/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 04:35:47,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 04:35:47,346 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 04:35:47,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 04:35:47,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 04:35:47,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 04:35:47,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 04:35:47,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 04:35:47,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 04:35:47,377 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 04:35:47,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 04:35:47,378 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 04:35:47,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 04:35:47,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 04:35:47,380 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 04:35:47,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 04:35:47,380 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 04:35:47,381 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 04:35:47,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 04:35:47,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 04:35:47,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 04:35:47,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 04:35:47,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 04:35:47,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 04:35:47,382 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 04:35:47,382 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 04:35:47,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 04:35:47,383 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 04:35:47,383 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 04:35:47,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 04:35:47,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 04:35:47,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 04:35:47,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:35:47,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 04:35:47,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 04:35:47,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 04:35:47,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 04:35:47,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 04:35:47,386 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 04:35:47,386 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 04:35:47,386 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 04:35:47,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 04:35:47,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 04:35:47,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 04:35:47,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 04:35:47,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 04:35:47,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 04:35:47,612 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 04:35:47,612 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 04:35:47,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58.c [2023-12-19 04:35:48,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 04:35:49,055 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 04:35:49,056 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label58.c [2023-12-19 04:35:49,076 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c16f6e6b0/2138ed0064ed44a59ce999641ea1f380/FLAGcd8f1bda0 [2023-12-19 04:35:49,090 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c16f6e6b0/2138ed0064ed44a59ce999641ea1f380 [2023-12-19 04:35:49,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 04:35:49,094 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 04:35:49,097 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 04:35:49,097 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 04:35:49,100 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 04:35:49,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:35:49" (1/1) ... [2023-12-19 04:35:49,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa0f427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:49, skipping insertion in model container [2023-12-19 04:35:49,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:35:49" (1/1) ... [2023-12-19 04:35:49,217 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 04:35:49,421 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label58.c[6741,6754] [2023-12-19 04:35:49,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:35:49,781 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 04:35:49,800 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label58.c[6741,6754] [2023-12-19 04:35:50,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:35:50,029 INFO L206 MainTranslator]: Completed translation [2023-12-19 04:35:50,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50 WrapperNode [2023-12-19 04:35:50,030 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 04:35:50,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 04:35:50,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 04:35:50,031 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 04:35:50,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50" (1/1) ... [2023-12-19 04:35:50,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50" (1/1) ... [2023-12-19 04:35:50,236 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-19 04:35:50,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 04:35:50,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 04:35:50,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 04:35:50,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 04:35:50,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50" (1/1) ... [2023-12-19 04:35:50,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50" (1/1) ... [2023-12-19 04:35:50,282 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50" (1/1) ... [2023-12-19 04:35:50,467 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 04:35:50,467 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50" (1/1) ... [2023-12-19 04:35:50,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50" (1/1) ... [2023-12-19 04:35:50,637 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50" (1/1) ... [2023-12-19 04:35:50,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50" (1/1) ... [2023-12-19 04:35:50,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50" (1/1) ... [2023-12-19 04:35:50,709 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50" (1/1) ... [2023-12-19 04:35:50,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 04:35:50,756 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 04:35:50,756 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 04:35:50,756 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 04:35:50,758 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50" (1/1) ... [2023-12-19 04:35:50,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:35:50,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:35:50,783 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 04:35:50,849 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 04:35:50,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 04:35:50,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 04:35:50,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 04:35:50,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 04:35:50,908 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 04:35:50,910 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 04:35:53,483 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 04:35:53,532 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 04:35:53,532 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 04:35:53,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:35:53 BoogieIcfgContainer [2023-12-19 04:35:53,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 04:35:53,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 04:35:53,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 04:35:53,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 04:35:53,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:35:49" (1/3) ... [2023-12-19 04:35:53,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e1f5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:35:53, skipping insertion in model container [2023-12-19 04:35:53,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:35:50" (2/3) ... [2023-12-19 04:35:53,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e1f5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:35:53, skipping insertion in model container [2023-12-19 04:35:53,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:35:53" (3/3) ... [2023-12-19 04:35:53,541 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label58.c [2023-12-19 04:35:53,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 04:35:53,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 04:35:53,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 04:35:53,618 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;@20710e57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 04:35:53,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 04:35:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:53,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-19 04:35:53,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:35:53,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:35:53,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:35:53,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:35:53,634 INFO L85 PathProgramCache]: Analyzing trace with hash -489742523, now seen corresponding path program 1 times [2023-12-19 04:35:53,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:35:53,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810975483] [2023-12-19 04:35:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:35:53,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:35:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:35:53,812 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 04:35:53,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:35:53,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810975483] [2023-12-19 04:35:53,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810975483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:35:53,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:35:53,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:35:53,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335124479] [2023-12-19 04:35:53,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:35:53,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 04:35:53,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:35:53,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 04:35:53,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:35:53,845 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 04:35:53,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:35:53,903 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-19 04:35:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 04:35:53,905 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-19 04:35:53,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:35:53,915 INFO L225 Difference]: With dead ends: 1055 [2023-12-19 04:35:53,916 INFO L226 Difference]: Without dead ends: 526 [2023-12-19 04:35:53,920 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 04:35:53,923 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:35:53,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 04:35:53,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-19 04:35:53,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-19 04:35:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-19 04:35:53,965 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 44 [2023-12-19 04:35:53,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:35:53,965 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-19 04:35:53,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 04:35:53,965 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-19 04:35:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-19 04:35:53,966 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:35:53,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:35:53,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 04:35:53,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:35:53,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:35:53,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1473960833, now seen corresponding path program 1 times [2023-12-19 04:35:53,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:35:53,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628271544] [2023-12-19 04:35:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:35:53,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:35:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:35:54,094 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 04:35:54,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:35:54,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628271544] [2023-12-19 04:35:54,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628271544] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:35:54,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:35:54,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:35:54,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004566467] [2023-12-19 04:35:54,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:35:54,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:35:54,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:35:54,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:35:54,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:35:54,097 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 04:35:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:35:56,157 INFO L93 Difference]: Finished difference Result 1522 states and 2728 transitions. [2023-12-19 04:35:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:35:56,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-19 04:35:56,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:35:56,170 INFO L225 Difference]: With dead ends: 1522 [2023-12-19 04:35:56,170 INFO L226 Difference]: Without dead ends: 997 [2023-12-19 04:35:56,174 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 04:35:56,176 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 466 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:35:56,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 239 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 04:35:56,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-19 04:35:56,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2023-12-19 04:35:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.7081632653061225) internal successors, (1674), 980 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:35:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1674 transitions. [2023-12-19 04:35:56,208 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1674 transitions. Word has length 44 [2023-12-19 04:35:56,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:35:56,208 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1674 transitions. [2023-12-19 04:35:56,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 04:35:56,209 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1674 transitions. [2023-12-19 04:35:56,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-19 04:35:56,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:35:56,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:35:56,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 04:35:56,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:35:56,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:35:56,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2128004469, now seen corresponding path program 1 times [2023-12-19 04:35:56,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:35:56,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369614133] [2023-12-19 04:35:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:35:56,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:35:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:35:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:35:56,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:35:56,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369614133] [2023-12-19 