12-19 04:01:06,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:01:06,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482458620] [2023-12-19 04:01:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:01:06,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:01:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:01:06,484 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:01:06,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:01:06,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482458620] [2023-12-19 04:01:06,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482458620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:01:06,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:01:06,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:01:06,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964741673] [2023-12-19 04:01:06,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:01:06,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:01:06,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:01:06,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:01:06,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:01:06,491 INFO L87 Difference]: Start difference. First operand 13051 states and 15898 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:12,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:01:12,377 INFO L93 Difference]: Finished difference Result 47612 states and 58540 transitions. [2023-12-19 04:01:12,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:01:12,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2023-12-19 04:01:12,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:01:12,446 INFO L225 Difference]: With dead ends: 47612 [2023-12-19 04:01:12,446 INFO L226 Difference]: Without dead ends: 34562 [2023-12-19 04:01:12,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:01:12,469 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 1659 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 6153 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 6767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 6153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:01:12,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 1180 Invalid, 6767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [614 Valid, 6153 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-19 04:01:12,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34562 states. [2023-12-19 04:01:12,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34562 to 34359. [2023-12-19 04:01:12,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34359 states, 34358 states have (on average 1.1786483497293208) internal successors, (40496), 34358 states have internal predecessors, (40496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34359 states to 34359 states and 40496 transitions. [2023-12-19 04:01:12,844 INFO L78 Accepts]: Start accepts. Automaton has 34359 states and 40496 transitions. Word has length 152 [2023-12-19 04:01:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:01:12,845 INFO L495 AbstractCegarLoop]: Abstraction has 34359 states and 40496 transitions. [2023-12-19 04:01:12,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 34359 states and 40496 transitions. [2023-12-19 04:01:12,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2023-12-19 04:01:12,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:01:12,847 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:01:12,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 04:01:12,848 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:01:12,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:01:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1131620141, now seen corresponding path program 1 times [2023-12-19 04:01:12,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:01:12,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084506965] [2023-12-19 04:01:12,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:01:12,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:01:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:01:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 04:01:13,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:01:13,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084506965] [2023-12-19 04:01:13,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084506965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:01:13,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:01:13,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:01:13,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382064396] [2023-12-19 04:01:13,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:01:13,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:01:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:01:13,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:01:13,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:13,125 INFO L87 Difference]: Start difference. First operand 34359 states and 40496 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:15,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:01:15,807 INFO L93 Difference]: Finished difference Result 69504 states and 81793 transitions. [2023-12-19 04:01:15,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:01:15,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 217 [2023-12-19 04:01:15,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:01:15,865 INFO L225 Difference]: With dead ends: 69504 [2023-12-19 04:01:15,866 INFO L226 Difference]: Without dead ends: 35146 [2023-12-19 04:01:15,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:15,896 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:01:15,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1210 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 04:01:15,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35146 states. [2023-12-19 04:01:16,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35146 to 35146. [2023-12-19 04:01:16,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35146 states, 35145 states have (on average 1.1747901550718451) internal successors, (41288), 35145 states have internal predecessors, (41288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:16,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35146 states to 35146 states and 41288 transitions. [2023-12-19 04:01:16,218 INFO L78 Accepts]: Start accepts. Automaton has 35146 states and 41288 transitions. Word has length 217 [2023-12-19 04:01:16,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:01:16,218 INFO L495 AbstractCegarLoop]: Abstraction has 35146 states and 41288 transitions. [2023-12-19 04:01:16,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:16,219 INFO L276 IsEmpty]: Start isEmpty. Operand 35146 states and 41288 transitions. [2023-12-19 04:01:16,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-12-19 04:01:16,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:01:16,220 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:01:16,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 04:01:16,221 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:01:16,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:01:16,221 INFO L85 PathProgramCache]: Analyzing trace with hash -155705274, now seen corresponding path program 1 times [2023-12-19 04:01:16,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:01:16,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648502647] [2023-12-19 04:01:16,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:01:16,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:01:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:01:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:01:16,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:01:16,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648502647] [2023-12-19 04:01:16,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648502647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:01:16,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:01:16,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:01:16,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976852285] [2023-12-19 04:01:16,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:01:16,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:01:16,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:01:16,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:01:16,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:01:16,385 INFO L87 Difference]: Start difference. First operand 35146 states and 41288 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:23,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:01:23,169 