/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/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 14:13:25,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 14:13:25,126 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 14:13:25,130 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 14:13:25,131 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 14:13:25,147 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 14:13:25,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 14:13:25,148 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 14:13:25,149 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 14:13:25,152 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 14:13:25,152 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 14:13:25,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 14:13:25,153 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 14:13:25,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 14:13:25,154 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 14:13:25,154 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 14:13:25,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 14:13:25,155 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 14:13:25,155 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 14:13:25,155 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 14:13:25,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 14:13:25,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 14:13:25,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 14:13:25,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 14:13:25,156 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 14:13:25,156 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 14:13:25,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 14:13:25,157 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 14:13:25,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 14:13:25,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 14:13:25,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 14:13:25,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 14:13:25,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:13:25,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 14:13:25,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 14:13:25,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 14:13:25,159 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 14:13:25,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 14:13:25,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 14:13:25,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 14:13:25,160 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 14:13:25,160 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 14:13:25,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 14:13:25,161 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 14:13:25,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 14:13:25,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 14:13:25,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 14:13:25,372 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 14:13:25,372 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 14:13:25,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c [2023-12-20 14:13:26,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 14:13:26,771 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 14:13:26,772 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c [2023-12-20 14:13:26,799 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20ed14822/2ed17fa444804f02bda983371c89f229/FLAGe1293233a [2023-12-20 14:13:26,811 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20ed14822/2ed17fa444804f02bda983371c89f229 [2023-12-20 14:13:26,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 14:13:26,814 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 14:13:26,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 14:13:26,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 14:13:26,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 14:13:26,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:13:26" (1/1) ... [2023-12-20 14:13:26,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b050785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:26, skipping insertion in model container [2023-12-20 14:13:26,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:13:26" (1/1) ... [2023-12-20 14:13:26,920 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 14:13:27,241 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c[15482,15495] [2023-12-20 14:13:27,298 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c[23230,23243] [2023-12-20 14:13:27,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:13:27,758 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 14:13:27,783 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c[15482,15495] [2023-12-20 14:13:27,789 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c[23230,23243] [2023-12-20 14:13:28,037 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 14:13:28,058 INFO L206 MainTranslator]: Completed translation [2023-12-20 14:13:28,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28 WrapperNode [2023-12-20 14:13:28,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 14:13:28,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 14:13:28,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 14:13:28,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 14:13:28,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28" (1/1) ... [2023-12-20 14:13:28,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28" (1/1) ... [2023-12-20 14:13:28,307 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5153 [2023-12-20 14:13:28,307 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 14:13:28,308 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 14:13:28,308 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 14:13:28,308 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 14:13:28,316 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28" (1/1) ... [2023-12-20 14:13:28,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28" (1/1) ... [2023-12-20 14:13:28,347 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28" (1/1) ... [2023-12-20 14:13:28,541 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 14:13:28,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28" (1/1) ... [2023-12-20 14:13:28,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28" (1/1) ... [2023-12-20 14:13:28,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28" (1/1) ... [2023-12-20 14:13:28,677 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28" (1/1) ... [2023-12-20 14:13:28,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28" (1/1) ... [2023-12-20 14:13:28,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28" (1/1) ... [2023-12-20 14:13:28,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 14:13:28,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 14:13:28,763 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 14:13:28,763 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 14:13:28,764 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28" (1/1) ... [2023-12-20 14:13:28,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 14:13:28,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:13:28,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 14:13:28,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 14:13:28,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 14:13:28,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 14:13:28,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 14:13:28,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 14:13:28,994 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 14:13:28,995 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 14:13:32,134 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 14:13:32,168 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 14:13:32,168 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 14:13:32,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:13:32 BoogieIcfgContainer [2023-12-20 14:13:32,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 14:13:32,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 14:13:32,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 14:13:32,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 14:13:32,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:13:26" (1/3) ... [2023-12-20 14:13:32,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3738e846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:13:32, skipping insertion in model container [2023-12-20 14:13:32,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:13:28" (2/3) ... [2023-12-20 14:13:32,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3738e846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:13:32, skipping insertion in model container [2023-12-20 14:13:32,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:13:32" (3/3) ... [2023-12-20 14:13:32,174 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label09.c [2023-12-20 14:13:32,185 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 14:13:32,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 14:13:32,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 14:13:32,228 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;@5a70f651, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 14:13:32,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 14:13:32,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:32,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 14:13:32,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:32,243 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] [2023-12-20 14:13:32,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:32,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:32,249 INFO L85 PathProgramCache]: Analyzing trace with hash -713532304, now seen corresponding path program 1 times [2023-12-20 14:13:32,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:32,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015659041] [2023-12-20 14:13:32,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:32,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:32,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:32,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015659041] [2023-12-20 14:13:32,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015659041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:32,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:32,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 14:13:32,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813605795] [2023-12-20 14:13:32,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:32,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 14:13:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:32,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 14:13:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 14:13:32,461 INFO L87 Difference]: Start difference. First operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:32,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:32,529 INFO L93 Difference]: Finished difference Result 1654 states and 3254 transitions. [2023-12-20 14:13:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 14:13:32,537 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-20 14:13:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:32,548 INFO L225 Difference]: With dead ends: 1654 [2023-12-20 14:13:32,549 INFO L226 Difference]: Without dead ends: 845 [2023-12-20 14:13:32,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 14:13:32,561 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:32,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1599 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:13:32,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-20 14:13:32,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-20 14:13:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.896797153024911) internal successors, (1599), 844 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1599 transitions. [2023-12-20 14:13:32,632 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1599 transitions. Word has length 23 [2023-12-20 14:13:32,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:32,632 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1599 transitions. [2023-12-20 14:13:32,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:32,633 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1599 transitions. [2023-12-20 14:13:32,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 14:13:32,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:32,634 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] [2023-12-20 14:13:32,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 14:13:32,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:32,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:32,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1892491250, now seen corresponding path program 1 times [2023-12-20 14:13:32,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:32,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601005968] [2023-12-20 14:13:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:32,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:32,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:32,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601005968] [2023-12-20 14:13:32,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601005968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:32,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:32,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:13:32,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422729802] [2023-12-20 14:13:32,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:32,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:13:32,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:32,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:13:32,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:13:32,920 INFO L87 Difference]: Start difference. First operand 845 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:33,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:33,015 INFO L93 Difference]: Finished difference Result 895 states and 1678 transitions. [2023-12-20 14:13:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:13:33,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-20 14:13:33,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:33,020 INFO L225 Difference]: With dead ends: 895 [2023-12-20 14:13:33,021 INFO L226 Difference]: Without dead ends: 845 [2023-12-20 14:13:33,021 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 [2023-12-20 14:13:33,022 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:33,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4744 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:13:33,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-12-20 14:13:33,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2023-12-20 14:13:33,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.849347568208778) internal successors, (1559), 844 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1559 transitions. [2023-12-20 14:13:33,045 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1559 transitions. Word has length 23 [2023-12-20 14:13:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:33,046 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1559 transitions. [2023-12-20 14:13:33,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1559 transitions. [2023-12-20 14:13:33,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-20 14:13:33,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:33,052 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, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:33,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 14:13:33,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:33,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:33,052 INFO L85 PathProgramCache]: Analyzing trace with hash -808348940, now seen corresponding path program 1 times [2023-12-20 14:13:33,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:33,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313991969] [2023-12-20 14:13:33,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:33,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:33,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:33,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313991969] [2023-12-20 14:13:33,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313991969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:33,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:33,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:13:33,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627129089] [2023-12-20 14:13:33,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:33,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:13:33,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:33,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:13:33,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:13:33,250 INFO L87 Difference]: Start difference. First operand 845 states and 1559 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:33,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:33,516 INFO L93 Difference]: Finished difference Result 1409 states and 2471 transitions. [2023-12-20 14:13:33,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 14:13:33,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-20 14:13:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:33,522 INFO L225 Difference]: With dead ends: 1409 [2023-12-20 14:13:33,522 INFO L226 Difference]: Without dead ends: 1362 [2023-12-20 14:13:33,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-20 14:13:33,526 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 9675 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:33,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9675 Valid, 3624 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:13:33,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2023-12-20 14:13:33,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 890. [2023-12-20 14:13:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 888 states have (on average 1.837837837837838) internal successors, (1632), 889 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:33,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1632 transitions. [2023-12-20 14:13:33,548 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1632 transitions. Word has length 62 [2023-12-20 14:13:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:33,552 INFO L495 AbstractCegarLoop]: Abstraction has 890 states and 1632 transitions. [2023-12-20 14:13:33,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1632 transitions. [2023-12-20 14:13:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 14:13:33,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:33,554 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:33,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 14:13:33,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:33,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash 431995268, now seen corresponding path program 1 times [2023-12-20 14:13:33,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:33,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14433956] [2023-12-20 14:13:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:33,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:33,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:33,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14433956] [2023-12-20 14:13:33,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14433956] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:33,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:33,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:13:33,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565514791] [2023-12-20 14:13:33,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:33,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:13:33,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:33,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:13:33,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:33,633 INFO L87 Difference]: Start difference. First operand 890 states and 1632 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:33,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:33,663 INFO L93 Difference]: Finished difference Result 1063 states and 1911 transitions. [2023-12-20 14:13:33,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:13:33,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-20 14:13:33,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:33,667 INFO L225 Difference]: With dead ends: 1063 [2023-12-20 14:13:33,667 INFO L226 Difference]: Without dead ends: 971 [2023-12-20 14:13:33,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:33,674 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1488 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:33,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:13:33,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-12-20 14:13:33,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 969. [2023-12-20 14:13:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 967 states have (on average 1.8179937952430196) internal successors, (1758), 968 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1758 transitions. [2023-12-20 14:13:33,693 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1758 transitions. Word has length 64 [2023-12-20 14:13:33,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:33,694 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1758 transitions. [2023-12-20 14:13:33,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:33,695 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1758 transitions. [2023-12-20 14:13:33,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-20 14:13:33,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:33,696 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:33,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 14:13:33,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:33,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 434140220, now seen corresponding path program 1 times [2023-12-20 14:13:33,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:33,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319221992] [2023-12-20 14:13:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:33,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:33,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319221992] [2023-12-20 