/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:50:02,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:50:02,102 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:50:02,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:50:02,105 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:50:02,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:50:02,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:50:02,118 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:50:02,118 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:50:02,118 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:50:02,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:50:02,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:50:02,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:50:02,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:50:02,120 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:50:02,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:50:02,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:50:02,121 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:50:02,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:50:02,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:50:02,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:50:02,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:50:02,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:50:02,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:50:02,122 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:50:02,122 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:50:02,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:50:02,123 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:50:02,123 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:50:02,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:50:02,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:50:02,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:50:02,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:50:02,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:50:02,124 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:50:02,124 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:50:02,124 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:50:02,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:50:02,125 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:50:02,125 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:50:02,125 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:50:02,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:50:02,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:50:02,125 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:50:02,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:50:02,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:50:02,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:50:02,315 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:50:02,316 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:50:02,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c [2023-12-21 11:50:03,334 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:50:03,499 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:50:03,499 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c [2023-12-21 11:50:03,509 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6558307a/3155b83978ff4b10916180e96f24fcd7/FLAG6813aaee9 [2023-12-21 11:50:03,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6558307a/3155b83978ff4b10916180e96f24fcd7 [2023-12-21 11:50:03,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:50:03,524 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:50:03,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:50:03,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:50:03,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:50:03,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72618bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03, skipping insertion in model container [2023-12-21 11:50:03,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,569 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:50:03,689 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c[11261,11274] [2023-12-21 11:50:03,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:50:03,699 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:50:03,729 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c[11261,11274] [2023-12-21 11:50:03,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:50:03,740 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:50:03,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03 WrapperNode [2023-12-21 11:50:03,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:50:03,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:50:03,741 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:50:03,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:50:03,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,751 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,780 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 331 [2023-12-21 11:50:03,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:50:03,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:50:03,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:50:03,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:50:03,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,824 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]. [2023-12-21 11:50:03,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,829 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,840 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:50:03,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:50:03,841 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:50:03,841 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:50:03,841 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03" (1/1) ... [2023-12-21 11:50:03,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:50:03,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:50:03,869 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) [2023-12-21 11:50:03,871 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 [2023-12-21 11:50:03,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:50:03,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:50:03,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:50:03,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:50:03,962 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:50:03,972 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:50:04,222 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:50:04,259 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:50:04,259 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:50:04,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:50:04 BoogieIcfgContainer [2023-12-21 11:50:04,260 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:50:04,261 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:50:04,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:50:04,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:50:04,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:50:03" (1/3) ... [2023-12-21 11:50:04,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55dcd859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:50:04, skipping insertion in model container [2023-12-21 11:50:04,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:50:03" (2/3) ... [2023-12-21 11:50:04,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55dcd859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:50:04, skipping insertion in model container [2023-12-21 11:50:04,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:50:04" (3/3) ... [2023-12-21 11:50:04,265 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c [2023-12-21 11:50:04,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:50:04,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:50:04,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:50:04,313 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;@1cd2b44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:50:04,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:50:04,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 78 states have (on average 1.794871794871795) internal successors, (140), 79 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:04,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 11:50:04,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:04,322 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] [2023-12-21 11:50:04,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:04,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:04,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1979643945, now seen corresponding path program 1 times [2023-12-21 11:50:04,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:04,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276785425] [2023-12-21 11:50:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:04,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:04,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:04,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276785425] [2023-12-21 11:50:04,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276785425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:04,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:04,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:50:04,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312616239] [2023-12-21 11:50:04,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:04,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:50:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:04,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:50:04,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:50:04,603 INFO L87 Difference]: Start difference. First operand has 80 states, 78 states have (on average 1.794871794871795) internal successors, (140), 79 states have internal predecessors, (140), 0 states have call successors, (0), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:04,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:04,666 INFO L93 Difference]: Finished difference Result 124 states and 213 transitions. [2023-12-21 11:50:04,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:50:04,668 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-12-21 11:50:04,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:04,682 INFO L225 Difference]: With dead ends: 124 [2023-12-21 11:50:04,683 INFO L226 Difference]: Without dead ends: 78 [2023-12-21 11:50:04,685 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 [2023-12-21 11:50:04,688 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:04,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:04,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-21 11:50:04,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-21 11:50:04,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.7532467532467533) internal successors, (135), 77 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:04,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 135 transitions. [2023-12-21 11:50:04,757 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 135 transitions. Word has length 20 [2023-12-21 11:50:04,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:04,757 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 135 transitions. [2023-12-21 11:50:04,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:04,757 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 135 transitions. [2023-12-21 11:50:04,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-21 11:50:04,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:04,759 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] [2023-12-21 11:50:04,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:50:04,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:04,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:04,760 INFO L85 PathProgramCache]: Analyzing trace with hash 726975449, now seen corresponding path program 1 times [2023-12-21 11:50:04,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:04,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942089815] [2023-12-21 11:50:04,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:04,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:04,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:04,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942089815] [2023-12-21 11:50:04,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942089815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:04,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:04,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:50:04,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155675127] [2023-12-21 11:50:04,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:04,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:50:04,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:04,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:50:04,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:50:04,953 INFO L87 Difference]: Start difference. First operand 78 states and 135 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:05,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:05,006 INFO L93 Difference]: Finished difference Result 124 states and 207 transitions. [2023-12-21 11:50:05,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:50:05,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-12-21 11:50:05,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:05,007 INFO L225 Difference]: With dead ends: 124 [2023-12-21 11:50:05,007 INFO L226 Difference]: Without dead ends: 78 [2023-12-21 11:50:05,007 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 [2023-12-21 11:50:05,009 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:05,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 362 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:05,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-21 11:50:05,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-12-21 11:50:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3506493506493507) internal successors, (104), 77 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:05,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 104 transitions. [2023-12-21 11:50:05,014 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 104 transitions. Word has length 20 [2023-12-21 11:50:05,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:05,014 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 104 transitions. [2023-12-21 11:50:05,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:05,015 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 104 transitions. [2023-12-21 11:50:05,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 11:50:05,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:05,016 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, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:05,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:50:05,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:05,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:05,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1670705904, now seen corresponding path program 1 times [2023-12-21 11:50:05,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:05,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734712425] [2023-12-21 11:50:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:05,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:05,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:05,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734712425] [2023-12-21 11:50:05,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734712425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:05,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:05,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:50:05,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177983696] [2023-12-21 11:50:05,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:05,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:50:05,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:05,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:50:05,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:50:05,147 INFO L87 Difference]: Start difference. First operand 78 states and 104 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:05,346 INFO L93 Difference]: Finished difference Result 508 states and 794 transitions. [2023-12-21 11:50:05,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 11:50:05,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-21 11:50:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:05,351 INFO L225 Difference]: With dead ends: 508 [2023-12-21 11:50:05,351 INFO L226 Difference]: Without dead ends: 465 [2023-12-21 11:50:05,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-21 11:50:05,354 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 825 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:05,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1063 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:50:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-12-21 11:50:05,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 119. [2023-12-21 11:50:05,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4406779661016949) internal successors, (170), 118 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 170 transitions. [2023-12-21 11:50:05,364 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 170 transitions. Word has length 50 [2023-12-21 11:50:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:05,365 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 170 transitions. [2023-12-21 11:50:05,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 170 transitions. [2023-12-21 11:50:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 11:50:05,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:05,366 