INFO L93 Difference]: Finished difference Result 94991 states and 112853 transitions. [2023-12-19 04:01:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:01:23,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 224 [2023-12-19 04:01:23,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:01:23,258 INFO L225 Difference]: With dead ends: 94991 [2023-12-19 04:01:23,258 INFO L226 Difference]: Without dead ends: 60633 [2023-12-19 04:01:23,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:01:23,281 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 1724 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 6855 mSolverCounterSat, 1090 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 7945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1090 IncrementalHoareTripleChecker+Valid, 6855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:01:23,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1724 Valid, 881 Invalid, 7945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1090 Valid, 6855 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-19 04:01:23,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60633 states. [2023-12-19 04:01:23,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60633 to 60454. [2023-12-19 04:01:23,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60454 states, 60453 states have (on average 1.1679651961027575) internal successors, (70607), 60453 states have internal predecessors, (70607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60454 states to 60454 states and 70607 transitions. [2023-12-19 04:01:24,098 INFO L78 Accepts]: Start accepts. Automaton has 60454 states and 70607 transitions. Word has length 224 [2023-12-19 04:01:24,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:01:24,098 INFO L495 AbstractCegarLoop]: Abstraction has 60454 states and 70607 transitions. [2023-12-19 04:01:24,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 60454 states and 70607 transitions. [2023-12-19 04:01:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-12-19 04:01:24,100 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:01:24,100 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:01:24,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 04:01:24,101 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:01:24,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:01:24,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1302564877, now seen corresponding path program 1 times [2023-12-19 04:01:24,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:01:24,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497725900] [2023-12-19 04:01:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:01:24,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:01:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:01:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:01:24,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:01:24,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497725900] [2023-12-19 04:01:24,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497725900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:01:24,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:01:24,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:01:24,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445016315] [2023-12-19 04:01:24,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:01:24,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:01:24,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:01:24,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:01:24,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:24,290 INFO L87 Difference]: Start difference. First operand 60454 states and 70607 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:27,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:01:27,864 INFO L93 Difference]: Finished difference Result 146102 states and 173483 transitions. [2023-12-19 04:01:27,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:01:27,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2023-12-19 04:01:27,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:01:28,053 INFO L225 Difference]: With dead ends: 146102 [2023-12-19 04:01:28,053 INFO L226 Difference]: Without dead ends: 86436 [2023-12-19 04:01:28,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:28,065 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 810 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 3327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:01:28,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1081 Invalid, 3327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:01:28,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86436 states. [2023-12-19 04:01:28,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86436 to 84850. [2023-12-19 04:01:28,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84850 states, 84849 states have (on average 1.1580926115805725) internal successors, (98263), 84849 states have internal predecessors, (98263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84850 states to 84850 states and 98263 transitions. [2023-12-19 04:01:28,907 INFO L78 Accepts]: Start accepts. Automaton has 84850 states and 98263 transitions. Word has length 234 [2023-12-19 04:01:28,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:01:28,908 INFO L495 AbstractCegarLoop]: Abstraction has 84850 states and 98263 transitions. [2023-12-19 04:01:28,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand 84850 states and 98263 transitions. [2023-12-19 04:01:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-19 04:01:28,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:01:28,911 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:01:28,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 04:01:28,911 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:01:28,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:01:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash -951090516, now seen corresponding path program 1 times [2023-12-19 04:01:28,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:01:28,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451620875] [2023-12-19 04:01:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:01:28,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:01:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:01:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:01:29,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:01:29,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451620875] [2023-12-19 04:01:29,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451620875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:01:29,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:01:29,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:01:29,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336200238] [2023-12-19 04:01:29,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:01:29,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:01:29,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:01:29,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:01:29,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:29,243 INFO L87 Difference]: Start difference. First operand 84850 states and 98263 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:32,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:01:32,467 INFO L93 Difference]: Finished difference Result 166364 states and 192909 transitions. [2023-12-19 04:01:32,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:01:32,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2023-12-19 04:01:32,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:01:32,579 INFO L225 Difference]: With dead ends: 166364 [2023-12-19 04:01:32,579 INFO L226 Difference]: Without dead ends: 82302 [2023-12-19 04:01:32,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:32,612 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 1036 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:01:32,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1645 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 04:01:32,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82302 states. [2023-12-19 04:01:33,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82302 to 75994. [2023-12-19 04:01:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75994 states, 75993 states have (on average 1.1166817996394405) internal successors, (84860), 75993 states have internal predecessors, (84860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:33,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75994 states to 75994 states and 84860 