14:13:33,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319221992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:33,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:33,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:13:33,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795310887] [2023-12-20 14:13:33,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:33,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:13:33,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:33,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:13:33,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:13:33,975 INFO L87 Difference]: Start difference. First operand 969 states and 1758 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:34,217 INFO L93 Difference]: Finished difference Result 1142 states and 2034 transitions. [2023-12-20 14:13:34,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:13:34,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-20 14:13:34,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:34,221 INFO L225 Difference]: With dead ends: 1142 [2023-12-20 14:13:34,221 INFO L226 Difference]: Without dead ends: 971 [2023-12-20 14:13:34,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-20 14:13:34,222 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 6000 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6000 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:34,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6000 Valid, 1906 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:13:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-12-20 14:13:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 969. [2023-12-20 14:13:34,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 967 states have (on average 1.8159255429162358) internal successors, (1756), 968 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1756 transitions. [2023-12-20 14:13:34,235 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1756 transitions. Word has length 64 [2023-12-20 14:13:34,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:34,236 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1756 transitions. [2023-12-20 14:13:34,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,236 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1756 transitions. [2023-12-20 14:13:34,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 14:13:34,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:34,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:34,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 14:13:34,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:34,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash 444744363, now seen corresponding path program 1 times [2023-12-20 14:13:34,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:34,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192639198] [2023-12-20 14:13:34,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:34,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:34,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:34,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192639198] [2023-12-20 14:13:34,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192639198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:34,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:34,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 14:13:34,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213037856] [2023-12-20 14:13:34,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:34,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:13:34,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:34,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:13:34,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:13:34,342 INFO L87 Difference]: Start difference. First operand 969 states and 1756 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2023-12-20 14:13:34,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:34,369 INFO L93 Difference]: Finished difference Result 977 states and 1765 transitions. [2023-12-20 14:13:34,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:13:34,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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 65 [2023-12-20 14:13:34,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:34,373 INFO L225 Difference]: With dead ends: 977 [2023-12-20 14:13:34,373 INFO L226 Difference]: Without dead ends: 975 [2023-12-20 14:13:34,373 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 [2023-12-20 14:13:34,374 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4657 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:34,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4657 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:13:34,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-12-20 14:13:34,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 973. [2023-12-20 14:13:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 971 states have (on average 1.811534500514933) internal successors, (1759), 972 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1759 transitions. [2023-12-20 14:13:34,388 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1759 transitions. Word has length 65 [2023-12-20 14:13:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:34,388 INFO L495 AbstractCegarLoop]: Abstraction has 973 states and 1759 transitions. [2023-12-20 14:13:34,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2023-12-20 14:13:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1759 transitions. [2023-12-20 14:13:34,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:13:34,389 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:34,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:34,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 14:13:34,389 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:34,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:34,390 INFO L85 PathProgramCache]: Analyzing trace with hash 239452988, now seen corresponding path program 1 times [2023-12-20 14:13:34,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:34,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360392616] [2023-12-20 14:13:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:34,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:34,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:34,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360392616] [2023-12-20 14:13:34,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360392616] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:34,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:34,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:13:34,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268921143] [2023-12-20 14:13:34,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:34,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:13:34,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:34,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:13:34,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:34,423 INFO L87 Difference]: Start difference. First operand 973 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:34,443 INFO L93 Difference]: Finished difference Result 1159 states and 2052 transitions. [2023-12-20 14:13:34,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:13:34,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-20 14:13:34,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:34,446 INFO L225 Difference]: With dead ends: 1159 [2023-12-20 14:13:34,447 INFO L226 Difference]: Without dead ends: 1063 [2023-12-20 14:13:34,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:34,447 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1504 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:34,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:13:34,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2023-12-20 14:13:34,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2023-12-20 14:13:34,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1059 states have (on average 1.7903682719546743) internal successors, (1896), 1060 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1896 transitions. [2023-12-20 14:13:34,462 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1896 transitions. Word has length 66 [2023-12-20 14:13:34,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:34,462 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1896 transitions. [2023-12-20 14:13:34,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1896 transitions. [2023-12-20 14:13:34,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:13:34,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:34,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:34,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 14:13:34,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:34,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash -170933700, now seen corresponding path program 1 times [2023-12-20 14:13:34,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:34,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67946490] [2023-12-20 14:13:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:34,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:34,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:34,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67946490] [2023-12-20 14:13:34,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67946490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:34,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:34,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:13:34,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090834509] [2023-12-20 14:13:34,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:34,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:13:34,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:34,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:13:34,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:34,503 INFO L87 Difference]: Start difference. First operand 1061 states and 1896 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:34,529 INFO L93 Difference]: Finished difference Result 1559 states and 2676 transitions. [2023-12-20 14:13:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:13:34,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-20 14:13:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:34,533 INFO L225 Difference]: With dead ends: 1559 [2023-12-20 14:13:34,533 INFO L226 Difference]: Without dead ends: 1298 [2023-12-20 14:13:34,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:34,534 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 1502 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:34,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:13:34,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2023-12-20 14:13:34,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1296. [2023-12-20 14:13:34,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1294 states have (on average 1.7449768160741885) internal successors, (2258), 1295 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 2258 transitions. [2023-12-20 14:13:34,556 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 2258 transitions. Word has length 66 [2023-12-20 14:13:34,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:34,556 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 2258 transitions. [2023-12-20 14:13:34,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 2258 transitions. [2023-12-20 14:13:34,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:13:34,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:34,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:34,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 14:13:34,557 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:34,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:34,557 INFO L85 PathProgramCache]: Analyzing trace with hash -399572932, now seen corresponding path program 1 times [2023-12-20 14:13:34,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:34,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192692747] [2023-12-20 14:13:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:34,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:34,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:34,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192692747] [2023-12-20 14:13:34,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192692747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:34,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:34,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:13:34,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314622790] [2023-12-20 14:13:34,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:34,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:13:34,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:34,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:13:34,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:34,597 INFO L87 Difference]: Start difference. First operand 1296 states and 2258 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:34,626 INFO L93 Difference]: Finished difference Result 2240 states and 3720 transitions. [2023-12-20 14:13:34,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:13:34,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-20 14:13:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:34,633 INFO L225 Difference]: With dead ends: 2240 [2023-12-20 14:13:34,633 INFO L226 Difference]: Without dead ends: 1744 [2023-12-20 14:13:34,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:34,635 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1498 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:34,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1694 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:13:34,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2023-12-20 14:13:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1742. [2023-12-20 14:13:34,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1742 states, 1740 states have (on average 1.686206896551724) internal successors, (2934), 1741 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1742 states to 1742 states and 2934 transitions. [2023-12-20 14:13:34,670 INFO L78 Accepts]: Start accepts. Automaton has 1742 states and 2934 transitions. Word has length 66 [2023-12-20 14:13:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:34,670 INFO L495 AbstractCegarLoop]: Abstraction has 1742 states and 2934 transitions. [2023-12-20 14:13:34,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1742 states and 2934 transitions. [2023-12-20 14:13:34,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:13:34,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:34,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:34,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 14:13:34,674 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:34,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:34,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1025228996, now seen corresponding path program 1 times [2023-12-20 14:13:34,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:34,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216884547] [2023-12-20 14:13:34,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:34,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:34,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:34,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216884547] [2023-12-20 14:13:34,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216884547] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:34,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:34,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:13:34,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557142260] [2023-12-20 14:13:34,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:34,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:13:34,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:34,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:13:34,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:34,718 INFO L87 Difference]: Start difference. First operand 1742 states and 2934 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:34,753 INFO L93 Difference]: Finished difference Result 3530 states and 5664 transitions. [2023-12-20 14:13:34,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:13:34,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-20 14:13:34,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:34,760 INFO L225 Difference]: With dead ends: 3530 [2023-12-20 14:13:34,760 INFO L226 Difference]: Without dead ends: 2588 [2023-12-20 14:13:34,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:34,762 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1496 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:34,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:13:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2023-12-20 14:13:34,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2586. [2023-12-20 14:13:34,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2584 states have (on average 1.6215170278637772) internal successors, (4190), 2585 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 4190 transitions. [2023-12-20 14:13:34,803 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 4190 transitions. Word has length 66 [2023-12-20 14:13:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:34,803 INFO L495 AbstractCegarLoop]: Abstraction has 2586 states and 4190 transitions. [2023-12-20 14:13:34,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,804 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 4190 transitions. [2023-12-20 14:13:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:13:34,804 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:34,804 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:34,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 14:13:34,804 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:34,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:34,805 INFO L85 PathProgramCache]: Analyzing trace with hash -136495556, now seen corresponding path program 1 times [2023-12-20 14:13:34,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:34,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754722213] [2023-12-20 14:13:34,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:34,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:34,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:34,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754722213] [2023-12-20 14:13:34,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754722213] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:34,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:34,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:13:34,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966345653] [2023-12-20 14:13:34,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:34,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:13:34,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:34,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:13:34,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:34,837 INFO L87 Difference]: Start difference. First operand 2586 states and 4190 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:34,889 INFO L93 Difference]: Finished difference Result 5966 states and 9264 transitions. [2023-12-20 14:13:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:13:34,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-20 14:13:34,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:34,900 INFO L225 Difference]: With dead ends: 5966 [2023-12-20 14:13:34,900 INFO L226 Difference]: Without dead ends: 4180 [2023-12-20 14:13:34,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:34,903 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1494 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:34,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:13:34,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2023-12-20 14:13:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 4178. [2023-12-20 14:13:34,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4176 states have (on average 1.5589080459770115) internal successors, (6510), 4177 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 6510 transitions. [2023-12-20 14:13:34,974 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 6510 transitions. Word has length 66 [2023-12-20 14:13:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:34,974 INFO L495 AbstractCegarLoop]: Abstraction has 4178 states and 6510 transitions. [2023-12-20 14:13:34,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 6510 transitions. [2023-12-20 14:13:34,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:13:34,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:34,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:34,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 14:13:34,975 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:34,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:34,975 INFO L85 PathProgramCache]: Analyzing trace with hash -439516868, now seen corresponding path program 1 times [2023-12-20 14:13:34,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:34,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874563590] [2023-12-20 14:13:34,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:34,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:35,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:35,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874563590] [2023-12-20 14:13:35,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874563590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:35,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:35,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:13:35,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486605039] [2023-12-20 14:13:35,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:35,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:13:35,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:35,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:13:35,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:35,009 INFO L87 Difference]: Start difference. First operand 4178 states and 6510 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:35,089 INFO L93 Difference]: Finished difference Result 10550 states and 15888 transitions. [2023-12-20 14:13:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:13:35,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-20 14:13:35,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:35,108 INFO L225 Difference]: With dead ends: 10550 [2023-12-20 14:13:35,108 INFO L226 Difference]: Without dead ends: 7172 [2023-12-20 14:13:35,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:35,113 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1500 