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:05,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:50:05,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:05,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:05,367 INFO L85 PathProgramCache]: Analyzing trace with hash 11837336, now seen corresponding path program 1 times [2023-12-21 11:50:05,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:05,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799814829] [2023-12-21 11:50:05,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:05,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:05,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:05,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799814829] [2023-12-21 11:50:05,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799814829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:05,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:05,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:50:05,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941411120] [2023-12-21 11:50:05,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:05,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:50:05,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:05,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:50:05,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:50:05,665 INFO L87 Difference]: Start difference. First operand 119 states and 170 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:05,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:05,791 INFO L93 Difference]: Finished difference Result 205 states and 306 transitions. [2023-12-21 11:50:05,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:50:05,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-21 11:50:05,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:05,792 INFO L225 Difference]: With dead ends: 205 [2023-12-21 11:50:05,792 INFO L226 Difference]: Without dead ends: 121 [2023-12-21 11:50:05,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-21 11:50:05,795 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 72 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:05,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 419 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:05,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-21 11:50:05,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2023-12-21 11:50:05,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4322033898305084) internal successors, (169), 118 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:05,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 169 transitions. [2023-12-21 11:50:05,807 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 169 transitions. Word has length 52 [2023-12-21 11:50:05,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:05,808 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 169 transitions. [2023-12-21 11:50:05,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:05,808 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 169 transitions. [2023-12-21 11:50:05,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 11:50:05,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:05,809 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:05,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:50:05,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:05,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:05,810 INFO L85 PathProgramCache]: Analyzing trace with hash 9692384, now seen corresponding path program 1 times [2023-12-21 11:50:05,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:05,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745776492] [2023-12-21 11:50:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:05,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:05,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:05,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:05,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745776492] [2023-12-21 11:50:05,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745776492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:05,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:05,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:50:05,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072620477] [2023-12-21 11:50:05,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:05,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:50:05,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:05,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:50:05,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:50:05,893 INFO L87 Difference]: Start difference. First operand 119 states and 169 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:05,916 INFO L93 Difference]: Finished difference Result 276 states and 418 transitions. [2023-12-21 11:50:05,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:50:05,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-21 11:50:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:05,917 INFO L225 Difference]: With dead ends: 276 [2023-12-21 11:50:05,917 INFO L226 Difference]: Without dead ends: 192 [2023-12-21 11:50:05,918 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 [2023-12-21 11:50:05,918 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 44 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:05,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 158 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:05,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-21 11:50:05,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 188. [2023-12-21 11:50:05,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.4759358288770053) internal successors, (276), 187 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:05,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 276 transitions. [2023-12-21 11:50:05,927 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 276 transitions. Word has length 52 [2023-12-21 11:50:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:05,927 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 276 transitions. [2023-12-21 11:50:05,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 276 transitions. [2023-12-21 11:50:05,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 11:50:05,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:05,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:05,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:50:05,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:05,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:05,929 INFO L85 PathProgramCache]: Analyzing trace with hash 352913681, now seen corresponding path program 1 times [2023-12-21 11:50:05,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:05,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143639394] [2023-12-21 11:50:05,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:05,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:06,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:06,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143639394] [2023-12-21 11:50:06,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143639394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:06,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:06,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:50:06,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549673534] [2023-12-21 11:50:06,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:06,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:50:06,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:06,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:50:06,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:50:06,088 INFO L87 Difference]: Start difference. First operand 188 states and 276 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:06,108 INFO L93 Difference]: Finished difference Result 196 states and 285 transitions. [2023-12-21 11:50:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 11:50:06,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-21 11:50:06,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:06,110 INFO L225 Difference]: With dead ends: 196 [2023-12-21 11:50:06,110 INFO L226 Difference]: Without dead ends: 194 [2023-12-21 11:50:06,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:50:06,113 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 2 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:06,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 485 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-21 11:50:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2023-12-21 11:50:06,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.4607329842931938) internal successors, (279), 191 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 279 transitions. [2023-12-21 11:50:06,131 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 279 transitions. Word has length 53 [2023-12-21 11:50:06,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:06,132 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 279 transitions. [2023-12-21 11:50:06,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,132 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 279 transitions. [2023-12-21 11:50:06,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 11:50:06,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:06,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:06,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:50:06,133 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:06,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:06,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1123356120, now seen corresponding path program 1 times [2023-12-21 11:50:06,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:06,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695722216] [2023-12-21 11:50:06,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:06,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:06,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:06,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695722216] [2023-12-21 11:50:06,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695722216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:06,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:06,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:50:06,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179526990] [2023-12-21 11:50:06,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:06,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:50:06,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:06,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:50:06,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:50:06,177 INFO L87 Difference]: Start difference. First operand 192 states and 279 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:06,191 INFO L93 Difference]: Finished difference Result 490 states and 739 transitions. [2023-12-21 11:50:06,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:50:06,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-21 11:50:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:06,192 INFO L225 Difference]: With dead ends: 490 [2023-12-21 11:50:06,192 INFO L226 Difference]: Without dead ends: 333 [2023-12-21 11:50:06,195 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 [2023-12-21 11:50:06,196 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 57 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:06,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 219 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:06,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-12-21 11:50:06,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2023-12-21 11:50:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.4848484848484849) internal successors, (490), 330 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 490 transitions. [2023-12-21 11:50:06,204 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 490 transitions. Word has length 54 [2023-12-21 11:50:06,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:06,205 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 490 transitions. [2023-12-21 11:50:06,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,205 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 490 transitions. [2023-12-21 11:50:06,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 11:50:06,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:06,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:06,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:50:06,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:06,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:06,210 INFO L85 PathProgramCache]: Analyzing trace with hash 537643992, now seen corresponding path program 1 times [2023-12-21 11:50:06,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:06,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337518110] [2023-12-21 11:50:06,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:06,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:06,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:06,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337518110] [2023-12-21 11:50:06,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337518110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:06,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:06,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:50:06,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108262643] [2023-12-21 11:50:06,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:06,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:50:06,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:50:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:50:06,260 INFO L87 Difference]: Start difference. First operand 331 states and 490 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:06,302 INFO L93 Difference]: Finished difference Result 891 states and 1344 transitions. [2023-12-21 11:50:06,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:50:06,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-21 11:50:06,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:06,306 INFO L225 Difference]: With dead ends: 891 [2023-12-21 11:50:06,306 INFO L226 Difference]: Without dead ends: 595 [2023-12-21 11:50:06,308 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 [2023-12-21 11:50:06,309 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 53 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:06,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 215 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:06,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-12-21 11:50:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 593. [2023-12-21 11:50:06,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 1.4864864864864864) internal successors, (880), 592 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 880 transitions. [2023-12-21 11:50:06,325 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 880 transitions. Word has length 54 [2023-12-21 11:50:06,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:06,326 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 880 transitions. [2023-12-21 11:50:06,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,327 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 880 transitions. [2023-12-21 11:50:06,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 11:50:06,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:06,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:06,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:50:06,328 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:06,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:06,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1426377432, now seen corresponding path program 1 times [2023-12-21 11:50:06,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:06,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085530015] [2023-12-21 11:50:06,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:06,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:06,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:06,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085530015] [2023-12-21 11:50:06,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085530015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:06,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:06,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:50:06,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659931539] [2023-12-21 11:50:06,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:06,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:50:06,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:06,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:50:06,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:50:06,386 INFO L87 Difference]: Start difference. First operand 593 states and 880 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:06,415 INFO L93 Difference]: Finished difference Result 1645 states and 2458 transitions. [2023-12-21 11:50:06,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:50:06,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-21 11:50:06,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:06,419 INFO L225 Difference]: With dead ends: 1645 [2023-12-21 11:50:06,420 INFO L226 Difference]: Without dead ends: 1087 [2023-12-21 11:50:06,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:50:06,423 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 51 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:06,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 217 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:06,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2023-12-21 11:50:06,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 1085. [2023-12-21 11:50:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 1084 states have (on average 1.4723247232472325) internal successors, (1596), 1084 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1596 