04:35:56,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369614133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:35:56,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:35:56,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:35:56,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071538163] [2023-12-19 04:35:56,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:35:56,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:35:56,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:35:56,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:35:56,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:35:56,357 INFO L87 Difference]: Start difference. First operand 981 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:35:58,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:35:58,262 INFO L93 Difference]: Finished difference Result 2842 states and 4881 transitions. [2023-12-19 04:35:58,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:35:58,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-12-19 04:35:58,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:35:58,269 INFO L225 Difference]: With dead ends: 2842 [2023-12-19 04:35:58,269 INFO L226 Difference]: Without dead ends: 1862 [2023-12-19 04:35:58,271 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 04:35:58,272 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 409 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:35:58,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 493 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:35:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2023-12-19 04:35:58,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1856. [2023-12-19 04:35:58,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.4555256064690028) internal successors, (2700), 1855 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states 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 04:35:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2700 transitions. [2023-12-19 04:35:58,313 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2700 transitions. Word has length 109 [2023-12-19 04:35:58,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:35:58,318 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2700 transitions. [2023-12-19 04:35:58,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 04:35:58,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2700 transitions. [2023-12-19 04:35:58,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 04:35:58,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:35:58,327 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 04:35:58,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 04:35:58,327 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:35:58,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:35:58,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1414150428, now seen corresponding path program 1 times [2023-12-19 04:35:58,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:35:58,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739223322] [2023-12-19 04:35:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:35:58,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:35:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:35:58,527 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:35:58,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:35:58,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739223322] [2023-12-19 04:35:58,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739223322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:35:58,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:35:58,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:35:58,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303775297] [2023-12-19 04:35:58,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:35:58,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:35:58,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:35:58,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:35:58,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:35:58,529 INFO L87 Difference]: Start difference. First operand 1856 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:00,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:00,221 INFO L93 Difference]: Finished difference Result 5424 states and 7894 transitions. [2023-12-19 04:36:00,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:00,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2023-12-19 04:36:00,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:00,231 INFO L225 Difference]: With dead ends: 5424 [2023-12-19 04:36:00,232 INFO L226 Difference]: Without dead ends: 3569 [2023-12-19 04:36:00,237 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 04:36:00,242 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 387 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:00,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:36:00,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2023-12-19 04:36:00,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 2713. [2023-12-19 04:36:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 1.3160029498525074) internal successors, (3569), 2712 states have internal predecessors, (3569), 0 states have call successors, (0), 0 states 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 04:36:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 3569 transitions. [2023-12-19 04:36:00,293 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 3569 transitions. Word has length 115 [2023-12-19 04:36:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:00,295 INFO L495 AbstractCegarLoop]: Abstraction has 2713 states and 3569 transitions. [2023-12-19 04:36:00,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 3569 transitions. [2023-12-19 04:36:00,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-19 04:36:00,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:00,301 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-12-19 04:36:00,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 04:36:00,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:00,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:00,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1877688364, now seen corresponding path program 1 times [2023-12-19 04:36:00,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:00,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358492232] [2023-12-19 04:36:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:00,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:36:00,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:00,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358492232] [2023-12-19 04:36:00,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358492232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:00,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:00,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 04:36:00,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410932364] [2023-12-19 04:36:00,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:00,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:36:00,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:00,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:36:00,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:36:00,841 INFO L87 Difference]: Start difference. First operand 2713 states and 3569 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 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 04:36:03,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:03,153 INFO L93 Difference]: Finished difference Result 7148 states and 9642 transitions. [2023-12-19 04:36:03,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:36:03,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 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 192 [2023-12-19 04:36:03,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:03,166 INFO L225 Difference]: With dead ends: 7148 [2023-12-19 04:36:03,166 INFO L226 Difference]: Without dead ends: 4436 [2023-12-19 04:36:03,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:36:03,171 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 599 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:03,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 899 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:36:03,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2023-12-19 04:36:03,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 4423. [2023-12-19 04:36:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4423 states, 4422 states have (on average 1.2912709181365898) internal successors, (5710), 4422 states have internal predecessors, (5710), 0 states have call successors, (0), 0 states 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 04:36:03,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4423 states to 4423 states and 5710 transitions. [2023-12-19 04:36:03,236 INFO L78 Accepts]: Start accepts. Automaton has 4423 states and 5710 transitions. Word has length 192 [2023-12-19 04:36:03,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:03,236 INFO L495 AbstractCegarLoop]: Abstraction has 4423 states and 5710 transitions. [2023-12-19 04:36:03,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 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 04:36:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4423 states and 5710 transitions. [2023-12-19 04:36:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-19 04:36:03,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:03,238 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-19 04:36:03,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 04:36:03,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:03,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:03,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1837089277, now seen corresponding path program 1 times [2023-12-19 04:36:03,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:03,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942881166] [2023-12-19 04:36:03,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:03,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-19 04:36:03,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942881166] [2023-12-19 04:36:03,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942881166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:03,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:03,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:03,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642716497] [2023-12-19 04:36:03,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:03,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:03,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:03,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:03,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:03,469 INFO L87 Difference]: Start difference. First operand 4423 states and 5710 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 04:36:05,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:05,594 INFO L93 Difference]: Finished difference Result 10592 states and 13803 transitions. [2023-12-19 04:36:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:05,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 198 [2023-12-19 04:36:05,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:05,622 INFO L225 Difference]: With dead ends: 10592 [2023-12-19 04:36:05,622 INFO L226 Difference]: Without dead ends: 6170 [2023-12-19 04:36:05,628 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 04:36:05,629 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 507 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:05,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 238 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 04:36:05,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2023-12-19 04:36:05,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 6152. [2023-12-19 04:36:05,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6152 states, 6151 states have (on average 1.3040156072183384) internal successors, (8021), 6151 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states 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 04:36:05,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6152 states to 6152 states and 8021 transitions. [2023-12-19 04:36:05,737 INFO L78 Accepts]: Start accepts. Automaton has 6152 states and 8021 transitions. Word has length 198 [2023-12-19 04:36:05,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:05,737 INFO L495 AbstractCegarLoop]: Abstraction has 6152 states and 8021 transitions. [2023-12-19 04:36:05,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 04:36:05,738 INFO L276 IsEmpty]: Start isEmpty. Operand 6152 states and 8021 transitions. [2023-12-19 04:36:05,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-19 04:36:05,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:05,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:05,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 04:36:05,741 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:05,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:05,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1970944771, now seen corresponding path program 1 times [2023-12-19 04:36:05,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:05,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547141618] [2023-12-19 04:36:05,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:05,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 85 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:36:06,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547141618] [2023-12-19 04:36:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547141618] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:36:06,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837887732] [2023-12-19 04:36:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:06,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:36:06,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:36:06,118 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 04:36:06,121 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 04:36:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:06,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-19 04:36:06,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:36:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 85 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:36:06,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:36:06,886 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:36:06,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837887732] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-19 04:36:06,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-19 04:36:06,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-12-19 04:36:06,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246856472] [2023-12-19 04:36:06,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:06,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:36:06,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:06,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:36:06,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:36:06,888 INFO L87 Difference]: Start difference. First operand 6152 states and 8021 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:09,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:09,891 INFO L93 Difference]: Finished difference Result 19996 states and 26779 transitions. [2023-12-19 04:36:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:36:09,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2023-12-19 04:36:09,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:09,940 INFO L225 Difference]: With dead ends: 19996 [2023-12-19 04:36:09,940 INFO L226 Difference]: Without dead ends: 12536 [2023-12-19 04:36:09,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 04:36:09,951 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 847 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 823 