/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:15:04,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:15:04,151 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:15:04,154 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:15:04,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:15:04,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:15:04,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:15:04,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:15:04,177 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:15:04,180 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:15:04,181 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:15:04,181 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:15:04,182 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:15:04,183 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:15:04,183 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:15:04,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:15:04,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:15:04,183 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:15:04,183 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:15:04,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:15:04,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:15:04,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:15:04,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:15:04,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:15:04,185 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:15:04,185 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:15:04,186 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:15:04,186 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:15:04,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:15:04,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:15:04,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:15:04,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:15:04,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:15:04,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:15:04,188 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:15:04,188 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:15:04,188 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:15:04,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:15:04,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:15:04,188 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:15:04,188 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:15:04,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:15:04,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:15:04,189 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:15:04,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:15:04,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:15:04,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:15:04,397 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:15:04,397 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:15:04,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-21 13:15:05,417 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:15:05,608 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:15:05,609 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-21 13:15:05,619 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a4084b7/c39f2ee21332448497e56ac1410e7ddd/FLAG405cdc669 [2023-12-21 13:15:05,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a4084b7/c39f2ee21332448497e56ac1410e7ddd [2023-12-21 13:15:05,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:15:05,634 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:15:05,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:15:05,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:15:05,640 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:15:05,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:05,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56205a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05, skipping insertion in model container [2023-12-21 13:15:05,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:05,683 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:15:05,835 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2023-12-21 13:15:05,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:15:05,870 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:15:05,914 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2023-12-21 13:15:05,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:15:05,944 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:15:05,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05 WrapperNode [2023-12-21 13:15:05,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:15:05,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:15:05,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:15:05,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:15:05,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:05,959 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:06,001 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 620 [2023-12-21 13:15:06,001 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:15:06,002 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:15:06,002 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:15:06,002 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:15:06,010 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:06,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:06,015 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:06,061 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 13:15:06,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:06,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:06,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:06,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:06,082 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:06,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:06,087 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:15:06,087 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:15:06,087 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:15:06,087 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:15:06,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05" (1/1) ... [2023-12-21 13:15:06,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:15:06,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:15:06,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 13:15:06,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 13:15:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:15:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:15:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:15:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:15:06,252 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:15:06,253 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:15:06,666 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:15:06,699 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:15:06,699 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:15:06,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:15:06 BoogieIcfgContainer [2023-12-21 13:15:06,699 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:15:06,701 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:15:06,701 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:15:06,703 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:15:06,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:15:05" (1/3) ... [2023-12-21 13:15:06,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341c777b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:15:06, skipping insertion in model container [2023-12-21 13:15:06,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:15:05" (2/3) ... [2023-12-21 13:15:06,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341c777b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:15:06, skipping insertion in model container [2023-12-21 13:15:06,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:15:06" (3/3) ... [2023-12-21 13:15:06,705 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-21 13:15:06,718 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:15:06,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:15:06,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:15:06,769 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;@17e0c9d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:15:06,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:15:06,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 144 states have (on average 1.7222222222222223) internal successors, (248), 145 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 13:15:06,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:06,782 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] [2023-12-21 13:15:06,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:06,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash -2137358278, now seen corresponding path program 1 times [2023-12-21 13:15:06,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:06,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862522576] [2023-12-21 13:15:06,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:06,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:07,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:07,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862522576] [2023-12-21 13:15:07,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862522576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:07,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:07,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:15:07,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617926685] [2023-12-21 13:15:07,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:07,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:15:07,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:07,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:15:07,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:15:07,140 INFO L87 Difference]: Start difference. First operand has 146 states, 144 states have (on average 1.7222222222222223) internal successors, (248), 145 states have internal predecessors, (248), 0 states have call successors, (0), 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 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:07,313 INFO L93 Difference]: Finished difference Result 462 states and 751 transitions. [2023-12-21 13:15:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:15:07,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-12-21 13:15:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:07,329 INFO L225 Difference]: With dead ends: 462 [2023-12-21 13:15:07,329 INFO L226 Difference]: Without dead ends: 393 [2023-12-21 13:15:07,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:15:07,334 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 826 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:07,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 845 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:15:07,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-12-21 13:15:07,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 231. [2023-12-21 13:15:07,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.491304347826087) internal successors, (343), 230 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 343 transitions. [2023-12-21 13:15:07,385 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 343 transitions. Word has length 48 [2023-12-21 13:15:07,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:07,385 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 343 transitions. [2023-12-21 13:15:07,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:07,386 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 343 transitions. [2023-12-21 13:15:07,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:15:07,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:07,388 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] [2023-12-21 13:15:07,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:15:07,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:07,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1438921462, now seen corresponding path program 1 times [2023-12-21 13:15:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965991094] [2023-12-21 13:15:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:07,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:07,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:07,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965991094] [2023-12-21 13:15:07,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965991094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:07,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:07,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:15:07,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978218280] [2023-12-21 13:15:07,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:07,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:15:07,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:07,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:15:07,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:07,481 INFO L87 Difference]: Start difference. First operand 231 states and 343 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:07,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:07,503 INFO L93 Difference]: Finished difference Result 569 states and 863 transitions. [2023-12-21 13:15:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:15:07,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-21 13:15:07,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:07,506 INFO L225 Difference]: With dead ends: 569 [2023-12-21 13:15:07,506 INFO L226 Difference]: Without dead ends: 401 [2023-12-21 13:15:07,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:07,508 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 141 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:07,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 388 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:07,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2023-12-21 13:15:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 399. [2023-12-21 13:15:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.4924623115577889) internal successors, (594), 398 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:07,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 594 transitions. [2023-12-21 13:15:07,519 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 594 transitions. Word has length 51 [2023-12-21 13:15:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:07,520 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 594 transitions. [2023-12-21 13:15:07,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:07,520 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 594 transitions. [2023-12-21 13:15:07,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:15:07,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:07,526 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] [2023-12-21 13:15:07,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:15:07,527 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:07,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:07,529 INFO L85 PathProgramCache]: Analyzing trace with hash 166941323, now seen corresponding path program 1 times [2023-12-21 13:15:07,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:07,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928982322] [2023-12-21 13:15:07,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:07,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:07,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:07,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928982322] [2023-12-21 13:15:07,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928982322] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:07,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:07,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:15:07,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000348866] [2023-12-21 13:15:07,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:07,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:15:07,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:07,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:15:07,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:07,612 INFO L87 Difference]: Start difference. First operand 399 states and 594 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:07,631 INFO L93 Difference]: Finished difference Result 979 states and 1474 transitions. [2023-12-21 13:15:07,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:15:07,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-21 13:15:07,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:07,634 INFO L225 Difference]: With dead ends: 979 [2023-12-21 13:15:07,634 INFO L226 Difference]: Without dead ends: 691 [2023-12-21 13:15:07,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:07,636 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 128 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:07,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 388 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:07,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-12-21 13:15:07,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 689. [2023-12-21 13:15:07,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.4796511627906976) internal successors, (1018), 688 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1018 transitions. [2023-12-21 13:15:07,684 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1018 transitions. Word has length 51 [2023-12-21 13:15:07,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:07,685 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1018 transitions. [2023-12-21 13:15:07,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:07,685 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1018 transitions. [2023-12-21 13:15:07,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:15:07,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:07,686 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] [2023-12-21 13:15:07,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:15:07,687 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:07,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:07,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1236415573, now seen corresponding path program 1 times [2023-12-21 13:15:07,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:07,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207516845] [2023-12-21 13:15:07,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:07,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:07,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:07,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207516845] [2023-12-21 13:15:07,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207516845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:07,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:07,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:15:07,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866546807] [2023-12-21 13:15:07,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:07,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:15:07,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:07,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:15:07,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:07,751 INFO L87 Difference]: Start difference. First operand 689 states and 1018 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:07,781 INFO L93 Difference]: Finished difference Result 1812 states and 2683 transitions. [2023-12-21 13:15:07,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:15:07,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-21 13:15:07,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:07,785 INFO L225 Difference]: With dead ends: 1812 [2023-12-21 13:15:07,785 INFO L226 Difference]: Without dead ends: 1210 [2023-12-21 13:15:07,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:07,793 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 137 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:07,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 396 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:07,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2023-12-21 13:15:07,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1208. [2023-12-21 13:15:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1207 states have (on average 1.4407622203811101) internal successors, (1739), 1207 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1739 transitions. [2023-12-21 13:15:07,813 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1739 transitions. Word has length 51 [2023-12-21 13:15:07,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:07,813 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 1739 transitions. [2023-12-21 13:15:07,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:07,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1739 transitions. [2023-12-21 13:15:07,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:15:07,816 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:07,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:15:07,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:15:07,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:07,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:07,817 INFO L85 PathProgramCache]: Analyzing trace with hash 499220147, now seen corresponding path program 1 times [2023-12-21 13:15:07,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:07,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773701376] [2023-12-21 13:15:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:07,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:07,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:07,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773701376] [2023-12-21 13:15:07,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773701376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:07,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:07,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:15:07,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012686952] [2023-12-21 13:15:07,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:07,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:15:07,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:07,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:15:07,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:15:07,936 INFO L87 Difference]: Start difference. First operand 1208 states and 1739 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:08,002 INFO L93 Difference]: Finished difference Result 2351 states and 3450 transitions. [2023-12-21 13:15:08,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:15:08,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 13:15:08,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:08,011 INFO L225 Difference]: With dead ends: 2351 [2023-12-21 13:15:08,011 INFO L226 Difference]: Without dead ends: 2005 [2023-12-21 13:15:08,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:15:08,013 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 558 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:08,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 837 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:08,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2023-12-21 