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:35,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:13:35,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7172 states. [2023-12-20 14:13:35,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7172 to 7170. [2023-12-20 14:13:35,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7170 states, 7168 states have (on average 1.501953125) internal successors, (10766), 7169 states have internal predecessors, (10766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7170 states to 7170 states and 10766 transitions. [2023-12-20 14:13:35,317 INFO L78 Accepts]: Start accepts. Automaton has 7170 states and 10766 transitions. Word has length 66 [2023-12-20 14:13:35,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:35,317 INFO L495 AbstractCegarLoop]: Abstraction has 7170 states and 10766 transitions. [2023-12-20 14:13:35,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:35,318 INFO L276 IsEmpty]: Start isEmpty. Operand 7170 states and 10766 transitions. [2023-12-20 14:13:35,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-20 14:13:35,318 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:35,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:35,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 14:13:35,318 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:35,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash -773477451, now seen corresponding path program 1 times [2023-12-20 14:13:35,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:35,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307794815] [2023-12-20 14:13:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:35,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:35,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:35,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307794815] [2023-12-20 14:13:35,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307794815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:35,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:35,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:13:35,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699988529] [2023-12-20 14:13:35,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:35,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:13:35,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:35,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:13:35,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:13:35,419 INFO L87 Difference]: Start difference. First operand 7170 states and 10766 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:40,610 INFO L93 Difference]: Finished difference Result 9425 states and 15075 transitions. [2023-12-20 14:13:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:13:40,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-20 14:13:40,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:40,624 INFO L225 Difference]: With dead ends: 9425 [2023-12-20 14:13:40,624 INFO L226 Difference]: Without dead ends: 8672 [2023-12-20 14:13:40,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 14:13:40,626 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 2420 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:40,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2420 Valid, 810 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-20 14:13:40,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8672 states. [2023-12-20 14:13:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8672 to 8672. [2023-12-20 14:13:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8672 states, 8670 states have (on average 1.4855824682814303) internal successors, (12880), 8671 states have internal predecessors, (12880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 12880 transitions. [2023-12-20 14:13:40,810 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 12880 transitions. Word has length 66 [2023-12-20 14:13:40,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:40,810 INFO L495 AbstractCegarLoop]: Abstraction has 8672 states and 12880 transitions. [2023-12-20 14:13:40,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:40,811 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 12880 transitions. [2023-12-20 14:13:40,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:13:40,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:40,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:40,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 14:13:40,813 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:40,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1981614661, now seen corresponding path program 1 times [2023-12-20 14:13:40,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:40,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540319880] [2023-12-20 14:13:40,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:40,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:13:40,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:40,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540319880] [2023-12-20 14:13:40,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540319880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:40,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:40,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:13:40,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745720479] [2023-12-20 14:13:40,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:40,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:13:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:40,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:13:40,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:13:40,939 INFO L87 Difference]: Start difference. First operand 8672 states and 12880 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:41,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:41,647 INFO L93 Difference]: Finished difference Result 46318 states and 67703 transitions. [2023-12-20 14:13:41,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:13:41,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 [2023-12-20 14:13:41,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:41,728 INFO L225 Difference]: With dead ends: 46318 [2023-12-20 14:13:41,728 INFO L226 Difference]: Without dead ends: 41836 [2023-12-20 14:13:41,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:13:41,740 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 8061 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8061 SdHoareTripleChecker+Valid, 3964 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:41,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8061 Valid, 3964 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:13:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41836 states. [2023-12-20 14:13:42,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41836 to 14112. [2023-12-20 14:13:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14112 states, 14110 states have (on average 1.4684620836286322) internal successors, (20720), 14111 states have internal predecessors, (20720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:42,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14112 states to 14112 states and 20720 transitions. [2023-12-20 14:13:42,224 INFO L78 Accepts]: Start accepts. Automaton has 14112 states and 20720 transitions. Word has length 86 [2023-12-20 14:13:42,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:42,224 INFO L495 AbstractCegarLoop]: Abstraction has 14112 states and 20720 transitions. [2023-12-20 14:13:42,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 14112 states and 20720 transitions. [2023-12-20 14:13:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:13:42,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:42,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:42,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 14:13:42,227 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:42,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:42,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1902965947, now seen corresponding path program 1 times [2023-12-20 14:13:42,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:42,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358517543] [2023-12-20 14:13:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:42,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 14:13:42,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:42,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358517543] [2023-12-20 14:13:42,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358517543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:42,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:42,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:13:42,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880807064] [2023-12-20 14:13:42,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:42,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:13:42,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:42,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:13:42,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:13:42,349 INFO L87 Difference]: Start difference. First operand 14112 states and 20720 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:43,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:43,151 INFO L93 Difference]: Finished difference Result 52686 states and 76919 transitions. [2023-12-20 14:13:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:13:43,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 [2023-12-20 14:13:43,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:43,225 INFO L225 Difference]: With dead ends: 52686 [2023-12-20 14:13:43,225 INFO L226 Difference]: Without dead ends: 46316 [2023-12-20 14:13:43,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:13:43,244 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 8063 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8063 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:43,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8063 Valid, 3935 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:13:43,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46316 states. [2023-12-20 14:13:43,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46316 to 22720. [2023-12-20 14:13:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22720 states, 22718 states have (on average 1.4571705255744343) internal successors, (33104), 22719 states have internal predecessors, (33104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:43,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22720 states to 22720 states and 33104 transitions. [2023-12-20 14:13:43,939 INFO L78 Accepts]: Start accepts. Automaton has 22720 states and 33104 transitions. Word has length 86 [2023-12-20 14:13:43,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:43,939 INFO L495 AbstractCegarLoop]: Abstraction has 22720 states and 33104 transitions. [2023-12-20 14:13:43,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:43,940 INFO L276 IsEmpty]: Start isEmpty. Operand 22720 states and 33104 transitions. [2023-12-20 14:13:43,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:13:43,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:43,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:43,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 14:13:43,943 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:43,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:43,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1674326715, now seen corresponding path program 1 times [2023-12-20 14:13:43,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:43,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559447230] [2023-12-20 14:13:43,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:43,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 14:13:44,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:44,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559447230] [2023-12-20 14:13:44,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559447230] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:44,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:44,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:13:44,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936672401] [2023-12-20 14:13:44,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:44,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:13:44,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:44,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:13:44,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:13:44,069 INFO L87 Difference]: Start difference. First operand 22720 states and 33104 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2023-12-20 14:13:45,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:45,197 INFO L93 Difference]: Finished difference Result 59054 states and 86103 transitions. [2023-12-20 14:13:45,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:13:45,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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 86 [2023-12-20 14:13:45,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:45,272 INFO L225 Difference]: With dead ends: 59054 [2023-12-20 14:13:45,272 INFO L226 Difference]: Without dead ends: 52684 [2023-12-20 14:13:45,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:13:45,295 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 8103 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8103 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:45,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8103 Valid, 3954 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:13:45,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52684 states. [2023-12-20 14:13:46,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52684 to 29088. [2023-12-20 14:13:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29088 states, 29086 states have (on average 1.4538953448394416) internal successors, (42288), 29087 states have internal predecessors, (42288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:46,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29088 states to 29088 states and 42288 transitions. [2023-12-20 14:13:46,189 INFO L78 Accepts]: Start accepts. Automaton has 29088 states and 42288 transitions. Word has length 86 [2023-12-20 14:13:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:46,190 INFO L495 AbstractCegarLoop]: Abstraction has 29088 states and 42288 transitions. [2023-12-20 14:13:46,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 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) [2023-12-20 14:13:46,190 INFO L276 IsEmpty]: Start isEmpty. Operand 29088 states and 42288 transitions. [2023-12-20 14:13:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:13:46,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:46,193 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:46,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 14:13:46,193 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:46,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:46,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1048670651, now seen corresponding path program 1 times [2023-12-20 14:13:46,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:46,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340917286] [2023-12-20 14:13:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:46,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 14:13:46,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:46,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340917286] [2023-12-20 14:13:46,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340917286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:46,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:46,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:13:46,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082178046] [2023-12-20 14:13:46,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:46,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:13:46,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:46,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:13:46,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:13:46,326 INFO L87 Difference]: Start difference. First operand 29088 states and 42288 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2023-12-20 14:13:47,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:47,549 INFO L93 Difference]: Finished difference Result 65422 states and 95287 transitions. [2023-12-20 14:13:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:13:47,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 86 [2023-12-20 14:13:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:47,620 INFO L225 Difference]: With dead ends: 65422 [2023-12-20 14:13:47,620 INFO L226 Difference]: Without dead ends: 59052 [2023-12-20 14:13:47,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:13:47,637 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8155 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8155 SdHoareTripleChecker+Valid, 3938 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:47,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8155 Valid, 3938 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:13:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59052 states. [2023-12-20 14:13:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59052 to 35456. [2023-12-20 14:13:48,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35456 states, 35454 states have (on average 1.4517966943081175) internal successors, (51472), 35455 states have internal predecessors, (51472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:48,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35456 states to 35456 states and 51472 transitions. [2023-12-20 14:13:48,701 INFO L78 Accepts]: Start accepts. Automaton has 35456 states and 51472 transitions. Word has length 86 [2023-12-20 14:13:48,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:48,702 INFO L495 AbstractCegarLoop]: Abstraction has 35456 states and 51472 transitions. [2023-12-20 14:13:48,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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) [2023-12-20 14:13:48,702 INFO L276 IsEmpty]: Start isEmpty. Operand 35456 states and 51472 transitions. [2023-12-20 14:13:48,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:13:48,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:48,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:48,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 14:13:48,706 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:48,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1937404091, now seen corresponding path program 1 times [2023-12-20 14:13:48,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:48,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141227797] [2023-12-20 14:13:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:48,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 14:13:48,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:48,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141227797] [2023-12-20 14:13:48,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141227797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:48,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:48,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:13:48,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169528385] [2023-12-20 14:13:48,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:48,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:13:48,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:48,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:13:48,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:13:48,814 INFO L87 Difference]: Start difference. First operand 35456 states and 51472 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2023-12-20 14:13:50,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:50,491 INFO L93 Difference]: Finished difference Result 71790 states and 104471 transitions. [2023-12-20 14:13:50,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:13:50,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 86 [2023-12-20 14:13:50,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:50,575 INFO L225 Difference]: With dead ends: 71790 [2023-12-20 14:13:50,575 INFO L226 Difference]: Without dead ends: 65420 [2023-12-20 14:13:50,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:13:50,602 INFO L413 NwaCegarLoop]: 1623 mSDtfsCounter, 8071 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8071 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:50,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8071 Valid, 3991 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:13:50,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65420 states. [2023-12-20 14:13:51,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65420 to 41824. [2023-12-20 14:13:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41824 states, 41822 states have (on average 1.4503371431304097) internal successors, (60656), 41823 states have internal predecessors, (60656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41824 states to 41824 states and 60656 transitions. [2023-12-20 14:13:51,955 INFO L78 Accepts]: Start accepts. Automaton has 41824 states and 60656 transitions. Word has length 86 [2023-12-20 14:13:51,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:51,955 INFO L495 AbstractCegarLoop]: Abstraction has 41824 states and 60656 transitions. [2023-12-20 14:13:51,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2023-12-20 14:13:51,955 INFO L276 IsEmpty]: Start isEmpty. Operand 41824 states and 60656 transitions. [2023-12-20 14:13:51,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 14:13:51,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:51,959 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:51,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 14:13:51,959 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:51,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:51,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1634382779, now seen corresponding path program 1 times [2023-12-20 14:13:51,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:51,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982391055] [2023-12-20 14:13:51,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:51,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 14:13:52,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:52,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982391055] [2023-12-20 14:13:52,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982391055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:52,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:52,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 