transitions. [2023-12-19 04:01:33,617 INFO L78 Accepts]: Start accepts. Automaton has 75994 states and 84860 transitions. Word has length 241 [2023-12-19 04:01:33,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:01:33,617 INFO L495 AbstractCegarLoop]: Abstraction has 75994 states and 84860 transitions. [2023-12-19 04:01:33,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:33,617 INFO L276 IsEmpty]: Start isEmpty. Operand 75994 states and 84860 transitions. [2023-12-19 04:01:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2023-12-19 04:01:33,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:01:33,625 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 04:01:33,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 04:01:33,625 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:01:33,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:01:33,626 INFO L85 PathProgramCache]: Analyzing trace with hash -873648594, now seen corresponding path program 1 times [2023-12-19 04:01:33,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:01:33,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558581001] [2023-12-19 04:01:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:01:33,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:01:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:01:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-19 04:01:33,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:01:33,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558581001] [2023-12-19 04:01:33,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558581001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:01:33,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:01:33,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:01:33,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649900013] [2023-12-19 04:01:33,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:01:33,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:01:33,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:01:33,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:01:33,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:33,820 INFO L87 Difference]: Start difference. First operand 75994 states and 84860 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:37,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:01:37,141 INFO L93 Difference]: Finished difference Result 153565 states and 171313 transitions. [2023-12-19 04:01:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:01:37,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 313 [2023-12-19 04:01:37,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:01:37,258 INFO L225 Difference]: With dead ends: 153565 [2023-12-19 04:01:37,258 INFO L226 Difference]: Without dead ends: 78359 [2023-12-19 04:01:37,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:37,291 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 939 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2488 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 2488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:01:37,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 1474 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 2488 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 04:01:37,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78359 states. [2023-12-19 04:01:38,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78359 to 75987. [2023-12-19 04:01:38,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75987 states, 75986 states have (on average 1.0957413207696154) internal successors, (83261), 75986 states have internal predecessors, (83261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:38,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75987 states to 75987 states and 83261 transitions. [2023-12-19 04:01:38,372 INFO L78 Accepts]: Start accepts. Automaton has 75987 states and 83261 transitions. Word has length 313 [2023-12-19 04:01:38,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:01:38,372 INFO L495 AbstractCegarLoop]: Abstraction has 75987 states and 83261 transitions. [2023-12-19 04:01:38,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:38,373 INFO L276 IsEmpty]: Start isEmpty. Operand 75987 states and 83261 transitions. [2023-12-19 04:01:38,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-12-19 04:01:38,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:01:38,376 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 04:01:38,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 04:01:38,376 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:01:38,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:01:38,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1894669301, now seen corresponding path program 1 times [2023-12-19 04:01:38,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:01:38,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416620792] [2023-12-19 04:01:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:01:38,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:01:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:01:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-19 04:01:38,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:01:38,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416620792] [2023-12-19 04:01:38,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416620792] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:01:38,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:01:38,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:01:38,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68991846] [2023-12-19 04:01:38,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:01:38,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:01:38,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:01:38,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:01:38,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:38,741 INFO L87 Difference]: Start difference. First operand 75987 states and 83261 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) [2023-12-19 04:01:42,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:01:42,040 INFO L93 Difference]: Finished difference Result 173235 states and 190619 transitions. [2023-12-19 04:01:42,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:01:42,040 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 323 [2023-12-19 04:01:42,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:01:42,158 INFO L225 Difference]: With dead ends: 173235 [2023-12-19 04:01:42,158 INFO L226 Difference]: Without dead ends: 98036 [2023-12-19 04:01:42,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:42,191 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 893 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:01:42,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 844 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 04:01:42,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98036 states. [2023-12-19 04:01:43,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98036 to 96446. [2023-12-19 04:01:43,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96446 states, 96445 states have (on average 1.090580123386386) internal successors, (105181), 96445 states have internal predecessors, (105181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96446 states to 96446 states and 105181 transitions. [2023-12-19 04:01:43,498 INFO L78 Accepts]: Start accepts. Automaton has 96446 states and 105181 transitions. Word has length 323 [2023-12-19 04:01:43,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:01:43,500 INFO L495 AbstractCegarLoop]: Abstraction has 96446 states and 105181 transitions. [2023-12-19 04:01:43,500 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) [2023-12-19 04:01:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 96446 states and 105181 transitions. [2023-12-19 04:01:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-12-19 04:01:43,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:01:43,504 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:01:43,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 04:01:43,504 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:01:43,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:01:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1913950626, now seen corresponding path program 1 times [2023-12-19 04:01:43,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:01:43,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207722818] [2023-12-19 04:01:43,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:01:43,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:01:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:01:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-12-19 