transitions. [2023-12-21 11:50:06,443 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1596 transitions. Word has length 54 [2023-12-21 11:50:06,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:06,443 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1596 transitions. [2023-12-21 11:50:06,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1596 transitions. [2023-12-21 11:50:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 11:50:06,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:06,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:06,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:50:06,445 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:06,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:06,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1163300056, now seen corresponding path program 1 times [2023-12-21 11:50:06,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:06,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372947434] [2023-12-21 11:50:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:06,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:06,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:06,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:06,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372947434] [2023-12-21 11:50:06,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372947434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:06,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:06,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:50:06,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452559290] [2023-12-21 11:50:06,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:06,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:50:06,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:06,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:50:06,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:50:06,483 INFO L87 Difference]: Start difference. First operand 1085 states and 1596 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:06,519 INFO L93 Difference]: Finished difference Result 3057 states and 4494 transitions. [2023-12-21 11:50:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:50:06,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-21 11:50:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:06,524 INFO L225 Difference]: With dead ends: 3057 [2023-12-21 11:50:06,524 INFO L226 Difference]: Without dead ends: 2007 [2023-12-21 11:50:06,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:50:06,526 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 55 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:06,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 221 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:06,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2023-12-21 11:50:06,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 2005. [2023-12-21 11:50:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 2004 states have (on average 1.4471057884231537) internal successors, (2900), 2004 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 2900 transitions. [2023-12-21 11:50:06,565 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 2900 transitions. Word has length 54 [2023-12-21 11:50:06,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:06,565 INFO L495 AbstractCegarLoop]: Abstraction has 2005 states and 2900 transitions. [2023-12-21 11:50:06,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 2900 transitions. [2023-12-21 11:50:06,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 11:50:06,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:06,566 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:06,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:50:06,566 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:06,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:06,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1854820259, now seen corresponding path program 1 times [2023-12-21 11:50:06,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:06,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100766651] [2023-12-21 11:50:06,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:06,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:06,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:06,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100766651] [2023-12-21 11:50:06,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100766651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:06,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:06,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:50:06,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165532491] [2023-12-21 11:50:06,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:06,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:50:06,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:06,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:50:06,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:50:06,613 INFO L87 Difference]: Start difference. First operand 2005 states and 2900 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:06,656 INFO L93 Difference]: Finished difference Result 4060 states and 5946 transitions. [2023-12-21 11:50:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:50:06,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-12-21 11:50:06,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:06,663 INFO L225 Difference]: With dead ends: 4060 [2023-12-21 11:50:06,663 INFO L226 Difference]: Without dead ends: 2937 [2023-12-21 11:50:06,664 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 [2023-12-21 11:50:06,665 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 56 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:06,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 220 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:06,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2023-12-21 11:50:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2935. [2023-12-21 11:50:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2935 states, 2934 states have (on average 1.4417177914110428) internal successors, (4230), 2934 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2935 states to 2935 states and 4230 transitions. [2023-12-21 11:50:06,755 INFO L78 Accepts]: Start accepts. Automaton has 2935 states and 4230 transitions. Word has length 56 [2023-12-21 11:50:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:06,755 INFO L495 AbstractCegarLoop]: Abstraction has 2935 states and 4230 transitions. [2023-12-21 11:50:06,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:06,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2935 states and 4230 transitions. [2023-12-21 11:50:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 11:50:06,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:06,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:06,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:50:06,757 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:06,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:06,758 INFO L85 PathProgramCache]: Analyzing trace with hash -135946512, now seen corresponding path program 1 times [2023-12-21 11:50:06,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:06,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624970103] [2023-12-21 11:50:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:06,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:50:06,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:06,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624970103] [2023-12-21 11:50:06,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624970103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:06,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:06,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:50:06,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234812605] [2023-12-21 11:50:06,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:06,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:50:06,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:06,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:50:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:50:06,859 INFO L87 Difference]: Start difference. First operand 2935 states and 4230 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:07,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:07,207 INFO L93 Difference]: Finished difference Result 18035 states and 26044 transitions. [2023-12-21 11:50:07,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:50:07,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 72 [2023-12-21 11:50:07,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:07,241 INFO L225 Difference]: With dead ends: 18035 [2023-12-21 11:50:07,241 INFO L226 Difference]: Without dead ends: 15137 [2023-12-21 11:50:07,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:50:07,248 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 616 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:07,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 645 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:50:07,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2023-12-21 11:50:07,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 5831. [2023-12-21 11:50:07,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5831 states, 5830 states have (on average 1.4363636363636363) internal successors, (8374), 5830 states have internal predecessors, (8374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5831 states to 5831 states and 8374 transitions. [2023-12-21 11:50:07,444 INFO L78 Accepts]: Start accepts. Automaton has 5831 states and 8374 transitions. Word has length 72 [2023-12-21 11:50:07,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:07,445 INFO L495 AbstractCegarLoop]: Abstraction has 5831 states and 8374 transitions. [2023-12-21 11:50:07,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:07,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states and 8374 transitions. [2023-12-21 11:50:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 11:50:07,449 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:07,449 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:07,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:50:07,449 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:07,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash -721658640, now seen corresponding path program 1 times [2023-12-21 11:50:07,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:07,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884713583] [2023-12-21 11:50:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:07,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 11:50:07,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:07,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884713583] [2023-12-21 11:50:07,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884713583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:07,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:07,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:50:07,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677844138] [2023-12-21 11:50:07,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:07,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:50:07,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:07,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:50:07,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:50:07,564 INFO L87 Difference]: Start difference. First operand 5831 states and 8374 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:07,934 INFO L93 Difference]: Finished difference Result 20931 states and 30188 transitions. [2023-12-21 11:50:07,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:50:07,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 72 [2023-12-21 11:50:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:07,969 INFO L225 Difference]: With dead ends: 20931 [2023-12-21 11:50:07,969 INFO L226 Difference]: Without dead ends: 18033 [2023-12-21 11:50:07,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:50:07,974 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 662 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:07,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 626 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:50:07,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18033 states. [2023-12-21 11:50:08,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18033 to 10183. [2023-12-21 11:50:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10183 states, 10182 states have (on average 1.4289923394225104) internal successors, (14550), 10182 states have internal predecessors, (14550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:08,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10183 states to 10183 states and 14550 transitions. [2023-12-21 11:50:08,282 INFO L78 Accepts]: Start accepts. Automaton has 10183 states and 14550 transitions. Word has length 72 [2023-12-21 11:50:08,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:08,282 INFO L495 AbstractCegarLoop]: Abstraction has 10183 states and 14550 transitions. [2023-12-21 11:50:08,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:08,282 INFO L276 IsEmpty]: Start isEmpty. Operand 10183 states and 14550 transitions. [2023-12-21 11:50:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 11:50:08,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:08,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:08,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:50:08,284 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:08,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:08,284 INFO L85 PathProgramCache]: Analyzing trace with hash 167074800, now seen corresponding path program 1 times [2023-12-21 11:50:08,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:08,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859916570] [2023-12-21 11:50:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:08,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 11:50:08,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:08,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859916570] [2023-12-21 11:50:08,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859916570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:08,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:08,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:50:08,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12374068] [2023-12-21 11:50:08,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:08,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:50:08,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:08,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:50:08,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:50:08,370 INFO L87 Difference]: Start difference. First operand 10183 states and 14550 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:08,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:08,766 INFO L93 Difference]: Finished difference Result 23827 states and 34332 transitions. [2023-12-21 11:50:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:50:08,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 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 72 [2023-12-21 11:50:08,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:08,795 INFO L225 Difference]: With dead ends: 23827 [2023-12-21 11:50:08,795 INFO L226 Difference]: Without dead ends: 20929 [2023-12-21 11:50:08,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:50:08,802 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 617 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:08,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 659 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:50:08,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20929 states. [2023-12-21 11:50:09,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20929 to 13079. [2023-12-21 11:50:09,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13079 states, 13078 states have (on average 1.4294234592445327) internal successors, (18694), 13078 states have internal predecessors, (18694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13079 states to 13079 states and 18694 transitions. [2023-12-21 11:50:09,177 INFO L78 Accepts]: Start accepts. Automaton has 13079 states and 18694 transitions. Word has length 72 [2023-12-21 11:50:09,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:09,177 INFO L495 AbstractCegarLoop]: Abstraction has 13079 states and 18694 transitions. [2023-12-21 11:50:09,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:09,177 INFO L276 IsEmpty]: Start isEmpty. Operand 13079 states and 18694 transitions. [2023-12-21 11:50:09,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-21 11:50:09,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:09,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:09,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:50:09,179 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:09,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:09,180 INFO L85 PathProgramCache]: Analyzing trace with hash -96002576, now seen corresponding path program 1 times [2023-12-21 11:50:09,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:09,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372939476] [2023-12-21 11:50:09,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:09,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 11:50:09,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:09,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372939476] [2023-12-21 11:50:09,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372939476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:09,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:09,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:50:09,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594332132] [2023-12-21 