13:15:08,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1613. [2023-12-21 13:15:08,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 1.4478908188585609) internal successors, (2334), 1612 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2334 transitions. [2023-12-21 13:15:08,044 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2334 transitions. Word has length 52 [2023-12-21 13:15:08,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:08,045 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2334 transitions. [2023-12-21 13:15:08,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:08,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2334 transitions. [2023-12-21 13:15:08,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:15:08,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:08,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:15:08,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:15:08,046 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:08,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:08,047 INFO L85 PathProgramCache]: Analyzing trace with hash -175385467, now seen corresponding path program 1 times [2023-12-21 13:15:08,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:08,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4996685] [2023-12-21 13:15:08,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:08,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:08,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:08,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4996685] [2023-12-21 13:15:08,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4996685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:08,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:08,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:15:08,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404140300] [2023-12-21 13:15:08,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:08,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:15:08,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:08,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:15:08,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:15:08,166 INFO L87 Difference]: Start difference. First operand 1613 states and 2334 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:08,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:08,238 INFO L93 Difference]: Finished difference Result 2725 states and 4000 transitions. [2023-12-21 13:15:08,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:15:08,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-21 13:15:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:08,245 INFO L225 Difference]: With dead ends: 2725 [2023-12-21 13:15:08,246 INFO L226 Difference]: Without dead ends: 2379 [2023-12-21 13:15:08,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:15:08,248 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 560 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:08,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 913 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2023-12-21 13:15:08,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 1924. [2023-12-21 13:15:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 1.452938117524701) internal successors, (2794), 1923 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:08,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2794 transitions. [2023-12-21 13:15:08,306 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2794 transitions. Word has length 52 [2023-12-21 13:15:08,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:08,307 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 2794 transitions. [2023-12-21 13:15:08,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2794 transitions. [2023-12-21 13:15:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:15:08,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:08,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:15:08,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:15:08,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:08,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:08,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1849713451, now seen corresponding path program 1 times [2023-12-21 13:15:08,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:08,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548479179] [2023-12-21 13:15:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:08,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:08,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:08,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:08,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548479179] [2023-12-21 13:15:08,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548479179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:08,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:08,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:15:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948314291] [2023-12-21 13:15:08,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:08,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:15:08,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:08,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:15:08,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:15:08,391 INFO L87 Difference]: Start difference. First operand 1924 states and 2794 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:08,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:08,459 INFO L93 Difference]: Finished difference Result 3142 states and 4613 transitions. [2023-12-21 13:15:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:15:08,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-21 13:15:08,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:08,466 INFO L225 Difference]: With dead ends: 3142 [2023-12-21 13:15:08,466 INFO L226 Difference]: Without dead ends: 2796 [2023-12-21 13:15:08,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:15:08,468 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 564 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:08,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 987 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2023-12-21 13:15:08,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2222. [2023-12-21 13:15:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2221 states have (on average 1.4574515983791085) internal successors, (3237), 2221 states have internal predecessors, (3237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 3237 transitions. [2023-12-21 13:15:08,502 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 3237 transitions. Word has length 53 [2023-12-21 13:15:08,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:08,502 INFO L495 AbstractCegarLoop]: Abstraction has 2222 states and 3237 transitions. [2023-12-21 13:15:08,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:08,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 3237 transitions. [2023-12-21 13:15:08,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 13:15:08,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:08,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:15:08,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:15:08,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:08,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:08,504 INFO L85 PathProgramCache]: Analyzing trace with hash 212683946, now seen corresponding path program 1 times [2023-12-21 13:15:08,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:08,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698375401] [2023-12-21 13:15:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:08,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:08,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:08,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698375401] [2023-12-21 13:15:08,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698375401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:08,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:08,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:15:08,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089349281] [2023-12-21 13:15:08,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:08,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:15:08,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:08,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:15:08,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:15:08,582 INFO L87 Difference]: Start difference. First operand 2222 states and 3237 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:08,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:08,712 INFO L93 Difference]: Finished difference Result 5209 states and 7588 transitions. [2023-12-21 13:15:08,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:15:08,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-21 13:15:08,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:08,719 INFO L225 Difference]: With dead ends: 5209 [2023-12-21 13:15:08,719 INFO L226 Difference]: Without dead ends: 3064 [2023-12-21 13:15:08,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:15:08,722 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 766 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:08,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 207 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:15:08,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2023-12-21 13:15:08,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 3046. [2023-12-21 13:15:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3045 states have (on average 1.4430213464696224) internal successors, (4394), 3045 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:08,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4394 transitions. [2023-12-21 13:15:08,763 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4394 transitions. Word has length 56 [2023-12-21 13:15:08,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:08,763 INFO L495 AbstractCegarLoop]: Abstraction has 3046 states and 4394 transitions. [2023-12-21 13:15:08,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:08,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4394 transitions. [2023-12-21 13:15:08,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 13:15:08,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:08,764 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] [2023-12-21 13:15:08,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:15:08,764 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:08,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:08,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2021478950, now seen corresponding path program 1 times [2023-12-21 13:15:08,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:08,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797261550] [2023-12-21 13:15:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:08,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:08,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:08,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:08,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797261550] [2023-12-21 13:15:08,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797261550] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:08,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:08,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:15:08,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433121300] [2023-12-21 13:15:08,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:08,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:15:08,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:08,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:15:08,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:15:08,834 INFO L87 Difference]: Start difference. First operand 3046 states and 4394 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:08,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:08,985 INFO L93 Difference]: Finished difference Result 7123 states and 10249 transitions. [2023-12-21 13:15:08,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:15:08,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-12-21 13:15:08,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:08,994 INFO L225 Difference]: With dead ends: 7123 [2023-12-21 13:15:08,995 INFO L226 Difference]: Without dead ends: 4163 [2023-12-21 13:15:08,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:15:09,000 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 798 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:09,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 195 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:15:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4163 states. [2023-12-21 13:15:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4163 to 3046. [2023-12-21 13:15:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3045 states have (on average 1.4266009852216748) internal successors, (4344), 3045 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4344 transitions. [2023-12-21 13:15:09,046 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4344 transitions. Word has length 57 [2023-12-21 13:15:09,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:09,046 INFO L495 AbstractCegarLoop]: Abstraction has 3046 states and 4344 transitions. [2023-12-21 13:15:09,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:09,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4344 transitions. [2023-12-21 13:15:09,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 13:15:09,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:09,048 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] [2023-12-21 13:15:09,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:15:09,048 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:09,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:09,048 INFO L85 PathProgramCache]: Analyzing trace with hash 51729734, now seen corresponding path program 1 times [2023-12-21 13:15:09,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:09,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693090535] [2023-12-21 13:15:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:09,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:09,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:09,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:09,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693090535] [2023-12-21 13:15:09,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693090535] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:09,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:09,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:15:09,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585206588] [2023-12-21 13:15:09,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:09,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:15:09,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:09,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:15:09,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:15:09,101 INFO L87 Difference]: Start difference. First operand 3046 states and 4344 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:09,237 INFO L93 Difference]: Finished difference Result 7264 states and 10351 transitions. [2023-12-21 13:15:09,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:15:09,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-12-21 13:15:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:09,248 INFO L225 Difference]: With dead ends: 7264 [2023-12-21 13:15:09,248 INFO L226 Difference]: Without dead ends: 4259 [2023-12-21 13:15:09,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:15:09,252 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 775 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:09,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 205 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:15:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4259 states. [2023-12-21 13:15:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4259 to 4234. [2023-12-21 13:15:09,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4234 states, 4233 states have (on average 1.4122371840302386) internal successors, (5978), 4233 states have internal predecessors, (5978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4234 states to 4234 states and 5978 transitions. [2023-12-21 13:15:09,309 INFO L78 Accepts]: Start accepts. Automaton has 4234 states and 5978 transitions. Word has length 57 [2023-12-21 13:15:09,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:09,309 INFO L495 AbstractCegarLoop]: Abstraction has 4234 states and 5978 transitions. [2023-12-21 13:15:09,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:09,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4234 states and 5978 transitions. [2023-12-21 13:15:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-21 13:15:09,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:09,310 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] [2023-12-21 13:15:09,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:15:09,311 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:09,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1707454973, now seen corresponding path program 1 times [2023-12-21 13:15:09,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:09,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204306545] [2023-12-21 13:15:09,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:09,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:09,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:09,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204306545] [2023-12-21 13:15:09,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204306545] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:09,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:09,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:15:09,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103918830] [2023-12-21 13:15:09,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:09,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:15:09,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:09,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:15:09,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:15:09,434 INFO L87 Difference]: Start difference. First operand 4234 states and 5978 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:09,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:09,774 INFO L93 Difference]: Finished difference Result 18149 states and 25628 transitions. [2023-12-21 13:15:09,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:15:09,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2023-12-21 13:15:09,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:09,828 INFO L225 Difference]: With dead ends: 18149 [2023-12-21 13:15:09,828 INFO L226 Difference]: Without dead ends: 16779 [2023-12-21 13:15:09,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:15:09,837 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 2545 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:09,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2545 Valid, 386 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:15:09,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16779 states. [2023-12-21 13:15:09,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16779 to 4246. [2023-12-21 13:15:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4246 states, 4245 states have (on average 1.4120141342756183) internal successors, (5994), 4245 states have internal predecessors, (5994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 5994 transitions. [2023-12-21 13:15:09,940 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 5994 transitions. Word has length 58 [2023-12-21 13:15:09,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:09,941 INFO L495 AbstractCegarLoop]: Abstraction has 4246 states and 5994 transitions. [2023-12-21 13:15:09,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 5994 transitions. [2023-12-21 13:15:09,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 13:15:09,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:09,944 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] [2023-12-21 13:15:09,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:15:09,944 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:09,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:09,944 INFO L85 PathProgramCache]: Analyzing trace with hash 282023699, now seen corresponding path program 1 times [2023-12-21 13:15:09,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:09,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495544167] [2023-12-21 13:15:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:09,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:10,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495544167] [2023-12-21 13:15:10,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495544167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:10,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:10,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:15:10,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992239753] [2023-12-21 13:15:10,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:10,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:15:10,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:10,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:15:10,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:15:10,052 INFO L87 Difference]: Start difference. First operand 4246 states and 5994 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:10,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:10,367 INFO L93 Difference]: Finished difference Result 16332 states and 22940 transitions. [2023-12-21 13:15:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:15:10,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-12-21 13:15:10,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:10,386 INFO L225 Difference]: With dead ends: 16332 [2023-12-21 13:15:10,386 INFO L226 Difference]: Without dead ends: 14102 [2023-12-21 13:15:10,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:15:10,393 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 1888 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:10,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 326 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:15:10,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14102 states. [2023-12-21 13:15:10,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14102 to 4266. [2023-12-21 13:15:10,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4266 states, 4265 states have (on average 1.4110199296600234) internal successors, (6018), 4265 states have internal predecessors, (6018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4266 states to 4266 states and 6018 transitions. [2023-12-21 13:15:10,488 INFO L78 Accepts]: Start accepts. Automaton has 4266 states and 6018 transitions. Word has length 59 [2023-12-21 13:15:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:10,489 INFO L495 AbstractCegarLoop]: Abstraction has 4266 states and 6018 transitions. [2023-12-21 13:15:10,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:10,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4266 states and 6018 transitions. [2023-12-21 13:15:10,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 