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:09,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 165 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [823 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 04:36:09,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12536 states. [2023-12-19 04:36:10,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12536 to 12530. [2023-12-19 04:36:10,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12530 states, 12529 states have (on average 1.228988746109027) internal successors, (15398), 12529 states have internal predecessors, (15398), 0 states have call successors, (0), 0 states 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 04:36:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12530 states to 12530 states and 15398 transitions. [2023-12-19 04:36:10,144 INFO L78 Accepts]: Start accepts. Automaton has 12530 states and 15398 transitions. Word has length 264 [2023-12-19 04:36:10,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:10,144 INFO L495 AbstractCegarLoop]: Abstraction has 12530 states and 15398 transitions. [2023-12-19 04:36:10,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:10,145 INFO L276 IsEmpty]: Start isEmpty. Operand 12530 states and 15398 transitions. [2023-12-19 04:36:10,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2023-12-19 04:36:10,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:10,148 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:10,167 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 04:36:10,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:36:10,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:10,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:10,357 INFO L85 PathProgramCache]: Analyzing trace with hash 705650872, now seen corresponding path program 1 times [2023-12-19 04:36:10,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:10,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572308446] [2023-12-19 04:36:10,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:10,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:36:10,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:10,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572308446] [2023-12-19 04:36:10,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572308446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:10,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:10,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221833935] [2023-12-19 04:36:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:10,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:10,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:10,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:10,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:10,582 INFO L87 Difference]: Start difference. First operand 12530 states and 15398 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 04:36:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:12,397 INFO L93 Difference]: Finished difference Result 30194 states and 36858 transitions. [2023-12-19 04:36:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:12,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 301 [2023-12-19 04:36:12,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:12,425 INFO L225 Difference]: With dead ends: 30194 [2023-12-19 04:36:12,425 INFO L226 Difference]: Without dead ends: 16815 [2023-12-19 04:36:12,437 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 04:36:12,438 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 413 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:12,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 856 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:36:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16815 states. [2023-12-19 04:36:12,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16815 to 16804. [2023-12-19 04:36:12,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16804 states, 16803 states have (on average 1.1906802356722015) internal successors, (20007), 16803 states have internal predecessors, (20007), 0 states have call successors, (0), 0 states 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 04:36:12,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16804 states to 16804 states and 20007 transitions. [2023-12-19 04:36:12,630 INFO L78 Accepts]: Start accepts. Automaton has 16804 states and 20007 transitions. Word has length 301 [2023-12-19 04:36:12,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:12,630 INFO L495 AbstractCegarLoop]: Abstraction has 16804 states and 20007 transitions. [2023-12-19 04:36:12,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 04:36:12,630 INFO L276 IsEmpty]: Start isEmpty. Operand 16804 states and 20007 transitions. [2023-12-19 04:36:12,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-19 04:36:12,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:12,635 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:12,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 04:36:12,635 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:12,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:12,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1682495600, now seen corresponding path program 1 times [2023-12-19 04:36:12,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:12,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250246476] [2023-12-19 04:36:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:12,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:12,903 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:36:12,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:12,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250246476] [2023-12-19 04:36:12,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250246476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:12,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:12,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:12,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407309025] [2023-12-19 04:36:12,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:12,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:12,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:12,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:12,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:12,905 INFO L87 Difference]: Start difference. First operand 16804 states and 20007 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states 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 04:36:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:14,576 INFO L93 Difference]: Finished difference Result 40834 states and 48523 transitions. [2023-12-19 04:36:14,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:14,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 347 [2023-12-19 04:36:14,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:14,609 INFO L225 Difference]: With dead ends: 40834 [2023-12-19 04:36:14,610 INFO L226 Difference]: Without dead ends: 21899 [2023-12-19 04:36:14,625 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 04:36:14,626 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 374 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:14,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 807 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:36:14,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21899 states. [2023-12-19 04:36:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21899 to 21893. [2023-12-19 04:36:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21893 states, 21892 states have (on average 1.131828978622328) internal successors, (24778), 21892 states have internal predecessors, (24778), 0 states have call successors, (0), 0 states 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 04:36:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21893 states to 21893 states and 24778 transitions. [2023-12-19 04:36:14,995 INFO L78 Accepts]: Start accepts. Automaton has 21893 states and 24778 transitions. Word has length 347 [2023-12-19 04:36:14,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:14,996 INFO L495 AbstractCegarLoop]: Abstraction has 21893 states and 24778 transitions. [2023-12-19 04:36:15,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states 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 04:36:15,003 INFO L276 IsEmpty]: Start isEmpty. Operand 21893 states and 24778 transitions. [2023-12-19 04:36:15,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-19 04:36:15,017 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:15,018 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:15,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 04:36:15,018 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:15,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash 15572169, now seen corresponding path program 1 times [2023-12-19 04:36:15,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:15,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140989501] [2023-12-19 04:36:15,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:15,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:15,389 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-19 04:36:15,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:15,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140989501] [2023-12-19 04:36:15,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140989501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:15,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:15,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:15,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078486515] [2023-12-19 04:36:15,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:15,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:15,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:15,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:15,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:15,391 INFO L87 Difference]: Start difference. First operand 21893 states and 24778 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 04:36:16,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:16,865 INFO L93 Difference]: Finished difference Result 48459 states and 55072 transitions. [2023-12-19 04:36:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:16,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 372 [2023-12-19 04:36:16,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:16,905 INFO L225 Difference]: With dead ends: 48459 [2023-12-19 04:36:16,905 INFO L226 Difference]: Without dead ends: 26567 [2023-12-19 04:36:16,925 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 04:36:16,926 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 369 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:16,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 787 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:36:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26567 states. [2023-12-19 04:36:17,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26567 to 26567. [2023-12-19 04:36:17,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26567 states, 26566 states have (on average 1.1179703380260484) internal successors, (29700), 26566 states have internal predecessors, (29700), 0 states have call successors, (0), 0 states 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 04:36:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26567 states to 26567 states and 29700 transitions. [2023-12-19 04:36:17,190 INFO L78 Accepts]: Start accepts. Automaton has 26567 states and 29700 transitions. Word has length 372 [2023-12-19 04:36:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:17,190 INFO L495 AbstractCegarLoop]: Abstraction has 26567 states and 29700 transitions. [2023-12-19 04:36:17,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 04:36:17,191 INFO L276 IsEmpty]: Start isEmpty. Operand 26567 states and 29700 transitions. [2023-12-19 04:36:17,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2023-12-19 04:36:17,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:17,197 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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 04:36:17,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 04:36:17,198 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:17,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:17,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1858281297, now seen corresponding path program 1 times [2023-12-19 04:36:17,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:17,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118321552] [2023-12-19 04:36:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-19 04:36:17,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:17,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118321552] [2023-12-19 04:36:17,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118321552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:17,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:17,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:17,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321421224] [2023-12-19 04:36:17,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:17,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:17,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:17,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:17,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:17,655 INFO L87 Difference]: Start difference. First operand 26567 states and 29700 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:19,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:19,180 INFO L93 Difference]: Finished difference Result 64199 states and 72103 transitions. [2023-12-19 04:36:19,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:19,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2023-12-19 04:36:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:19,280 INFO L225 Difference]: With dead ends: 64199 [2023-12-19 04:36:19,280 INFO L226 Difference]: Without dead ends: 35081 [2023-12-19 04:36:19,318 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 04:36:19,320 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 288 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:19,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 739 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:36:19,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35081 states. [2023-12-19 04:36:19,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35081 to 29530. [2023-12-19 04:36:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29530 states, 29529 states have (on average 1.100985471908971) internal successors, (32511), 29529 states have internal predecessors, (32511), 0 states have call successors, (0), 0 states 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 04:36:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29530 states to 29530 states and 32511 transitions. [2023-12-19 04:36:19,685 INFO L78 Accepts]: Start accepts. Automaton has 29530 states and 32511 transitions. Word has length 382 [2023-12-19 04:36:19,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:19,685 INFO L495 AbstractCegarLoop]: Abstraction has 29530 states and 32511 transitions. [2023-12-19 04:36:19,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:36:19,685 INFO L276 IsEmpty]: Start isEmpty. Operand 29530 states and 32511 transitions. [2023-12-19 04:36:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-12-19 04:36:19,694 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:19,695 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:36:19,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 04:36:19,695 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:19,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:19,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1629144933, now seen corresponding path program 1 times [2023-12-19 04:36:19,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:19,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368984837] [2023-12-19 04:36:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:19,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:20,228 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-19 04:36:20,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:20,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368984837] [2023-12-19 