04:01:43,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:01:43,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207722818] [2023-12-19 04:01:43,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207722818] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:01:43,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:01:43,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:01:43,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310202683] [2023-12-19 04:01:43,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:01:43,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:01:43,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:01:43,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:01:43,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:43,722 INFO L87 Difference]: Start difference. First operand 96446 states and 105181 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:47,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:01:47,134 INFO L93 Difference]: Finished difference Result 209436 states and 227969 transitions. [2023-12-19 04:01:47,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:01:47,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 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 340 [2023-12-19 04:01:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:01:47,419 INFO L225 Difference]: With dead ends: 209436 [2023-12-19 04:01:47,420 INFO L226 Difference]: Without dead ends: 113778 [2023-12-19 04:01:47,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:47,459 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 724 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 2685 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:01:47,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 1195 Invalid, 2825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2685 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 04:01:47,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113778 states. [2023-12-19 04:01:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113778 to 112981. [2023-12-19 04:01:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112981 states, 112980 states have (on average 1.081837493361657) internal successors, (122226), 112980 states have internal predecessors, (122226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112981 states to 112981 states and 122226 transitions. [2023-12-19 04:01:48,849 INFO L78 Accepts]: Start accepts. Automaton has 112981 states and 122226 transitions. Word has length 340 [2023-12-19 04:01:48,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:01:48,849 INFO L495 AbstractCegarLoop]: Abstraction has 112981 states and 122226 transitions. [2023-12-19 04:01:48,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 112981 states and 122226 transitions. [2023-12-19 04:01:48,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-12-19 04:01:48,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:01:48,860 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:01:48,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 04:01:48,860 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:01:48,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:01:48,860 INFO L85 PathProgramCache]: Analyzing trace with hash 334939663, now seen corresponding path program 1 times [2023-12-19 04:01:48,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:01:48,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555451497] [2023-12-19 04:01:48,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:01:48,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:01:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:01:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 04:01:49,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:01:49,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555451497] [2023-12-19 04:01:49,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555451497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:01:49,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:01:49,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:01:49,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117709567] [2023-12-19 04:01:49,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:01:49,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:01:49,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:01:49,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:01:49,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:01:49,278 INFO L87 Difference]: Start difference. First operand 112981 states and 122226 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:55,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:01:55,313 INFO L93 Difference]: Finished difference Result 274831 states and 300812 transitions. [2023-12-19 04:01:55,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:01:55,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 354 [2023-12-19 04:01:55,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:01:55,561 INFO L225 Difference]: With dead ends: 274831 [2023-12-19 04:01:55,562 INFO L226 Difference]: Without dead ends: 179173 [2023-12-19 04:01:55,615 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 [2023-12-19 04:01:55,615 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 1631 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 6165 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 6940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 6165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:01:55,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 1057 Invalid, 6940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 6165 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-12-19 04:01:55,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179173 states. [2023-12-19 04:01:57,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179173 to 178335. [2023-12-19 04:01:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178335 states, 178334 states have (on average 1.0821660479773907) internal successors, (192987), 178334 states have internal predecessors, (192987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178335 states to 178335 states and 192987 transitions. [2023-12-19 04:01:57,824 INFO L78 Accepts]: Start accepts. Automaton has 178335 states and 192987 transitions. Word has length 354 [2023-12-19 04:01:57,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:01:57,824 INFO L495 AbstractCegarLoop]: Abstraction has 178335 states and 192987 transitions. [2023-12-19 04:01:57,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:01:57,824 INFO L276 IsEmpty]: Start isEmpty. Operand 178335 states and 192987 transitions. [2023-12-19 04:01:57,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-12-19 04:01:57,827 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:01:57,828 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:01:57,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 04:01:57,828 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:01:57,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:01:57,828 INFO L85 PathProgramCache]: Analyzing trace with hash 36352905, now seen corresponding path program 1 times [2023-12-19 04:01:57,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:01:57,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747243128] [2023-12-19 04:01:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:01:57,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:01:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:01:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-12-19 04:01:58,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:01:58,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747243128] [2023-12-19 04:01:58,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747243128] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:01:58,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:01:58,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:01:58,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310612043] [2023-12-19 04:01:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:01:58,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:01:58,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:01:58,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:01:58,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:01:58,207 INFO L87 Difference]: Start difference. First operand 178335 states and 192987 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:01,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:02:01,638 INFO L93 