13:15:10,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:10,490 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] [2023-12-21 13:15:10,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:15:10,490 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:10,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:10,491 INFO L85 PathProgramCache]: Analyzing trace with hash -427317132, now seen corresponding path program 1 times [2023-12-21 13:15:10,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:10,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382604666] [2023-12-21 13:15:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:10,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:10,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:10,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382604666] [2023-12-21 13:15:10,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382604666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:10,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:10,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:15:10,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057340711] [2023-12-21 13:15:10,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:10,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:15:10,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:15:10,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:15:10,588 INFO L87 Difference]: Start difference. First operand 4266 states and 6018 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:10,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:10,961 INFO L93 Difference]: Finished difference Result 19140 states and 27002 transitions. [2023-12-21 13:15:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:15:10,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-12-21 13:15:10,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:10,983 INFO L225 Difference]: With dead ends: 19140 [2023-12-21 13:15:10,983 INFO L226 Difference]: Without dead ends: 17094 [2023-12-21 13:15:10,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:15:10,988 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 2129 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2129 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:10,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2129 Valid, 365 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:15:11,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17094 states. [2023-12-21 13:15:11,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17094 to 4344. [2023-12-21 13:15:11,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4343 states have (on average 1.4087036610637809) internal successors, (6118), 4343 states have internal predecessors, (6118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:11,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6118 transitions. [2023-12-21 13:15:11,106 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6118 transitions. Word has length 59 [2023-12-21 13:15:11,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:11,106 INFO L495 AbstractCegarLoop]: Abstraction has 4344 states and 6118 transitions. [2023-12-21 13:15:11,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6118 transitions. [2023-12-21 13:15:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 13:15:11,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:11,109 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] [2023-12-21 13:15:11,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:15:11,109 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:11,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:11,109 INFO L85 PathProgramCache]: Analyzing trace with hash -759996951, now seen corresponding path program 1 times [2023-12-21 13:15:11,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:11,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552946384] [2023-12-21 13:15:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:11,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:11,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:11,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552946384] [2023-12-21 13:15:11,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552946384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:11,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:11,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:15:11,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194609062] [2023-12-21 13:15:11,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:11,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:15:11,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:11,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:15:11,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:15:11,341 INFO L87 Difference]: Start difference. First operand 4344 states and 6118 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:12,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:12,036 INFO L93 Difference]: Finished difference Result 16691 states and 23468 transitions. [2023-12-21 13:15:12,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 13:15:12,037 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-21 13:15:12,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:12,062 INFO L225 Difference]: With dead ends: 16691 [2023-12-21 13:15:12,063 INFO L226 Difference]: Without dead ends: 13102 [2023-12-21 13:15:12,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:15:12,086 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1292 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:12,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 1433 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:15:12,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13102 states. [2023-12-21 13:15:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13102 to 4344. [2023-12-21 13:15:12,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4343 states have (on average 1.4073221275615935) internal successors, (6112), 4343 states have internal predecessors, (6112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:12,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6112 transitions. [2023-12-21 13:15:12,184 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6112 transitions. Word has length 61 [2023-12-21 13:15:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:12,184 INFO L495 AbstractCegarLoop]: Abstraction has 4344 states and 6112 transitions. [2023-12-21 13:15:12,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6112 transitions. [2023-12-21 13:15:12,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 13:15:12,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:12,186 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] [2023-12-21 13:15:12,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:15:12,186 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:12,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:12,186 INFO L85 PathProgramCache]: Analyzing trace with hash 352995879, now seen corresponding path program 1 times [2023-12-21 13:15:12,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:12,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549887108] [2023-12-21 13:15:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:12,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:12,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:12,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549887108] [2023-12-21 13:15:12,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549887108] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:12,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:12,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:15:12,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056291574] [2023-12-21 13:15:12,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:12,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:15:12,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:12,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:15:12,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:15:12,358 INFO L87 Difference]: Start difference. First operand 4344 states and 6112 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:12,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:12,859 INFO L93 Difference]: Finished difference Result 14362 states and 20242 transitions. [2023-12-21 13:15:12,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:15:12,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-21 13:15:12,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:12,873 INFO L225 Difference]: With dead ends: 14362 [2023-12-21 13:15:12,873 INFO L226 Difference]: Without dead ends: 10912 [2023-12-21 13:15:12,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:15:12,880 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 1277 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:12,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 1076 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:15:12,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10912 states. [2023-12-21 13:15:12,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10912 to 4260. [2023-12-21 13:15:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 4259 states have (on average 1.4047898567738906) internal successors, (5983), 4259 states have internal predecessors, (5983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 5983 transitions. [2023-12-21 13:15:12,955 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 5983 transitions. Word has length 61 [2023-12-21 13:15:12,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:12,955 INFO L495 AbstractCegarLoop]: Abstraction has 4260 states and 5983 transitions. [2023-12-21 13:15:12,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:12,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 5983 transitions. [2023-12-21 13:15:12,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 13:15:12,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:12,957 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] [2023-12-21 13:15:12,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:15:12,957 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:12,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:12,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1958858664, now seen corresponding path program 1 times [2023-12-21 13:15:12,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:12,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201747324] [2023-12-21 13:15:12,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:12,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:13,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:13,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201747324] [2023-12-21 13:15:13,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201747324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:13,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:13,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:15:13,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990650472] [2023-12-21 13:15:13,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:13,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:15:13,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:15:13,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:15:13,175 INFO L87 Difference]: Start difference. First operand 4260 states and 5983 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:13,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:13,921 INFO L93 Difference]: Finished difference Result 14902 states and 20962 transitions. [2023-12-21 13:15:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 13:15:13,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-21 13:15:13,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:13,933 INFO L225 Difference]: With dead ends: 14902 [2023-12-21 13:15:13,933 INFO L226 Difference]: Without dead ends: 11323 [2023-12-21 13:15:13,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:15:13,938 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 1495 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:13,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1180 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:15:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11323 states. [2023-12-21 13:15:13,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11323 to 4081. [2023-12-21 13:15:14,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4081 states, 4080 states have (on average 1.402205882352941) internal successors, (5721), 4080 states have internal predecessors, (5721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4081 states to 4081 states and 5721 transitions. [2023-12-21 13:15:14,005 INFO L78 Accepts]: Start accepts. Automaton has 4081 states and 5721 transitions. Word has length 61 [2023-12-21 13:15:14,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:14,005 INFO L495 AbstractCegarLoop]: Abstraction has 4081 states and 5721 transitions. [2023-12-21 13:15:14,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:14,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4081 states and 5721 transitions. [2023-12-21 13:15:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:15:14,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:14,007 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] [2023-12-21 13:15:14,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:15:14,007 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:14,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:14,007 INFO L85 PathProgramCache]: Analyzing trace with hash 53904949, now seen corresponding path program 1 times [2023-12-21 13:15:14,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:14,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628276350] [2023-12-21 13:15:14,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:14,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:14,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:14,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628276350] [2023-12-21 13:15:14,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628276350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:14,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:14,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:15:14,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995641391] [2023-12-21 13:15:14,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:14,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:15:14,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:14,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:15:14,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:14,036 INFO L87 Difference]: Start difference. First operand 4081 states and 5721 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2023-12-21 13:15:14,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:14,059 INFO L93 Difference]: Finished difference Result 6090 states and 8562 transitions. [2023-12-21 13:15:14,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:15:14,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 [2023-12-21 13:15:14,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:14,084 INFO L225 Difference]: With dead ends: 6090 [2023-12-21 13:15:14,085 INFO L226 Difference]: Without dead ends: 3974 [2023-12-21 13:15:14,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:14,086 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 130 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:14,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 471 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:14,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3974 states. [2023-12-21 13:15:14,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3974 to 3972. [2023-12-21 13:15:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3971 states have (on average 1.3863006799294888) internal successors, (5505), 3971 states have internal predecessors, (5505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:14,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 5505 transitions. [2023-12-21 13:15:14,117 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 5505 transitions. Word has length 62 [2023-12-21 13:15:14,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:14,117 INFO L495 AbstractCegarLoop]: Abstraction has 3972 states and 5505 transitions. [2023-12-21 13:15:14,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2023-12-21 13:15:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 5505 transitions. [2023-12-21 13:15:14,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:15:14,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:14,119 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] [2023-12-21 13:15:14,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:15:14,119 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:14,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1841231568, now seen corresponding path program 1 times [2023-12-21 13:15:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229968352] [2023-12-21 13:15:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:14,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:14,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:14,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229968352] [2023-12-21 13:15:14,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229968352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:14,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:14,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:15:14,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608622895] [2023-12-21 13:15:14,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:14,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:15:14,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:14,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:15:14,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:14,147 INFO L87 Difference]: Start difference. First operand 3972 states and 5505 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2023-12-21 13:15:14,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:14,166 INFO L93 Difference]: Finished difference Result 5477 states and 7587 transitions. [2023-12-21 13:15:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:15:14,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 [2023-12-21 13:15:14,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:14,170 INFO L225 Difference]: With dead ends: 5477 [2023-12-21 13:15:14,170 INFO L226 Difference]: Without dead ends: 3379 [2023-12-21 13:15:14,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:14,172 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 118 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:14,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 460 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:14,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2023-12-21 13:15:14,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 3377. [2023-12-21 13:15:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3376 states have (on average 1.3593009478672986) internal successors, (4589), 3376 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:14,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4589 transitions. [2023-12-21 13:15:14,200 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4589 transitions. Word has length 62 [2023-12-21 13:15:14,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:14,200 INFO L495 AbstractCegarLoop]: Abstraction has 3377 states and 4589 transitions. [2023-12-21 13:15:14,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2023-12-21 13:15:14,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4589 transitions. [2023-12-21 13:15:14,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:15:14,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:14,201 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] [2023-12-21 13:15:14,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:15:14,202 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:14,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:14,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1950608922, now seen corresponding path program 1 times [2023-12-21 13:15:14,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:14,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681627261] [2023-12-21 13:15:14,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:14,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:14,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:14,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681627261] [2023-12-21 13:15:14,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681627261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:14,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:14,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:15:14,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328796174] [2023-12-21 13:15:14,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:14,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:15:14,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:14,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:15:14,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:14,231 INFO L87 Difference]: Start difference. First operand 3377 states and 4589 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2023-12-21 13:15:14,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:14,252 INFO L93 Difference]: Finished difference Result 4126 states and 5581 transitions. [2023-12-21 13:15:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:15:14,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 [2023-12-21 13:15:14,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:14,255 INFO L225 Difference]: With dead ends: 4126 [2023-12-21 13:15:14,255 INFO L226 Difference]: Without dead ends: 2782 [2023-12-21 13:15:14,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:14,256 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 148 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:14,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 475 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:14,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2023-12-21 13:15:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2780. [2023-12-21 13:15:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2779 states have (on average 1.327455919395466) internal successors, (3689), 2779 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:14,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 3689 transitions. [2023-12-21 13:15:14,277 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 3689 transitions. Word has length 62 [2023-12-21 13:15:14,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:14,277 INFO L495 AbstractCegarLoop]: Abstraction has 2780 states and 3689 transitions. [2023-12-21 13:15:14,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2023-12-21 13:15:14,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 3689 transitions. [2023-12-21 13:15:14,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:15:14,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:14,278 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] [2023-12-21 13:15:14,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:15:14,278 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:14,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:14,279 INFO L85 PathProgramCache]: Analyzing trace with hash 144325302, now seen corresponding path program 1 times [2023-12-21 13:15:14,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:14,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156059805] [2023-12-21 