04:36:20,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368984837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:20,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:20,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:20,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570175096] [2023-12-19 04:36:20,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:20,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:20,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:20,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:20,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:20,230 INFO L87 Difference]: Start difference. First operand 29530 states and 32511 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 04:36:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:22,024 INFO L93 Difference]: Finished difference Result 67600 states and 74479 transitions. [2023-12-19 04:36:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:22,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 407 [2023-12-19 04:36:22,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:22,067 INFO L225 Difference]: With dead ends: 67600 [2023-12-19 04:36:22,067 INFO L226 Difference]: Without dead ends: 38071 [2023-12-19 04:36:22,079 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 04:36:22,080 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 465 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:22,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 167 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:36:22,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38071 states. [2023-12-19 04:36:22,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38071 to 29953. [2023-12-19 04:36:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29953 states, 29952 states have (on average 1.1005608974358974) internal successors, (32964), 29952 states have internal predecessors, (32964), 0 states have call successors, (0), 0 states 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 04:36:22,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29953 states to 29953 states and 32964 transitions. [2023-12-19 04:36:22,449 INFO L78 Accepts]: Start accepts. Automaton has 29953 states and 32964 transitions. Word has length 407 [2023-12-19 04:36:22,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:22,449 INFO L495 AbstractCegarLoop]: Abstraction has 29953 states and 32964 transitions. [2023-12-19 04:36:22,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 04:36:22,449 INFO L276 IsEmpty]: Start isEmpty. Operand 29953 states and 32964 transitions. [2023-12-19 04:36:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2023-12-19 04:36:22,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:22,468 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:22,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 04:36:22,469 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:22,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:22,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1330733117, now seen corresponding path program 1 times [2023-12-19 04:36:22,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:22,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929299706] [2023-12-19 04:36:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:22,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 118 proven. 241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:36:23,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:23,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929299706] [2023-12-19 04:36:23,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929299706] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:36:23,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024745310] [2023-12-19 04:36:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:23,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:36:23,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:36:23,211 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 04:36:23,213 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 04:36:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:23,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-19 04:36:23,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:36:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 118 proven. 241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:36:23,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 04:36:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 316 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:36:24,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024745310] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 04:36:24,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 04:36:24,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-12-19 04:36:24,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355327817] [2023-12-19 04:36:24,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 04:36:24,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-19 04:36:24,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-19 04:36:24,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-12-19 04:36:24,391 INFO L87 Difference]: Start difference. First operand 29953 states and 32964 transitions. Second operand has 10 states, 10 states have (on average 103.5) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:36:29,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:29,501 INFO L93 Difference]: Finished difference Result 88886 states and 97578 transitions. [2023-12-19 04:36:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 04:36:29,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 103.5) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 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 518 [2023-12-19 04:36:29,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:29,574 INFO L225 Difference]: With dead ends: 88886 [2023-12-19 04:36:29,575 INFO L226 Difference]: Without dead ends: 57659 [2023-12-19 04:36:29,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1039 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-12-19 04:36:29,621 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 2276 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 7758 mSolverCounterSat, 609 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 8367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 609 IncrementalHoareTripleChecker+Valid, 7758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:29,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 432 Invalid, 8367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [609 Valid, 7758 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-19 04:36:29,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57659 states. [2023-12-19 04:36:30,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57659 to 36361. [2023-12-19 04:36:30,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36361 states, 36360 states have (on average 1.0971947194719471) internal successors, (39894), 36360 states have internal predecessors, (39894), 0 states have call successors, (0), 0 states 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 04:36:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36361 states to 36361 states and 39894 transitions. [2023-12-19 04:36:30,428 INFO L78 Accepts]: Start accepts. Automaton has 36361 states and 39894 transitions. Word has length 518 [2023-12-19 04:36:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:30,429 INFO L495 AbstractCegarLoop]: Abstraction has 36361 states and 39894 transitions. [2023-12-19 04:36:30,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.5) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 04:36:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 36361 states and 39894 transitions. [2023-12-19 04:36:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2023-12-19 04:36:30,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:30,476 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:30,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 04:36:30,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 04:36:30,683 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:30,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:30,683 INFO L85 PathProgramCache]: Analyzing trace with hash -178225859, now seen corresponding path program 1 times [2023-12-19 04:36:30,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:30,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600637809] [2023-12-19 04:36:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:30,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 04:36:31,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:31,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600637809] [2023-12-19 04:36:31,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600637809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:31,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:31,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:36:31,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268201847] [2023-12-19 04:36:31,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:31,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:31,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:31,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:31,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:31,111 INFO L87 Difference]: Start difference. First operand 36361 states and 39894 transitions. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 04:36:32,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:32,158 INFO L93 Difference]: Finished difference Result 71438 states and 78400 transitions. [2023-12-19 04:36:32,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:32,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 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 634 [2023-12-19 04:36:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:32,320 INFO L225 Difference]: With dead ends: 71438 [2023-12-19 04:36:32,320 INFO L226 Difference]: Without dead ends: 35502 [2023-12-19 04:36:32,331 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 04:36:32,332 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 413 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:32,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 102 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-19 04:36:32,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35502 states. [2023-12-19 04:36:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35502 to 35496. [2023-12-19 04:36:32,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35496 states, 35495 states have (on average 1.096238906888294) internal successors, (38911), 35495 states have internal predecessors, (38911), 0 states have call successors, (0), 0 states 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 04:36:32,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35496 states to 35496 states and 38911 transitions. [2023-12-19 04:36:32,789 INFO L78 Accepts]: Start accepts. Automaton has 35496 states and 38911 transitions. Word has length 634 [2023-12-19 04:36:32,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:32,790 INFO L495 AbstractCegarLoop]: Abstraction has 35496 states and 38911 transitions. [2023-12-19 04:36:32,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 04:36:32,790 INFO L276 IsEmpty]: Start isEmpty. Operand 35496 states and 38911 transitions. [2023-12-19 04:36:32,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2023-12-19 04:36:32,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:32,811 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:32,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 04:36:32,812 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:32,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1537983450, now seen corresponding path program 1 times [2023-12-19 04:36:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:32,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085995759] [2023-12-19 04:36:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:32,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:32,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:33,176 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-19 04:36:33,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:33,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085995759] [2023-12-19 04:36:33,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085995759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:33,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:33,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:33,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898320060] [2023-12-19 04:36:33,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:33,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:33,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:33,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:33,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:33,179 INFO L87 Difference]: Start difference. First operand 35496 states and 38911 transitions. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 04:36:34,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:34,808 INFO L93 Difference]: Finished difference Result 80343 states and 88596 transitions. [2023-12-19 04:36:34,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:34,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 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 660 [2023-12-19 04:36:34,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:34,865 INFO L225 Difference]: With dead ends: 80343 [2023-12-19 04:36:34,865 INFO L226 Difference]: Without dead ends: 45273 [2023-12-19 04:36:34,889 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 04:36:34,890 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 438 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:34,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 360 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 04:36:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45273 states. [2023-12-19 04:36:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45273 to 42719. [2023-12-19 04:36:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42719 states, 42718 states have (on average 1.0914134556861277) internal successors, (46623), 42718 states have internal predecessors, (46623), 0 states have call successors, (0), 0 states 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 04:36:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42719 states to 42719 states and 46623 transitions. [2023-12-19 04:36:35,391 INFO L78 Accepts]: Start accepts. Automaton has 42719 states and 46623 transitions. Word has length 660 [2023-12-19 04:36:35,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:35,392 INFO L495 AbstractCegarLoop]: Abstraction has 42719 states and 46623 transitions. [2023-12-19 04:36:35,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 04:36:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand 42719 states and 46623 transitions. [2023-12-19 04:36:35,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2023-12-19 04:36:35,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:35,411 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:35,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 04:36:35,411 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:35,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:35,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1403340631, now seen corresponding path program 1 times [2023-12-19 04:36:35,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:35,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551436342] [2023-12-19 04:36:35,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:35,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:36,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 841 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-19 04:36:36,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:36,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551436342] [2023-12-19 04:36:36,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551436342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:36,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:36,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:36:36,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442223740] [2023-12-19 