Difference]: Finished difference Result 359057 states and 388374 transitions. [2023-12-19 04:02:01,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:02:01,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 356 [2023-12-19 04:02:01,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:02:02,149 INFO L225 Difference]: With dead ends: 359057 [2023-12-19 04:02:02,150 INFO L226 Difference]: Without dead ends: 180723 [2023-12-19 04:02:02,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:02:02,252 INFO L413 NwaCegarLoop]: 1271 mSDtfsCounter, 1087 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:02:02,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1320 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 04:02:02,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180723 states. [2023-12-19 04:02:04,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180723 to 175183. [2023-12-19 04:02:04,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175183 states, 175182 states have (on average 1.0779532143713395) internal successors, (188838), 175182 states have internal predecessors, (188838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175183 states to 175183 states and 188838 transitions. [2023-12-19 04:02:04,714 INFO L78 Accepts]: Start accepts. Automaton has 175183 states and 188838 transitions. Word has length 356 [2023-12-19 04:02:04,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:02:04,715 INFO L495 AbstractCegarLoop]: Abstraction has 175183 states and 188838 transitions. [2023-12-19 04:02:04,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:04,715 INFO L276 IsEmpty]: Start isEmpty. Operand 175183 states and 188838 transitions. [2023-12-19 04:02:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-19 04:02:04,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:02:04,718 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:02:04,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 04:02:04,719 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:02:04,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:02:04,719 INFO L85 PathProgramCache]: Analyzing trace with hash 302112554, now seen corresponding path program 1 times [2023-12-19 04:02:04,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:02:04,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794640264] [2023-12-19 04:02:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:02:04,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:02:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:02:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 252 proven. 113 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-19 04:02:05,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:02:05,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794640264] [2023-12-19 04:02:05,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794640264] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:02:05,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696651934] [2023-12-19 04:02:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:02:05,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:02:05,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:02:05,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:02:05,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 04:02:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:02:06,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:02:06,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:02:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 04:02:06,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:02:06,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696651934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:02:06,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:02:06,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 04:02:06,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723780580] [2023-12-19 04:02:06,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:02:06,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:02:06,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:02:06,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:02:06,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:02:06,168 INFO L87 Difference]: Start difference. First operand 175183 states and 188838 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:09,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:02:09,652 INFO L93 Difference]: Finished difference Result 347215 states and 374216 transitions. [2023-12-19 04:02:09,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:02:09,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 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 369 [2023-12-19 04:02:09,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:02:09,911 INFO L225 Difference]: With dead ends: 347215 [2023-12-19 04:02:09,911 INFO L226 Difference]: Without dead ends: 172820 [2023-12-19 04:02:09,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:02:09,981 INFO L413 NwaCegarLoop]: 1335 mSDtfsCounter, 1094 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:02:09,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1413 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 04:02:10,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172820 states. [2023-12-19 04:02:12,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172820 to 171240. [2023-12-19 04:02:12,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171240 states, 171239 states have (on average 1.0590986866309662) internal successors, (181359), 171239 states have internal predecessors, (181359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171240 states to 171240 states and 181359 transitions. [2023-12-19 04:02:12,427 INFO L78 Accepts]: Start accepts. Automaton has 171240 states and 181359 transitions. Word has length 369 [2023-12-19 04:02:12,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:02:12,427 INFO L495 AbstractCegarLoop]: Abstraction has 171240 states and 181359 transitions. [2023-12-19 04:02:12,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:12,428 INFO L276 IsEmpty]: Start isEmpty. Operand 171240 states and 181359 transitions. [2023-12-19 04:02:12,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-19 04:02:12,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:02:12,431 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:02:12,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 04:02:12,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-19 04:02:12,632 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:02:12,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:02:12,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1512093016, now seen corresponding path program 1 times [2023-12-19 04:02:12,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:02:12,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644338869] [2023-12-19 04:02:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:02:12,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:02:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:02:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-12-19 04:02:13,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:02:13,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644338869] [2023-12-19 04:02:13,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644338869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:02:13,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:02:13,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:02:13,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632808352] [2023-12-19 04:02:13,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:02:13,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:02:13,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:02:13,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:02:13,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:02:13,228 INFO L87 Difference]: Start difference. First operand 171240 states and 181359 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:19,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:02:19,435 INFO L93 Difference]: Finished difference Result 416605 states and 443062 transitions. [2023-12-19 04:02:19,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:02:19,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 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 382 [2023-12-19 04:02:19,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:02:19,784 INFO L225 Difference]: With dead ends: 416605 [2023-12-19 04:02:19,784 INFO L226 Difference]: Without dead ends: 261899 [2023-12-19 04:02:19,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:02:19,853 