13:15:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:14,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:15,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:15,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:15,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156059805] [2023-12-21 13:15:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156059805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:15,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:15,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-21 13:15:15,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246262157] [2023-12-21 13:15:15,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:15,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 13:15:15,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:15,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 13:15:15,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2023-12-21 13:15:15,138 INFO L87 Difference]: Start difference. First operand 2780 states and 3689 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:18,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:18,429 INFO L93 Difference]: Finished difference Result 6321 states and 8468 transitions. [2023-12-21 13:15:18,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 13:15:18,431 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-21 13:15:18,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:18,437 INFO L225 Difference]: With dead ends: 6321 [2023-12-21 13:15:18,437 INFO L226 Difference]: Without dead ends: 6254 [2023-12-21 13:15:18,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=353, Invalid=1539, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 13:15:18,438 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 2140 mSDsluCounter, 7152 mSDsCounter, 0 mSdLazyCounter, 4043 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 7699 SdHoareTripleChecker+Invalid, 4044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:18,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2140 Valid, 7699 Invalid, 4044 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4043 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-21 13:15:18,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6254 states. [2023-12-21 13:15:18,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6254 to 2786. [2023-12-21 13:15:18,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2785 states have (on average 1.3271095152603232) internal successors, (3696), 2785 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:18,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3696 transitions. [2023-12-21 13:15:18,472 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3696 transitions. Word has length 63 [2023-12-21 13:15:18,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:18,472 INFO L495 AbstractCegarLoop]: Abstraction has 2786 states and 3696 transitions. [2023-12-21 13:15:18,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:18,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3696 transitions. [2023-12-21 13:15:18,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:15:18,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:18,473 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] [2023-12-21 13:15:18,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:15:18,474 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:18,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:18,475 INFO L85 PathProgramCache]: Analyzing trace with hash 818379770, now seen corresponding path program 1 times [2023-12-21 13:15:18,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:18,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009299055] [2023-12-21 13:15:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:18,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:18,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:18,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009299055] [2023-12-21 13:15:18,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009299055] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:18,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:18,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:15:18,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581059116] [2023-12-21 13:15:18,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:18,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:15:18,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:18,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:15:18,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:15:18,981 INFO L87 Difference]: Start difference. First operand 2786 states and 3696 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:19,981 INFO L93 Difference]: Finished difference Result 6909 states and 9282 transitions. [2023-12-21 13:15:19,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 13:15:19,981 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-21 13:15:19,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:19,992 INFO L225 Difference]: With dead ends: 6909 [2023-12-21 13:15:19,992 INFO L226 Difference]: Without dead ends: 6539 [2023-12-21 13:15:19,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:15:19,994 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1881 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 3247 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:19,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 3247 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:15:19,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2023-12-21 13:15:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 2712. [2023-12-21 13:15:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2712 states, 2711 states have (on average 1.3271855403909996) internal successors, (3598), 2711 states have internal predecessors, (3598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:20,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2712 states to 2712 states and 3598 transitions. [2023-12-21 13:15:20,037 INFO L78 Accepts]: Start accepts. Automaton has 2712 states and 3598 transitions. Word has length 63 [2023-12-21 13:15:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:20,037 INFO L495 AbstractCegarLoop]: Abstraction has 2712 states and 3598 transitions. [2023-12-21 13:15:20,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:20,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2712 states and 3598 transitions. [2023-12-21 13:15:20,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:15:20,040 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:20,040 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] [2023-12-21 13:15:20,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:15:20,040 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:20,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:20,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1346499327, now seen corresponding path program 1 times [2023-12-21 13:15:20,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:20,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247191253] [2023-12-21 13:15:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:20,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:20,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:20,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247191253] [2023-12-21 13:15:20,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247191253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:20,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:20,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:15:20,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521524398] [2023-12-21 13:15:20,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:20,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:15:20,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:20,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:15:20,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:20,070 INFO L87 Difference]: Start difference. First operand 2712 states and 3598 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:20,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:20,102 INFO L93 Difference]: Finished difference Result 4977 states and 6656 transitions. [2023-12-21 13:15:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:15:20,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-21 13:15:20,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:20,106 INFO L225 Difference]: With dead ends: 4977 [2023-12-21 13:15:20,106 INFO L226 Difference]: Without dead ends: 3573 [2023-12-21 13:15:20,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:20,109 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 155 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:20,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 308 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:20,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3573 states. [2023-12-21 13:15:20,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3573 to 2532. [2023-12-21 13:15:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 2531 states have (on average 1.3275385223231924) internal successors, (3360), 2531 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 3360 transitions. [2023-12-21 13:15:20,136 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 3360 transitions. Word has length 63 [2023-12-21 13:15:20,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:20,136 INFO L495 AbstractCegarLoop]: Abstraction has 2532 states and 3360 transitions. [2023-12-21 13:15:20,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 3360 transitions. [2023-12-21 13:15:20,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:15:20,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:20,138 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] [2023-12-21 13:15:20,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:15:20,138 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:20,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:20,138 INFO L85 PathProgramCache]: Analyzing trace with hash -699273156, now seen corresponding path program 1 times [2023-12-21 13:15:20,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:20,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343691824] [2023-12-21 13:15:20,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:20,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:20,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:20,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:20,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343691824] [2023-12-21 13:15:20,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343691824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:20,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:20,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-21 13:15:20,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620164678] [2023-12-21 13:15:20,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:20,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 13:15:20,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:20,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 13:15:20,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-12-21 13:15:20,861 INFO L87 Difference]: Start difference. First operand 2532 states and 3360 transitions. Second operand has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 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) [2023-12-21 13:15:24,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:24,330 INFO L93 Difference]: Finished difference Result 10441 states and 14120 transitions. [2023-12-21 13:15:24,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 13:15:24,332 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 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 [2023-12-21 13:15:24,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:24,340 INFO L225 Difference]: With dead ends: 10441 [2023-12-21 13:15:24,340 INFO L226 Difference]: Without dead ends: 10309 [2023-12-21 13:15:24,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=442, Invalid=2210, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 13:15:24,343 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 2403 mSDsluCounter, 8900 mSDsCounter, 0 mSdLazyCounter, 4291 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 9587 SdHoareTripleChecker+Invalid, 4295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 4291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:24,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2403 Valid, 9587 Invalid, 4295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 4291 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 13:15:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10309 states. [2023-12-21 13:15:24,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10309 to 2516. [2023-12-21 13:15:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2516 states, 2515 states have (on average 1.3268389662027833) internal successors, (3337), 2515 states have internal predecessors, (3337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2516 states to 2516 states and 3337 transitions. [2023-12-21 13:15:24,391 INFO L78 Accepts]: Start accepts. Automaton has 2516 states and 3337 transitions. Word has length 64 [2023-12-21 13:15:24,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:24,391 INFO L495 AbstractCegarLoop]: Abstraction has 2516 states and 3337 transitions. [2023-12-21 13:15:24,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3684210526315788) internal successors, (64), 18 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) [2023-12-21 13:15:24,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2516 states and 3337 transitions. [2023-12-21 13:15:24,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 13:15:24,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:24,393 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, 1] [2023-12-21 13:15:24,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:15:24,393 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:24,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:24,394 INFO L85 PathProgramCache]: Analyzing trace with hash -409578252, now seen corresponding path program 1 times [2023-12-21 13:15:24,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:24,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347657500] [2023-12-21 13:15:24,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:24,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:24,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:24,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347657500] [2023-12-21 13:15:24,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347657500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:24,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:24,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:15:24,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527794993] [2023-12-21 13:15:24,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:24,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:15:24,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:24,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:15:24,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:15:24,445 INFO L87 Difference]: Start difference. First operand 2516 states and 3337 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:24,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:24,481 INFO L93 Difference]: Finished difference Result 2522 states and 3340 transitions. [2023-12-21 13:15:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:15:24,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-21 13:15:24,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:24,482 INFO L225 Difference]: With dead ends: 2522 [2023-12-21 13:15:24,482 INFO L226 Difference]: Without dead ends: 2304 [2023-12-21 13:15:24,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:15:24,483 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 566 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:24,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 562 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:24,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2304 states. [2023-12-21 13:15:24,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2304 to 2300. [2023-12-21 13:15:24,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2299 states have (on average 1.3305785123966942) internal successors, (3059), 2299 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3059 transitions. [2023-12-21 13:15:24,498 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3059 transitions. Word has length 67 [2023-12-21 13:15:24,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:24,498 INFO L495 AbstractCegarLoop]: Abstraction has 2300 states and 3059 transitions. [2023-12-21 13:15:24,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:24,498 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3059 transitions. [2023-12-21 13:15:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 13:15:24,500 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:24,500 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, 1, 1, 1, 1] [2023-12-21 13:15:24,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 13:15:24,500 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:24,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:24,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1758026779, now seen corresponding path program 1 times [2023-12-21 13:15:24,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:24,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060072133] [2023-12-21 13:15:24,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:24,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:24,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:24,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060072133] [2023-12-21 13:15:24,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060072133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:24,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:24,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:15:24,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751535832] [2023-12-21 13:15:24,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:24,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:15:24,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:24,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:15:24,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:24,547 INFO L87 Difference]: Start difference. First operand 2300 states and 3059 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:24,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:24,563 INFO L93 Difference]: Finished difference Result 5659 states and 7641 transitions. [2023-12-21 13:15:24,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:15:24,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2023-12-21 13:15:24,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:24,565 INFO L225 Difference]: With dead ends: 5659 [2023-12-21 13:15:24,565 INFO L226 Difference]: Without dead ends: 3902 [2023-12-21 13:15:24,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:24,567 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 99 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:24,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 401 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:24,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2023-12-21 13:15:24,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3674. [2023-12-21 13:15:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 1.337326436155731) internal successors, (4912), 3673 states have internal predecessors, (4912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 4912 transitions. [2023-12-21 13:15:24,635 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 4912 transitions. Word has length 70 [2023-12-21 13:15:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:24,635 INFO L495 AbstractCegarLoop]: Abstraction has 3674 states and 4912 transitions. [2023-12-21 13:15:24,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:24,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 4912 transitions. [2023-12-21 13:15:24,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-21 13:15:24,637 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:24,637 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, 1, 1, 1, 1, 1] [2023-12-21 13:15:24,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 13:15:24,637 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:24,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:24,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1753886454, now seen corresponding path program 1 times [2023-12-21 13:15:24,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:24,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412785249] [2023-12-21 13:15:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:24,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:24,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:24,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:24,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412785249] [2023-12-21 13:15:24,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412785249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:24,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:24,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:15:24,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469429763] [2023-12-21 13:15:24,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:24,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:15:24,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:24,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:15:24,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:24,700 INFO L87 Difference]: Start difference. First operand 3674 states and 4912 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:24,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:24,721 INFO L93 Difference]: Finished difference Result 9626 states and 12962 transitions. [2023-12-21 13:15:24,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:15:24,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-21 13:15:24,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:24,726 INFO L225 Difference]: With dead ends: 9626 [2023-12-21 13:15:24,726 INFO L226 Difference]: Without dead ends: 6495 [2023-12-21 13:15:24,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:24,729 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 88 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:24,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 393 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:24,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6495 states. [2023-12-21 13:15:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6495 to 5961. [2023-12-21 13:15:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 5960 states have (on average 1.3325503355704698) internal successors, (7942), 5960 states have internal predecessors, (7942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:24,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 7942 transitions. [2023-12-21 13:15:24,775 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 7942 transitions. Word has length 71 [2023-12-21 13:15:24,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:24,775 INFO L495 AbstractCegarLoop]: Abstraction has 5961 states and 7942 transitions. [2023-12-21 