14:13:52,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362076855] [2023-12-20 14:13:52,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:52,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:13:52,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:52,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:13:52,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:13:52,058 INFO L87 Difference]: Start difference. First operand 41824 states and 60656 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2023-12-20 14:13:53,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:53,682 INFO L93 Difference]: Finished difference Result 78158 states and 113655 transitions. [2023-12-20 14:13:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 14:13:53,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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 86 [2023-12-20 14:13:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:53,765 INFO L225 Difference]: With dead ends: 78158 [2023-12-20 14:13:53,766 INFO L226 Difference]: Without dead ends: 71788 [2023-12-20 14:13:53,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-20 14:13:53,786 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 8010 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8010 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:53,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8010 Valid, 4111 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 14:13:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71788 states. [2023-12-20 14:13:55,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71788 to 48192. [2023-12-20 14:13:55,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48192 states, 48190 states have (on average 1.4492633326416269) internal successors, (69840), 48191 states have internal predecessors, (69840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48192 states to 48192 states and 69840 transitions. [2023-12-20 14:13:55,673 INFO L78 Accepts]: Start accepts. Automaton has 48192 states and 69840 transitions. Word has length 86 [2023-12-20 14:13:55,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:55,674 INFO L495 AbstractCegarLoop]: Abstraction has 48192 states and 69840 transitions. [2023-12-20 14:13:55,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 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) [2023-12-20 14:13:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 48192 states and 69840 transitions. [2023-12-20 14:13:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-20 14:13:55,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:55,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:55,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 14:13:55,678 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:55,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:55,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1298476795, now seen corresponding path program 1 times [2023-12-20 14:13:55,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:55,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437423103] [2023-12-20 14:13:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:55,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:55,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:55,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437423103] [2023-12-20 14:13:55,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437423103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:55,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:55,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:13:55,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586016570] [2023-12-20 14:13:55,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:55,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:13:55,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:55,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:13:55,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:55,742 INFO L87 Difference]: Start difference. First operand 48192 states and 69840 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:56,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:56,867 INFO L93 Difference]: Finished difference Result 94084 states and 136082 transitions. [2023-12-20 14:13:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:13:56,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 [2023-12-20 14:13:56,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:56,916 INFO L225 Difference]: With dead ends: 94084 [2023-12-20 14:13:56,916 INFO L226 Difference]: Without dead ends: 48194 [2023-12-20 14:13:56,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:56,932 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 53 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:56,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:13:56,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48194 states. [2023-12-20 14:13:58,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48194 to 48192. [2023-12-20 14:13:58,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48192 states, 48190 states have (on average 1.4349865117244243) internal successors, (69152), 48191 states have internal predecessors, (69152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48192 states to 48192 states and 69152 transitions. [2023-12-20 14:13:58,377 INFO L78 Accepts]: Start accepts. Automaton has 48192 states and 69152 transitions. Word has length 87 [2023-12-20 14:13:58,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:58,378 INFO L495 AbstractCegarLoop]: Abstraction has 48192 states and 69152 transitions. [2023-12-20 14:13:58,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 48192 states and 69152 transitions. [2023-12-20 14:13:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 14:13:58,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:58,381 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:58,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 14:13:58,382 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:58,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:58,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1037402045, now seen corresponding path program 1 times [2023-12-20 14:13:58,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:58,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035691628] [2023-12-20 14:13:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:58,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:58,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:58,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:58,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035691628] [2023-12-20 14:13:58,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035691628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:58,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:58,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:13:58,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549501819] [2023-12-20 14:13:58,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:58,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:13:58,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:58,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:13:58,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:58,457 INFO L87 Difference]: Start difference. First operand 48192 states and 69152 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:58,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:58,866 INFO L93 Difference]: Finished difference Result 65016 states and 93415 transitions. [2023-12-20 14:13:58,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:13:58,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 [2023-12-20 14:13:58,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:58,886 INFO L225 Difference]: With dead ends: 65016 [2023-12-20 14:13:58,886 INFO L226 Difference]: Without dead ends: 19126 [2023-12-20 14:13:58,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:58,912 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 47 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:58,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:13:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19126 states. [2023-12-20 14:13:59,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19126 to 19119. [2023-12-20 14:13:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19119 states, 19117 states have (on average 1.4445258147198827) internal successors, (27615), 19118 states have internal predecessors, (27615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:59,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19119 states to 19119 states and 27615 transitions. [2023-12-20 14:13:59,567 INFO L78 Accepts]: Start accepts. Automaton has 19119 states and 27615 transitions. Word has length 88 [2023-12-20 14:13:59,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:13:59,567 INFO L495 AbstractCegarLoop]: Abstraction has 19119 states and 27615 transitions. [2023-12-20 14:13:59,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:59,568 INFO L276 IsEmpty]: Start isEmpty. Operand 19119 states and 27615 transitions. [2023-12-20 14:13:59,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 14:13:59,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:13:59,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:13:59,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 14:13:59,570 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:13:59,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:13:59,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1781311287, now seen corresponding path program 1 times [2023-12-20 14:13:59,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:13:59,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761065364] [2023-12-20 14:13:59,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:13:59,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:13:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:13:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:13:59,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:13:59,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761065364] [2023-12-20 14:13:59,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761065364] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:13:59,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:13:59,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:13:59,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680853654] [2023-12-20 14:13:59,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:13:59,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:13:59,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:13:59,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:13:59,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:59,664 INFO L87 Difference]: Start difference. First operand 19119 states and 27615 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:13:59,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:13:59,938 INFO L93 Difference]: Finished difference Result 27523 states and 39617 transitions. [2023-12-20 14:13:59,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:13:59,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-20 14:13:59,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:13:59,949 INFO L225 Difference]: With dead ends: 27523 [2023-12-20 14:13:59,949 INFO L226 Difference]: Without dead ends: 10721 [2023-12-20 14:13:59,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:13:59,960 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 49 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:13:59,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:13:59,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10721 states. [2023-12-20 14:14:00,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10721 to 10719. [2023-12-20 14:14:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10719 states, 10717 states have (on average 1.4458337221237287) internal successors, (15495), 10718 states have internal predecessors, (15495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 15495 transitions. [2023-12-20 14:14:00,276 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 15495 transitions. Word has length 89 [2023-12-20 14:14:00,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:00,276 INFO L495 AbstractCegarLoop]: Abstraction has 10719 states and 15495 transitions. [2023-12-20 14:14:00,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:00,276 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 15495 transitions. [2023-12-20 14:14:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-20 14:14:00,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:00,278 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:14:00,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 14:14:00,279 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:00,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:00,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2081860631, now seen corresponding path program 1 times [2023-12-20 14:14:00,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:00,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899101515] [2023-12-20 14:14:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:00,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:00,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:00,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899101515] [2023-12-20 14:14:00,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899101515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:14:00,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:14:00,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:14:00,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342098897] [2023-12-20 14:14:00,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:14:00,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:14:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:14:00,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:14:00,347 INFO L87 Difference]: Start difference. First operand 10719 states and 15495 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:00,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:14:00,484 INFO L93 Difference]: Finished difference Result 14923 states and 21437 transitions. [2023-12-20 14:14:00,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:14:00,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-20 14:14:00,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:14:00,491 INFO L225 Difference]: With dead ends: 14923 [2023-12-20 14:14:00,491 INFO L226 Difference]: Without dead ends: 6521 [2023-12-20 14:14:00,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:14:00,496 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 46 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:14:00,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3104 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:14:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2023-12-20 14:14:00,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 6519. [2023-12-20 14:14:00,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6519 states, 6517 states have (on average 1.4569587233389596) internal successors, (9495), 6518 states have internal predecessors, (9495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6519 states to 6519 states and 9495 transitions. [2023-12-20 14:14:00,766 INFO L78 Accepts]: Start accepts. Automaton has 6519 states and 9495 transitions. Word has length 91 [2023-12-20 14:14:00,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:00,766 INFO L495 AbstractCegarLoop]: Abstraction has 6519 states and 9495 transitions. [2023-12-20 14:14:00,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6519 states and 9495 transitions. [2023-12-20 14:14:00,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 14:14:00,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:00,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:14:00,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 14:14:00,770 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:00,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:00,770 INFO L85 PathProgramCache]: Analyzing trace with hash 207620325, now seen corresponding path program 1 times [2023-12-20 14:14:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:00,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878977941] [2023-12-20 14:14:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:00,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:00,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:00,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878977941] [2023-12-20 14:14:00,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878977941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:14:00,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:14:00,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:14:00,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099757825] [2023-12-20 14:14:00,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:14:00,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:14:00,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:00,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:14:00,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:14:00,825 INFO L87 Difference]: Start difference. First operand 6519 states and 9495 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:00,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:14:00,891 INFO L93 Difference]: Finished difference Result 8623 states and 12437 transitions. [2023-12-20 14:14:00,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:14:00,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2023-12-20 14:14:00,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:14:00,895 INFO L225 Difference]: With dead ends: 8623 [2023-12-20 14:14:00,895 INFO L226 Difference]: Without dead ends: 4421 [2023-12-20 14:14:00,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:14:00,898 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 43 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:14:00,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3089 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:14:00,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2023-12-20 14:14:00,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4419. [2023-12-20 14:14:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4419 states, 4417 states have (on average 1.477247000226398) internal successors, (6525), 4418 states have internal predecessors, (6525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:00,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 6525 transitions. [2023-12-20 14:14:00,968 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 6525 transitions. Word has length 93 [2023-12-20 14:14:00,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:00,968 INFO L495 AbstractCegarLoop]: Abstraction has 4419 states and 6525 transitions. [2023-12-20 14:14:00,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:00,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 6525 transitions. [2023-12-20 14:14:00,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 14:14:00,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:00,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:14:00,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 14:14:00,969 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:00,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:00,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1099411661, now seen corresponding path program 1 times [2023-12-20 14:14:00,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:00,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298474484] [2023-12-20 14:14:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:00,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:01,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:01,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298474484] [2023-12-20 14:14:01,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298474484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:14:01,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:14:01,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:14:01,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101148486] [2023-12-20 14:14:01,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:14:01,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 14:14:01,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:01,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 14:14:01,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:14:01,020 INFO L87 Difference]: Start difference. First operand 4419 states and 6525 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:01,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:14:01,061 INFO L93 Difference]: Finished difference Result 5473 states and 7982 transitions. [2023-12-20 14:14:01,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 14:14:01,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-20 14:14:01,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:14:01,065 INFO L225 Difference]: With dead ends: 5473 [2023-12-20 14:14:01,065 INFO L226 Difference]: Without dead ends: 3371 [2023-12-20 14:14:01,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 14:14:01,067 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 40 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:14:01,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3074 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:14:01,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2023-12-20 14:14:01,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3369. [2023-12-20 14:14:01,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3369 states, 3367 states have (on average 1.5013365013365014) internal successors, (5055), 3368 states have internal predecessors, (5055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 5055 transitions. [2023-12-20 14:14:01,113 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 5055 transitions. Word has length 95 [2023-12-20 14:14:01,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:01,113 INFO L495 AbstractCegarLoop]: Abstraction has 3369 states and 5055 transitions. [2023-12-20 14:14:01,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:01,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 5055 transitions. [2023-12-20 14:14:01,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 14:14:01,114 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:01,114 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:14:01,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 14:14:01,114 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:01,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:01,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1010802943, now seen corresponding path program 1 times [2023-12-20 