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1935 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 4947 mSolverCounterSat, 1314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 6261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1314 IncrementalHoareTripleChecker+Valid, 4947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:02:19,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1935 Valid, 782 Invalid, 6261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1314 Valid, 4947 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-19 04:02:20,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261899 states. [2023-12-19 04:02:22,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261899 to 250859. [2023-12-19 04:02:22,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250859 states, 250858 states have (on average 1.0575903499190777) internal successors, (265305), 250858 states have internal predecessors, (265305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:23,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250859 states to 250859 states and 265305 transitions. [2023-12-19 04:02:23,223 INFO L78 Accepts]: Start accepts. Automaton has 250859 states and 265305 transitions. Word has length 382 [2023-12-19 04:02:23,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:02:23,223 INFO L495 AbstractCegarLoop]: Abstraction has 250859 states and 265305 transitions. [2023-12-19 04:02:23,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:23,224 INFO L276 IsEmpty]: Start isEmpty. Operand 250859 states and 265305 transitions. [2023-12-19 04:02:23,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2023-12-19 04:02:23,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:02:23,228 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:02:23,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 04:02:23,229 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:02:23,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:02:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash -168980626, now seen corresponding path program 1 times [2023-12-19 04:02:23,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:02:23,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146307199] [2023-12-19 04:02:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:02:23,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:02:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:02:24,413 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 355 proven. 113 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-19 04:02:24,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:02:24,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146307199] [2023-12-19 04:02:24,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146307199] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:02:24,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098389308] [2023-12-19 04:02:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:02:24,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:02:24,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:02:24,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:02:24,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 04:02:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:02:24,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 04:02:24,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:02:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-12-19 04:02:25,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:02:25,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098389308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:02:25,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:02:25,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-19 04:02:25,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385107870] [2023-12-19 04:02:25,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:02:25,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:02:25,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:02:25,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:02:25,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:02:25,041 INFO L87 Difference]: Start difference. First operand 250859 states and 265305 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:28,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:02:28,766 INFO L93 Difference]: Finished difference Result 494651 states and 523373 transitions. [2023-12-19 04:02:28,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:02:28,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 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 421 [2023-12-19 04:02:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:02:29,409 INFO L225 Difference]: With dead ends: 494651 [2023-12-19 04:02:29,410 INFO L226 Difference]: Without dead ends: 257173 [2023-12-19 04:02:29,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:02:29,497 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 685 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:02:29,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1151 Invalid, 2560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 04:02:29,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257173 states. [2023-12-19 04:02:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257173 to 251648. [2023-12-19 04:02:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251648 states, 251647 states have (on average 1.0560865021240071) internal successors, (265761), 251647 states have internal predecessors, (265761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:32,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251648 states to 251648 states and 265761 transitions. [2023-12-19 04:02:32,929 INFO L78 Accepts]: Start accepts. Automaton has 251648 states and 265761 transitions. Word has length 421 [2023-12-19 04:02:32,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:02:32,929 INFO L495 AbstractCegarLoop]: Abstraction has 251648 states and 265761 transitions. [2023-12-19 04:02:32,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:32,930 INFO L276 IsEmpty]: Start isEmpty. Operand 251648 states and 265761 transitions. [2023-12-19 04:02:32,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2023-12-19 04:02:32,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:02:32,934 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:02:32,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 04:02:33,141 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,SelfDestructingSolverStorable17 [2023-12-19 04:02:33,141 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:02:33,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:02:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1407690168, now seen corresponding path program 1 times [2023-12-19 04:02:33,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:02:33,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461428824] [2023-12-19 04:02:33,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:02:33,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:02:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:02:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 04:02:33,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:02:33,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461428824] [2023-12-19 04:02:33,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461428824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:02:33,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:02:33,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:02:33,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236317474] [2023-12-19 04:02:33,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:02:33,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:02:33,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:02:33,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:02:33,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:02:33,404 INFO L87 Difference]: Start difference. First operand 251648 states and 265761 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:37,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:02:37,760 INFO L93 Difference]: Finished difference Result 548963 states and 581298 transitions. [2023-12-19 04:02:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:02:37,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 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 462 [2023-12-19 04:02:37,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:02:38,314 INFO L225 Difference]: With dead ends: 548963 [2023-12-19 04:02:38,315 INFO L226 Difference]: Without dead ends: 