11:50:09,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:09,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:50:09,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:09,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:50:09,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:50:09,273 INFO L87 Difference]: Start difference. First operand 13079 states and 18694 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:09,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:09,811 INFO L93 Difference]: Finished difference Result 26723 states and 38476 transitions. [2023-12-21 11:50:09,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:50:09,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 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 72 [2023-12-21 11:50:09,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:09,864 INFO L225 Difference]: With dead ends: 26723 [2023-12-21 11:50:09,864 INFO L226 Difference]: Without dead ends: 23825 [2023-12-21 11:50:09,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:50:09,870 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 565 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:09,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 739 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:50:09,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23825 states. [2023-12-21 11:50:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23825 to 15975. [2023-12-21 11:50:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15975 states, 15974 states have (on average 1.429698259671967) internal successors, (22838), 15974 states have internal predecessors, (22838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15975 states to 15975 states and 22838 transitions. [2023-12-21 11:50:10,287 INFO L78 Accepts]: Start accepts. Automaton has 15975 states and 22838 transitions. Word has length 72 [2023-12-21 11:50:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:10,287 INFO L495 AbstractCegarLoop]: Abstraction has 15975 states and 22838 transitions. [2023-12-21 11:50:10,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 15975 states and 22838 transitions. [2023-12-21 11:50:10,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 11:50:10,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:10,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:10,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:50:10,289 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:10,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:10,290 INFO L85 PathProgramCache]: Analyzing trace with hash -863872139, now seen corresponding path program 1 times [2023-12-21 11:50:10,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:10,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911387070] [2023-12-21 11:50:10,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:10,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:50:10,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:10,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911387070] [2023-12-21 11:50:10,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911387070] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:10,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:10,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:50:10,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189923354] [2023-12-21 11:50:10,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:10,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:50:10,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:10,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:50:10,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:50:10,381 INFO L87 Difference]: Start difference. First operand 15975 states and 22838 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:10,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:10,913 INFO L93 Difference]: Finished difference Result 27923 states and 40252 transitions. [2023-12-21 11:50:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:50:10,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 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 74 [2023-12-21 11:50:10,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:10,955 INFO L225 Difference]: With dead ends: 27923 [2023-12-21 11:50:10,955 INFO L226 Difference]: Without dead ends: 25873 [2023-12-21 11:50:10,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 11:50:10,965 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 608 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:10,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 758 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:50:10,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25873 states. [2023-12-21 11:50:11,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25873 to 18023. [2023-12-21 11:50:11,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18023 states, 18022 states have (on average 1.4323604483409167) internal successors, (25814), 18022 states have internal predecessors, (25814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18023 states to 18023 states and 25814 transitions. [2023-12-21 11:50:11,460 INFO L78 Accepts]: Start accepts. Automaton has 18023 states and 25814 transitions. Word has length 74 [2023-12-21 11:50:11,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:11,460 INFO L495 AbstractCegarLoop]: Abstraction has 18023 states and 25814 transitions. [2023-12-21 11:50:11,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 18023 states and 25814 transitions. [2023-12-21 11:50:11,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 11:50:11,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:11,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:11,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:50:11,463 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:11,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:11,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1741830520, now seen corresponding path program 1 times [2023-12-21 11:50:11,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:11,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338601748] [2023-12-21 11:50:11,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:11,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:11,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:11,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338601748] [2023-12-21 11:50:11,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338601748] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:11,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:11,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:50:11,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158900339] [2023-12-21 11:50:11,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:11,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:50:11,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:11,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:50:11,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:50:11,621 INFO L87 Difference]: Start difference. First operand 18023 states and 25814 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:11,820 INFO L93 Difference]: Finished difference Result 31358 states and 45180 transitions. [2023-12-21 11:50:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:50:11,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-21 11:50:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:11,839 INFO L225 Difference]: With dead ends: 31358 [2023-12-21 11:50:11,840 INFO L226 Difference]: Without dead ends: 13372 [2023-12-21 11:50:11,853 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 [2023-12-21 11:50:11,854 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 50 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:11,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 229 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13372 states. [2023-12-21 11:50:12,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13372 to 13370. [2023-12-21 11:50:12,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13370 states, 13369 states have (on average 1.4356346772383872) internal successors, (19193), 13369 states have internal predecessors, (19193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:12,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13370 states to 13370 states and 19193 transitions. [2023-12-21 11:50:12,198 INFO L78 Accepts]: Start accepts. Automaton has 13370 states and 19193 transitions. Word has length 74 [2023-12-21 11:50:12,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:12,199 INFO L495 AbstractCegarLoop]: Abstraction has 13370 states and 19193 transitions. [2023-12-21 11:50:12,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:12,199 INFO L276 IsEmpty]: Start isEmpty. Operand 13370 states and 19193 transitions. [2023-12-21 11:50:12,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 11:50:12,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:12,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:12,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:50:12,200 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:12,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:12,201 INFO L85 PathProgramCache]: Analyzing trace with hash 268782275, now seen corresponding path program 1 times [2023-12-21 11:50:12,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:12,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250673622] [2023-12-21 11:50:12,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:12,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:12,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:12,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250673622] [2023-12-21 11:50:12,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250673622] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:12,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:12,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:50:12,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165284106] [2023-12-21 11:50:12,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:12,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:50:12,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:50:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:50:12,252 INFO L87 Difference]: Start difference. First operand 13370 states and 19193 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:12,356 INFO L93 Difference]: Finished difference Result 20030 states and 28763 transitions. [2023-12-21 11:50:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:50:12,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-21 11:50:12,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:12,365 INFO L225 Difference]: With dead ends: 20030 [2023-12-21 11:50:12,365 INFO L226 Difference]: Without dead ends: 6716 [2023-12-21 11:50:12,374 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 [2023-12-21 11:50:12,374 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 45 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:12,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 214 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:12,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2023-12-21 11:50:12,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 6714. [2023-12-21 11:50:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6714 states, 6713 states have (on average 1.418292864591092) internal successors, (9521), 6713 states have internal predecessors, (9521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6714 states to 6714 states and 9521 transitions. [2023-12-21 11:50:12,488 INFO L78 Accepts]: Start accepts. Automaton has 6714 states and 9521 transitions. Word has length 75 [2023-12-21 11:50:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:12,488 INFO L495 AbstractCegarLoop]: Abstraction has 6714 states and 9521 transitions. [2023-12-21 11:50:12,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 6714 states and 9521 transitions. [2023-12-21 11:50:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 11:50:12,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:12,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:50:12,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:50:12,489 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:12,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:12,490 INFO L85 PathProgramCache]: Analyzing trace with hash 205836241, now seen corresponding path program 1 times [2023-12-21 11:50:12,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:12,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727346160] [2023-12-21 11:50:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:12,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:12,550 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:12,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:12,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727346160] [2023-12-21 11:50:12,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727346160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:12,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:12,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:50:12,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190379762] [2023-12-21 11:50:12,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:12,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:50:12,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:12,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:50:12,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:50:12,552 INFO L87 Difference]: Start difference. First operand 6714 states and 9521 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:12,684 INFO L93 Difference]: Finished difference Result 10046 states and 14255 transitions. [2023-12-21 11:50:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:50:12,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-21 11:50:12,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:12,688 INFO L225 Difference]: With dead ends: 10046 [2023-12-21 11:50:12,688 INFO L226 Difference]: Without dead ends: 3388 [2023-12-21 11:50:12,692 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 [2023-12-21 11:50:12,692 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 42 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:12,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 199 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2023-12-21 11:50:12,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 3386. [2023-12-21 11:50:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 1.3994091580502215) internal successors, (4737), 3385 states have internal predecessors, (4737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4737 transitions. [2023-12-21 11:50:12,765 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4737 transitions. Word has length 77 [2023-12-21 11:50:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:12,765 INFO L495 AbstractCegarLoop]: Abstraction has 3386 states and 4737 transitions. [2023-12-21 11:50:12,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:12,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4737 transitions. [2023-12-21 11:50:12,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 11:50:12,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:12,766 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:50:12,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 11:50:12,766 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:12,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:12,766 INFO L85 PathProgramCache]: Analyzing trace with hash 608497247, now seen corresponding path program 1 times [2023-12-21 11:50:12,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:12,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578798937] [2023-12-21 11:50:12,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:12,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:12,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:12,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578798937] [2023-12-21 11:50:12,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578798937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:12,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:12,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:50:12,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275502114] [2023-12-21 11:50:12,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:12,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:50:12,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:12,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:50:12,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:50:12,843 INFO L87 Difference]: Start difference. First operand 3386 states and 4737 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:12,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:12,881 INFO L93 Difference]: Finished difference Result 5054 states and 7079 transitions. [2023-12-21 11:50:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:50:12,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-21 11:50:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:12,884 INFO L225 Difference]: With dead ends: 5054 [2023-12-21 11:50:12,884 INFO L226 Difference]: Without dead ends: 1724 [2023-12-21 11:50:12,886 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 [2023-12-21 11:50:12,887 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 39 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:12,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 184 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:12,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2023-12-21 11:50:12,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1722. [2023-12-21 11:50:12,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1721 states have (on average 1.3776873910517142) internal successors, (2371), 1721 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2371 transitions. [2023-12-21 11:50:12,926 