13:15:24,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:24,775 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 7942 transitions. [2023-12-21 13:15:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-21 13:15:24,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:24,776 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:15:24,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 13:15:24,777 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:24,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1772874083, now seen corresponding path program 1 times [2023-12-21 13:15:24,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:24,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469051314] [2023-12-21 13:15:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:24,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:24,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:24,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469051314] [2023-12-21 13:15:24,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469051314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:24,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:24,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:15:24,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710644747] [2023-12-21 13:15:24,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:24,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:15:24,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:15:24,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:24,827 INFO L87 Difference]: Start difference. First operand 5961 states and 7942 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:24,861 INFO L93 Difference]: Finished difference Result 16089 states and 21424 transitions. [2023-12-21 13:15:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:15:24,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-21 13:15:24,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:24,870 INFO L225 Difference]: With dead ends: 16089 [2023-12-21 13:15:24,870 INFO L226 Difference]: Without dead ends: 10583 [2023-12-21 13:15:24,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:24,876 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 98 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 378 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 [2023-12-21 13:15:24,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 378 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:24,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10583 states. [2023-12-21 13:15:24,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10583 to 9789. [2023-12-21 13:15:24,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9789 states, 9788 states have (on average 1.3195749897834081) internal successors, (12916), 9788 states have internal predecessors, (12916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9789 states to 9789 states and 12916 transitions. [2023-12-21 13:15:24,955 INFO L78 Accepts]: Start accepts. Automaton has 9789 states and 12916 transitions. Word has length 73 [2023-12-21 13:15:24,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:24,956 INFO L495 AbstractCegarLoop]: Abstraction has 9789 states and 12916 transitions. [2023-12-21 13:15:24,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand 9789 states and 12916 transitions. [2023-12-21 13:15:24,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-21 13:15:24,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:24,957 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:15:24,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 13:15:24,957 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:24,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:24,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1540660584, now seen corresponding path program 1 times [2023-12-21 13:15:24,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:24,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364355966] [2023-12-21 13:15:24,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:24,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:25,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:25,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364355966] [2023-12-21 13:15:25,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364355966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:25,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:25,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:15:25,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022590048] [2023-12-21 13:15:25,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:25,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:15:25,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:25,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:15:25,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:15:25,080 INFO L87 Difference]: Start difference. First operand 9789 states and 12916 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:25,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:25,158 INFO L93 Difference]: Finished difference Result 20897 states and 27204 transitions. [2023-12-21 13:15:25,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:15:25,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-21 13:15:25,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:25,176 INFO L225 Difference]: With dead ends: 20897 [2023-12-21 13:15:25,177 INFO L226 Difference]: Without dead ends: 20895 [2023-12-21 13:15:25,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:15:25,182 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 298 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:15:25,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 921 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:25,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20895 states. [2023-12-21 13:15:25,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20895 to 10773. [2023-12-21 13:15:25,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10773 states, 10772 states have (on average 1.2903824730783513) internal successors, (13900), 10772 states have internal predecessors, (13900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10773 states to 10773 states and 13900 transitions. [2023-12-21 13:15:25,330 INFO L78 Accepts]: Start accepts. Automaton has 10773 states and 13900 transitions. Word has length 74 [2023-12-21 13:15:25,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:25,331 INFO L495 AbstractCegarLoop]: Abstraction has 10773 states and 13900 transitions. [2023-12-21 13:15:25,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 10773 states and 13900 transitions. [2023-12-21 13:15:25,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 13:15:25,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:25,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:15:25,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 13:15:25,332 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:25,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:25,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1766839438, now seen corresponding path program 1 times [2023-12-21 13:15:25,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:25,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405913151] [2023-12-21 13:15:25,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:25,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:25,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:25,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405913151] [2023-12-21 13:15:25,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405913151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:15:25,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:15:25,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:15:25,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63454715] [2023-12-21 13:15:25,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:15:25,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:15:25,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:25,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:15:25,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:25,363 INFO L87 Difference]: Start difference. First operand 10773 states and 13900 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:25,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:15:25,410 INFO L93 Difference]: Finished difference Result 26161 states and 33594 transitions. [2023-12-21 13:15:25,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:15:25,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-21 13:15:25,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:15:25,424 INFO L225 Difference]: With dead ends: 26161 [2023-12-21 13:15:25,424 INFO L226 Difference]: Without dead ends: 15859 [2023-12-21 13:15:25,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:15:25,436 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 117 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 317 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 [2023-12-21 13:15:25,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 317 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:15:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15859 states. [2023-12-21 13:15:25,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15859 to 15857. [2023-12-21 13:15:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15857 states, 15856 states have (on average 1.2646316851664985) internal successors, (20052), 15856 states have internal predecessors, (20052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15857 states to 15857 states and 20052 transitions. [2023-12-21 13:15:25,578 INFO L78 Accepts]: Start accepts. Automaton has 15857 states and 20052 transitions. Word has length 75 [2023-12-21 13:15:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:15:25,578 INFO L495 AbstractCegarLoop]: Abstraction has 15857 states and 20052 transitions. [2023-12-21 13:15:25,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:15:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 15857 states and 20052 transitions. [2023-12-21 13:15:25,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 13:15:25,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:15:25,583 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:15:25,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 13:15:25,583 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:15:25,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:15:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash 834316340, now seen corresponding path program 1 times [2023-12-21 13:15:25,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:15:25,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576314388] [2023-12-21 13:15:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:25,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:15:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:25,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:15:25,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576314388] [2023-12-21 13:15:25,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576314388] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:15:25,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920325993] [2023-12-21 13:15:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:15:25,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:15:25,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:15:25,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:15:25,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 13:15:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:15:26,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 13:15:26,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:15:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:26,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:15:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:15:27,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920325993] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:15:27,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:15:27,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2023-12-21 13:15:27,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780506753] [2023-12-21 13:15:27,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:15:27,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:15:27,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:15:27,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:15:27,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=886, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:15:27,590 INFO L87 Difference]: Start difference. First operand 15857 states and 20052 transitions. Second operand has 32 states, 32 states have (on average 7.90625) internal successors, (253), 31 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:01,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:01,925 INFO L93 Difference]: Finished difference Result 188264 states and 234406 transitions. [2023-12-21 13:16:01,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 432 states. [2023-12-21 13:16:01,926 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.90625) internal successors, (253), 31 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 13:16:01,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:02,131 INFO L225 Difference]: With dead ends: 188264 [2023-12-21 13:16:02,131 INFO L226 Difference]: Without dead ends: 180218 [2023-12-21 13:16:02,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 460 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99516 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=28379, Invalid=184603, Unknown=0, NotChecked=0, Total=212982 [2023-12-21 13:16:02,184 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 10536 mSDsluCounter, 9825 mSDsCounter, 0 mSdLazyCounter, 9345 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10536 SdHoareTripleChecker+Valid, 10281 SdHoareTripleChecker+Invalid, 9484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 9345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:02,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10536 Valid, 10281 Invalid, 9484 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [139 Valid, 9345 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-12-21 13:16:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180218 states. [2023-12-21 13:16:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180218 to 33232. [2023-12-21 13:16:03,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33232 states, 33231 states have (on average 1.2686347085552647) internal successors, (42158), 33231 states have internal predecessors, (42158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33232 states to 33232 states and 42158 transitions. [2023-12-21 13:16:03,193 INFO L78 Accepts]: Start accepts. Automaton has 33232 states and 42158 transitions. Word has length 94 [2023-12-21 13:16:03,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:03,193 INFO L495 AbstractCegarLoop]: Abstraction has 33232 states and 42158 transitions. [2023-12-21 13:16:03,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.90625) internal successors, (253), 31 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:03,193 INFO L276 IsEmpty]: Start isEmpty. Operand 33232 states and 42158 transitions. [2023-12-21 13:16:03,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 13:16:03,199 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:03,199 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:16:03,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 13:16:03,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:03,403 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:03,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:03,404 INFO L85 PathProgramCache]: Analyzing trace with hash -108251538, now seen corresponding path program 1 times [2023-12-21 13:16:03,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:03,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657481061] [2023-12-21 13:16:03,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:03,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:03,795 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:03,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:03,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657481061] [2023-12-21 13:16:03,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657481061] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:16:03,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:16:03,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:16:03,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62793823] [2023-12-21 13:16:03,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:16:03,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:16:03,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:03,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:16:03,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:16:03,796 INFO L87 Difference]: Start difference. First operand 33232 states and 42158 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:04,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:04,632 INFO L93 Difference]: Finished difference Result 96434 states and 120987 transitions. [2023-12-21 13:16:04,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 13:16:04,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-21 13:16:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:04,749 INFO L225 Difference]: With dead ends: 96434 [2023-12-21 13:16:04,750 INFO L226 Difference]: Without dead ends: 83470 [2023-12-21 13:16:04,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2023-12-21 13:16:04,778 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 1185 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:04,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 1069 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:16:04,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83470 states. [2023-12-21 13:16:05,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83470 to 47968. [2023-12-21 13:16:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47968 states, 47967 states have (on average 1.2667250401317574) internal successors, (60761), 47967 states have internal predecessors, (60761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47968 states to 47968 states and 60761 transitions. [2023-12-21 13:16:05,507 INFO L78 Accepts]: Start accepts. Automaton has 47968 states and 60761 transitions. Word has length 94 [2023-12-21 13:16:05,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:05,507 INFO L495 AbstractCegarLoop]: Abstraction has 47968 states and 60761 transitions. [2023-12-21 13:16:05,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:05,507 INFO L276 IsEmpty]: Start isEmpty. Operand 47968 states and 60761 transitions. [2023-12-21 13:16:05,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:16:05,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:05,516 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] [2023-12-21 13:16:05,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 13:16:05,516 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:05,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:05,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1961257754, now seen corresponding path program 1 times [2023-12-21 13:16:05,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:05,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80809825] [2023-12-21 13:16:05,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:05,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:05,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:05,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80809825] [2023-12-21 13:16:05,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80809825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:16:05,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:16:05,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:16:05,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771495087] [2023-12-21 13:16:05,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:16:05,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:16:05,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:05,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:16:05,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:16:05,571 INFO L87 Difference]: Start difference. First operand 47968 states and 60761 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) [2023-12-21 13:16:05,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:05,757 INFO L93 Difference]: Finished difference Result 95340 states and 120864 transitions. [2023-12-21 13:16:05,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:16:05,757 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 [2023-12-21 13:16:05,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:05,813 INFO L225 Difference]: With dead ends: 95340 [2023-12-21 13:16:05,814 INFO L226 Difference]: Without dead ends: 47970 [2023-12-21 13:16:05,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:16:05,850 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 87 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:05,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 339 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:16:05,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47970 states. [2023-12-21 13:16:06,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47970 to 46233. [2023-12-21 13:16:06,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46233 states, 46232 states have (on average 1.247707215781277) internal successors, (57684), 46232 states have internal predecessors, (57684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46233 states to 46233 states and 57684 transitions. [2023-12-21 13:16:06,539 INFO L78 Accepts]: Start accepts. Automaton has 46233 states and 57684 transitions. Word has length 95 [2023-12-21 13:16:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:06,539 INFO L495 AbstractCegarLoop]: Abstraction has 46233 states and 57684 transitions. [2023-12-21 13:16:06,539 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) [2023-12-21 13:16:06,539 INFO L276 IsEmpty]: Start isEmpty. Operand 46233 states and 57684 transitions. [2023-12-21 13:16:06,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:16:06,544 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:06,544 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:16:06,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 13:16:06,544 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:06,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:06,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1815629671, now seen corresponding path program 1 times [2023-12-21 13:16:06,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:06,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316759465] [2023-12-21 13:16:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:06,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:06,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:06,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316759465] [2023-12-21 13:16:06,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316759465] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:16:06,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184346916] [2023-12-21 13:16:06,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:06,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:06,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:16:06,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:16:06,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 