04:36:36,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:36,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:36:36,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:36,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:36:36,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:36:36,140 INFO L87 Difference]: Start difference. First operand 42719 states and 46623 transitions. Second operand has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 04:36:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:38,723 INFO L93 Difference]: Finished difference Result 102928 states and 112736 transitions. [2023-12-19 04:36:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:36:38,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 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 697 [2023-12-19 04:36:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:38,796 INFO L225 Difference]: With dead ends: 102928 [2023-12-19 04:36:38,797 INFO L226 Difference]: Without dead ends: 60635 [2023-12-19 04:36:38,813 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 04:36:38,816 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 816 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:38,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 184 Invalid, 2662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-19 04:36:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60635 states. [2023-12-19 04:36:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60635 to 56373. [2023-12-19 04:36:39,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56373 states, 56372 states have (on average 1.1001738451713616) internal successors, (62019), 56372 states have internal predecessors, (62019), 0 states have call successors, (0), 0 states 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 04:36:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56373 states to 56373 states and 62019 transitions. [2023-12-19 04:36:39,630 INFO L78 Accepts]: Start accepts. Automaton has 56373 states and 62019 transitions. Word has length 697 [2023-12-19 04:36:39,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:39,630 INFO L495 AbstractCegarLoop]: Abstraction has 56373 states and 62019 transitions. [2023-12-19 04:36:39,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 04:36:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand 56373 states and 62019 transitions. [2023-12-19 04:36:39,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2023-12-19 04:36:39,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:39,650 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:39,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 04:36:39,650 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:39,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:39,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1330978116, now seen corresponding path program 1 times [2023-12-19 04:36:39,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:39,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842883875] [2023-12-19 04:36:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:39,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:40,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 778 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-19 04:36:40,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:40,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842883875] [2023-12-19 04:36:40,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842883875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:40,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:40,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:40,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27132015] [2023-12-19 04:36:40,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:40,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:40,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:40,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:40,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:40,197 INFO L87 Difference]: Start difference. First operand 56373 states and 62019 transitions. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states 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 04:36:42,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:42,138 INFO L93 Difference]: Finished difference Result 124675 states and 137551 transitions. [2023-12-19 04:36:42,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:42,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 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 698 [2023-12-19 04:36:42,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:42,216 INFO L225 Difference]: With dead ends: 124675 [2023-12-19 04:36:42,216 INFO L226 Difference]: Without dead ends: 66170 [2023-12-19 04:36:42,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:42,239 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 431 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:42,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 591 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-19 04:36:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66170 states. [2023-12-19 04:36:43,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66170 to 64460. [2023-12-19 04:36:43,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64460 states, 64459 states have (on average 1.0999239826866691) internal successors, (70900), 64459 states have internal predecessors, (70900), 0 states have call successors, (0), 0 states 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 04:36:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64460 states to 64460 states and 70900 transitions. [2023-12-19 04:36:43,136 INFO L78 Accepts]: Start accepts. Automaton has 64460 states and 70900 transitions. Word has length 698 [2023-12-19 04:36:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:43,137 INFO L495 AbstractCegarLoop]: Abstraction has 64460 states and 70900 transitions. [2023-12-19 04:36:43,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states 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 04:36:43,137 INFO L276 IsEmpty]: Start isEmpty. Operand 64460 states and 70900 transitions. [2023-12-19 04:36:43,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2023-12-19 04:36:43,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:43,173 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:43,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 04:36:43,173 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:43,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:43,174 INFO L85 PathProgramCache]: Analyzing trace with hash 784413559, now seen corresponding path program 1 times [2023-12-19 04:36:43,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:43,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116807920] [2023-12-19 04:36:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:43,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1022 backedges. 750 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 04:36:44,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:44,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116807920] [2023-12-19 04:36:44,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116807920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:44,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:44,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:44,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777690321] [2023-12-19 04:36:44,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:44,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:44,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:44,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:44,176 INFO L87 Difference]: Start difference. First operand 64460 states and 70900 transitions. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 04:36:45,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:45,664 INFO L93 Difference]: Finished difference Result 131047 states and 144048 transitions. [2023-12-19 04:36:45,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:45,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 717 [2023-12-19 04:36:45,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:45,832 INFO L225 Difference]: With dead ends: 131047 [2023-12-19 04:36:45,833 INFO L226 Difference]: Without dead ends: 67013 [2023-12-19 04:36:45,862 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 04:36:45,862 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 114 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:45,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 778 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 04:36:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67013 states. [2023-12-19 04:36:46,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67013 to 66585. [2023-12-19 04:36:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66585 states, 66584 states have (on average 1.0968400817013095) internal successors, (73032), 66584 states have internal predecessors, (73032), 0 states have call successors, (0), 0 states 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 04:36:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66585 states to 66585 states and 73032 transitions. [2023-12-19 04:36:46,752 INFO L78 Accepts]: Start accepts. Automaton has 66585 states and 73032 transitions. Word has length 717 [2023-12-19 04:36:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:46,753 INFO L495 AbstractCegarLoop]: Abstraction has 66585 states and 73032 transitions. [2023-12-19 04:36:46,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 04:36:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 66585 states and 73032 transitions. [2023-12-19 04:36:46,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2023-12-19 04:36:46,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:46,772 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:46,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 04:36:46,773 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:46,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:46,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1852151167, now seen corresponding path program 1 times [2023-12-19 04:36:46,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:46,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501396979] [2023-12-19 04:36:46,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:46,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 817 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-12-19 04:36:47,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:47,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501396979] [2023-12-19 04:36:47,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501396979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:47,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:47,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:47,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848186911] [2023-12-19 04:36:47,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:47,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:47,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:47,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:47,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:47,303 INFO L87 Difference]: Start difference. First operand 66585 states and 73032 transitions. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 04:36:48,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:48,997 INFO L93 Difference]: Finished difference Result 151463 states and 166276 transitions. [2023-12-19 04:36:48,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:48,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 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 721 [2023-12-19 04:36:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:49,104 INFO L225 Difference]: With dead ends: 151463 [2023-12-19 04:36:49,104 INFO L226 Difference]: Without dead ends: 85304 [2023-12-19 04:36:49,253 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 04:36:49,254 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 395 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:49,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 262 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:36:49,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85304 states. [2023-12-19 04:36:50,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85304 to 82323. [2023-12-19 04:36:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82323 states, 82322 states have (on average 1.0897329996841671) internal successors, (89709), 82322 states have internal predecessors, (89709), 0 states have call successors, (0), 0 states 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 04:36:50,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82323 states to 82323 states and 89709 transitions. [2023-12-19 04:36:50,281 INFO L78 Accepts]: Start accepts. Automaton has 82323 states and 89709 transitions. Word has length 721 [2023-12-19 04:36:50,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:50,282 INFO L495 AbstractCegarLoop]: Abstraction has 82323 states and 89709 transitions. [2023-12-19 04:36:50,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 04:36:50,282 INFO L276 IsEmpty]: Start isEmpty. Operand 82323 states and 89709 transitions. [2023-12-19 04:36:50,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-12-19 04:36:50,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:50,312 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:36:50,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 04:36:50,312 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:50,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:50,313 INFO L85 PathProgramCache]: Analyzing trace with hash -688761868, now seen corresponding path program 1 times [2023-12-19 04:36:50,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:50,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493652257] [2023-12-19 04:36:50,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:50,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 785 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-12-19 04:36:51,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:51,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493652257] [2023-12-19 04:36:51,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493652257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:51,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:51,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:51,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380432417] [2023-12-19 04:36:51,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:51,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:51,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:51,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:51,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:51,251 INFO L87 Difference]: Start difference. First operand 82323 states and 89709 transitions. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 04:36:52,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:52,836 INFO L93 Difference]: Finished difference Result 168471 states and 183278 transitions. [2023-12-19 04:36:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:52,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 751 [2023-12-19 04:36:52,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:52,934 INFO L225 Difference]: With dead ends: 168471 [2023-12-19 04:36:52,934 INFO L226 Difference]: Without dead ends: 86574 [2023-12-19 04:36:52,981 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 04:36:52,982 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 126 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:52,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 742 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 04:36:53,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86574 states. [2023-12-19 04:36:53,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86574 to 86571. [2023-12-19 04:36:53,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86571 states, 86570 states have (on average 1.0804435716761003) internal successors, (93534), 86570 states have internal predecessors, (93534), 0 states have call successors, (0), 0 states 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 04:36:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86571 states to 86571 states and 93534 transitions. [2023-12-19 04:36:54,239 INFO L78 Accepts]: Start accepts. Automaton has 86571 states and 93534 transitions. Word has length 751 [2023-12-19 04:36:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:54,239 INFO L495 AbstractCegarLoop]: Abstraction has 86571 states and 93534 transitions. [2023-12-19 04:36:54,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 04:36:54,240 INFO L276 IsEmpty]: Start isEmpty. Operand 86571 states and 93534 transitions. [2023-12-19 04:36:54,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2023-12-19 04:36:54,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:54,311 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:54,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 04:36:54,311 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:54,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:54,312 INFO L85 PathProgramCache]: Analyzing trace with hash 379483720, now seen corresponding path program 1 times [2023-12-19 04:36:54,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:54,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446293351] [2023-12-19 04:36:54,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:54,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1835 backedges. 841 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2023-12-19 04:36:54,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:54,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446293351] [2023-12-19 04:36:54,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446293351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:54,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:54,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:36:54,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142549076] [2023-12-19 04:36:54,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:54,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:36:54,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:54,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:36:54,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:36:54,828 INFO L87 Difference]: Start difference. First operand 86571 states and 93534 transitions. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 04:36:56,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:36:56,396 INFO L93 Difference]: Finished difference Result 173977 states and 187713 transitions. [2023-12-19 04:36:56,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:36:56,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 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 1037 [2023-12-19 04:36:56,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:36:56,494 INFO L225 Difference]: With dead ends: 173977 [2023-12-19 04:36:56,494 INFO L226 Difference]: Without dead ends: 87831 [2023-12-19 04:36:56,532 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 04:36:56,532 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 449 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:36:56,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 318 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 04:36:56,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87831 states. [2023-12-19 04:36:57,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87831 to 75891. [2023-12-19 04:36:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75891 states, 75890 states have (on average 1.076268283041244) internal successors, (81678), 75890 states have internal predecessors, (81678), 0 states have call successors, (0), 0 states 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 04:36:57,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75891 states to 75891 states and 81678 transitions. [2023-12-19 04:36:57,610 INFO L78 Accepts]: Start accepts. Automaton has 75891 states and 81678 transitions. Word has length 1037 [2023-12-19 04:36:57,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:36:57,611 INFO L495 AbstractCegarLoop]: Abstraction has 75891 states and 81678 transitions. [2023-12-19 04:36:57,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 04:36:57,611 INFO L276 IsEmpty]: Start isEmpty. Operand 75891 states and 81678 transitions. [2023-12-19 04:36:57,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2023-12-19 04:36:57,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:36:57,694 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:36:57,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 04:36:57,695 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:36:57,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:36:57,695 INFO L85 PathProgramCache]: Analyzing trace with hash 282743960, now seen corresponding path program 1 times [2023-12-19 04:36:57,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:36:57,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541611342] [2023-12-19 04:36:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:36:57,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:36:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:36:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1479 backedges. 1190 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-19 04:36:58,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:36:58,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541611342] [2023-12-19 04:36:58,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541611342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:36:58,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:36:58,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:36:58,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217382373] [2023-12-19 04:36:58,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:36:58,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:36:58,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:36:58,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:36:58,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:36:58,522 INFO L87 Difference]: Start difference. First operand 75891 states and 81678 transitions. Second operand has 4 states, 4 states have (on average 223.75) internal successors, (895), 4 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 04:37:00,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:37:00,948 INFO L93 Difference]: Finished difference Result 165009 states and 177374 transitions. [2023-12-19 04:37:00,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:37:00,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 223.75) internal successors, (895), 4 states have internal predecessors, (895), 0 states have call successors, (0), 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 1100 [2023-12-19 04:37:00,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:37:01,044 INFO L225 Difference]: With dead ends: 165009 [2023-12-19 04:37:01,044 INFO L226 Difference]: Without dead ends: 89119 [2023-12-19 04:37:01,077 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 04:37:01,078 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 577 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:37:01,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 695 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-19 04:37:01,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89119 states. [2023-12-19 04:37:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89119 to 78443. [2023-12-19 04:37:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78443 states, 78442 states have (on average 1.0752403049386807) internal successors, (84344), 78442 states have internal predecessors, (84344), 0 states have call successors, (0), 0 states 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 04:37:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78443 states to 78443 states and 84344 transitions. [2023-12-19 04:37:02,232 INFO L78 Accepts]: Start accepts. Automaton has 78443 states and 84344 transitions. Word has length 1100 [2023-12-19 04:37:02,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:37:02,232 INFO L495 AbstractCegarLoop]: Abstraction has 78443 states and 84344 transitions. [2023-12-19 04:37:02,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 223.75) internal successors, (895), 4 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 04:37:02,233 INFO L276 IsEmpty]: Start isEmpty. Operand 78443 states and 84344 transitions. [2023-12-19 04:37:02,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1135 [2023-12-19 04:37:02,305 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:37:02,306 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:37:02,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 04:37:02,307 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:37:02,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:37:02,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1967270267, now seen corresponding path program 1 times [2023-12-19 04:37:02,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:37:02,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421340826] [2023-12-19 04:37:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:37:02,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:37:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:37:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 1262 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-19 04:37:02,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:37:02,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421340826] [2023-12-19 04:37:02,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421340826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:37:02,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:37:02,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:37:02,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545553118] [2023-12-19 04:37:02,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:37:02,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:37:02,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:37:02,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:37:02,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:37:02,886 INFO L87 Difference]: Start difference. First operand 78443 states and 84344 transitions. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:37:04,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:37:04,448 INFO L93 Difference]: Finished difference Result 155603 states and 167305 transitions. [2023-12-19 04:37:04,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:37:04,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1134 [2023-12-19 04:37:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:37:04,564 INFO L225 Difference]: With dead ends: 155603 [2023-12-19 04:37:04,564 INFO L226 Difference]: Without dead ends: 77586 [2023-12-19 04:37:04,600 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 04:37:04,601 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 130 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:37:04,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 663 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 04:37:04,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77586 states. [2023-12-19 04:37:05,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77586 to 75457. [2023-12-19 04:37:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75457 states, 75456 states have (on average 1.0669794317217982) internal successors, (80510), 75456 states have internal predecessors, (80510), 0 states have call successors, (0), 0 states 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 04:37:05,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75457 states to 75457 states and 80510 transitions. [2023-12-19 04:37:05,690 INFO L78 Accepts]: Start accepts. Automaton has 75457 states and 80510 transitions. Word has length 1134 [2023-12-19 04:37:05,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:37:05,691 INFO L495 AbstractCegarLoop]: Abstraction has 75457 states and 80510 transitions. [2023-12-19 04:37:05,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:37:05,691 INFO L276 IsEmpty]: Start isEmpty. Operand 75457 states and 80510 transitions. [2023-12-19 04:37:05,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2023-12-19 04:37:05,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:37:05,772 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 04:37:05,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 04:37:05,772 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:37:05,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:37:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1672860854, now seen corresponding path program 1 times [2023-12-19 04:37:05,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:37:05,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878581372] [2023-12-19 04:37:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:37:05,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:37:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:37:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1994 backedges. 1646 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2023-12-19 04:37:06,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:37:06,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878581372] [2023-12-19 04:37:06,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878581372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:37:06,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:37:06,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 04:37:06,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191666595] [2023-12-19 04:37:06,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:37:06,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 04:37:06,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:37:06,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 04:37:06,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:37:06,640 INFO L87 Difference]: Start difference. First operand 75457 states and 80510 transitions. Second operand has 5 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 04:37:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:37:09,737 INFO L93 Difference]: Finished difference Result 170050 states and 181567 transitions. [2023-12-19 04:37:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 04:37:09,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 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 1144 [2023-12-19 04:37:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:37:09,855 INFO L225 Difference]: With dead ends: 170050 [2023-12-19 04:37:09,856 INFO L226 Difference]: Without dead ends: 94169 [2023-12-19 04:37:09,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:37:09,890 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 783 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 3142 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 3651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 3142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:37:09,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 151 Invalid, 3651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 3142 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 04:37:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94169 states. [2023-12-19 04:37:10,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94169 to 80966. [2023-12-19 04:37:11,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80966 states, 80965 states have (on average 1.0640400172914222) internal successors, (86150), 80965 states have internal predecessors, (86150), 0 states have call successors, (0), 0 states 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 04:37:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80966 states to 80966 states and 86150 transitions. [2023-12-19 04:37:11,143 INFO L78 Accepts]: Start accepts. Automaton has 80966 states and 86150 transitions. Word has length 1144 [2023-12-19 04:37:11,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:37:11,143 INFO L495 AbstractCegarLoop]: Abstraction has 80966 states and 86150 transitions. [2023-12-19 04:37:11,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.2) internal successors, (881), 5 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 04:37:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 80966 states and 86150 transitions. [2023-12-19 04:37:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1213 [2023-12-19 04:37:11,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:37:11,217 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:37:11,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 04:37:11,218 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:37:11,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:37:11,219 INFO L85 PathProgramCache]: Analyzing trace with hash -136010730, now seen corresponding path program 1 times [2023-12-19 04:37:11,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:37:11,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646370414] [2023-12-19 04:37:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:37:11,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:37:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:37:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2470 backedges. 