14:14:01,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:01,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103158987] [2023-12-20 14:14:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:01,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:01,202 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:14:01,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:01,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103158987] [2023-12-20 14:14:01,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103158987] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:14:01,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355909220] [2023-12-20 14:14:01,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:01,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:01,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:14:01,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:14:01,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 14:14:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:01,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-20 14:14:01,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:14:01,461 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:14:01,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:14:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 14:14:01,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355909220] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:14:01,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:14:01,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2023-12-20 14:14:01,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655254285] [2023-12-20 14:14:01,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:14:01,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 14:14:01,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:01,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 14:14:01,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-20 14:14:01,751 INFO L87 Difference]: Start difference. First operand 3369 states and 5055 transitions. Second operand has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:01,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:14:01,909 INFO L93 Difference]: Finished difference Result 5905 states and 8454 transitions. [2023-12-20 14:14:01,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 14:14:01,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 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 97 [2023-12-20 14:14:01,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:14:01,913 INFO L225 Difference]: With dead ends: 5905 [2023-12-20 14:14:01,914 INFO L226 Difference]: Without dead ends: 4853 [2023-12-20 14:14:01,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2023-12-20 14:14:01,915 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 5944 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5944 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:14:01,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5944 Valid, 3439 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 14:14:01,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2023-12-20 14:14:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4776. [2023-12-20 14:14:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4776 states, 4774 states have (on average 1.434017595307918) internal successors, (6846), 4775 states have internal predecessors, (6846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4776 states to 4776 states and 6846 transitions. [2023-12-20 14:14:02,022 INFO L78 Accepts]: Start accepts. Automaton has 4776 states and 6846 transitions. Word has length 97 [2023-12-20 14:14:02,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:02,023 INFO L495 AbstractCegarLoop]: Abstraction has 4776 states and 6846 transitions. [2023-12-20 14:14:02,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:02,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4776 states and 6846 transitions. [2023-12-20 14:14:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 14:14:02,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:02,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:14:02,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 14:14:02,229 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,SelfDestructingSolverStorable25 [2023-12-20 14:14:02,232 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:02,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:02,232 INFO L85 PathProgramCache]: Analyzing trace with hash 806498379, now seen corresponding path program 1 times [2023-12-20 14:14:02,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:02,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244735875] [2023-12-20 14:14:02,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:02,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:02,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:02,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:02,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244735875] [2023-12-20 14:14:02,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244735875] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:14:02,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339162948] [2023-12-20 14:14:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:02,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:02,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:14:02,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:14:02,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 14:14:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:03,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 14:14:03,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:14:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:03,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:14:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:04,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339162948] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:14:04,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:14:04,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-12-20 14:14:04,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888173930] [2023-12-20 14:14:04,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:14:04,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 14:14:04,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:04,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 14:14:04,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2023-12-20 14:14:04,034 INFO L87 Difference]: Start difference. First operand 4776 states and 6846 transitions. Second operand has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:14:06,347 INFO L93 Difference]: Finished difference Result 16620 states and 22407 transitions. [2023-12-20 14:14:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-20 14:14:06,347 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-20 14:14:06,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:14:06,359 INFO L225 Difference]: With dead ends: 16620 [2023-12-20 14:14:06,360 INFO L226 Difference]: Without dead ends: 14205 [2023-12-20 14:14:06,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1004, Invalid=3966, Unknown=0, NotChecked=0, Total=4970 [2023-12-20 14:14:06,364 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 22632 mSDsluCounter, 8247 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22632 SdHoareTripleChecker+Valid, 9770 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:14:06,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22632 Valid, 9770 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:14:06,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14205 states. [2023-12-20 14:14:06,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14205 to 13413. [2023-12-20 14:14:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13413 states, 13411 states have (on average 1.3471776899560062) internal successors, (18067), 13412 states have internal predecessors, (18067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:06,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13413 states to 13413 states and 18067 transitions. [2023-12-20 14:14:06,677 INFO L78 Accepts]: Start accepts. Automaton has 13413 states and 18067 transitions. Word has length 98 [2023-12-20 14:14:06,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:06,678 INFO L495 AbstractCegarLoop]: Abstraction has 13413 states and 18067 transitions. [2023-12-20 14:14:06,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.827586206896552) internal successors, (256), 28 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:06,678 INFO L276 IsEmpty]: Start isEmpty. Operand 13413 states and 18067 transitions. [2023-12-20 14:14:06,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 14:14:06,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:06,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:14:06,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 14:14:06,884 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,SelfDestructingSolverStorable26 [2023-12-20 14:14:06,884 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:06,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1190406581, now seen corresponding path program 1 times [2023-12-20 14:14:06,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:06,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887522691] [2023-12-20 14:14:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:06,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:07,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:07,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887522691] [2023-12-20 14:14:07,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887522691] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:14:07,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778704293] [2023-12-20 14:14:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:07,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:07,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:14:07,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:14:07,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 14:14:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:07,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:14:07,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:14:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:08,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:14:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:09,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778704293] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:14:09,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:14:09,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2023-12-20 14:14:09,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489954719] [2023-12-20 14:14:09,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:14:09,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 14:14:09,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:09,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 14:14:09,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 14:14:09,050 INFO L87 Difference]: Start difference. First operand 13413 states and 18067 transitions. Second operand has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:14:13,612 INFO L93 Difference]: Finished difference Result 65525 states and 85786 transitions. [2023-12-20 14:14:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-20 14:14:13,612 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2023-12-20 14:14:13,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:14:13,668 INFO L225 Difference]: With dead ends: 65525 [2023-12-20 14:14:13,669 INFO L226 Difference]: Without dead ends: 54767 [2023-12-20 14:14:13,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2233 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1531, Invalid=7025, Unknown=0, NotChecked=0, Total=8556 [2023-12-20 14:14:13,689 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 20859 mSDsluCounter, 9896 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20859 SdHoareTripleChecker+Valid, 11421 SdHoareTripleChecker+Invalid, 2099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:14:13,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20859 Valid, 11421 Invalid, 2099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:14:13,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54767 states. [2023-12-20 14:14:15,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54767 to 50423. [2023-12-20 14:14:15,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50423 states, 50421 states have (on average 1.297138097221396) internal successors, (65403), 50422 states have internal predecessors, (65403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:15,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50423 states to 50423 states and 65403 transitions. [2023-12-20 14:14:15,140 INFO L78 Accepts]: Start accepts. Automaton has 50423 states and 65403 transitions. Word has length 98 [2023-12-20 14:14:15,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:15,140 INFO L495 AbstractCegarLoop]: Abstraction has 50423 states and 65403 transitions. [2023-12-20 14:14:15,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.882352941176471) internal successors, (268), 34 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:15,140 INFO L276 IsEmpty]: Start isEmpty. Operand 50423 states and 65403 transitions. [2023-12-20 14:14:15,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 14:14:15,142 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:15,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:14:15,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 14:14:15,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:15,344 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:15,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash 545897423, now seen corresponding path program 1 times [2023-12-20 14:14:15,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:15,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451743912] [2023-12-20 14:14:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:15,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:15,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:15,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451743912] [2023-12-20 14:14:15,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451743912] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:14:15,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540716821] [2023-12-20 14:14:15,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:15,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:15,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:14:15,573 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:14:15,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 14:14:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:15,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 14:14:15,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:14:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:16,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:14:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:16,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540716821] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:14:16,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:14:16,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-20 14:14:16,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885982839] [2023-12-20 14:14:16,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:14:16,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 14:14:16,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:16,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 14:14:16,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2023-12-20 14:14:16,720 INFO L87 Difference]: Start difference. First operand 50423 states and 65403 transitions. Second operand has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:19,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:14:19,096 INFO L93 Difference]: Finished difference Result 100270 states and 129149 transitions. [2023-12-20 14:14:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-20 14:14:19,097 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 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 99 [2023-12-20 14:14:19,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:14:19,154 INFO L225 Difference]: With dead ends: 100270 [2023-12-20 14:14:19,154 INFO L226 Difference]: Without dead ends: 54323 [2023-12-20 14:14:19,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=690, Invalid=2616, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 14:14:19,263 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 17503 mSDsluCounter, 8128 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17503 SdHoareTripleChecker+Valid, 9658 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:14:19,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17503 Valid, 9658 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:14:19,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54323 states. [2023-12-20 14:14:20,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54323 to 40853. [2023-12-20 14:14:20,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40853 states, 40851 states have (on average 1.2725514675283347) internal successors, (51985), 40852 states have internal predecessors, (51985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:20,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40853 states to 40853 states and 51985 transitions. [2023-12-20 14:14:20,485 INFO L78 Accepts]: Start accepts. Automaton has 40853 states and 51985 transitions. Word has length 99 [2023-12-20 14:14:20,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:20,485 INFO L495 AbstractCegarLoop]: Abstraction has 40853 states and 51985 transitions. [2023-12-20 14:14:20,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.36) internal successors, (284), 24 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:20,485 INFO L276 IsEmpty]: Start isEmpty. Operand 40853 states and 51985 transitions. [2023-12-20 14:14:20,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 14:14:20,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:20,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:14:20,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 14:14:20,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 14:14:20,692 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:20,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:20,692 INFO L85 PathProgramCache]: Analyzing trace with hash -773157797, now seen corresponding path program 1 times [2023-12-20 14:14:20,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:20,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106945882] [2023-12-20 14:14:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:20,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:20,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:20,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106945882] [2023-12-20 14:14:20,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106945882] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:14:20,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289788911] [2023-12-20 14:14:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:20,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:20,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:14:20,949 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:14:20,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 14:14:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:21,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 14:14:21,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:14:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:21,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:14:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:22,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289788911] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:14:22,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:14:22,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 15] total 35 [2023-12-20 14:14:22,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284013716] [2023-12-20 14:14:22,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:14:22,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 14:14:22,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:22,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 14:14:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1042, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 14:14:22,883 INFO L87 Difference]: Start difference. First operand 40853 states and 51985 transitions. Second operand has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:26,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:14:26,716 INFO L93 Difference]: Finished difference Result 92210 states and 115461 transitions. [2023-12-20 14:14:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-20 14:14:26,716 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-12-20 14:14:26,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:14:26,776 INFO L225 Difference]: With dead ends: 92210 [2023-12-20 14:14:26,777 INFO L226 Difference]: Without dead ends: 56820 [2023-12-20 14:14:26,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1359 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1152, Invalid=4398, Unknown=0, NotChecked=0, Total=5550 [2023-12-20 14:14:26,799 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 19415 mSDsluCounter, 16943 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19415 SdHoareTripleChecker+Valid, 18466 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 14:14:26,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19415 Valid, 18466 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 14:14:26,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56820 states. [2023-12-20 14:14:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56820 to 49092. [2023-12-20 14:14:28,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49092 states, 49090 states have (on average 1.2589325728254226) internal successors, (61801), 49091 states have internal predecessors, (61801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49092 states to 49092 states and 61801 transitions. [2023-12-20 14:14:28,516 INFO L78 Accepts]: Start accepts. Automaton has 49092 states and 61801 transitions. Word has length 100 [2023-12-20 14:14:28,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:28,517 INFO L495 AbstractCegarLoop]: Abstraction has 49092 states and 61801 transitions. [2023-12-20 14:14:28,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:28,517 INFO L276 IsEmpty]: Start isEmpty. Operand 49092 states and 61801 transitions. [2023-12-20 14:14:28,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 