13:16:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:07,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 13:16:07,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:16:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:16:07,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:16:07,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184346916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:16:07,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:16:07,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2023-12-21 13:16:07,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811336753] [2023-12-21 13:16:07,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:16:07,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:16:07,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:07,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:16:07,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:16:07,875 INFO L87 Difference]: Start difference. First operand 46233 states and 57684 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 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) [2023-12-21 13:16:08,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:08,657 INFO L93 Difference]: Finished difference Result 85069 states and 106317 transitions. [2023-12-21 13:16:08,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:16:08,657 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 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 95 [2023-12-21 13:16:08,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:08,727 INFO L225 Difference]: With dead ends: 85069 [2023-12-21 13:16:08,727 INFO L226 Difference]: Without dead ends: 63936 [2023-12-21 13:16:08,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:16:08,755 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 2304 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:08,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2304 Valid, 1616 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:16:08,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63936 states. [2023-12-21 13:16:09,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63936 to 50839. [2023-12-21 13:16:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50839 states, 50838 states have (on average 1.247551044494276) internal successors, (63423), 50838 states have internal predecessors, (63423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:09,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50839 states to 50839 states and 63423 transitions. [2023-12-21 13:16:09,359 INFO L78 Accepts]: Start accepts. Automaton has 50839 states and 63423 transitions. Word has length 95 [2023-12-21 13:16:09,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:09,359 INFO L495 AbstractCegarLoop]: Abstraction has 50839 states and 63423 transitions. [2023-12-21 13:16:09,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 11 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) [2023-12-21 13:16:09,359 INFO L276 IsEmpty]: Start isEmpty. Operand 50839 states and 63423 transitions. [2023-12-21 13:16:09,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:16:09,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:09,364 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-21 13:16:09,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 13:16:09,568 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,SelfDestructingSolverStorable32 [2023-12-21 13:16:09,568 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:09,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:09,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1496795839, now seen corresponding path program 1 times [2023-12-21 13:16:09,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:09,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249212919] [2023-12-21 13:16:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:09,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:09,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:09,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249212919] [2023-12-21 13:16:09,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249212919] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:16:09,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083007325] [2023-12-21 13:16:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:09,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:09,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:16:09,934 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:16:09,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 13:16:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:10,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 13:16:10,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:16:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:10,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:16:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:10,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083007325] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:16:10,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:16:10,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2023-12-21 13:16:10,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320703183] [2023-12-21 13:16:10,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:16:10,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 13:16:10,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:10,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 13:16:10,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:16:10,450 INFO L87 Difference]: Start difference. First operand 50839 states and 63423 transitions. Second operand has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:10,882 INFO L93 Difference]: Finished difference Result 149076 states and 185387 transitions. [2023-12-21 13:16:10,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:16:10,882 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-21 13:16:10,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:11,013 INFO L225 Difference]: With dead ends: 149076 [2023-12-21 13:16:11,013 INFO L226 Difference]: Without dead ends: 98813 [2023-12-21 13:16:11,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:16:11,044 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 385 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:11,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1368 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:16:11,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98813 states. [2023-12-21 13:16:11,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98813 to 78156. [2023-12-21 13:16:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78156 states, 78155 states have (on average 1.2461262875055978) internal successors, (97391), 78155 states have internal predecessors, (97391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:12,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78156 states to 78156 states and 97391 transitions. [2023-12-21 13:16:12,043 INFO L78 Accepts]: Start accepts. Automaton has 78156 states and 97391 transitions. Word has length 95 [2023-12-21 13:16:12,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:12,044 INFO L495 AbstractCegarLoop]: Abstraction has 78156 states and 97391 transitions. [2023-12-21 13:16:12,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:12,044 INFO L276 IsEmpty]: Start isEmpty. Operand 78156 states and 97391 transitions. [2023-12-21 13:16:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:16:12,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:12,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:16:12,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 13:16:12,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:12,270 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:12,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:12,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1149989423, now seen corresponding path program 1 times [2023-12-21 13:16:12,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:12,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995903306] [2023-12-21 13:16:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:12,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:12,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:12,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995903306] [2023-12-21 13:16:12,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995903306] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:16:12,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961633383] [2023-12-21 13:16:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:12,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:12,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:16:12,354 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:16:12,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 13:16:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:12,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:16:12,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:16:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:12,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:16:12,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:12,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961633383] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:16:12,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:16:12,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:16:12,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031782305] [2023-12-21 13:16:12,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:16:12,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:16:12,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:12,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:16:12,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:16:12,995 INFO L87 Difference]: Start difference. First operand 78156 states and 97391 transitions. Second operand has 14 states, 14 states have (on average 19.785714285714285) internal successors, (277), 14 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) [2023-12-21 13:16:13,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:13,768 INFO L93 Difference]: Finished difference Result 168117 states and 208965 transitions. [2023-12-21 13:16:13,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:16:13,768 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.785714285714285) internal successors, (277), 14 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 104 [2023-12-21 13:16:13,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:13,893 INFO L225 Difference]: With dead ends: 168117 [2023-12-21 13:16:13,894 INFO L226 Difference]: Without dead ends: 90465 [2023-12-21 13:16:13,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:16:13,955 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 2919 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2919 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:13,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2919 Valid, 656 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:16:14,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90465 states. [2023-12-21 13:16:14,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90465 to 63891. [2023-12-21 13:16:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63891 states, 63890 states have (on average 1.22620128345594) internal successors, (78342), 63890 states have internal predecessors, (78342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:14,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63891 states to 63891 states and 78342 transitions. [2023-12-21 13:16:14,797 INFO L78 Accepts]: Start accepts. Automaton has 63891 states and 78342 transitions. Word has length 104 [2023-12-21 13:16:14,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:14,797 INFO L495 AbstractCegarLoop]: Abstraction has 63891 states and 78342 transitions. [2023-12-21 13:16:14,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.785714285714285) internal successors, (277), 14 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) [2023-12-21 13:16:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 63891 states and 78342 transitions. [2023-12-21 13:16:14,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-21 13:16:14,803 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:14,803 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:16:14,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 13:16:15,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:15,010 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:15,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:15,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1957583398, now seen corresponding path program 1 times [2023-12-21 13:16:15,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:15,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059144911] [2023-12-21 13:16:15,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:15,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 13:16:15,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:15,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059144911] [2023-12-21 13:16:15,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059144911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:16:15,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:16:15,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:16:15,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001752120] [2023-12-21 13:16:15,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:16:15,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:16:15,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:15,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:16:15,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:16:15,053 INFO L87 Difference]: Start difference. First operand 63891 states and 78342 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:15,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:15,612 INFO L93 Difference]: Finished difference Result 124869 states and 153262 transitions. [2023-12-21 13:16:15,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:16:15,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2023-12-21 13:16:15,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:15,702 INFO L225 Difference]: With dead ends: 124869 [2023-12-21 13:16:15,703 INFO L226 Difference]: Without dead ends: 61536 [2023-12-21 13:16:15,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:16:15,741 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 129 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:15,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 138 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:16:15,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61536 states. [2023-12-21 13:16:16,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61536 to 61145. [2023-12-21 13:16:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61145 states, 61144 states have (on average 1.212253041999215) internal successors, (74122), 61144 states have internal predecessors, (74122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61145 states to 61145 states and 74122 transitions. [2023-12-21 13:16:16,522 INFO L78 Accepts]: Start accepts. Automaton has 61145 states and 74122 transitions. Word has length 105 [2023-12-21 13:16:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:16,522 INFO L495 AbstractCegarLoop]: Abstraction has 61145 states and 74122 transitions. [2023-12-21 13:16:16,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:16,523 INFO L276 IsEmpty]: Start isEmpty. Operand 61145 states and 74122 transitions. [2023-12-21 13:16:16,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:16:16,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:16,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:16:16,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 13:16:16,528 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:16,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:16,529 INFO L85 PathProgramCache]: Analyzing trace with hash 54876668, now seen corresponding path program 1 times [2023-12-21 13:16:16,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:16,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798652379] [2023-12-21 13:16:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:16,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:16,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:16,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798652379] [2023-12-21 13:16:16,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798652379] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:16:16,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182087746] [2023-12-21 13:16:16,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:16,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:16,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:16:16,598 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:16:16,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 13:16:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:16,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:16:16,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:16:17,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:17,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:16:17,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:17,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182087746] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:16:17,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:16:17,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:16:17,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807731655] [2023-12-21 13:16:17,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:16:17,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:16:17,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:17,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:16:17,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:16:17,139 INFO L87 Difference]: Start difference. First operand 61145 states and 74122 transitions. Second operand has 14 states, 14 states have (on average 20.928571428571427) internal successors, (293), 14 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:17,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:17,804 INFO L93 Difference]: Finished difference Result 134771 states and 163297 transitions. [2023-12-21 13:16:17,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 13:16:17,805 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.928571428571427) internal successors, (293), 14 states have internal predecessors, (293), 0 states have call successors, (0), 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 106 [2023-12-21 13:16:17,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:17,883 INFO L225 Difference]: With dead ends: 134771 [2023-12-21 13:16:17,883 INFO L226 Difference]: Without dead ends: 74184 [2023-12-21 13:16:17,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-21 13:16:17,900 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1626 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:17,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 667 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:16:17,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74184 states. [2023-12-21 13:16:18,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74184 to 54733. [2023-12-21 13:16:18,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54733 states, 54732 states have (on average 1.1880618285463713) internal successors, (65025), 54732 states have internal predecessors, (65025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:18,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54733 states to 54733 states and 65025 transitions. [2023-12-21 13:16:18,730 INFO L78 Accepts]: Start accepts. Automaton has 54733 states and 65025 transitions. Word has length 106 [2023-12-21 13:16:18,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:18,730 INFO L495 AbstractCegarLoop]: Abstraction has 54733 states and 65025 transitions. [2023-12-21 13:16:18,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.928571428571427) internal successors, (293), 14 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:18,730 INFO L276 IsEmpty]: Start isEmpty. Operand 54733 states and 65025 transitions. [2023-12-21 13:16:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:16:18,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:18,738 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:16:18,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-21 13:16:18,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-21 13:16:18,942 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:18,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:18,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1224761778, now seen corresponding path program 1 times [2023-12-21 13:16:18,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:18,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221331225] [2023-12-21 13:16:18,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:18,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:19,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:19,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:19,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221331225] [2023-12-21 13:16:19,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221331225] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:16:19,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165623545] [2023-12-21 13:16:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:19,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:19,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:16:19,325 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:16:19,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 13:16:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:19,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 13:16:19,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:16:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:20,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:16:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:20,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165623545] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:16:20,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:16:20,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 32 [2023-12-21 13:16:20,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720125104] [2023-12-21 13:16:20,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:16:20,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:16:20,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:20,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:16:20,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:16:20,571 INFO L87 Difference]: Start difference. First operand 54733 states and 65025 transitions. Second operand has 32 states, 32 states have (on average 8.15625) internal successors, (261), 32 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:22,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:22,627 INFO L93 Difference]: Finished difference Result 226609 states and 269661 transitions. [2023-12-21 13:16:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 13:16:22,627 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.15625) internal successors, (261), 32 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-21 