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2371 transitions. Word has length 79 [2023-12-21 11:50:12,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:12,926 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2371 transitions. [2023-12-21 11:50:12,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:12,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2371 transitions. [2023-12-21 11:50:12,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-21 11:50:12,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:12,927 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:50:12,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 11:50:12,927 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:12,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:12,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1265272429, now seen corresponding path program 1 times [2023-12-21 11:50:12,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:12,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661466115] [2023-12-21 11:50:12,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:12,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:12,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:12,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661466115] [2023-12-21 11:50:12,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661466115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:50:12,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:50:12,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:50:12,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564083227] [2023-12-21 11:50:12,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:50:12,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:50:12,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:12,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:50:12,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:50:12,985 INFO L87 Difference]: Start difference. First operand 1722 states and 2371 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:13,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:13,008 INFO L93 Difference]: Finished difference Result 2558 states and 3530 transitions. [2023-12-21 11:50:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:50:13,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-12-21 11:50:13,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:13,010 INFO L225 Difference]: With dead ends: 2558 [2023-12-21 11:50:13,010 INFO L226 Difference]: Without dead ends: 892 [2023-12-21 11:50:13,011 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 [2023-12-21 11:50:13,012 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 36 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:13,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 169 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:50:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2023-12-21 11:50:13,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 890. [2023-12-21 11:50:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 1.3509561304836895) internal successors, (1201), 889 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:13,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1201 transitions. [2023-12-21 11:50:13,032 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1201 transitions. Word has length 81 [2023-12-21 11:50:13,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:13,032 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1201 transitions. [2023-12-21 11:50:13,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:13,033 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1201 transitions. [2023-12-21 11:50:13,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 11:50:13,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:13,033 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:50:13,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 11:50:13,033 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:13,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:13,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1213040645, now seen corresponding path program 1 times [2023-12-21 11:50:13,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:13,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638860678] [2023-12-21 11:50:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:13,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:13,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:13,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638860678] [2023-12-21 11:50:13,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638860678] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:50:13,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22360119] [2023-12-21 11:50:13,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:13,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:50:13,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:50:13,314 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) [2023-12-21 11:50:13,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 11:50:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:13,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:50:13,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:50:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:13,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:50:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:13,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22360119] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:50:13,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:50:13,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 17 [2023-12-21 11:50:13,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612917051] [2023-12-21 11:50:13,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:50:13,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 11:50:13,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:13,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 11:50:13,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:50:13,896 INFO L87 Difference]: Start difference. First operand 890 states and 1201 transitions. Second operand has 17 states, 17 states have (on average 14.117647058823529) internal successors, (240), 17 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:15,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:15,927 INFO L93 Difference]: Finished difference Result 7660 states and 10238 transitions. [2023-12-21 11:50:15,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 11:50:15,928 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.117647058823529) internal successors, (240), 17 states have internal predecessors, (240), 0 states have call successors, (0), 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 83 [2023-12-21 11:50:15,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:15,935 INFO L225 Difference]: With dead ends: 7660 [2023-12-21 11:50:15,936 INFO L226 Difference]: Without dead ends: 6740 [2023-12-21 11:50:15,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=723, Invalid=3309, Unknown=0, NotChecked=0, Total=4032 [2023-12-21 11:50:15,938 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 1633 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:15,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 889 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:50:15,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6740 states. [2023-12-21 11:50:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6740 to 6102. [2023-12-21 11:50:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6102 states, 6101 states have (on average 1.3188001966890674) internal successors, (8046), 6101 states have internal predecessors, (8046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 8046 transitions. [2023-12-21 11:50:16,077 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 8046 transitions. Word has length 83 [2023-12-21 11:50:16,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:16,077 INFO L495 AbstractCegarLoop]: Abstraction has 6102 states and 8046 transitions. [2023-12-21 11:50:16,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.117647058823529) internal successors, (240), 17 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:16,077 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 8046 transitions. [2023-12-21 11:50:16,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 11:50:16,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:16,078 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:50:16,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 11:50:16,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-21 11:50:16,283 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:16,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:16,283 INFO L85 PathProgramCache]: Analyzing trace with hash 813716947, now seen corresponding path program 1 times [2023-12-21 11:50:16,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:16,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905977425] [2023-12-21 11:50:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:16,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:17,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:17,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905977425] [2023-12-21 11:50:17,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905977425] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:50:17,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025141191] [2023-12-21 11:50:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:17,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:50:17,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:50:17,900 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) [2023-12-21 11:50:17,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 11:50:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:17,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:50:17,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:50:18,458 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:18,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:50:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:19,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025141191] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:50:19,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:50:19,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-12-21 11:50:19,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754862634] [2023-12-21 11:50:19,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:50:19,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 11:50:19,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:19,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 11:50:19,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2023-12-21 11:50:19,238 INFO L87 Difference]: Start difference. First operand 6102 states and 8046 transitions. Second operand has 32 states, 32 states have (on average 7.0625) internal successors, (226), 31 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:22,385 INFO L93 Difference]: Finished difference Result 34300 states and 45067 transitions. [2023-12-21 11:50:22,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-21 11:50:22,385 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.0625) internal successors, (226), 31 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-12-21 11:50:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:22,421 INFO L225 Difference]: With dead ends: 34300 [2023-12-21 11:50:22,422 INFO L226 Difference]: Without dead ends: 28296 [2023-12-21 11:50:22,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1084, Invalid=4768, Unknown=0, NotChecked=0, Total=5852 [2023-12-21 11:50:22,434 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 2355 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2355 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:22,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2355 Valid, 902 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:50:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28296 states. [2023-12-21 11:50:23,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28296 to 26384. [2023-12-21 11:50:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26384 states, 26383 states have (on average 1.3042868513815715) internal successors, (34411), 26383 states have internal predecessors, (34411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:23,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26384 states to 26384 states and 34411 transitions. [2023-12-21 11:50:23,191 INFO L78 Accepts]: Start accepts. Automaton has 26384 states and 34411 transitions. Word has length 84 [2023-12-21 11:50:23,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:23,191 INFO L495 AbstractCegarLoop]: Abstraction has 26384 states and 34411 transitions. [2023-12-21 11:50:23,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.0625) internal successors, (226), 31 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 26384 states and 34411 transitions. [2023-12-21 11:50:23,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 11:50:23,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:23,192 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:50:23,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 11:50:23,398 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,SelfDestructingSolverStorable22 [2023-12-21 11:50:23,398 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:23,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:23,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2002990893, now seen corresponding path program 1 times [2023-12-21 11:50:23,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:23,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178122676] [2023-12-21 11:50:23,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:23,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:23,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:23,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178122676] [2023-12-21 11:50:23,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178122676] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:50:23,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047012126] [2023-12-21 11:50:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:23,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:50:23,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:50:23,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:50:23,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 11:50:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:23,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 11:50:23,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:50:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:24,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:50:24,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:24,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047012126] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:50:24,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:50:24,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-21 11:50:24,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273046351] [2023-12-21 11:50:24,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:50:24,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 11:50:24,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:24,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 11:50:24,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2023-12-21 11:50:24,718 INFO L87 Difference]: Start difference. First operand 26384 states and 34411 transitions. Second operand has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 22 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:27,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:27,433 INFO L93 Difference]: Finished difference Result 84662 states and 110015 transitions. [2023-12-21 11:50:27,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 11:50:27,434 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 22 states have internal predecessors, (240), 0 states have call successors, (0), 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 84 [2023-12-21 11:50:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:27,491 INFO L225 Difference]: With dead ends: 84662 [2023-12-21 11:50:27,491 INFO L226 Difference]: Without dead ends: 58734 [2023-12-21 11:50:27,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=542, Invalid=2428, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 11:50:27,500 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 1405 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:27,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1405 Valid, 1092 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 11:50:27,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58734 states. [2023-12-21 11:50:29,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58734 to 51966. [2023-12-21 11:50:29,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51966 states, 51965 states have (on average 1.2741653035697105) internal successors, (66212), 51965 states have internal predecessors, (66212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51966 states to 51966 states and 66212 transitions. [2023-12-21 11:50:29,330 INFO L78 Accepts]: Start accepts. Automaton has 51966 states and 66212 transitions. Word has length 84 [2023-12-21 11:50:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:29,330 INFO L495 AbstractCegarLoop]: Abstraction has 51966 states and 66212 transitions. [2023-12-21 11:50:29,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.434782608695652) internal successors, (240), 22 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:29,330 INFO L276 IsEmpty]: Start isEmpty. Operand 51966 states and 66212 transitions. [2023-12-21 11:50:29,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 11:50:29,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:29,332 