14:14:28,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:28,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:14:28,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 14:14:28,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:28,724 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:28,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:28,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1322403255, now seen corresponding path program 1 times [2023-12-20 14:14:28,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:28,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890739143] [2023-12-20 14:14:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:28,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:29,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:29,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890739143] [2023-12-20 14:14:29,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890739143] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:14:29,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489136805] [2023-12-20 14:14:29,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:29,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:29,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:14:29,006 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:14:29,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 14:14:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:29,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 14:14:29,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:14:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:29,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:14:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:30,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489136805] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:14:30,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:14:30,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-20 14:14:30,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458823734] [2023-12-20 14:14:30,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:14:30,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 14:14:30,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:30,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 14:14:30,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-20 14:14:30,565 INFO L87 Difference]: Start difference. First operand 49092 states and 61801 transitions. Second operand has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:33,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:14:33,825 INFO L93 Difference]: Finished difference Result 141832 states and 177153 transitions. [2023-12-20 14:14:33,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 14:14:33,826 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 14:14:33,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:14:33,928 INFO L225 Difference]: With dead ends: 141832 [2023-12-20 14:14:33,928 INFO L226 Difference]: Without dead ends: 100463 [2023-12-20 14:14:33,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 14:14:33,945 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 10937 mSDsluCounter, 6396 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10937 SdHoareTripleChecker+Valid, 7932 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:14:33,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10937 Valid, 7932 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 14:14:33,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100463 states. [2023-12-20 14:14:37,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100463 to 95799. [2023-12-20 14:14:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95799 states, 95797 states have (on average 1.241510694489389) internal successors, (118933), 95798 states have internal predecessors, (118933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:37,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95799 states to 95799 states and 118933 transitions. [2023-12-20 14:14:37,276 INFO L78 Accepts]: Start accepts. Automaton has 95799 states and 118933 transitions. Word has length 101 [2023-12-20 14:14:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:37,276 INFO L495 AbstractCegarLoop]: Abstraction has 95799 states and 118933 transitions. [2023-12-20 14:14:37,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.428571428571429) internal successors, (264), 28 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 95799 states and 118933 transitions. [2023-12-20 14:14:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 14:14:37,279 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:37,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:14:37,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 14:14:37,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:37,484 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:37,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:37,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1425391795, now seen corresponding path program 1 times [2023-12-20 14:14:37,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:37,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537378269] [2023-12-20 14:14:37,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:37,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:38,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:38,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537378269] [2023-12-20 14:14:38,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537378269] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:14:38,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849560361] [2023-12-20 14:14:38,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:38,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:38,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:14:38,285 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:14:38,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 14:14:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:38,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 14:14:38,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:14:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:39,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:14:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:40,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849560361] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:14:40,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:14:40,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-12-20 14:14:40,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025477168] [2023-12-20 14:14:40,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:14:40,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-20 14:14:40,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:14:40,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-20 14:14:40,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-12-20 14:14:40,153 INFO L87 Difference]: Start difference. First operand 95799 states and 118933 transitions. Second operand has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:53,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:14:53,276 INFO L93 Difference]: Finished difference Result 264657 states and 326124 transitions. [2023-12-20 14:14:53,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-12-20 14:14:53,277 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-20 14:14:53,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:14:53,620 INFO L225 Difference]: With dead ends: 264657 [2023-12-20 14:14:53,620 INFO L226 Difference]: Without dead ends: 225851 [2023-12-20 14:14:53,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4969 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2836, Invalid=12664, Unknown=0, NotChecked=0, Total=15500 [2023-12-20 14:14:53,663 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 17346 mSDsluCounter, 19345 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17346 SdHoareTripleChecker+Valid, 20914 SdHoareTripleChecker+Invalid, 2416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:14:53,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17346 Valid, 20914 Invalid, 2416 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 14:14:53,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225851 states. [2023-12-20 14:14:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225851 to 81247. [2023-12-20 14:14:57,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81247 states, 81245 states have (on average 1.2399163025416948) internal successors, (100737), 81246 states have internal predecessors, (100737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81247 states to 81247 states and 100737 transitions. [2023-12-20 14:14:57,597 INFO L78 Accepts]: Start accepts. Automaton has 81247 states and 100737 transitions. Word has length 102 [2023-12-20 14:14:57,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:14:57,597 INFO L495 AbstractCegarLoop]: Abstraction has 81247 states and 100737 transitions. [2023-12-20 14:14:57,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.147058823529411) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:14:57,597 INFO L276 IsEmpty]: Start isEmpty. Operand 81247 states and 100737 transitions. [2023-12-20 14:14:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 14:14:57,600 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:14:57,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:14:57,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 14:14:57,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:57,804 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:14:57,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:14:57,805 INFO L85 PathProgramCache]: Analyzing trace with hash 578499507, now seen corresponding path program 1 times [2023-12-20 14:14:57,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:14:57,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331800195] [2023-12-20 14:14:57,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:57,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:14:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:58,377 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:58,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:14:58,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331800195] [2023-12-20 14:14:58,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331800195] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:14:58,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286071353] [2023-12-20 14:14:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:14:58,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:14:58,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:14:58,379 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:14:58,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 14:14:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:14:58,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 14:14:58,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:14:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:14:59,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:15:00,166 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:15:00,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286071353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:15:00,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:15:00,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2023-12-20 14:15:00,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702962345] [2023-12-20 14:15:00,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:15:00,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 14:15:00,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:15:00,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 14:15:00,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 14:15:00,168 INFO L87 Difference]: Start difference. First operand 81247 states and 100737 transitions. Second operand has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:15:11,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:15:11,657 INFO L93 Difference]: Finished difference Result 180294 states and 222293 transitions. [2023-12-20 14:15:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-20 14:15:11,657 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-20 14:15:11,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:15:11,881 INFO L225 Difference]: With dead ends: 180294 [2023-12-20 14:15:11,881 INFO L226 Difference]: Without dead ends: 139466 [2023-12-20 14:15:11,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3677 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2474, Invalid=10182, Unknown=0, NotChecked=0, Total=12656 [2023-12-20 14:15:11,919 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 14441 mSDsluCounter, 22815 mSDsCounter, 0 mSdLazyCounter, 2816 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14441 SdHoareTripleChecker+Valid, 24426 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:15:11,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14441 Valid, 24426 Invalid, 2891 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 2816 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 14:15:11,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139466 states. [2023-12-20 14:15:14,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139466 to 62519. [2023-12-20 14:15:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62519 states, 62517 states have (on average 1.2422541068829278) internal successors, (77662), 62518 states have internal predecessors, (77662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:15:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62519 states to 62519 states and 77662 transitions. [2023-12-20 14:15:14,995 INFO L78 Accepts]: Start accepts. Automaton has 62519 states and 77662 transitions. Word has length 102 [2023-12-20 14:15:14,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:15:14,995 INFO L495 AbstractCegarLoop]: Abstraction has 62519 states and 77662 transitions. [2023-12-20 14:15:14,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.3428571428571425) internal successors, (257), 35 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:15:14,995 INFO L276 IsEmpty]: Start isEmpty. Operand 62519 states and 77662 transitions. [2023-12-20 14:15:14,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 14:15:14,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:15:14,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:15:15,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 14:15:15,203 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,SelfDestructingSolverStorable32 [2023-12-20 14:15:15,204 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:15:15,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:15:15,204 INFO L85 PathProgramCache]: Analyzing trace with hash -652250555, now seen corresponding path program 1 times [2023-12-20 14:15:15,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:15:15,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708976024] [2023-12-20 14:15:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:15:15,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:15:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:15:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:15:17,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:15:17,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708976024] [2023-12-20 14:15:17,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708976024] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:15:17,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619780387] [2023-12-20 14:15:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:15:17,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:15:17,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:15:17,406 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:15:17,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 14:15:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:15:17,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-20 14:15:17,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:15:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:15:19,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:15:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:15:21,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619780387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:15:21,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:15:21,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 17, 18] total 66 [2023-12-20 14:15:21,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645592642] [2023-12-20 14:15:21,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:15:21,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-20 14:15:21,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:15:21,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-20 14:15:21,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3985, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 14:15:21,638 INFO L87 Difference]: Start difference. First operand 62519 states and 77662 transitions. Second operand has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:16:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:16:26,285 INFO L93 Difference]: Finished difference Result 182347 states and 223689 transitions. [2023-12-20 14:16:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 353 states. [2023-12-20 14:16:26,285 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-20 14:16:26,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:16:26,427 INFO L225 Difference]: With dead ends: 182347 [2023-12-20 14:16:26,428 INFO L226 Difference]: Without dead ends: 155733 [2023-12-20 14:16:26,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65418 ImplicationChecksByTransitivity, 48.7s TimeCoverageRelationStatistics Valid=28073, Invalid=145399, Unknown=0, NotChecked=0, Total=173472 [2023-12-20 14:16:26,456 INFO L413 NwaCegarLoop]: 1749 mSDtfsCounter, 40670 mSDsluCounter, 45983 mSDsCounter, 0 mSdLazyCounter, 18991 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40670 SdHoareTripleChecker+Valid, 47732 SdHoareTripleChecker+Invalid, 19212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 18991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:16:26,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40670 Valid, 47732 Invalid, 19212 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [221 Valid, 18991 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-12-20 14:16:26,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155733 states. [2023-12-20 14:16:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155733 to 93707. [2023-12-20 14:16:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93707 states, 93705 states have (on average 1.237489995197695) internal successors, (115959), 93706 states have internal predecessors, (115959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:16:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93707 states to 93707 states and 115959 transitions. [2023-12-20 14:16:31,717 INFO L78 Accepts]: Start accepts. Automaton has 93707 states and 115959 transitions. Word has length 103 [2023-12-20 14:16:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:16:31,718 INFO L495 AbstractCegarLoop]: Abstraction has 93707 states and 115959 transitions. [2023-12-20 14:16:31,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.136363636363637) internal successors, (273), 66 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:16:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 93707 states and 115959 transitions. [2023-12-20 14:16:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-20 14:16:31,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:16:31,723 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-20 14:16:31,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-20 14:16:31,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:16:31,924 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:16:31,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:16:31,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1398061026, now seen corresponding path program 1 times [2023-12-20 14:16:31,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:16:31,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673070163] [2023-12-20 14:16:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:16:31,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:16:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:16:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:16:32,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:16:32,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673070163] [2023-12-20 14:16:32,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673070163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 14:16:32,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 14:16:32,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 14:16:32,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952019395] [2023-12-20 14:16:32,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 14:16:32,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 14:16:32,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:16:32,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 14:16:32,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:16:32,020 INFO L87 Difference]: Start difference. First operand 93707 states and 115959 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:16:39,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:16:39,228 INFO L93 Difference]: Finished difference Result 97501 states and 122322 transitions. [2023-12-20 14:16:39,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 14:16:39,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 [2023-12-20 14:16:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:16:39,318 INFO L225 Difference]: With dead ends: 97501 [2023-12-20 14:16:39,318 INFO L226 Difference]: Without dead ends: 95209 [2023-12-20 14:16:39,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 14:16:39,332 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 823 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 3100 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 3829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-20 14:16:39,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 923 Invalid, 3829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3100 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-20 14:16:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95209 states. [2023-12-20 14:16:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95209 to 94458. [2023-12-20 14:16:44,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94458 states, 94456 states have (on average 1.2356229355467097) internal successors, (116712), 94457 states