13:16:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:22,886 INFO L225 Difference]: With dead ends: 226609 [2023-12-21 13:16:22,886 INFO L226 Difference]: Without dead ends: 205996 [2023-12-21 13:16:22,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=496, Invalid=2366, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 13:16:22,923 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 3012 mSDsluCounter, 6967 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3012 SdHoareTripleChecker+Valid, 7361 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:22,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3012 Valid, 7361 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:16:23,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205996 states. [2023-12-21 13:16:24,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205996 to 55057. [2023-12-21 13:16:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55057 states, 55056 states have (on average 1.1878814298169136) internal successors, (65400), 55056 states have internal predecessors, (65400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55057 states to 55057 states and 65400 transitions. [2023-12-21 13:16:24,357 INFO L78 Accepts]: Start accepts. Automaton has 55057 states and 65400 transitions. Word has length 109 [2023-12-21 13:16:24,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:24,358 INFO L495 AbstractCegarLoop]: Abstraction has 55057 states and 65400 transitions. [2023-12-21 13:16:24,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.15625) internal successors, (261), 32 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:24,358 INFO L276 IsEmpty]: Start isEmpty. Operand 55057 states and 65400 transitions. [2023-12-21 13:16:24,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:16:24,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:24,362 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:16:24,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 13:16:24,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-21 13:16:24,567 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:24,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:24,567 INFO L85 PathProgramCache]: Analyzing trace with hash 459191732, now seen corresponding path program 1 times [2023-12-21 13:16:24,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:24,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475093738] [2023-12-21 13:16:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:24,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-21 13:16:24,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:24,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475093738] [2023-12-21 13:16:24,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475093738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:16:24,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:16:24,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:16:24,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448474937] [2023-12-21 13:16:24,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:16:24,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:16:24,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:24,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:16:24,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:16:24,612 INFO L87 Difference]: Start difference. First operand 55057 states and 65400 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:25,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:25,086 INFO L93 Difference]: Finished difference Result 99319 states and 117718 transitions. [2023-12-21 13:16:25,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:16:25,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-21 13:16:25,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:25,161 INFO L225 Difference]: With dead ends: 99319 [2023-12-21 13:16:25,161 INFO L226 Difference]: Without dead ends: 79759 [2023-12-21 13:16:25,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:16:25,173 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 336 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:25,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 424 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:16:25,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79759 states. [2023-12-21 13:16:25,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79759 to 62589. [2023-12-21 13:16:25,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62589 states, 62588 states have (on average 1.1889819134658401) internal successors, (74416), 62588 states have internal predecessors, (74416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:25,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62589 states to 62589 states and 74416 transitions. [2023-12-21 13:16:25,971 INFO L78 Accepts]: Start accepts. Automaton has 62589 states and 74416 transitions. Word has length 109 [2023-12-21 13:16:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:25,972 INFO L495 AbstractCegarLoop]: Abstraction has 62589 states and 74416 transitions. [2023-12-21 13:16:25,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 62589 states and 74416 transitions. [2023-12-21 13:16:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:16:25,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:25,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:16:25,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 13:16:25,978 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:25,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:25,978 INFO L85 PathProgramCache]: Analyzing trace with hash 97073007, now seen corresponding path program 1 times [2023-12-21 13:16:25,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:25,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086922874] [2023-12-21 13:16:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:25,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:26,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086922874] [2023-12-21 13:16:26,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086922874] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:16:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283840149] [2023-12-21 13:16:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:26,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:26,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:16:26,426 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:16:26,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 13:16:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:26,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 13:16:26,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:16:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:26,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:16:26,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283840149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:16:26,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:16:26,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 19 [2023-12-21 13:16:26,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442006484] [2023-12-21 13:16:26,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:16:26,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:16:26,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:26,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:16:26,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-12-21 13:16:26,955 INFO L87 Difference]: Start difference. First operand 62589 states and 74416 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:27,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:27,656 INFO L93 Difference]: Finished difference Result 102436 states and 121946 transitions. [2023-12-21 13:16:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:16:27,656 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-21 13:16:27,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:27,729 INFO L225 Difference]: With dead ends: 102436 [2023-12-21 13:16:27,729 INFO L226 Difference]: Without dead ends: 81875 [2023-12-21 13:16:27,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2023-12-21 13:16:27,752 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 882 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 2865 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:27,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 2865 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:16:27,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81875 states. [2023-12-21 13:16:28,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81875 to 76070. [2023-12-21 13:16:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76070 states, 76069 states have (on average 1.1881975574807082) internal successors, (90385), 76069 states have internal predecessors, (90385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76070 states to 76070 states and 90385 transitions. [2023-12-21 13:16:28,653 INFO L78 Accepts]: Start accepts. Automaton has 76070 states and 90385 transitions. Word has length 109 [2023-12-21 13:16:28,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:28,653 INFO L495 AbstractCegarLoop]: Abstraction has 76070 states and 90385 transitions. [2023-12-21 13:16:28,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:28,653 INFO L276 IsEmpty]: Start isEmpty. Operand 76070 states and 90385 transitions. [2023-12-21 13:16:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 13:16:28,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:28,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:16:28,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 13:16:28,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:28,865 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:28,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:28,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1697262161, now seen corresponding path program 1 times [2023-12-21 13:16:28,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:28,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832500506] [2023-12-21 13:16:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:28,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:29,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:29,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:29,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832500506] [2023-12-21 13:16:29,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832500506] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:16:29,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067239769] [2023-12-21 13:16:29,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:29,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:29,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:16:29,229 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:16:29,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 13:16:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:29,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 13:16:29,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:16:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:29,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:16:29,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067239769] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:16:29,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:16:29,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 22 [2023-12-21 13:16:29,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826763629] [2023-12-21 13:16:29,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:16:29,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:16:29,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:29,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:16:29,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2023-12-21 13:16:29,897 INFO L87 Difference]: Start difference. First operand 76070 states and 90385 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:30,529 INFO L93 Difference]: Finished difference Result 101497 states and 120682 transitions. [2023-12-21 13:16:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:16:30,530 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-21 13:16:30,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:30,613 INFO L225 Difference]: With dead ends: 101497 [2023-12-21 13:16:30,613 INFO L226 Difference]: Without dead ends: 80922 [2023-12-21 13:16:30,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:16:30,648 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 881 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:30,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 2770 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:16:30,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80922 states. [2023-12-21 13:16:31,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80922 to 75624. [2023-12-21 13:16:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75624 states, 75623 states have (on average 1.1862925300503815) internal successors, (89711), 75623 states have internal predecessors, (89711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75624 states to 75624 states and 89711 transitions. [2023-12-21 13:16:31,509 INFO L78 Accepts]: Start accepts. Automaton has 75624 states and 89711 transitions. Word has length 109 [2023-12-21 13:16:31,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:31,509 INFO L495 AbstractCegarLoop]: Abstraction has 75624 states and 89711 transitions. [2023-12-21 13:16:31,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:31,509 INFO L276 IsEmpty]: Start isEmpty. Operand 75624 states and 89711 transitions. [2023-12-21 13:16:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-21 13:16:31,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:31,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:16:31,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 13:16:31,719 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,SelfDestructingSolverStorable40 [2023-12-21 13:16:31,720 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:31,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:31,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1524806651, now seen corresponding path program 1 times [2023-12-21 13:16:31,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:31,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22621274] [2023-12-21 13:16:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:31,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:31,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:31,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22621274] [2023-12-21 13:16:31,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22621274] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:16:31,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494373671] [2023-12-21 13:16:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:31,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:31,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:16:31,909 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:16:31,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 13:16:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:32,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:16:32,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:16:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:32,927 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:16:33,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:33,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494373671] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:16:33,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:16:33,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 25 [2023-12-21 13:16:33,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85195978] [2023-12-21 13:16:33,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:16:33,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 13:16:33,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:33,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 13:16:33,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:16:33,508 INFO L87 Difference]: Start difference. First operand 75624 states and 89711 transitions. Second operand has 25 states, 25 states have (on average 10.72) internal successors, (268), 25 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) [2023-12-21 13:16:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:36,760 INFO L93 Difference]: Finished difference Result 310495 states and 365022 transitions. [2023-12-21 13:16:36,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 13:16:36,761 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.72) internal successors, (268), 25 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 110 [2023-12-21 13:16:36,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:37,071 INFO L225 Difference]: With dead ends: 310495 [2023-12-21 13:16:37,071 INFO L226 Difference]: Without dead ends: 255926 [2023-12-21 13:16:37,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=726, Invalid=3180, Unknown=0, NotChecked=0, Total=3906 [2023-12-21 13:16:37,133 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 3317 mSDsluCounter, 3418 mSDsCounter, 0 mSdLazyCounter, 2538 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 3632 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:37,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3317 Valid, 3632 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2538 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 13:16:37,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255926 states. [2023-12-21 13:16:38,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255926 to 76380. [2023-12-21 13:16:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76380 states, 76379 states have (on average 1.1858233284017858) internal successors, (90572), 76379 states have internal predecessors, (90572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:39,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76380 states to 76380 states and 90572 transitions. [2023-12-21 13:16:39,024 INFO L78 Accepts]: Start accepts. Automaton has 76380 states and 90572 transitions. Word has length 110 [2023-12-21 13:16:39,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:39,025 INFO L495 AbstractCegarLoop]: Abstraction has 76380 states and 90572 transitions. [2023-12-21 13:16:39,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.72) internal successors, (268), 25 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) [2023-12-21 13:16:39,025 INFO L276 IsEmpty]: Start isEmpty. Operand 76380 states and 90572 transitions. [2023-12-21 13:16:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 13:16:39,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:39,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:16:39,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 13:16:39,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:39,237 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:39,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:39,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1281357331, now seen corresponding path program 1 times [2023-12-21 13:16:39,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:39,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498532275] [2023-12-21 13:16:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:39,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:39,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:39,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498532275] [2023-12-21 13:16:39,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498532275] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:16:39,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22188689] [2023-12-21 13:16:39,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:39,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:39,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:16:39,858 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:16:39,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 13:16:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:39,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:16:39,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:16:40,501 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:40,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:16:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:41,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22188689] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:16:41,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:16:41,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 12] total 37 [2023-12-21 13:16:41,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291750445] [2023-12-21 13:16:41,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:16:41,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-21 13:16:41,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:41,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-21 13:16:41,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 13:16:41,089 INFO L87 Difference]: Start difference. First operand 76380 states and 90572 transitions. Second operand has 37 states, 37 states have (on average 8.135135135135135) internal successors, (301), 37 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:42,522 INFO L93 Difference]: Finished difference Result 203769 states and 242919 transitions. [2023-12-21 13:16:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:16:42,523 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.135135135135135) internal successors, (301), 37 states have internal predecessors, (301), 0 states have call successors, (0), 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 111 [2023-12-21 13:16:42,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:42,722 INFO L225 Difference]: With dead ends: 203769 [2023-12-21 13:16:42,722 INFO L226 Difference]: Without dead ends: 180846 [2023-12-21 13:16:42,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=461, Invalid=2401, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 13:16:42,767 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 3822 mSDsluCounter, 4638 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3822 SdHoareTripleChecker+Valid, 4999 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:42,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3822 Valid, 4999 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:16:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180846 states. [2023-12-21 13:16:43,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180846 to 76416. [2023-12-21 13:16:43,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76416 states, 76415 states have (on average 1.1857357848589936) internal successors, (90608), 76415 states have internal predecessors, (90608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76416 states to 76416 states and 90608 transitions. [2023-12-21 13:16:44,078 INFO L78 Accepts]: Start accepts. Automaton has 76416 states and 90608 transitions. Word has length 111 [2023-12-21 13:16:44,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:44,078 INFO L495 AbstractCegarLoop]: Abstraction has 76416 states and 90608 transitions. [2023-12-21 13:16:44,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.135135135135135) internal successors, (301), 37 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:44,078 INFO L276 IsEmpty]: Start isEmpty. Operand 76416 states and 90608 transitions. [2023-12-21 13:16:44,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 