294955 [2023-12-19 04:02:38,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:02:38,526 INFO L413 NwaCegarLoop]: 1775 mSDtfsCounter, 733 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2537 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:02:38,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 1917 Invalid, 2988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2537 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 04:02:38,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294955 states. [2023-12-19 04:02:41,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294955 to 289420. [2023-12-19 04:02:41,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289420 states, 289419 states have (on average 1.0504804453059404) internal successors, (304029), 289419 states have internal predecessors, (304029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:42,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289420 states to 289420 states and 304029 transitions. [2023-12-19 04:02:42,679 INFO L78 Accepts]: Start accepts. Automaton has 289420 states and 304029 transitions. Word has length 462 [2023-12-19 04:02:42,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:02:42,680 INFO L495 AbstractCegarLoop]: Abstraction has 289420 states and 304029 transitions. [2023-12-19 04:02:42,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:42,680 INFO L276 IsEmpty]: Start isEmpty. Operand 289420 states and 304029 transitions. [2023-12-19 04:02:42,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2023-12-19 04:02:42,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:02:42,697 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:02:42,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 04:02:42,697 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:02:42,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:02:42,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1090205713, now seen corresponding path program 1 times [2023-12-19 04:02:42,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:02:42,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056450402] [2023-12-19 04:02:42,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:02:42,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:02:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:02:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-12-19 04:02:42,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:02:42,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056450402] [2023-12-19 04:02:42,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056450402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:02:42,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:02:42,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:02:42,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224678741] [2023-12-19 04:02:42,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:02:42,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:02:42,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:02:42,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:02:42,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:02:42,928 INFO L87 Difference]: Start difference. First operand 289420 states and 304029 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:47,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:02:47,692 INFO L93 Difference]: Finished difference Result 611214 states and 641907 transitions. [2023-12-19 04:02:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:02:47,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 463 [2023-12-19 04:02:47,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:02:48,188 INFO L225 Difference]: With dead ends: 611214 [2023-12-19 04:02:48,188 INFO L226 Difference]: Without dead ends: 321795 [2023-12-19 04:02:48,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:02:48,603 INFO L413 NwaCegarLoop]: 1718 mSDtfsCounter, 865 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2995 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 3320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:02:48,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1847 Invalid, 3320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2995 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:02:48,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321795 states. [2023-12-19 04:02:51,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321795 to 314632. [2023-12-19 04:02:51,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314632 states, 314631 states have (on average 1.0470741916721493) internal successors, (329442), 314631 states have internal predecessors, (329442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:52,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314632 states to 314632 states and 329442 transitions. [2023-12-19 04:02:52,490 INFO L78 Accepts]: Start accepts. Automaton has 314632 states and 329442 transitions. Word has length 463 [2023-12-19 04:02:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:02:52,490 INFO L495 AbstractCegarLoop]: Abstraction has 314632 states and 329442 transitions. [2023-12-19 04:02:52,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:52,490 INFO L276 IsEmpty]: Start isEmpty. Operand 314632 states and 329442 transitions. [2023-12-19 04:02:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-19 04:02:52,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:02:52,497 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:02:52,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 04:02:52,498 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:02:52,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:02:52,498 INFO L85 PathProgramCache]: Analyzing trace with hash -848147842, now seen corresponding path program 1 times [2023-12-19 04:02:52,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:02:52,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823920228] [2023-12-19 04:02:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:02:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:02:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:02:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1262 backedges. 791 proven. 0 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2023-12-19 04:02:53,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:02:53,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823920228] [2023-12-19 04:02:53,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823920228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:02:53,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:02:53,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:02:53,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989125655] [2023-12-19 04:02:53,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:02:53,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:02:53,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:02:53,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:02:53,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:02:53,178 INFO L87 Difference]: Start difference. First operand 314632 states and 329442 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:02:58,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:02:58,125 INFO L93 Difference]: Finished difference Result 694739 states and 728929 transitions. [2023-12-19 04:02:58,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:02:58,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 515 [2023-12-19 04:02:58,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:02:59,108 INFO L225 Difference]: With dead ends: 694739 [2023-12-19 04:02:59,108 INFO L226 Difference]: Without dead ends: 399002 [2023-12-19 04:02:59,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:02:59,216 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 871 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2839 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 3425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 2839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:02:59,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1473 Invalid, 3425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 2839 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:02:59,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399002 states. [2023-12-19 04:03:03,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399002 to 397343. [2023-12-19 04:03:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397343 states, 397342 states have (on average 1.0487866875386946) internal successors, (416727), 397342 states have internal predecessors, (416727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:03:04,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397343 