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:50:29,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 11:50:29,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:50:29,539 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:29,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:29,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1994673203, now seen corresponding path program 1 times [2023-12-21 11:50:29,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:29,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60444549] [2023-12-21 11:50:29,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:29,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:29,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60444549] [2023-12-21 11:50:29,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60444549] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:50:29,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250872910] [2023-12-21 11:50:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:29,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:50:29,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:50:29,847 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:50:29,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 11:50:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:29,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:50:29,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:50:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:30,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:50:30,690 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:30,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250872910] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:50:30,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:50:30,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-21 11:50:30,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124141157] [2023-12-21 11:50:30,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:50:30,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 11:50:30,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 11:50:30,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-12-21 11:50:30,692 INFO L87 Difference]: Start difference. First operand 51966 states and 66212 transitions. Second operand has 19 states, 19 states have (on average 10.0) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:33,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:33,673 INFO L93 Difference]: Finished difference Result 161020 states and 205110 transitions. [2023-12-21 11:50:33,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 11:50:33,673 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.0) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 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 86 [2023-12-21 11:50:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:33,792 INFO L225 Difference]: With dead ends: 161020 [2023-12-21 11:50:33,792 INFO L226 Difference]: Without dead ends: 111052 [2023-12-21 11:50:33,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2023-12-21 11:50:33,813 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 729 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:33,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 694 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:50:33,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111052 states. [2023-12-21 11:50:37,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111052 to 106328. [2023-12-21 11:50:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106328 states, 106327 states have (on average 1.2609309018405486) internal successors, (134071), 106327 states have internal predecessors, (134071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:37,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106328 states to 106328 states and 134071 transitions. [2023-12-21 11:50:37,432 INFO L78 Accepts]: Start accepts. Automaton has 106328 states and 134071 transitions. Word has length 86 [2023-12-21 11:50:37,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:37,432 INFO L495 AbstractCegarLoop]: Abstraction has 106328 states and 134071 transitions. [2023-12-21 11:50:37,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.0) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand 106328 states and 134071 transitions. [2023-12-21 11:50:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 11:50:37,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:37,435 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:50:37,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 11:50:37,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:50:37,639 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:37,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1214968845, now seen corresponding path program 1 times [2023-12-21 11:50:37,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:37,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417490378] [2023-12-21 11:50:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:37,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:38,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:38,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417490378] [2023-12-21 11:50:38,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417490378] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:50:38,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705742007] [2023-12-21 11:50:38,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:38,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:50:38,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:50:38,321 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:50:38,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 11:50:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:38,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 11:50:38,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:50:39,506 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:39,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:50:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:40,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705742007] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:50:40,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:50:40,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2023-12-21 11:50:40,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457911300] [2023-12-21 11:50:40,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:50:40,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 11:50:40,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:40,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 11:50:40,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-12-21 11:50:40,733 INFO L87 Difference]: Start difference. First operand 106328 states and 134071 transitions. Second operand has 25 states, 25 states have (on average 8.44) internal successors, (211), 24 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:45,251 INFO L93 Difference]: Finished difference Result 147742 states and 184650 transitions. [2023-12-21 11:50:45,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 11:50:45,251 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.44) internal successors, (211), 24 states have internal predecessors, (211), 0 states have call successors, (0), 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 87 [2023-12-21 11:50:45,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:45,400 INFO L225 Difference]: With dead ends: 147742 [2023-12-21 11:50:45,400 INFO L226 Difference]: Without dead ends: 116636 [2023-12-21 11:50:45,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 11:50:45,432 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 778 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:45,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 923 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:50:45,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116636 states. [2023-12-21 11:50:48,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116636 to 99528. [2023-12-21 11:50:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99528 states, 99527 states have (on average 1.2581811970621037) internal successors, (125223), 99527 states have internal predecessors, (125223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99528 states to 99528 states and 125223 transitions. [2023-12-21 11:50:49,055 INFO L78 Accepts]: Start accepts. Automaton has 99528 states and 125223 transitions. Word has length 87 [2023-12-21 11:50:49,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:49,055 INFO L495 AbstractCegarLoop]: Abstraction has 99528 states and 125223 transitions. [2023-12-21 11:50:49,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.44) internal successors, (211), 24 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:49,056 INFO L276 IsEmpty]: Start isEmpty. Operand 99528 states and 125223 transitions. [2023-12-21 11:50:49,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 11:50:49,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:49,058 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:50:49,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-21 11:50:49,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-21 11:50:49,263 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:49,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:49,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1569674417, now seen corresponding path program 1 times [2023-12-21 11:50:49,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:49,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438751711] [2023-12-21 11:50:49,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:49,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:49,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:50:49,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438751711] [2023-12-21 11:50:49,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438751711] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:50:49,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009723903] [2023-12-21 11:50:49,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:49,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:50:49,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:50:49,970 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:50:49,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 11:50:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:50:50,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 11:50:50,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:50:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:50,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:50:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:50:51,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009723903] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:50:51,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:50:51,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2023-12-21 11:50:51,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251981650] [2023-12-21 11:50:51,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:50:51,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 11:50:51,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:50:51,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 11:50:51,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-21 11:50:51,140 INFO L87 Difference]: Start difference. First operand 99528 states and 125223 transitions. Second operand has 27 states, 27 states have (on average 7.111111111111111) internal successors, (192), 26 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) [2023-12-21 11:50:55,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:50:55,392 INFO L93 Difference]: Finished difference Result 138472 states and 172083 transitions. [2023-12-21 11:50:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 11:50:55,392 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.111111111111111) internal successors, (192), 26 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 87 [2023-12-21 11:50:55,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:50:55,496 INFO L225 Difference]: With dead ends: 138472 [2023-12-21 11:50:55,496 INFO L226 Difference]: Without dead ends: 106028 [2023-12-21 11:50:55,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=414, Invalid=1308, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 11:50:55,509 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 1028 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:50:55,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 922 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:50:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106028 states. [2023-12-21 11:50:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106028 to 90894. [2023-12-21 11:50:58,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90894 states, 90893 states have (on average 1.2529677752962274) internal successors, (113886), 90893 states have internal predecessors, (113886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:50:58,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90894 states to 90894 states and 113886 transitions. [2023-12-21 11:50:58,987 INFO L78 Accepts]: Start accepts. Automaton has 90894 states and 113886 transitions. Word has length 87 [2023-12-21 11:50:58,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:50:58,987 INFO L495 AbstractCegarLoop]: Abstraction has 90894 states and 113886 transitions. [2023-12-21 11:50:58,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.111111111111111) internal successors, (192), 26 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) [2023-12-21 11:50:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 90894 states and 113886 transitions. [2023-12-21 11:50:58,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 11:50:58,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:50:58,990 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:50:59,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 11:50:59,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-21 11:50:59,196 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:50:59,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:50:59,196 INFO L85 PathProgramCache]: Analyzing trace with hash 405482289, now seen corresponding path program 1 times [2023-12-21 11:50:59,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:50:59,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375222796] [2023-12-21 11:50:59,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:50:59,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:50:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:51:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:51:01,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:51:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375222796] [2023-12-21 11:51:01,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375222796] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:51:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979254143] [2023-12-21 11:51:01,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:51:01,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:51:01,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:51:01,603 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:51:01,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 11:51:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:51:01,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 11:51:01,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:51:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:51:02,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:51:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:51:04,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979254143] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:51:04,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:51:04,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 14, 15] total 57 [2023-12-21 11:51:04,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500154836] [2023-12-21 11:51:04,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:51:04,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-21 11:51:04,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:51:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-21 11:51:04,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3064, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 11:51:04,231 INFO L87 Difference]: Start difference. First operand 90894 states and 113886 transitions. Second operand has 58 states, 58 states have (on average 4.206896551724138) internal successors, (244), 57 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:52:38,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:52:38,844 INFO L93 Difference]: Finished difference Result 361969 states and 456308 transitions. [2023-12-21 11:52:38,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2023-12-21 11:52:38,844 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.206896551724138) internal successors, (244), 57 states have internal predecessors, (244), 0 states have call successors, (0), 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 87 [2023-12-21 11:52:38,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:52:39,501 INFO L225 Difference]: With dead ends: 361969 [2023-12-21 11:52:39,502 INFO L226 Difference]: Without dead ends: 329268 [2023-12-21 11:52:39,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 591 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168661 ImplicationChecksByTransitivity, 78.6s TimeCoverageRelationStatistics Valid=50420, Invalid=300636, Unknown=0, NotChecked=0, Total=351056 [2023-12-21 11:52:39,608 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 11363 mSDsluCounter, 5100 mSDsCounter, 0 mSdLazyCounter, 9681 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11363 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 10171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 