1781 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2023-12-19 04:37:12,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:37:12,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646370414] [2023-12-19 04:37:12,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646370414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:37:12,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:37:12,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:37:12,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262871094] [2023-12-19 04:37:12,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:37:12,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:37:12,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:37:12,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:37:12,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:37:12,222 INFO L87 Difference]: Start difference. First operand 80966 states and 86150 transitions. Second operand has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 04:37:13,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:37:13,912 INFO L93 Difference]: Finished difference Result 163206 states and 173752 transitions. [2023-12-19 04:37:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:37:13,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 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 1212 [2023-12-19 04:37:13,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:37:14,026 INFO L225 Difference]: With dead ends: 163206 [2023-12-19 04:37:14,026 INFO L226 Difference]: Without dead ends: 82666 [2023-12-19 04:37:14,057 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 04:37:14,057 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 128 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:37:14,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 679 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 04:37:14,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82666 states. [2023-12-19 04:37:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82666 to 77133. [2023-12-19 04:37:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77133 states, 77132 states have (on average 1.0576414458331171) internal successors, (81578), 77132 states have internal predecessors, (81578), 0 states have call successors, (0), 0 states 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 04:37:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77133 states to 77133 states and 81578 transitions. [2023-12-19 04:37:15,044 INFO L78 Accepts]: Start accepts. Automaton has 77133 states and 81578 transitions. Word has length 1212 [2023-12-19 04:37:15,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:37:15,044 INFO L495 AbstractCegarLoop]: Abstraction has 77133 states and 81578 transitions. [2023-12-19 04:37:15,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 04:37:15,045 INFO L276 IsEmpty]: Start isEmpty. Operand 77133 states and 81578 transitions. [2023-12-19 04:37:15,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1324 [2023-12-19 04:37:15,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:37:15,343 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:37:15,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 04:37:15,343 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:37:15,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:37:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1924692534, now seen corresponding path program 1 times [2023-12-19 04:37:15,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:37:15,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846311644] [2023-12-19 04:37:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:37:15,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:37:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:37:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 2074 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2023-12-19 04:37:16,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:37:16,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846311644] [2023-12-19 04:37:16,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846311644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:37:16,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:37:16,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:37:16,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281392935] [2023-12-19 04:37:16,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:37:16,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:37:16,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:37:16,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:37:16,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:37:16,536 INFO L87 Difference]: Start difference. First operand 77133 states and 81578 transitions. Second operand has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states 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 04:37:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:37:18,774 INFO L93 Difference]: Finished difference Result 149538 states and 157571 transitions. [2023-12-19 04:37:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:37:18,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 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 1323 [2023-12-19 04:37:18,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:37:18,877 INFO L225 Difference]: With dead ends: 149538 [2023-12-19 04:37:18,877 INFO L226 Difference]: Without dead ends: 72831 [2023-12-19 04:37:18,921 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 04:37:18,922 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 785 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:37:18,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 282 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2642 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-19 04:37:18,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72831 states. [2023-12-19 04:37:19,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72831 to 68151. [2023-12-19 04:37:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68151 states, 68150 states have (on average 1.0483052090975788) internal successors, (71442), 68150 states have internal predecessors, (71442), 0 states have call successors, (0), 0 states 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 04:37:19,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68151 states to 68151 states and 71442 transitions. [2023-12-19 04:37:19,848 INFO L78 Accepts]: Start accepts. Automaton has 68151 states and 71442 transitions. Word has length 1323 [2023-12-19 04:37:19,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:37:19,848 INFO L495 AbstractCegarLoop]: Abstraction has 68151 states and 71442 transitions. [2023-12-19 04:37:19,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.25) internal successors, (613), 4 states have internal predecessors, (613), 0 states have call successors, (0), 0 states 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 04:37:19,849 INFO L276 IsEmpty]: Start isEmpty. Operand 68151 states and 71442 transitions. [2023-12-19 04:37:20,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1365 [2023-12-19 04:37:20,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:37:20,236 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:37:20,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 04:37:20,237 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:37:20,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:37:20,237 INFO L85 PathProgramCache]: Analyzing trace with hash -583145840, now seen corresponding path program 1 times [2023-12-19 04:37:20,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:37:20,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338670647] [2023-12-19 04:37:20,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:37:20,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:37:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:37:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3256 backedges. 2717 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2023-12-19 04:37:21,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:37:21,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338670647] [2023-12-19 04:37:21,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338670647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:37:21,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:37:21,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 04:37:21,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577565890] [2023-12-19 04:37:21,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:37:21,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 04:37:21,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:37:21,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 04:37:21,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-19 04:37:21,543 INFO L87 Difference]: Start difference. First operand 68151 states and 71442 transitions. Second operand has 6 states, 6 states have (on average 159.16666666666666) internal successors, (955), 6 states have internal predecessors, (955), 0 states have call successors, (0), 0 states 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 04:37:25,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:37:25,432 INFO L93 Difference]: Finished difference Result 171234 states and 179712 transitions. [2023-12-19 04:37:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 04:37:25,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 159.16666666666666) internal successors, (955), 6 states have internal predecessors, (955), 0 states have call successors, (0), 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 1364 [2023-12-19 04:37:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:37:25,575 INFO L225 Difference]: With dead ends: 171234 [2023-12-19 04:37:25,575 INFO L226 Difference]: Without dead ends: 103509 [2023-12-19 04:37:25,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-12-19 04:37:25,614 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 2214 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4029 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2214 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 4430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 4029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:37:25,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2214 Valid, 179 Invalid, 4430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 4029 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-19 04:37:25,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103509 states. [2023-12-19 04:37:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103509 to 98401. [2023-12-19 04:37:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98401 states, 98400 states have (on average 1.04880081300813) internal successors, (103202), 98400 states have internal predecessors, (103202), 0 states have call successors, (0), 0 states 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 04:37:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98401 states to 98401 states and 103202 transitions. [2023-12-19 04:37:27,057 INFO L78 Accepts]: Start accepts. Automaton has 98401 states and 103202 transitions. Word has length 1364 [2023-12-19 04:37:27,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:37:27,058 INFO L495 AbstractCegarLoop]: Abstraction has 98401 states and 103202 transitions. [2023-12-19 04:37:27,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.16666666666666) internal successors, (955), 6 states have internal predecessors, (955), 0 states have call successors, (0), 0 states 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 04:37:27,058 INFO L276 IsEmpty]: Start isEmpty. Operand 98401 states and 103202 transitions. [2023-12-19 04:37:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1398 [2023-12-19 04:37:27,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:37:27,138 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:37:27,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-19 04:37:27,138 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:37:27,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:37:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash -820419092, now seen corresponding path program 1 times [2023-12-19 04:37:27,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:37:27,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727087382] [2023-12-19 04:37:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:37:27,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:37:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:37:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3377 backedges. 2255 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2023-12-19 04:37:28,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:37:28,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727087382] [2023-12-19 04:37:28,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727087382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:37:28,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:37:28,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:37:28,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132641036] [2023-12-19 04:37:28,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:37:28,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:37:28,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:37:28,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:37:28,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:37:28,175 INFO L87 Difference]: Start difference. First operand 98401 states and 103202 transitions. Second operand has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states 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 04:37:29,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:37:29,880 INFO L93 Difference]: Finished difference Result 204013 states and 213922 transitions. [2023-12-19 04:37:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:37:29,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 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 1397 [2023-12-19 04:37:29,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:37:30,020 INFO L225 Difference]: With dead ends: 204013 [2023-12-19 04:37:30,020 INFO L226 Difference]: Without dead ends: 106038 [2023-12-19 04:37:30,078 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 04:37:30,079 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 130 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:37:30,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 231 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 04:37:30,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106038 states. [2023-12-19 04:37:31,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106038 to 96241. [2023-12-19 04:37:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96241 states, 96240 states have (on average 1.040928927680798) internal successors, (100179), 96240 states have internal predecessors, (100179), 0 states have call successors, (0), 0 states 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 04:37:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96241 states to 96241 states and 100179 transitions. [2023-12-19 04:37:31,459 INFO L78 Accepts]: Start accepts. Automaton has 96241 states and 100179 transitions. Word has length 1397 [2023-12-19 04:37:31,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:37:31,460 INFO L495 AbstractCegarLoop]: Abstraction has 96241 states and 100179 transitions. [2023-12-19 04:37:31,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 276.6666666666667) internal successors, (830), 3 states have internal predecessors, (830), 0 states have call successors, (0), 0 states 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 04:37:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 96241 states and 100179 transitions. [2023-12-19 04:37:31,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1620 [2023-12-19 04:37:31,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:37:31,745 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:37:31,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-19 04:37:31,745 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:37:31,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:37:31,746 INFO L85 PathProgramCache]: Analyzing trace with hash 268056865, now seen corresponding path program 1 times [2023-12-19 04:37:31,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:37:31,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475508176] [2023-12-19 04:37:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:37:31,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:37:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:37:32,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4561 backedges. 