have internal predecessors, (116712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:16:44,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94458 states to 94458 states and 116712 transitions. [2023-12-20 14:16:44,282 INFO L78 Accepts]: Start accepts. Automaton has 94458 states and 116712 transitions. Word has length 137 [2023-12-20 14:16:44,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:16:44,282 INFO L495 AbstractCegarLoop]: Abstraction has 94458 states and 116712 transitions. [2023-12-20 14:16:44,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:16:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 94458 states and 116712 transitions. [2023-12-20 14:16:44,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-20 14:16:44,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:16:44,297 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:16:44,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 14:16:44,297 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:16:44,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:16:44,298 INFO L85 PathProgramCache]: Analyzing trace with hash -206892047, now seen corresponding path program 1 times [2023-12-20 14:16:44,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:16:44,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858829430] [2023-12-20 14:16:44,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:16:44,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:16:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:16:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 29 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:16:44,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:16:44,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858829430] [2023-12-20 14:16:44,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858829430] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:16:44,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137766189] [2023-12-20 14:16:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:16:44,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:16:44,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:16:44,942 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) [2023-12-20 14:16:44,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 14:16:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:16:45,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 14:16:45,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:16:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 76 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:16:45,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:16:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 55 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:16:46,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137766189] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:16:46,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:16:46,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-12-20 14:16:46,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593670891] [2023-12-20 14:16:46,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:16:46,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 14:16:46,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:16:46,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 14:16:46,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 14:16:46,626 INFO L87 Difference]: Start difference. First operand 94458 states and 116712 transitions. Second operand has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:16:59,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:16:59,887 INFO L93 Difference]: Finished difference Result 233998 states and 289273 transitions. [2023-12-20 14:16:59,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-20 14:16:59,887 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 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 157 [2023-12-20 14:16:59,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:17:00,065 INFO L225 Difference]: With dead ends: 233998 [2023-12-20 14:17:00,065 INFO L226 Difference]: Without dead ends: 165246 [2023-12-20 14:17:00,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4876 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=3083, Invalid=14209, Unknown=0, NotChecked=0, Total=17292 [2023-12-20 14:17:00,107 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 18329 mSDsluCounter, 15752 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18329 SdHoareTripleChecker+Valid, 17288 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 14:17:00,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18329 Valid, 17288 Invalid, 2199 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 14:17:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165246 states. [2023-12-20 14:17:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165246 to 91930. [2023-12-20 14:17:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91930 states, 91928 states have (on average 1.2267100339396049) internal successors, (112769), 91929 states have internal predecessors, (112769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:05,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91930 states to 91930 states and 112769 transitions. [2023-12-20 14:17:05,652 INFO L78 Accepts]: Start accepts. Automaton has 91930 states and 112769 transitions. Word has length 157 [2023-12-20 14:17:05,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:17:05,652 INFO L495 AbstractCegarLoop]: Abstraction has 91930 states and 112769 transitions. [2023-12-20 14:17:05,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 12.909090909090908) internal successors, (426), 33 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:05,652 INFO L276 IsEmpty]: Start isEmpty. Operand 91930 states and 112769 transitions. [2023-12-20 14:17:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-20 14:17:05,665 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:17:05,665 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:17:05,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 14:17:05,867 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,SelfDestructingSolverStorable35 [2023-12-20 14:17:05,868 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:17:05,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:17:05,868 INFO L85 PathProgramCache]: Analyzing trace with hash -131074223, now seen corresponding path program 1 times [2023-12-20 14:17:05,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:17:05,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006479359] [2023-12-20 14:17:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:17:05,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:17:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:17:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 40 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:17:06,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:17:06,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006479359] [2023-12-20 14:17:06,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006479359] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:17:06,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104601735] [2023-12-20 14:17:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:17:06,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:17:06,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:17:06,359 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) [2023-12-20 14:17:06,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 14:17:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:17:06,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 14:17:06,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:17:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 42 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:17:07,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:17:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 40 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:17:08,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104601735] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:17:08,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:17:08,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 14:17:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116322899] [2023-12-20 14:17:08,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:17:08,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 14:17:08,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:17:08,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 14:17:08,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2023-12-20 14:17:08,778 INFO L87 Difference]: Start difference. First operand 91930 states and 112769 transitions. Second operand has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:14,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:17:14,623 INFO L93 Difference]: Finished difference Result 148968 states and 183144 transitions. [2023-12-20 14:17:14,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 14:17:14,623 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 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 158 [2023-12-20 14:17:14,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:17:14,835 INFO L225 Difference]: With dead ends: 148968 [2023-12-20 14:17:14,835 INFO L226 Difference]: Without dead ends: 104282 [2023-12-20 14:17:14,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 300 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=456, Invalid=1524, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 14:17:14,870 INFO L413 NwaCegarLoop]: 1507 mSDtfsCounter, 10375 mSDsluCounter, 10776 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10375 SdHoareTripleChecker+Valid, 12283 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 14:17:14,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10375 Valid, 12283 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 14:17:14,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104282 states. [2023-12-20 14:17:20,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104282 to 91930. [2023-12-20 14:17:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91930 states, 91928 states have (on average 1.22129275084849) internal successors, (112271), 91929 states have internal predecessors, (112271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91930 states to 91930 states and 112271 transitions. [2023-12-20 14:17:20,554 INFO L78 Accepts]: Start accepts. Automaton has 91930 states and 112271 transitions. Word has length 158 [2023-12-20 14:17:20,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:17:20,554 INFO L495 AbstractCegarLoop]: Abstraction has 91930 states and 112271 transitions. [2023-12-20 14:17:20,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 12.814814814814815) internal successors, (346), 26 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:20,554 INFO L276 IsEmpty]: Start isEmpty. Operand 91930 states and 112271 transitions. [2023-12-20 14:17:20,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-20 14:17:20,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:17:20,566 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:17:20,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 14:17:20,766 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,SelfDestructingSolverStorable36 [2023-12-20 14:17:20,766 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:17:20,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:17:20,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2022996503, now seen corresponding path program 1 times [2023-12-20 14:17:20,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:17:20,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113780627] [2023-12-20 14:17:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:17:20,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:17:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:17:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 47 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:17:21,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:17:21,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113780627] [2023-12-20 14:17:21,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113780627] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:17:21,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324697318] [2023-12-20 14:17:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:17:21,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:17:21,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:17:21,333 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) [2023-12-20 14:17:21,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 14:17:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:17:21,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 14:17:21,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:17:22,337 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 27 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:17:22,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:17:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 21 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:17:23,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324697318] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:17:23,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:17:23,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 31 [2023-12-20 14:17:23,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770229600] [2023-12-20 14:17:23,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:17:23,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 14:17:23,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:17:23,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 14:17:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2023-12-20 14:17:23,934 INFO L87 Difference]: Start difference. First operand 91930 states and 112271 transitions. Second operand has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:34,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:17:34,180 INFO L93 Difference]: Finished difference Result 171432 states and 209481 transitions. [2023-12-20 14:17:34,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-20 14:17:34,180 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 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 158 [2023-12-20 14:17:34,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:17:34,307 INFO L225 Difference]: With dead ends: 171432 [2023-12-20 14:17:34,307 INFO L226 Difference]: Without dead ends: 104722 [2023-12-20 14:17:34,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2153 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1750, Invalid=7756, Unknown=0, NotChecked=0, Total=9506 [2023-12-20 14:17:34,344 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 20152 mSDsluCounter, 15662 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20152 SdHoareTripleChecker+Valid, 17185 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 14:17:34,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20152 Valid, 17185 Invalid, 2218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 2178 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 14:17:34,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104722 states. [2023-12-20 14:17:40,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104722 to 91930. [2023-12-20 14:17:40,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91930 states, 91928 states have (on average 1.2099686711339308) internal successors, (111230), 91929 states have internal predecessors, (111230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:40,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91930 states to 91930 states and 111230 transitions. [2023-12-20 14:17:40,494 INFO L78 Accepts]: Start accepts. Automaton has 91930 states and 111230 transitions. Word has length 158 [2023-12-20 14:17:40,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:17:40,494 INFO L495 AbstractCegarLoop]: Abstraction has 91930 states and 111230 transitions. [2023-12-20 14:17:40,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 14.09375) internal successors, (451), 31 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:40,494 INFO L276 IsEmpty]: Start isEmpty. Operand 91930 states and 111230 transitions. [2023-12-20 14:17:40,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-20 14:17:40,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:17:40,507 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 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] [2023-12-20 14:17:40,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 14:17:40,707 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,SelfDestructingSolverStorable37 [2023-12-20 14:17:40,707 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:17:40,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:17:40,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1219131585, now seen corresponding path program 1 times [2023-12-20 14:17:40,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:17:40,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969838322] [2023-12-20 14:17:40,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:17:40,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:17:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:17:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:17:41,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:17:41,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969838322] [2023-12-20 14:17:41,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969838322] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:17:41,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91679418] [2023-12-20 14:17:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:17:41,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:17:41,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:17:41,457 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) [2023-12-20 14:17:41,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 14:17:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:17:41,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 14:17:41,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:17:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:17:42,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:17:44,222 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 13 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:17:44,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91679418] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:17:44,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:17:44,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2023-12-20 14:17:44,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128228930] [2023-12-20 14:17:44,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:17:44,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 14:17:44,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:17:44,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 14:17:44,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2023-12-20 14:17:44,224 INFO L87 Difference]: Start difference. First operand 91930 states and 111230 transitions. Second operand has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:50,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:17:50,451 INFO L93 Difference]: Finished difference Result 143114 states and 173203 transitions. [2023-12-20 14:17:50,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 14:17:50,451 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2023-12-20 14:17:50,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:17:50,551 INFO L225 Difference]: With dead ends: 143114 [2023-12-20 14:17:50,551 INFO L226 Difference]: Without dead ends: 92694 [2023-12-20 14:17:50,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 303 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=474, Invalid=1506, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 14:17:50,585 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 18853 mSDsluCounter, 9084 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18853 SdHoareTripleChecker+Valid, 10590 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 14:17:50,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18853 Valid, 10590 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 14:17:50,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92694 states. [2023-12-20 14:17:56,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92694 to 91930. [2023-12-20 14:17:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91930 states, 91928 states have (on average 1.202919676268384) internal successors, (110582), 91929 states have internal predecessors, (110582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:56,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91930 states to 91930 states and 110582 transitions. [2023-12-20 14:17:56,881 INFO L78 Accepts]: Start accepts. Automaton has 91930 states and 110582 transitions. Word has length 160 [2023-12-20 14:17:56,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:17:56,881 INFO L495 AbstractCegarLoop]: Abstraction has 91930 states and 110582 transitions. [2023-12-20 14:17:56,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 14.172413793103448) internal successors, (411), 28 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:17:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 91930 states and 110582 transitions. [2023-12-20 14:17:56,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-20 14:17:56,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:17:56,894 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 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] [2023-12-20 14:17:56,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-20 14:17:57,094 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,SelfDestructingSolverStorable38 [2023-12-20 14:17:57,095 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:17:57,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:17:57,095 INFO L85 PathProgramCache]: Analyzing trace with hash -491598411, now seen corresponding path program 1 times [2023-12-20 14:17:57,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:17:57,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844816457] [2023-12-20 14:17:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:17:57,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:17:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:17:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:17:57,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:17:57,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844816457] [2023-12-20 14:17:57,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844816457] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:17:57,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882114923] [2023-12-20 