9681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:52:39,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11363 Valid, 5259 Invalid, 10171 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [490 Valid, 9681 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-21 11:52:39,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329268 states. [2023-12-21 11:52:45,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329268 to 83838. [2023-12-21 11:52:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83838 states, 83837 states have (on average 1.2513687274115248) internal successors, (104911), 83837 states have internal predecessors, (104911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:52:45,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83838 states to 83838 states and 104911 transitions. [2023-12-21 11:52:45,362 INFO L78 Accepts]: Start accepts. Automaton has 83838 states and 104911 transitions. Word has length 87 [2023-12-21 11:52:45,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:52:45,362 INFO L495 AbstractCegarLoop]: Abstraction has 83838 states and 104911 transitions. [2023-12-21 11:52:45,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.206896551724138) internal successors, (244), 57 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:52:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 83838 states and 104911 transitions. [2023-12-21 11:52:45,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 11:52:45,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:52:45,363 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:52:45,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 11:52:45,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:52:45,570 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:52:45,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:52:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash -168653637, now seen corresponding path program 1 times [2023-12-21 11:52:45,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:52:45,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155881482] [2023-12-21 11:52:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:52:45,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:52:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:52:45,951 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:52:45,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:52:45,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155881482] [2023-12-21 11:52:45,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155881482] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:52:45,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187570605] [2023-12-21 11:52:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:52:45,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:52:45,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:52:45,960 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:52:46,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 11:52:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:52:46,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 11:52:46,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:52:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:52:46,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:52:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:52:47,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187570605] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:52:47,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:52:47,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2023-12-21 11:52:47,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25433557] [2023-12-21 11:52:47,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:52:47,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 11:52:47,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:52:47,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 11:52:47,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2023-12-21 11:52:47,380 INFO L87 Difference]: Start difference. First operand 83838 states and 104911 transitions. Second operand has 30 states, 30 states have (on average 7.133333333333334) internal successors, (214), 29 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:52:53,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:52:53,004 INFO L93 Difference]: Finished difference Result 129938 states and 162155 transitions. [2023-12-21 11:52:53,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 11:52:53,004 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.133333333333334) internal successors, (214), 29 states have internal predecessors, (214), 0 states have call successors, (0), 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 88 [2023-12-21 11:52:53,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:52:53,107 INFO L225 Difference]: With dead ends: 129938 [2023-12-21 11:52:53,107 INFO L226 Difference]: Without dead ends: 96532 [2023-12-21 11:52:53,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=545, Invalid=1807, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 11:52:53,133 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 1222 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:52:53,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 868 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:52:53,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96532 states. [2023-12-21 11:52:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96532 to 74516. [2023-12-21 11:52:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74516 states, 74515 states have (on average 1.2500570354962088) internal successors, (93148), 74515 states have internal predecessors, (93148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:52:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74516 states to 74516 states and 93148 transitions. [2023-12-21 11:52:57,422 INFO L78 Accepts]: Start accepts. Automaton has 74516 states and 93148 transitions. Word has length 88 [2023-12-21 11:52:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:52:57,422 INFO L495 AbstractCegarLoop]: Abstraction has 74516 states and 93148 transitions. [2023-12-21 11:52:57,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.133333333333334) internal successors, (214), 29 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:52:57,422 INFO L276 IsEmpty]: Start isEmpty. Operand 74516 states and 93148 transitions. [2023-12-21 11:52:57,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 11:52:57,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:52:57,423 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 11:52:57,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 11:52:57,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-21 11:52:57,628 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:52:57,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:52:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1565574893, now seen corresponding path program 1 times [2023-12-21 11:52:57,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:52:57,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989002638] [2023-12-21 11:52:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:52:57,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:52:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:52:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:52:58,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:52:58,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989002638] [2023-12-21 11:52:58,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989002638] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:52:58,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345918408] [2023-12-21 11:52:58,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:52:58,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:52:58,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:52:58,162 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:52:58,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 11:52:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:52:58,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 11:52:58,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:53:00,116 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:00,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:53:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:01,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345918408] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:53:01,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:53:01,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 17] total 41 [2023-12-21 11:53:01,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671583164] [2023-12-21 11:53:01,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:53:01,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 11:53:01,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:53:01,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 11:53:01,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1516, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 11:53:01,869 INFO L87 Difference]: Start difference. First operand 74516 states and 93148 transitions. Second operand has 42 states, 42 states have (on average 5.619047619047619) internal successors, (236), 41 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:09,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:53:09,567 INFO L93 Difference]: Finished difference Result 118714 states and 147679 transitions. [2023-12-21 11:53:09,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 11:53:09,568 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.619047619047619) internal successors, (236), 41 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-21 11:53:09,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:53:09,651 INFO L225 Difference]: With dead ends: 118714 [2023-12-21 11:53:09,651 INFO L226 Difference]: Without dead ends: 86741 [2023-12-21 11:53:09,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2347 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1987, Invalid=7325, Unknown=0, NotChecked=0, Total=9312 [2023-12-21 11:53:09,675 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 1826 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1826 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:53:09,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1826 Valid, 1585 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:53:09,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86741 states. [2023-12-21 11:53:13,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86741 to 64208. [2023-12-21 11:53:13,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64208 states, 64207 states have (on average 1.250237513043749) internal successors, (80274), 64207 states have internal predecessors, (80274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64208 states to 64208 states and 80274 transitions. [2023-12-21 11:53:13,586 INFO L78 Accepts]: Start accepts. Automaton has 64208 states and 80274 transitions. Word has length 89 [2023-12-21 11:53:13,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:53:13,586 INFO L495 AbstractCegarLoop]: Abstraction has 64208 states and 80274 transitions. [2023-12-21 11:53:13,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.619047619047619) internal successors, (236), 41 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:13,586 INFO L276 IsEmpty]: Start isEmpty. Operand 64208 states and 80274 transitions. [2023-12-21 11:53:13,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 11:53:13,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:53:13,592 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:53:13,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 11:53:13,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:13,797 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:53:13,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:53:13,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1046902042, now seen corresponding path program 1 times [2023-12-21 11:53:13,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:53:13,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095056216] [2023-12-21 11:53:13,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:13,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:53:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 52 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:14,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:53:14,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095056216] [2023-12-21 11:53:14,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095056216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:53:14,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261714011] [2023-12-21 11:53:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:14,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:14,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:53:14,315 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:53:14,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 11:53:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:14,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 11:53:14,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:53:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 25 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:15,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:53:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 19 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:16,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261714011] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:53:16,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:53:16,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2023-12-21 11:53:16,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802473227] [2023-12-21 11:53:16,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:53:16,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-21 11:53:16,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:53:16,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-21 11:53:16,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 11:53:16,776 INFO L87 Difference]: Start difference. First operand 64208 states and 80274 transitions. Second operand has 34 states, 34 states have (on average 11.617647058823529) internal successors, (395), 33 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:24,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:53:24,021 INFO L93 Difference]: Finished difference Result 114885 states and 143392 transitions. [2023-12-21 11:53:24,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 11:53:24,022 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 11.617647058823529) internal successors, (395), 33 states have internal predecessors, (395), 0 states have call successors, (0), 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 137 [2023-12-21 11:53:24,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:53:24,087 INFO L225 Difference]: With dead ends: 114885 [2023-12-21 11:53:24,087 INFO L226 Difference]: Without dead ends: 66786 [2023-12-21 11:53:24,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1300, Invalid=5020, Unknown=0, NotChecked=0, Total=6320 [2023-12-21 11:53:24,105 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 1659 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:53:24,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1659 Valid, 1198 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:53:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66786 states. [2023-12-21 11:53:28,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66786 to 64208. [2023-12-21 11:53:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64208 states, 64207 states have (on average 1.2357998349089663) internal successors, (79347), 64207 states have internal predecessors, (79347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64208 states to 64208 states and 79347 transitions. [2023-12-21 11:53:28,434 INFO L78 Accepts]: Start accepts. Automaton has 64208 states and 79347 transitions. Word has length 137 [2023-12-21 11:53:28,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:53:28,434 INFO L495 AbstractCegarLoop]: Abstraction has 64208 states and 79347 transitions. [2023-12-21 11:53:28,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 11.617647058823529) internal successors, (395), 33 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 64208 states and 79347 transitions. [2023-12-21 11:53:28,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-21 11:53:28,439 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:53:28,439 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:53:28,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 11:53:28,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-21 11:53:28,644 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:53:28,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:53:28,644 INFO L85 PathProgramCache]: Analyzing trace with hash 566627432, now seen corresponding path program 1 times [2023-12-21 11:53:28,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:53:28,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540849158] [2023-12-21 11:53:28,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:28,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:53:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 38 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:29,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:53:29,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540849158] [2023-12-21 11:53:29,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540849158] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:53:29,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290032468] [2023-12-21 11:53:29,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:29,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:29,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:53:29,201 