2359 proven. 0 refuted. 0 times theorem prover too weak. 2202 trivial. 0 not checked. [2023-12-19 04:37:32,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:37:32,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475508176] [2023-12-19 04:37:32,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475508176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:37:32,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:37:32,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:37:32,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770774303] [2023-12-19 04:37:32,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:37:32,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:37:32,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:37:32,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:37:32,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:37:32,940 INFO L87 Difference]: Start difference. First operand 96241 states and 100179 transitions. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 04:37:34,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:37:34,425 INFO L93 Difference]: Finished difference Result 195464 states and 203465 transitions. [2023-12-19 04:37:34,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:37:34,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 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 1619 [2023-12-19 04:37:34,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:37:34,576 INFO L225 Difference]: With dead ends: 195464 [2023-12-19 04:37:34,576 INFO L226 Difference]: Without dead ends: 99649 [2023-12-19 04:37:34,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:37:34,620 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 300 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 04:37:34,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 192 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 04:37:34,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99649 states. [2023-12-19 04:37:35,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99649 to 99224. [2023-12-19 04:37:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99224 states, 99223 states have (on average 1.0403938602944882) internal successors, (103231), 99223 states have internal predecessors, (103231), 0 states have call successors, (0), 0 states 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 04:37:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99224 states to 99224 states and 103231 transitions. [2023-12-19 04:37:36,027 INFO L78 Accepts]: Start accepts. Automaton has 99224 states and 103231 transitions. Word has length 1619 [2023-12-19 04:37:36,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:37:36,028 INFO L495 AbstractCegarLoop]: Abstraction has 99224 states and 103231 transitions. [2023-12-19 04:37:36,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 04:37:36,028 INFO L276 IsEmpty]: Start isEmpty. Operand 99224 states and 103231 transitions. [2023-12-19 04:37:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1706 [2023-12-19 04:37:36,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:37:36,111 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:37:36,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-19 04:37:36,112 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:37:36,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:37:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1884802295, now seen corresponding path program 1 times [2023-12-19 04:37:36,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:37:36,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347284448] [2023-12-19 04:37:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:37:36,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:37:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:37:37,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4236 backedges. 2906 proven. 0 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2023-12-19 04:37:37,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:37:37,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347284448] [2023-12-19 04:37:37,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347284448] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:37:37,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:37:37,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:37:37,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172203565] [2023-12-19 04:37:37,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:37:37,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:37:37,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:37:37,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:37:37,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:37:37,442 INFO L87 Difference]: Start difference. First operand 99224 states and 103231 transitions. Second operand has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 04:37:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:37:39,229 INFO L93 Difference]: Finished difference Result 203981 states and 212168 transitions. [2023-12-19 04:37:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:37:39,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1705 [2023-12-19 04:37:39,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:37:39,378 INFO L225 Difference]: With dead ends: 203981 [2023-12-19 04:37:39,378 INFO L226 Difference]: Without dead ends: 105183 [2023-12-19 04:37:39,564 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 04:37:39,566 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 185 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:37:39,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 672 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:37:39,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105183 states. [2023-12-19 04:37:40,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105183 to 103039. [2023-12-19 04:37:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103039 states, 103038 states have (on average 1.0369475339195249) internal successors, (106845), 103038 states have internal predecessors, (106845), 0 states have call successors, (0), 0 states 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 04:37:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103039 states to 103039 states and 106845 transitions. [2023-12-19 04:37:41,016 INFO L78 Accepts]: Start accepts. Automaton has 103039 states and 106845 transitions. Word has length 1705 [2023-12-19 04:37:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:37:41,016 INFO L495 AbstractCegarLoop]: Abstraction has 103039 states and 106845 transitions. [2023-12-19 04:37:41,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 04:37:41,017 INFO L276 IsEmpty]: Start isEmpty. Operand 103039 states and 106845 transitions. [2023-12-19 04:37:41,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1723 [2023-12-19 04:37:41,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:37:41,094 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:37:41,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-19 04:37:41,094 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:37:41,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:37:41,095 INFO L85 PathProgramCache]: Analyzing trace with hash 58050077, now seen corresponding path program 1 times [2023-12-19 04:37:41,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:37:41,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467470601] [2023-12-19 04:37:41,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:37:41,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:37:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:37:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4696 backedges. 2198 proven. 0 refuted. 0 times theorem prover too weak. 2498 trivial. 0 not checked. [2023-12-19 04:37:42,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:37:42,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467470601] [2023-12-19 04:37:42,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467470601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:37:42,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:37:42,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:37:42,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137223004] [2023-12-19 04:37:42,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:37:42,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:37:42,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:37:42,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:37:42,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:37:42,399 INFO L87 Difference]: Start difference. First operand 103039 states and 106845 transitions. Second operand has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states 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 04:37:44,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:37:44,170 INFO L93 Difference]: Finished difference Result 212047 states and 219837 transitions. [2023-12-19 04:37:44,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:37:44,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 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 1722 [2023-12-19 04:37:44,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:37:44,311 INFO L225 Difference]: With dead ends: 212047 [2023-12-19 04:37:44,311 INFO L226 Difference]: Without dead ends: 109434 [2023-12-19 04:37:44,358 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 04:37:44,358 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 114 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:37:44,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 665 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 04:37:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109434 states. [2023-12-19 04:37:45,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109434 to 106869. [2023-12-19 04:37:45,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106869 states, 106868 states have (on average 1.0364936182954674) internal successors, (110768), 106868 states have internal predecessors, (110768), 0 states have call successors, (0), 0 states 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 04:37:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106869 states to 106869 states and 110768 transitions. [2023-12-19 04:37:45,760 INFO L78 Accepts]: Start accepts. Automaton has 106869 states and 110768 transitions. Word has length 1722 [2023-12-19 04:37:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:37:45,761 INFO L495 AbstractCegarLoop]: Abstraction has 106869 states and 110768 transitions. [2023-12-19 04:37:45,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states 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 04:37:45,761 INFO L276 IsEmpty]: Start isEmpty. Operand 106869 states and 110768 transitions. [2023-12-19 04:37:45,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1838 [2023-12-19 04:37:45,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:37:45,850 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:37:45,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 04:37:45,850 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:37:45,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:37:45,851 INFO L85 PathProgramCache]: Analyzing trace with hash -2117471111, now seen corresponding path program 1 times [2023-12-19 04:37:45,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:37:45,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913012682] [2023-12-19 04:37:45,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:37:45,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:37:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:37:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5641 backedges. 2430 proven. 0 refuted. 0 times theorem prover too weak. 3211 trivial. 0 not checked. [2023-12-19 04:37:47,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:37:47,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913012682] [2023-12-19 04:37:47,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913012682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:37:47,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:37:47,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:37:47,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984893118] [2023-12-19 04:37:47,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:37:47,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:37:47,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:37:47,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:37:47,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:37:47,268 INFO L87 Difference]: Start difference. First operand 106869 states and 110768 transitions. Second operand has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states 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 04:37:48,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:37:48,843 INFO L93 Difference]: Finished difference Result 210756 states and 218609 transitions. [2023-12-19 04:37:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:37:48,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 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 1837 [2023-12-19 04:37:48,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:37:48,845 INFO L225 Difference]: With dead ends: 210756 [2023-12-19 04:37:48,845 INFO L226 Difference]: Without dead ends: 0 [2023-12-19 04:37:48,906 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 04:37:48,907 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 119 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:37:48,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 568 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1094 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-19 04:37:48,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-19 04:37:48,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-19 04:37:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:37:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-19 04:37:48,908 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1837 [2023-12-19 04:37:48,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:37:48,908 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-19 04:37:48,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states 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 04:37:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-19 04:37:48,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-19 04:37:48,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 04:37:48,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-19 04:37:48,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.