14:17:57,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:17:57,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:17:57,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:17:57,832 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:17:57,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 14:17:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:17:57,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-20 14:17:57,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:18:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:18:00,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:18:04,107 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:18:04,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882114923] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:18:04,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:18:04,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 22] total 62 [2023-12-20 14:18:04,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570033378] [2023-12-20 14:18:04,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:18:04,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-20 14:18:04,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:18:04,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-20 14:18:04,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=3431, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 14:18:04,110 INFO L87 Difference]: Start difference. First operand 91930 states and 110582 transitions. Second operand has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:16,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:19:16,783 INFO L93 Difference]: Finished difference Result 419841 states and 502193 transitions. [2023-12-20 14:19:16,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 290 states. [2023-12-20 14:19:16,783 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-12-20 14:19:16,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:19:17,312 INFO L225 Difference]: With dead ends: 419841 [2023-12-20 14:19:17,312 INFO L226 Difference]: Without dead ends: 369721 [2023-12-20 14:19:17,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47846 ImplicationChecksByTransitivity, 42.5s TimeCoverageRelationStatistics Valid=17043, Invalid=103019, Unknown=0, NotChecked=0, Total=120062 [2023-12-20 14:19:17,361 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 23554 mSDsluCounter, 38931 mSDsCounter, 0 mSdLazyCounter, 6461 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23554 SdHoareTripleChecker+Valid, 40526 SdHoareTripleChecker+Invalid, 6723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 6461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-20 14:19:17,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23554 Valid, 40526 Invalid, 6723 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [262 Valid, 6461 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-20 14:19:17,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369721 states. [2023-12-20 14:19:40,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369721 to 275274. [2023-12-20 14:19:40,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275274 states, 275272 states have (on average 1.1982039582667325) internal successors, (329832), 275273 states have internal predecessors, (329832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:41,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275274 states to 275274 states and 329832 transitions. [2023-12-20 14:19:41,022 INFO L78 Accepts]: Start accepts. Automaton has 275274 states and 329832 transitions. Word has length 161 [2023-12-20 14:19:41,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:19:41,022 INFO L495 AbstractCegarLoop]: Abstraction has 275274 states and 329832 transitions. [2023-12-20 14:19:41,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 7.580645161290323) internal successors, (470), 62 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:19:41,022 INFO L276 IsEmpty]: Start isEmpty. Operand 275274 states and 329832 transitions. [2023-12-20 14:19:41,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-20 14:19:41,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:19:41,037 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 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] [2023-12-20 14:19:41,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 14:19:41,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:19:41,242 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:19:41,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:19:41,243 INFO L85 PathProgramCache]: Analyzing trace with hash -92855023, now seen corresponding path program 1 times [2023-12-20 14:19:41,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:19:41,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183353367] [2023-12-20 14:19:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:41,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:19:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:42,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:19:42,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183353367] [2023-12-20 14:19:42,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183353367] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:19:42,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595384461] [2023-12-20 14:19:42,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:19:42,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:19:42,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:19:42,265 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:19:42,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 14:19:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:19:42,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 14:19:42,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:19:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:43,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:19:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 41 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:19:46,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595384461] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:19:46,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:19:46,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 53 [2023-12-20 14:19:46,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015197874] [2023-12-20 14:19:46,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:19:46,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-20 14:19:46,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:19:46,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-20 14:19:46,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2023-12-20 14:19:46,474 INFO L87 Difference]: Start difference. First operand 275274 states and 329832 transitions. Second operand has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:20:24,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:20:24,672 INFO L93 Difference]: Finished difference Result 555451 states and 664583 transitions. [2023-12-20 14:20:24,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-12-20 14:20:24,673 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-12-20 14:20:24,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:20:25,464 INFO L225 Difference]: With dead ends: 555451 [2023-12-20 14:20:25,464 INFO L226 Difference]: Without dead ends: 477274 [2023-12-20 14:20:25,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3435 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2410, Invalid=11870, Unknown=0, NotChecked=0, Total=14280 [2023-12-20 14:20:25,550 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 26141 mSDsluCounter, 23570 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26141 SdHoareTripleChecker+Valid, 25127 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:20:25,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26141 Valid, 25127 Invalid, 2392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [142 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 14:20:25,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477274 states. [2023-12-20 14:20:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477274 to 343690. [2023-12-20 14:20:55,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343690 states, 343688 states have (on average 1.1942372151486231) internal successors, (410445), 343689 states have internal predecessors, (410445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:20:56,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343690 states to 343690 states and 410445 transitions. [2023-12-20 14:20:56,894 INFO L78 Accepts]: Start accepts. Automaton has 343690 states and 410445 transitions. Word has length 161 [2023-12-20 14:20:56,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:20:56,895 INFO L495 AbstractCegarLoop]: Abstraction has 343690 states and 410445 transitions. [2023-12-20 14:20:56,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 8.264150943396226) internal successors, (438), 53 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:20:56,895 INFO L276 IsEmpty]: Start isEmpty. Operand 343690 states and 410445 transitions. [2023-12-20 14:20:56,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-20 14:20:56,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:20:56,927 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 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] [2023-12-20 14:20:56,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 14:20:57,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:20:57,138 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:20:57,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:20:57,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1481785931, now seen corresponding path program 1 times [2023-12-20 14:20:57,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:20:57,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388468615] [2023-12-20 14:20:57,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:20:57,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:20:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:20:58,450 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:20:58,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:20:58,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388468615] [2023-12-20 14:20:58,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388468615] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:20:58,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117834126] [2023-12-20 14:20:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:20:58,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:20:58,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:20:58,452 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:20:58,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 14:20:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:20:58,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-20 14:20:58,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 14:21:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:21:00,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 14:21:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:21:05,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117834126] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 14:21:05,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 14:21:05,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 69 [2023-12-20 14:21:05,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120925772] [2023-12-20 14:21:05,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 14:21:05,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-20 14:21:05,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 14:21:05,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-20 14:21:05,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=4320, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 14:21:05,757 INFO L87 Difference]: Start difference. First operand 343690 states and 410445 transitions. Second operand has 69 states, 69 states have (on average 6.202898550724638) internal successors, (428), 69 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:25:55,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 14:25:55,263 INFO L93 Difference]: Finished difference Result 1188519 states and 1412950 transitions. [2023-12-20 14:25:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 490 states. [2023-12-20 14:25:55,263 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.202898550724638) internal successors, (428), 69 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-12-20 14:25:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 14:25:56,836 INFO L225 Difference]: With dead ends: 1188519 [2023-12-20 14:25:56,836 INFO L226 Difference]: Without dead ends: 1087663 [2023-12-20 14:25:57,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 550 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132046 ImplicationChecksByTransitivity, 172.1s TimeCoverageRelationStatistics Valid=33987, Invalid=270165, Unknown=0, NotChecked=0, Total=304152 [2023-12-20 14:25:57,205 INFO L413 NwaCegarLoop]: 1751 mSDtfsCounter, 34490 mSDsluCounter, 36366 mSDsCounter, 0 mSdLazyCounter, 11321 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34490 SdHoareTripleChecker+Valid, 38117 SdHoareTripleChecker+Invalid, 11902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 11321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-12-20 14:25:57,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34490 Valid, 38117 Invalid, 11902 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [581 Valid, 11321 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-12-20 14:25:57,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087663 states. [2023-12-20 14:26:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087663 to 459630. [2023-12-20 14:26:48,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459630 states, 459628 states have (on average 1.1930104345253119) internal successors, (548341), 459629 states have internal predecessors, (548341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:26:49,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459630 states to 459630 states and 548341 transitions. [2023-12-20 14:26:49,433 INFO L78 Accepts]: Start accepts. Automaton has 459630 states and 548341 transitions. Word has length 161 [2023-12-20 14:26:49,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 14:26:49,433 INFO L495 AbstractCegarLoop]: Abstraction has 459630 states and 548341 transitions. [2023-12-20 14:26:49,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 6.202898550724638) internal successors, (428), 69 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 14:26:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand 459630 states and 548341 transitions. [2023-12-20 14:26:49,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-20 14:26:49,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 14:26:49,449 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 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] [2023-12-20 14:26:49,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 14:26:49,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:26:49,654 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 14:26:49,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 14:26:49,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1152445329, now seen corresponding path program 1 times [2023-12-20 14:26:49,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 14:26:49,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839974142] [2023-12-20 14:26:49,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:26:49,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 14:26:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:26:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 59 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 14:26:50,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 14:26:50,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839974142] [2023-12-20 14:26:50,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839974142] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 14:26:50,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788676979] [2023-12-20 14:26:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 14:26:50,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:26:50,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 14:26:50,705 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 14:26:50,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 14:26:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 14:26:50,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 14:26:50,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-20 14:26:51,329 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 14:26:51,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-20 14:26:51,359 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 14:26:51,373 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 [2023-12-20 14:26:51,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 14:26:51,530 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 162 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 26 known predicates. [2023-12-20 14:26:51,532 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 14:26:51,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 14:26:51,536 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 14:26:51,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 02:26:51 BoogieIcfgContainer [2023-12-20 14:26:51,537 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 14:26:51,537 INFO L158 Benchmark]: Toolchain (without parser) took 804722.97ms. Allocated memory was 261.1MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 199.4MB in the beginning and 1.1GB in the end (delta: -912.9MB). Peak memory consumption was 5.4GB. Max. memory is 8.0GB. [2023-12-20 14:26:51,537 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 187.7MB. Free memory is still 135.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 14:26:51,537 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1242.41ms. Allocated memory is still 261.1MB. Free memory was 198.9MB in the beginning and 117.6MB in the end (delta: 81.3MB). Peak memory consumption was 89.6MB. Max. memory is 8.0GB. [2023-12-20 14:26:51,537 INFO L158 Benchmark]: Boogie Procedure Inliner took 247.99ms. Allocated memory is still 261.1MB. Free memory was 117.6MB in the beginning and 141.9MB in the end (delta: -24.3MB). Peak memory consumption was 26.7MB. Max. memory is 8.0GB. [2023-12-20 14:26:51,538 INFO L158 Benchmark]: Boogie Preprocessor took 454.97ms. Allocated memory was 261.1MB in the beginning and 421.5MB in the end (delta: 160.4MB). Free memory was 141.9MB in the beginning and 269.8MB in the end (delta: -127.9MB). Peak memory consumption was 94.4MB. Max. memory is 8.0GB. [2023-12-20 14:26:51,538 INFO L158 Benchmark]: RCFGBuilder took 3405.45ms. Allocated memory was 421.5MB in the beginning and 843.1MB in the end (delta: 421.5MB). Free memory was 269.8MB in the beginning and 644.7MB in the end (delta: -374.9MB). Peak memory consumption was 266.3MB. Max. memory is 8.0GB. [2023-12-20 14:26:51,538 INFO L158 Benchmark]: TraceAbstraction took 799366.96ms. Allocated memory was 843.1MB in the beginning and 6.5GB in the end (delta: 5.7GB). Free memory was 643.6MB in the beginning and 1.1GB in the end (delta: -468.7MB). Peak memory consumption was 5.2GB. Max. memory is 8.0GB. [2023-12-20 14:26:51,538 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 187.7MB. Free memory is still 135.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1242.41ms. Allocated memory is still 261.1MB. Free memory was 198.9MB in the beginning and 117.6MB in the end (delta: 81.3MB). Peak memory consumption was 89.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 247.99ms. Allocated memory is still 261.1MB. Free memory was 117.6MB in the beginning and 141.9MB in the end (delta: -24.3MB). Peak memory consumption was 26.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 454.97ms. Allocated memory was 261.1MB in the beginning and 421.5MB in the end (delta: 160.4MB). Free memory was 141.9MB in the beginning and 269.8MB in the end (delta: -127.9MB). Peak memory consumption was 94.4MB. Max. memory is 8.0GB. * RCFGBuilder took 3405.45ms. Allocated memory was 421.5MB in the beginning and 843.1MB in the end (delta: 421.5MB). Free memory was 269.8MB in the beginning and 644.7MB in the end (delta: -374.9MB). Peak memory consumption was 266.3MB. Max. memory is 8.0GB. * TraceAbstraction took 799366.96ms. Allocated memory was 843.1MB in the beginning and 6.5GB in the end (delta: 5.7GB). Free memory was 643.6MB in the beginning and 1.1GB in the end (delta: -468.7MB). Peak memory consumption was 5.2GB. 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: 512]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 512). Cancelled while NwaCegarLoop was analyzing trace of length 162 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 26 known predicates. - TimeoutResultAtElement [Line: 728]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 728). Cancelled while NwaCegarLoop was analyzing trace of length 162 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 26 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 849 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 799.3s, OverallIterations: 43, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 570.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 399783 SdHoareTripleChecker+Valid, 45.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 399783 mSDsluCounter, 387501 SdHoareTripleChecker+Invalid, 39.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 322498 mSDsCounter, 3747 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65580 IncrementalHoareTripleChecker+Invalid, 69327 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3747 mSolverCounterUnsat, 65003 mSDtfsCounter, 65580 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6151 GetRequests, 3724 SyntacticMatches, 3 SemanticMatches, 2424 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270915 ImplicationChecksByTransitivity, 301.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=459630occurred in iteration=42, InterpolantAutomatonStates: 1921, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 166.1s AutomataMinimizationTime, 42 MinimizatonAttempts, 1416902 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 53.6s InterpolantComputationTime, 5991 NumberOfCodeBlocks, 5991 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 7933 ConstructedInterpolants, 0 QuantifiedInterpolants, 137511 SizeOfPredicates, 122 NumberOfNonLiveVariables, 9296 ConjunctsInSsa, 362 ConjunctsInUnsatCore, 74 InterpolantComputations, 26 PerfectInterpolantSequences, 1224/3339 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