13:16:44,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:44,084 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:16:44,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 13:16:44,288 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,SelfDestructingSolverStorable42 [2023-12-21 13:16:44,288 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:44,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:44,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1764081932, now seen corresponding path program 1 times [2023-12-21 13:16:44,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:44,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508043566] [2023-12-21 13:16:44,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:44,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:16:44,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:44,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508043566] [2023-12-21 13:16:44,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508043566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:16:44,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:16:44,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:16:44,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756465560] [2023-12-21 13:16:44,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:16:44,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:16:44,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:44,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:16:44,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:16:44,923 INFO L87 Difference]: Start difference. First operand 76416 states and 90608 transitions. Second operand has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:45,893 INFO L93 Difference]: Finished difference Result 106218 states and 126221 transitions. [2023-12-21 13:16:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:16:45,893 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 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 111 [2023-12-21 13:16:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:45,977 INFO L225 Difference]: With dead ends: 106218 [2023-12-21 13:16:45,978 INFO L226 Difference]: Without dead ends: 92393 [2023-12-21 13:16:45,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2023-12-21 13:16:45,987 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 1829 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:45,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 1586 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:16:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92393 states. [2023-12-21 13:16:46,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92393 to 73921. [2023-12-21 13:16:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73921 states, 73920 states have (on average 1.1852813852813853) internal successors, (87616), 73920 states have internal predecessors, (87616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73921 states to 73921 states and 87616 transitions. [2023-12-21 13:16:46,701 INFO L78 Accepts]: Start accepts. Automaton has 73921 states and 87616 transitions. Word has length 111 [2023-12-21 13:16:46,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:46,702 INFO L495 AbstractCegarLoop]: Abstraction has 73921 states and 87616 transitions. [2023-12-21 13:16:46,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.833333333333334) internal successors, (106), 11 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:46,702 INFO L276 IsEmpty]: Start isEmpty. Operand 73921 states and 87616 transitions. [2023-12-21 13:16:46,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-21 13:16:46,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:46,707 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:16:46,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-21 13:16:46,708 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:46,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1314731638, now seen corresponding path program 1 times [2023-12-21 13:16:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:46,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442269740] [2023-12-21 13:16:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:46,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:47,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:47,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442269740] [2023-12-21 13:16:47,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442269740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:16:47,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:16:47,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 13:16:47,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796830779] [2023-12-21 13:16:47,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:16:47,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 13:16:47,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:47,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 13:16:47,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-21 13:16:47,331 INFO L87 Difference]: Start difference. First operand 73921 states and 87616 transitions. Second operand has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:48,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:48,595 INFO L93 Difference]: Finished difference Result 97053 states and 115160 transitions. [2023-12-21 13:16:48,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 13:16:48,595 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2023-12-21 13:16:48,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:48,681 INFO L225 Difference]: With dead ends: 97053 [2023-12-21 13:16:48,682 INFO L226 Difference]: Without dead ends: 87509 [2023-12-21 13:16:48,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=244, Invalid=812, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 13:16:48,707 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1349 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 4084 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:48,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 4084 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:16:48,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87509 states. [2023-12-21 13:16:49,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87509 to 73522. [2023-12-21 13:16:49,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73522 states, 73521 states have (on average 1.1840562560356904) internal successors, (87053), 73521 states have internal predecessors, (87053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:49,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73522 states to 73522 states and 87053 transitions. [2023-12-21 13:16:49,433 INFO L78 Accepts]: Start accepts. Automaton has 73522 states and 87053 transitions. Word has length 111 [2023-12-21 13:16:49,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:49,433 INFO L495 AbstractCegarLoop]: Abstraction has 73522 states and 87053 transitions. [2023-12-21 13:16:49,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.529411764705882) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand 73522 states and 87053 transitions. [2023-12-21 13:16:49,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 13:16:49,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:49,455 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:16:49,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 13:16:49,455 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:49,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1768087200, now seen corresponding path program 1 times [2023-12-21 13:16:49,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:49,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031996181] [2023-12-21 13:16:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:49,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:49,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:49,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031996181] [2023-12-21 13:16:49,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031996181] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:16:49,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234468562] [2023-12-21 13:16:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:49,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:49,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:16:49,931 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:16:49,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 13:16:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:50,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 13:16:50,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:16:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:50,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:16:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:51,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234468562] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:16:51,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:16:51,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-12-21 13:16:51,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630339325] [2023-12-21 13:16:51,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:16:51,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 13:16:51,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:51,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 13:16:51,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2023-12-21 13:16:51,644 INFO L87 Difference]: Start difference. First operand 73522 states and 87053 transitions. Second operand has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 25 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:53,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:16:53,284 INFO L93 Difference]: Finished difference Result 236257 states and 280254 transitions. [2023-12-21 13:16:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 13:16:53,285 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 25 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-21 13:16:53,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:16:53,496 INFO L225 Difference]: With dead ends: 236257 [2023-12-21 13:16:53,496 INFO L226 Difference]: Without dead ends: 187006 [2023-12-21 13:16:53,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=408, Invalid=1232, Unknown=0, NotChecked=0, Total=1640 [2023-12-21 13:16:53,558 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1942 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1942 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:16:53,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1942 Valid, 2165 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:16:53,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187006 states. [2023-12-21 13:16:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187006 to 73814. [2023-12-21 13:16:54,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73814 states, 73813 states have (on average 1.183897145489277) internal successors, (87387), 73813 states have internal predecessors, (87387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73814 states to 73814 states and 87387 transitions. [2023-12-21 13:16:55,254 INFO L78 Accepts]: Start accepts. Automaton has 73814 states and 87387 transitions. Word has length 113 [2023-12-21 13:16:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:16:55,255 INFO L495 AbstractCegarLoop]: Abstraction has 73814 states and 87387 transitions. [2023-12-21 13:16:55,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.26923076923077) internal successors, (241), 25 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:16:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 73814 states and 87387 transitions. [2023-12-21 13:16:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 13:16:55,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:16:55,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:16:55,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 13:16:55,472 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,SelfDestructingSolverStorable45 [2023-12-21 13:16:55,472 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:16:55,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:16:55,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1046028587, now seen corresponding path program 1 times [2023-12-21 13:16:55,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:16:55,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813640454] [2023-12-21 13:16:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:55,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:16:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:55,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:16:55,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813640454] [2023-12-21 13:16:55,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813640454] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:16:55,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488852551] [2023-12-21 13:16:55,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:16:55,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:16:55,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:16:55,897 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:16:55,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 13:16:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:16:56,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-21 13:16:56,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:16:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:16:57,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:16:57,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488852551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:16:57,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:16:57,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [14] total 37 [2023-12-21 13:16:57,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342642003] [2023-12-21 13:16:57,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:16:57,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 13:16:57,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:16:57,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 13:16:57,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 13:16:57,676 INFO L87 Difference]: Start difference. First operand 73814 states and 87387 transitions. Second operand has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:17:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:17:00,068 INFO L93 Difference]: Finished difference Result 159621 states and 189634 transitions. [2023-12-21 13:17:00,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-21 13:17:00,069 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2023-12-21 13:17:00,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:17:00,215 INFO L225 Difference]: With dead ends: 159621 [2023-12-21 13:17:00,215 INFO L226 Difference]: Without dead ends: 129993 [2023-12-21 13:17:00,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=279, Invalid=2801, Unknown=0, NotChecked=0, Total=3080 [2023-12-21 13:17:00,264 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 1580 mSDsluCounter, 6136 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 6546 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:17:00,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1580 Valid, 6546 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 13:17:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129993 states. [2023-12-21 13:17:01,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129993 to 97476. [2023-12-21 13:17:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97476 states, 97475 states have (on average 1.1824980764298538) internal successors, (115264), 97475 states have internal predecessors, (115264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:17:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97476 states to 97476 states and 115264 transitions. [2023-12-21 13:17:01,543 INFO L78 Accepts]: Start accepts. Automaton has 97476 states and 115264 transitions. Word has length 113 [2023-12-21 13:17:01,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:17:01,543 INFO L495 AbstractCegarLoop]: Abstraction has 97476 states and 115264 transitions. [2023-12-21 13:17:01,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.708333333333333) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:17:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 97476 states and 115264 transitions. [2023-12-21 13:17:01,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 13:17:01,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:17:01,549 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:17:01,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 13:17:01,750 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,SelfDestructingSolverStorable46 [2023-12-21 13:17:01,750 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:17:01,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:17:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash -548501196, now seen corresponding path program 1 times [2023-12-21 13:17:01,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:17:01,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463059116] [2023-12-21 13:17:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:17:01,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:17:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:17:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:17:02,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:17:02,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463059116] [2023-12-21 13:17:02,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463059116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:17:02,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:17:02,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 13:17:02,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437451963] [2023-12-21 13:17:02,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:17:02,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 13:17:02,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:17:02,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 13:17:02,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:17:02,182 INFO L87 Difference]: Start difference. First operand 97476 states and 115264 transitions. Second operand has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 14 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:17:08,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:17:08,665 INFO L93 Difference]: Finished difference Result 159298 states and 186405 transitions. [2023-12-21 13:17:08,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-21 13:17:08,665 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 14 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2023-12-21 13:17:08,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:17:08,962 INFO L225 Difference]: With dead ends: 159298 [2023-12-21 13:17:08,962 INFO L226 Difference]: Without dead ends: 151165 [2023-12-21 13:17:09,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4671 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2354, Invalid=10528, Unknown=0, NotChecked=0, Total=12882 [2023-12-21 13:17:09,021 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 3123 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3123 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:17:09,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3123 Valid, 2797 Invalid, 2831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2797 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 13:17:09,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151165 states. [2023-12-21 13:17:10,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151165 to 100792. [2023-12-21 13:17:10,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100792 states, 100791 states have (on average 1.1826353543471144) internal successors, (119199), 100791 states have internal predecessors, (119199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:17:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100792 states to 100792 states and 119199 transitions. [2023-12-21 13:17:10,339 INFO L78 Accepts]: Start accepts. Automaton has 100792 states and 119199 transitions. Word has length 113 [2023-12-21 13:17:10,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:17:10,339 INFO L495 AbstractCegarLoop]: Abstraction has 100792 states and 119199 transitions. [2023-12-21 13:17:10,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 14 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:17:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 100792 states and 119199 transitions. [2023-12-21 13:17:10,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-21 13:17:10,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:17:10,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:17:10,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-21 13:17:10,345 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:17:10,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:17:10,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1878972126, now seen corresponding path program 1 times [2023-12-21 13:17:10,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:17:10,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053303610] [2023-12-21 13:17:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:17:10,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:17:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:17:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:17:11,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:17:11,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053303610] [2023-12-21 13:17:11,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053303610] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:17:11,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924438503] [2023-12-21 13:17:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:17:11,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:17:11,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:17:11,414 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:17:11,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 13:17:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:17:11,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-21 13:17:11,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:17:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:17:13,334 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:17:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:17:17,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924438503] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:17:17,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:17:17,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 73 [2023-12-21 13:17:17,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489048329] [2023-12-21 13:17:17,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:17:17,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-21 13:17:17,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:17:17,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-21 13:17:17,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=4908, Unknown=0, NotChecked=0, Total=5256 [2023-12-21 13:17:17,222 INFO L87 Difference]: Start difference. First operand 100792 states and 119199 transitions. Second operand has 73 states, 73 states have (on average 4.438356164383562) internal successors, (324), 73 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)