states to 397343 states and 416727 transitions. [2023-12-19 04:03:04,578 INFO L78 Accepts]: Start accepts. Automaton has 397343 states and 416727 transitions. Word has length 515 [2023-12-19 04:03:04,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:03:04,579 INFO L495 AbstractCegarLoop]: Abstraction has 397343 states and 416727 transitions. [2023-12-19 04:03:04,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:03:04,579 INFO L276 IsEmpty]: Start isEmpty. Operand 397343 states and 416727 transitions. [2023-12-19 04:03:04,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-12-19 04:03:04,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:03:04,586 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-12-19 04:03:04,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 04:03:04,592 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:03:04,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:03:04,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1176108756, now seen corresponding path program 1 times [2023-12-19 04:03:04,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:03:04,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503855501] [2023-12-19 04:03:04,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:03:04,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:03:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:03:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 753 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-19 04:03:05,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:03:05,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503855501] [2023-12-19 04:03:05,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503855501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:03:05,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:03:05,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:03:05,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850813416] [2023-12-19 04:03:05,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:03:05,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:03:05,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:03:05,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:03:05,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:03:05,353 INFO L87 Difference]: Start difference. First operand 397343 states and 416727 transitions. Second operand has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:03:14,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:03:14,054 INFO L93 Difference]: Finished difference Result 979988 states and 1028680 transitions. [2023-12-19 04:03:14,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:03:14,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 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 516 [2023-12-19 04:03:14,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:03:14,984 INFO L225 Difference]: With dead ends: 979988 [2023-12-19 04:03:14,985 INFO L226 Difference]: Without dead ends: 582645 [2023-12-19 04:03:15,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:03:15,141 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 1741 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 6399 mSolverCounterSat, 1102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 7501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1102 IncrementalHoareTripleChecker+Valid, 6399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:03:15,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1741 Valid, 874 Invalid, 7501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1102 Valid, 6399 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-19 04:03:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582645 states. [2023-12-19 04:03:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582645 to 531194. [2023-12-19 04:03:21,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531194 states, 531193 states have (on average 1.0463315593390725) internal successors, (555804), 531193 states have internal predecessors, (555804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:03:22,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531194 states to 531194 states and 555804 transitions. [2023-12-19 04:03:22,847 INFO L78 Accepts]: Start accepts. Automaton has 531194 states and 555804 transitions. Word has length 516 [2023-12-19 04:03:22,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:03:22,847 INFO L495 AbstractCegarLoop]: Abstraction has 531194 states and 555804 transitions. [2023-12-19 04:03:22,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:03:22,847 INFO L276 IsEmpty]: Start isEmpty. Operand 531194 states and 555804 transitions. [2023-12-19 04:03:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2023-12-19 04:03:22,855 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:03:22,856 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-12-19 04:03:22,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 04:03:22,856 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:03:22,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:03:22,857 INFO L85 PathProgramCache]: Analyzing trace with hash 191804598, now seen corresponding path program 1 times [2023-12-19 04:03:22,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:03:22,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040236594] [2023-12-19 04:03:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:03:22,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:03:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:03:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 980 proven. 75 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-12-19 04:03:23,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:03:23,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040236594] [2023-12-19 04:03:23,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040236594] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:03:23,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509230130] [2023-12-19 04:03:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:03:23,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:03:23,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:03:23,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 04:03:23,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 04:03:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:03:23,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 04:03:23,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:03:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 1118 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-12-19 04:03:24,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:03:24,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509230130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:03:24,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:03:24,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-12-19 04:03:24,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347154168] [2023-12-19 04:03:24,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:03:24,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:03:24,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:03:24,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:03:24,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:03:24,393 INFO L87 Difference]: Start difference. First operand 531194 states and 555804 transitions. Second operand has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:03:30,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:03:30,940 INFO L93 Difference]: Finished difference Result 1051378 states and 1100486 transitions. [2023-12-19 04:03:30,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:03:30,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 561 [2023-12-19 04:03:30,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:03:32,055 INFO L225 Difference]: With dead ends: 1051378 [2023-12-19 04:03:32,055 INFO L226 Difference]: Without dead ends: 537497 [2023-12-19 04:03:32,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:03:32,217 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 1621 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 4533 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 4884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 4533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:03:32,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 910 Invalid, 4884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 4533 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-19 04:03:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537497 states.