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:53:29,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 11:53:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:29,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 11:53:29,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:53:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 40 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:30,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:53:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 38 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:31,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290032468] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:53:31,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:53:31,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 29 [2023-12-21 11:53:31,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60391518] [2023-12-21 11:53:31,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:53:31,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 11:53:31,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:53:31,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 11:53:31,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2023-12-21 11:53:31,796 INFO L87 Difference]: Start difference. First operand 64208 states and 79347 transitions. Second operand has 30 states, 30 states have (on average 11.166666666666666) internal successors, (335), 29 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:36,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:53:36,621 INFO L93 Difference]: Finished difference Result 105961 states and 131659 transitions. [2023-12-21 11:53:36,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 11:53:36,622 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 11.166666666666666) internal successors, (335), 29 states have internal predecessors, (335), 0 states have call successors, (0), 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 137 [2023-12-21 11:53:36,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:53:36,829 INFO L225 Difference]: With dead ends: 105961 [2023-12-21 11:53:36,830 INFO L226 Difference]: Without dead ends: 73212 [2023-12-21 11:53:36,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 11:53:36,854 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 903 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:53:36,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 844 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:53:36,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73212 states. [2023-12-21 11:53:41,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73212 to 64208. [2023-12-21 11:53:41,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64208 states, 64207 states have (on average 1.2287912532901397) internal successors, (78897), 64207 states have internal predecessors, (78897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64208 states to 64208 states and 78897 transitions. [2023-12-21 11:53:41,621 INFO L78 Accepts]: Start accepts. Automaton has 64208 states and 78897 transitions. Word has length 137 [2023-12-21 11:53:41,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:53:41,621 INFO L495 AbstractCegarLoop]: Abstraction has 64208 states and 78897 transitions. [2023-12-21 11:53:41,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 11.166666666666666) internal successors, (335), 29 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:41,621 INFO L276 IsEmpty]: Start isEmpty. Operand 64208 states and 78897 transitions. [2023-12-21 11:53:41,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 11:53:41,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:53:41,626 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:53:41,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 11:53:41,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-21 11:53:41,832 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:53:41,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:53:41,832 INFO L85 PathProgramCache]: Analyzing trace with hash 95893960, now seen corresponding path program 1 times [2023-12-21 11:53:41,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:53:41,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938928833] [2023-12-21 11:53:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:41,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:53:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 30 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:42,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:53:42,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938928833] [2023-12-21 11:53:42,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938928833] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:53:42,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908953363] [2023-12-21 11:53:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:42,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:42,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:53:42,326 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:53:42,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 11:53:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:42,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 11:53:42,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:53:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 26 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:43,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:53:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:44,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908953363] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:53:44,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:53:44,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2023-12-21 11:53:44,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212869528] [2023-12-21 11:53:44,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:53:44,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 11:53:44,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:53:44,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 11:53:44,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 11:53:44,754 INFO L87 Difference]: Start difference. First operand 64208 states and 78897 transitions. Second operand has 33 states, 33 states have (on average 11.818181818181818) internal successors, (390), 32 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:53:52,135 INFO L93 Difference]: Finished difference Result 114887 states and 141456 transitions. [2023-12-21 11:53:52,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-21 11:53:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 11.818181818181818) internal successors, (390), 32 states have internal predecessors, (390), 0 states have call successors, (0), 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 138 [2023-12-21 11:53:52,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:53:52,208 INFO L225 Difference]: With dead ends: 114887 [2023-12-21 11:53:52,208 INFO L226 Difference]: Without dead ends: 67808 [2023-12-21 11:53:52,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1578 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1496, Invalid=5986, Unknown=0, NotChecked=0, Total=7482 [2023-12-21 11:53:52,227 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1677 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:53:52,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 1327 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:53:52,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67808 states. [2023-12-21 11:53:57,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67808 to 64208. [2023-12-21 11:53:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64208 states, 64207 states have (on average 1.2142134035229804) internal successors, (77961), 64207 states have internal predecessors, (77961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:57,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64208 states to 64208 states and 77961 transitions. [2023-12-21 11:53:57,132 INFO L78 Accepts]: Start accepts. Automaton has 64208 states and 77961 transitions. Word has length 138 [2023-12-21 11:53:57,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:53:57,132 INFO L495 AbstractCegarLoop]: Abstraction has 64208 states and 77961 transitions. [2023-12-21 11:53:57,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.818181818181818) internal successors, (390), 32 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:53:57,132 INFO L276 IsEmpty]: Start isEmpty. Operand 64208 states and 77961 transitions. [2023-12-21 11:53:57,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 11:53:57,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:53:57,137 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:53:57,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 11:53:57,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-21 11:53:57,342 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:53:57,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:53:57,342 INFO L85 PathProgramCache]: Analyzing trace with hash 532026200, now seen corresponding path program 1 times [2023-12-21 11:53:57,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:53:57,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612940552] [2023-12-21 11:53:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:57,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:53:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:53:57,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:53:57,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612940552] [2023-12-21 11:53:57,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612940552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:53:57,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438887106] [2023-12-21 11:53:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:53:57,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:53:57,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:53:58,009 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:53:58,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 11:53:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:53:58,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-21 11:53:58,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:54:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:54:09,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:54:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:54:20,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438887106] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:54:20,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:54:20,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 40, 35] total 92 [2023-12-21 11:54:20,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615872587] [2023-12-21 11:54:20,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:54:20,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2023-12-21 11:54:20,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:54:20,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2023-12-21 11:54:20,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1085, Invalid=7287, Unknown=0, NotChecked=0, Total=8372 [2023-12-21 11:54:20,968 INFO L87 Difference]: Start difference. First operand 64208 states and 77961 transitions. Second operand has 92 states, 92 states have (on average 4.206521739130435) internal successors, (387), 92 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-21 12:04:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 953 states. [2023-12-21 12:04:06,706 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 12:04:06,706 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 12:04:06,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 1040 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512270 ImplicationChecksByTransitivity, 560.3s TimeCoverageRelationStatistics Valid=111298, Invalid=973424, Unknown=0, NotChecked=0, Total=1084722 [2023-12-21 12:04:06,752 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 12559 mSDsluCounter, 13057 mSDsCounter, 0 mSdLazyCounter, 19327 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12559 SdHoareTripleChecker+Valid, 13408 SdHoareTripleChecker+Invalid, 19933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 19327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2023-12-21 12:04:06,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12559 Valid, 13408 Invalid, 19933 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [606 Valid, 19327 Invalid, 0 Unknown, 0 Unchecked, 22.3s Time] [2023-12-21 12:04:06,753 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 12:04:06,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-21 12:04:06,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-21 12:04:06,961 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (64208states) and FLOYD_HOARE automaton (currently 953 states, 92 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-22-8-4-4-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∧-22-8-4-4-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-31-8-4-4-2-2-1 context. [2023-12-21 12:04:06,965 INFO L445 BasicCegarLoop]: Path program 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] [2023-12-21 12:04:06,967 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 12:04:06,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 12:04:06 BoogieIcfgContainer [2023-12-21 12:04:06,968 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 12:04:06,969 INFO L158 Benchmark]: Toolchain (without parser) took 843444.71ms. Allocated memory was 228.6MB in the beginning and 5.5GB in the end (delta: 5.3GB). Free memory was 164.1MB in the beginning and 4.0GB in the end (delta: -3.9GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-21 12:04:06,971 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 228.6MB. Free memory is still 177.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 12:04:06,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.59ms. Allocated memory is still 228.6MB. Free memory was 163.7MB in the beginning and 148.3MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 12:04:06,972 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.64ms. Allocated memory is still 228.6MB. Free memory was 148.3MB in the beginning and 145.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 12:04:06,972 INFO L158 Benchmark]: Boogie Preprocessor took 59.52ms. Allocated memory is still 228.6MB. Free memory was 145.7MB in the beginning and 142.7MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-21 12:04:06,972 INFO L158 Benchmark]: RCFGBuilder took 419.11ms. Allocated memory is still 228.6MB. Free memory was 142.7MB in the beginning and 114.8MB in the end (delta: 27.9MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-12-21 12:04:06,972 INFO L158 Benchmark]: TraceAbstraction took 842706.99ms. Allocated memory was 228.6MB in the beginning and 5.5GB in the end (delta: 5.3GB). Free memory was 114.4MB in the beginning and 4.0GB in the end (delta: -3.9GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. [2023-12-21 12:04:06,973 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 228.6MB. Free memory is still 177.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 215.59ms. Allocated memory is still 228.6MB. Free memory was 163.7MB in the beginning and 148.3MB in the end (delta: 15.4MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.64ms. Allocated memory is still 228.6MB. Free memory was 148.3MB in the beginning and 145.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 59.52ms. Allocated memory is still 228.6MB. Free memory was 145.7MB in the beginning and 142.7MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 419.11ms. Allocated memory is still 228.6MB. Free memory was 142.7MB in the beginning and 114.8MB in the end (delta: 27.9MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 842706.99ms. Allocated memory was 228.6MB in the beginning and 5.5GB in the end (delta: 5.3GB). Free memory was 114.4MB in the beginning and 4.0GB in the end (delta: -3.9GB). Peak memory consumption was 1.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 427]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 427). Cancelled while NwaCegarLoop was constructing difference of abstraction (64208states) and FLOYD_HOARE automaton (currently 953 states, 92 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-22-8-4-4-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying a ∧-22-8-4-4-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-31-8-4-4-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 842.7s, OverallIterations: 34, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 738.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43632 SdHoareTripleChecker+Valid, 34.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43632 mSDsluCounter, 38044 SdHoareTripleChecker+Invalid, 31.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33795 mSDsCounter, 1478 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40796 IncrementalHoareTripleChecker+Invalid, 42274 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1478 mSolverCounterUnsat, 4249 mSDtfsCounter, 40796 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4757 GetRequests, 2399 SyntacticMatches, 2 SemanticMatches, 2355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690874 ImplicationChecksByTransitivity, 658.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106328occurred in iteration=25, InterpolantAutomatonStates: 1021, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 44.0s AutomataMinimizationTime, 33 MinimizatonAttempts, 392525 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 54.8s InterpolantComputationTime, 3921 NumberOfCodeBlocks, 3921 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 5188 ConstructedInterpolants, 0 QuantifiedInterpolants, 103489 SizeOfPredicates, 103 NumberOfNonLiveVariables, 5301 ConjunctsInSsa, 317 ConjunctsInUnsatCore, 60 InterpolantComputations, 21 PerfectInterpolantSequences, 757/1887 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown