/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:54:06,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:54:06,974 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:54:06,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:54:06,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:54:06,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:54:06,996 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:54:06,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:54:06,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:54:06,998 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:54:06,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:54:06,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:54:06,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:54:06,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:54:06,999 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:54:07,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:54:07,000 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:54:07,000 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:54:07,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:54:07,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:54:07,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:54:07,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:54:07,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:54:07,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:54:07,008 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:54:07,008 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:54:07,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:54:07,008 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:54:07,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:54:07,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:54:07,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:54:07,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:54:07,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:54:07,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:54:07,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:54:07,010 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:54:07,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:54:07,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:54:07,011 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:54:07,011 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:54:07,011 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:54:07,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:54:07,015 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:54:07,015 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:54:07,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:54:07,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:54:07,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:54:07,292 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:54:07,292 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:54:07,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label04.c [2023-12-15 17:54:08,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:54:08,832 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:54:08,833 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label04.c [2023-12-15 17:54:08,871 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b676e8f/28a49cb3caf0403d8b2501c3f29ee8e1/FLAGe317aca15 [2023-12-15 17:54:08,887 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30b676e8f/28a49cb3caf0403d8b2501c3f29ee8e1 [2023-12-15 17:54:08,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:54:08,890 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:54:08,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:54:08,893 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:54:08,897 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:54:08,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:54:08" (1/1) ... [2023-12-15 17:54:08,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db69131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:08, skipping insertion in model container [2023-12-15 17:54:08,899 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:54:08" (1/1) ... [2023-12-15 17:54:09,004 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:54:09,359 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label04.c[11640,11653] [2023-12-15 17:54:09,405 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label04.c[18701,18714] [2023-12-15 17:54:10,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:54:10,097 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:54:10,131 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label04.c[11640,11653] [2023-12-15 17:54:10,152 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label04.c[18701,18714] [2023-12-15 17:54:10,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:54:10,540 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:54:10,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10 WrapperNode [2023-12-15 17:54:10,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:54:10,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:54:10,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:54:10,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:54:10,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10" (1/1) ... [2023-12-15 17:54:10,606 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10" (1/1) ... [2023-12-15 17:54:10,883 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5094 [2023-12-15 17:54:10,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:54:10,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:54:10,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:54:10,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:54:10,893 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10" (1/1) ... [2023-12-15 17:54:10,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10" (1/1) ... [2023-12-15 17:54:11,045 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10" (1/1) ... [2023-12-15 17:54:11,185 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]. [2023-12-15 17:54:11,185 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10" (1/1) ... [2023-12-15 17:54:11,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10" (1/1) ... [2023-12-15 17:54:11,351 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10" (1/1) ... [2023-12-15 17:54:11,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10" (1/1) ... [2023-12-15 17:54:11,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10" (1/1) ... [2023-12-15 17:54:11,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10" (1/1) ... [2023-12-15 17:54:11,488 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:54:11,489 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:54:11,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:54:11,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:54:11,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10" (1/1) ... [2023-12-15 17:54:11,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:54:11,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:54:11,522 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) [2023-12-15 17:54:11,536 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 [2023-12-15 17:54:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:54:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:54:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:54:11,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:54:11,658 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:54:11,660 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:54:15,583 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:54:15,635 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:54:15,636 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-15 17:54:15,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:54:15 BoogieIcfgContainer [2023-12-15 17:54:15,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:54:15,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:54:15,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:54:15,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:54:15,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:54:08" (1/3) ... [2023-12-15 17:54:15,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2daa9e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:54:15, skipping insertion in model container [2023-12-15 17:54:15,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:54:10" (2/3) ... [2023-12-15 17:54:15,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2daa9e3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:54:15, skipping insertion in model container [2023-12-15 17:54:15,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:54:15" (3/3) ... [2023-12-15 17:54:15,643 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label04.c [2023-12-15 17:54:15,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:54:15,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:54:15,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:54:15,733 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;@458d8380, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:54:15,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:54:15,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:15,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 17:54:15,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:15,754 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] [2023-12-15 17:54:15,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:15,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:15,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1694538375, now seen corresponding path program 1 times [2023-12-15 17:54:15,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:15,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751447473] [2023-12-15 17:54:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:15,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:16,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:16,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751447473] [2023-12-15 17:54:16,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751447473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:16,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:16,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:54:16,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679079810] [2023-12-15 17:54:16,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:16,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 17:54:16,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:16,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 17:54:16,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:54:16,083 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:16,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:16,188 INFO L93 Difference]: Finished difference Result 1633 states and 3216 transitions. [2023-12-15 17:54:16,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 17:54:16,194 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-15 17:54:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:16,215 INFO L225 Difference]: With dead ends: 1633 [2023-12-15 17:54:16,215 INFO L226 Difference]: Without dead ends: 830 [2023-12-15 17:54:16,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:54:16,224 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:16,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1571 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-15 17:54:16,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-15 17:54:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8973429951690821) internal successors, (1571), 829 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1571 transitions. [2023-12-15 17:54:16,290 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1571 transitions. Word has length 21 [2023-12-15 17:54:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:16,291 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1571 transitions. [2023-12-15 17:54:16,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1571 transitions. [2023-12-15 17:54:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 17:54:16,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:16,292 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] [2023-12-15 17:54:16,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:54:16,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:16,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:16,293 INFO L85 PathProgramCache]: Analyzing trace with hash 106190473, now seen corresponding path program 1 times [2023-12-15 17:54:16,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:16,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431439243] [2023-12-15 17:54:16,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:16,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:16,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:16,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431439243] [2023-12-15 17:54:16,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431439243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:16,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:16,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:54:16,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162241954] [2023-12-15 17:54:16,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:16,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:54:16,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:16,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:54:16,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:54:16,576 INFO L87 Difference]: Start difference. First operand 830 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:16,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:16,707 INFO L93 Difference]: Finished difference Result 874 states and 1640 transitions. [2023-12-15 17:54:16,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:54:16,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-15 17:54:16,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:16,716 INFO L225 Difference]: With dead ends: 874 [2023-12-15 17:54:16,716 INFO L226 Difference]: Without dead ends: 830 [2023-12-15 17:54:16,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:54:16,718 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:16,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:54:16,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-15 17:54:16,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-15 17:54:16,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8599033816425121) internal successors, (1540), 829 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:16,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1540 transitions. [2023-12-15 17:54:16,752 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1540 transitions. Word has length 21 [2023-12-15 17:54:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:16,752 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1540 transitions. [2023-12-15 17:54:16,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1540 transitions. [2023-12-15 17:54:16,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-15 17:54:16,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:16,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:16,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:54:16,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:16,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:16,767 INFO L85 PathProgramCache]: Analyzing trace with hash -945525728, now seen corresponding path program 1 times [2023-12-15 17:54:16,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:16,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659934041] [2023-12-15 17:54:16,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:16,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:16,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:16,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:16,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659934041] [2023-12-15 17:54:16,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659934041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:16,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:16,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:54:16,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125697616] [2023-12-15 17:54:16,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:16,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:54:16,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:16,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:54:16,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:54:16,996 INFO L87 Difference]: Start difference. First operand 830 states and 1540 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2023-12-15 17:54:17,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:17,312 INFO L93 Difference]: Finished difference Result 1240 states and 2200 transitions. [2023-12-15 17:54:17,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 17:54:17,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 [2023-12-15 17:54:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:17,319 INFO L225 Difference]: With dead ends: 1240 [2023-12-15 17:54:17,319 INFO L226 Difference]: Without dead ends: 1199 [2023-12-15 17:54:17,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-15 17:54:17,321 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7933 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:17,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 2700 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:54:17,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-12-15 17:54:17,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 869. [2023-12-15 17:54:17,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 867 states have (on average 1.8489042675893888) internal successors, (1603), 868 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:17,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1603 transitions. [2023-12-15 17:54:17,346 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1603 transitions. Word has length 51 [2023-12-15 17:54:17,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:17,347 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1603 transitions. [2023-12-15 17:54:17,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2023-12-15 17:54:17,347 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1603 transitions. [2023-12-15 17:54:17,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-15 17:54:17,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:17,349 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] [2023-12-15 17:54:17,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:54:17,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:17,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:17,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1737092336, now seen corresponding path program 1 times [2023-12-15 17:54:17,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:17,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778554274] [2023-12-15 17:54:17,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:17,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:17,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:17,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778554274] [2023-12-15 17:54:17,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778554274] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:17,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:17,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:17,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024885489] [2023-12-15 17:54:17,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:17,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:17,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:17,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:17,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:17,436 INFO L87 Difference]: Start difference. First operand 869 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2023-12-15 17:54:17,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:17,474 INFO L93 Difference]: Finished difference Result 1018 states and 1842 transitions. [2023-12-15 17:54:17,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:17,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 [2023-12-15 17:54:17,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:17,478 INFO L225 Difference]: With dead ends: 1018 [2023-12-15 17:54:17,479 INFO L226 Difference]: Without dead ends: 938 [2023-12-15 17:54:17,479 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 [2023-12-15 17:54:17,480 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1595 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 [2023-12-15 17:54:17,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1595 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:17,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-15 17:54:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-12-15 17:54:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8297644539614561) internal successors, (1709), 935 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:17,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1709 transitions. [2023-12-15 17:54:17,503 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1709 transitions. Word has length 53 [2023-12-15 17:54:17,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:17,503 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1709 transitions. [2023-12-15 17:54:17,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2023-12-15 17:54:17,504 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1709 transitions. [2023-12-15 17:54:17,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-15 17:54:17,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:17,505 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] [2023-12-15 17:54:17,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:54:17,505 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:17,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:17,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1739237288, now seen corresponding path program 1 times [2023-12-15 17:54:17,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:17,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977416218] [2023-12-15 17:54:17,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:17,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:17,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:17,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:17,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977416218] [2023-12-15 17:54:17,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977416218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:17,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:17,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:54:17,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831533799] [2023-12-15 17:54:17,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:17,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:54:17,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:17,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:54:17,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:54:17,766 INFO L87 Difference]: Start difference. First operand 936 states and 1709 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2023-12-15 17:54:17,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:17,965 INFO L93 Difference]: Finished difference Result 1085 states and 1945 transitions. [2023-12-15 17:54:17,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:54:17,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 [2023-12-15 17:54:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:17,969 INFO L225 Difference]: With dead ends: 1085 [2023-12-15 17:54:17,970 INFO L226 Difference]: Without dead ends: 938 [2023-12-15 17:54:17,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-15 17:54:17,971 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 7439 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7439 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:17,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7439 Valid, 1775 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:54:17,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-15 17:54:17,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-12-15 17:54:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8276231263383298) internal successors, (1707), 935 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:17,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1707 transitions. [2023-12-15 17:54:17,993 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1707 transitions. Word has length 53 [2023-12-15 17:54:17,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:17,993 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1707 transitions. [2023-12-15 17:54:17,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2023-12-15 17:54:17,993 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1707 transitions. [2023-12-15 17:54:17,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-15 17:54:17,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:17,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:17,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:54:17,995 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:17,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2047294359, now seen corresponding path program 1 times [2023-12-15 17:54:17,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:17,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002457146] [2023-12-15 17:54:17,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:17,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:18,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:18,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:18,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002457146] [2023-12-15 17:54:18,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002457146] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:18,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:18,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:54:18,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793440545] [2023-12-15 17:54:18,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:18,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:54:18,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:18,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:54:18,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:54:18,171 INFO L87 Difference]: Start difference. First operand 936 states and 1707 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:18,213 INFO L93 Difference]: Finished difference Result 944 states and 1716 transitions. [2023-12-15 17:54:18,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:54:18,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-12-15 17:54:18,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:18,217 INFO L225 Difference]: With dead ends: 944 [2023-12-15 17:54:18,218 INFO L226 Difference]: Without dead ends: 942 [2023-12-15 17:54:18,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:54:18,219 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4600 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:18,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:18,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-12-15 17:54:18,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 940. [2023-12-15 17:54:18,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 938 states have (on average 1.8230277185501067) internal successors, (1710), 939 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1710 transitions. [2023-12-15 17:54:18,241 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1710 transitions. Word has length 54 [2023-12-15 17:54:18,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:18,242 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1710 transitions. [2023-12-15 17:54:18,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,242 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1710 transitions. [2023-12-15 17:54:18,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 17:54:18,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:18,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:18,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:54:18,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:18,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:18,244 INFO L85 PathProgramCache]: Analyzing trace with hash -115097624, now seen corresponding path program 1 times [2023-12-15 17:54:18,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:18,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810203191] [2023-12-15 17:54:18,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:18,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:18,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:18,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810203191] [2023-12-15 17:54:18,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810203191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:18,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:18,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:18,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099612589] [2023-12-15 17:54:18,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:18,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:18,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:18,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:18,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:18,304 INFO L87 Difference]: Start difference. First operand 940 states and 1710 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:18,339 INFO L93 Difference]: Finished difference Result 1102 states and 1963 transitions. [2023-12-15 17:54:18,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:18,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-15 17:54:18,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:18,344 INFO L225 Difference]: With dead ends: 1102 [2023-12-15 17:54:18,344 INFO L226 Difference]: Without dead ends: 1018 [2023-12-15 17:54:18,346 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 [2023-12-15 17:54:18,347 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 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 [2023-12-15 17:54:18,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:18,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2023-12-15 17:54:18,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2023-12-15 17:54:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1014 states have (on average 1.801775147928994) internal successors, (1827), 1015 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1827 transitions. [2023-12-15 17:54:18,369 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1827 transitions. Word has length 55 [2023-12-15 17:54:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:18,369 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1827 transitions. [2023-12-15 17:54:18,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1827 transitions. [2023-12-15 17:54:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 17:54:18,370 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:18,370 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] [2023-12-15 17:54:18,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:54:18,371 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:18,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:18,371 INFO L85 PathProgramCache]: Analyzing trace with hash -343736856, now seen corresponding path program 1 times [2023-12-15 17:54:18,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:18,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700847594] [2023-12-15 17:54:18,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:18,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:18,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:18,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700847594] [2023-12-15 17:54:18,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700847594] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:18,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:18,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:18,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453810605] [2023-12-15 17:54:18,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:18,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:18,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:18,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:18,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:18,426 INFO L87 Difference]: Start difference. First operand 1016 states and 1827 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:18,459 INFO L93 Difference]: Finished difference Result 1442 states and 2487 transitions. [2023-12-15 17:54:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:18,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-15 17:54:18,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:18,466 INFO L225 Difference]: With dead ends: 1442 [2023-12-15 17:54:18,466 INFO L226 Difference]: Without dead ends: 1217 [2023-12-15 17:54:18,467 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 [2023-12-15 17:54:18,468 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 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 [2023-12-15 17:54:18,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:18,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-12-15 17:54:18,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1215. [2023-12-15 17:54:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1213 states have (on average 1.7551525144270403) internal successors, (2129), 1214 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2129 transitions. [2023-12-15 17:54:18,496 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2129 transitions. Word has length 55 [2023-12-15 17:54:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:18,497 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 2129 transitions. [2023-12-15 17:54:18,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2129 transitions. [2023-12-15 17:54:18,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 17:54:18,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:18,498 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] [2023-12-15 17:54:18,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:54:18,498 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:18,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash -969392920, now seen corresponding path program 1 times [2023-12-15 17:54:18,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:18,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021118967] [2023-12-15 17:54:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:18,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:18,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021118967] [2023-12-15 17:54:18,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021118967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:18,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:18,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:18,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012917406] [2023-12-15 17:54:18,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:18,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:18,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:18,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:18,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:18,566 INFO L87 Difference]: Start difference. First operand 1215 states and 2129 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:18,632 INFO L93 Difference]: Finished difference Result 2015 states and 3351 transitions. [2023-12-15 17:54:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:18,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-15 17:54:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:18,639 INFO L225 Difference]: With dead ends: 2015 [2023-12-15 17:54:18,639 INFO L226 Difference]: Without dead ends: 1591 [2023-12-15 17:54:18,640 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 [2023-12-15 17:54:18,641 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 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 [2023-12-15 17:54:18,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2023-12-15 17:54:18,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1589. [2023-12-15 17:54:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.6918714555765595) internal successors, (2685), 1588 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2685 transitions. [2023-12-15 17:54:18,674 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2685 transitions. Word has length 55 [2023-12-15 17:54:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:18,675 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2685 transitions. [2023-12-15 17:54:18,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2685 transitions. [2023-12-15 17:54:18,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 17:54:18,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:18,675 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] [2023-12-15 17:54:18,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:54:18,676 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:18,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:18,676 INFO L85 PathProgramCache]: Analyzing trace with hash -80659480, now seen corresponding path program 1 times [2023-12-15 17:54:18,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:18,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187886326] [2023-12-15 17:54:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:18,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:18,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:18,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187886326] [2023-12-15 17:54:18,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187886326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:18,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:18,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:18,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067229821] [2023-12-15 17:54:18,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:18,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:18,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:18,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:18,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:18,721 INFO L87 Difference]: Start difference. First operand 1589 states and 2685 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:18,773 INFO L93 Difference]: Finished difference Result 3089 states and 4935 transitions. [2023-12-15 17:54:18,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:18,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-15 17:54:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:18,782 INFO L225 Difference]: With dead ends: 3089 [2023-12-15 17:54:18,782 INFO L226 Difference]: Without dead ends: 2291 [2023-12-15 17:54:18,785 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 [2023-12-15 17:54:18,786 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 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 [2023-12-15 17:54:18,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:18,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2023-12-15 17:54:18,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2289. [2023-12-15 17:54:18,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2287 states have (on average 1.6182772190642762) internal successors, (3701), 2288 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3701 transitions. [2023-12-15 17:54:18,850 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3701 transitions. Word has length 55 [2023-12-15 17:54:18,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:18,850 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 3701 transitions. [2023-12-15 17:54:18,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3701 transitions. [2023-12-15 17:54:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 17:54:18,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:18,851 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] [2023-12-15 17:54:18,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:54:18,851 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:18,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash -383680792, now seen corresponding path program 1 times [2023-12-15 17:54:18,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:18,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596770121] [2023-12-15 17:54:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:18,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:18,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596770121] [2023-12-15 17:54:18,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596770121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:18,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:18,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:18,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191874336] [2023-12-15 17:54:18,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:18,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:18,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:18,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:18,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:18,910 INFO L87 Difference]: Start difference. First operand 2289 states and 3701 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:18,976 INFO L93 Difference]: Finished difference Result 5093 states and 7815 transitions. [2023-12-15 17:54:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:18,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-12-15 17:54:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:18,989 INFO L225 Difference]: With dead ends: 5093 [2023-12-15 17:54:18,990 INFO L226 Difference]: Without dead ends: 3595 [2023-12-15 17:54:18,993 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 [2023-12-15 17:54:18,993 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 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 [2023-12-15 17:54:18,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:18,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2023-12-15 17:54:19,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3593. [2023-12-15 17:54:19,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3591 states have (on average 1.5430242272347536) internal successors, (5541), 3592 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 5541 transitions. [2023-12-15 17:54:19,088 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 5541 transitions. Word has length 55 [2023-12-15 17:54:19,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:19,088 INFO L495 AbstractCegarLoop]: Abstraction has 3593 states and 5541 transitions. [2023-12-15 17:54:19,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 5541 transitions. [2023-12-15 17:54:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 17:54:19,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:19,089 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] [2023-12-15 17:54:19,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:54:19,090 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:19,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:19,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2135574669, now seen corresponding path program 1 times [2023-12-15 17:54:19,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:19,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321345910] [2023-12-15 17:54:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:19,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:19,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:19,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321345910] [2023-12-15 17:54:19,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321345910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:19,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:19,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:54:19,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278275962] [2023-12-15 17:54:19,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:19,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:19,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:19,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:19,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:19,154 INFO L87 Difference]: Start difference. First operand 3593 states and 5541 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:22,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:22,598 INFO L93 Difference]: Finished difference Result 5097 states and 8414 transitions. [2023-12-15 17:54:22,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:22,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2023-12-15 17:54:22,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:22,615 INFO L225 Difference]: With dead ends: 5097 [2023-12-15 17:54:22,615 INFO L226 Difference]: Without dead ends: 4344 [2023-12-15 17:54:22,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:22,618 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 856 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:22,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 175 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-15 17:54:22,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2023-12-15 17:54:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 4344. [2023-12-15 17:54:22,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4342 states have (on average 1.592814371257485) internal successors, (6916), 4343 states have internal predecessors, (6916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6916 transitions. [2023-12-15 17:54:22,723 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6916 transitions. Word has length 60 [2023-12-15 17:54:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:22,724 INFO L495 AbstractCegarLoop]: Abstraction has 4344 states and 6916 transitions. [2023-12-15 17:54:22,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:22,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6916 transitions. [2023-12-15 17:54:22,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 17:54:22,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:22,729 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:22,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:54:22,730 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:22,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:22,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1747458161, now seen corresponding path program 1 times [2023-12-15 17:54:22,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:22,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61525114] [2023-12-15 17:54:22,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:22,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:54:22,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:22,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61525114] [2023-12-15 17:54:22,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61525114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:22,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:22,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:54:22,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852170349] [2023-12-15 17:54:22,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:22,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:54:22,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:22,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:54:22,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:54:22,866 INFO L87 Difference]: Start difference. First operand 4344 states and 6916 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:23,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:23,233 INFO L93 Difference]: Finished difference Result 18132 states and 26906 transitions. [2023-12-15 17:54:23,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:54:23,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 [2023-12-15 17:54:23,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:23,288 INFO L225 Difference]: With dead ends: 18132 [2023-12-15 17:54:23,288 INFO L226 Difference]: Without dead ends: 16146 [2023-12-15 17:54:23,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:54:23,299 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6293 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:23,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3541 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:54:23,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16146 states. [2023-12-15 17:54:23,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16146 to 6744. [2023-12-15 17:54:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6742 states have (on average 1.5360427172945714) internal successors, (10356), 6743 states have internal predecessors, (10356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:23,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 10356 transitions. [2023-12-15 17:54:23,563 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 10356 transitions. Word has length 73 [2023-12-15 17:54:23,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:23,563 INFO L495 AbstractCegarLoop]: Abstraction has 6744 states and 10356 transitions. [2023-12-15 17:54:23,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:23,564 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 10356 transitions. [2023-12-15 17:54:23,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 17:54:23,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:23,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:23,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:54:23,566 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:23,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:23,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1518818929, now seen corresponding path program 1 times [2023-12-15 17:54:23,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:23,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375490654] [2023-12-15 17:54:23,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:23,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 17:54:23,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:23,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375490654] [2023-12-15 17:54:23,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375490654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:23,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:23,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:54:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340855778] [2023-12-15 17:54:23,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:23,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:54:23,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:23,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:54:23,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:54:23,757 INFO L87 Difference]: Start difference. First operand 6744 states and 10356 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:24,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:24,155 INFO L93 Difference]: Finished difference Result 20932 states and 30938 transitions. [2023-12-15 17:54:24,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:54:24,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 [2023-12-15 17:54:24,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:24,198 INFO L225 Difference]: With dead ends: 20932 [2023-12-15 17:54:24,198 INFO L226 Difference]: Without dead ends: 18130 [2023-12-15 17:54:24,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:54:24,211 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6338 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:24,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3574 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:54:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18130 states. [2023-12-15 17:54:24,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18130 to 10536. [2023-12-15 17:54:24,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10536 states, 10534 states have (on average 1.49800645528764) internal successors, (15780), 10535 states have internal predecessors, (15780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:24,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 15780 transitions. [2023-12-15 17:54:24,569 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 15780 transitions. Word has length 73 [2023-12-15 17:54:24,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:24,569 INFO L495 AbstractCegarLoop]: Abstraction has 10536 states and 15780 transitions. [2023-12-15 17:54:24,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 15780 transitions. [2023-12-15 17:54:24,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 17:54:24,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:24,571 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:24,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 17:54:24,572 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:24,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash 893162865, now seen corresponding path program 1 times [2023-12-15 17:54:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:24,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173390909] [2023-12-15 17:54:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:24,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 17:54:24,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:24,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173390909] [2023-12-15 17:54:24,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173390909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:24,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:24,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:54:24,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683271865] [2023-12-15 17:54:24,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:24,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:54:24,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:24,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:54:24,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:54:24,705 INFO L87 Difference]: Start difference. First operand 10536 states and 15780 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:25,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:25,354 INFO L93 Difference]: Finished difference Result 23732 states and 34954 transitions. [2023-12-15 17:54:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:54:25,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-15 17:54:25,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:25,402 INFO L225 Difference]: With dead ends: 23732 [2023-12-15 17:54:25,402 INFO L226 Difference]: Without dead ends: 20930 [2023-12-15 17:54:25,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:54:25,417 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6383 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6383 SdHoareTripleChecker+Valid, 3539 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:25,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6383 Valid, 3539 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 17:54:25,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20930 states. [2023-12-15 17:54:25,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20930 to 13336. [2023-12-15 17:54:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13336 states, 13334 states have (on average 1.4846257687115645) internal successors, (19796), 13335 states have internal predecessors, (19796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13336 states to 13336 states and 19796 transitions. [2023-12-15 17:54:25,848 INFO L78 Accepts]: Start accepts. Automaton has 13336 states and 19796 transitions. Word has length 73 [2023-12-15 17:54:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:25,848 INFO L495 AbstractCegarLoop]: Abstraction has 13336 states and 19796 transitions. [2023-12-15 17:54:25,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 13336 states and 19796 transitions. [2023-12-15 17:54:25,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 17:54:25,851 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:25,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:25,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 17:54:25,851 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:25,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1781896305, now seen corresponding path program 1 times [2023-12-15 17:54:25,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:25,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111718443] [2023-12-15 17:54:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:25,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 17:54:25,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:25,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111718443] [2023-12-15 17:54:25,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111718443] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:25,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:25,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:54:25,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393750908] [2023-12-15 17:54:25,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:25,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:54:25,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:25,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:54:25,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:54:25,971 INFO L87 Difference]: Start difference. First operand 13336 states and 19796 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2023-12-15 17:54:26,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:26,577 INFO L93 Difference]: Finished difference Result 26532 states and 38970 transitions. [2023-12-15 17:54:26,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:54:26,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 73 [2023-12-15 17:54:26,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:26,628 INFO L225 Difference]: With dead ends: 26532 [2023-12-15 17:54:26,628 INFO L226 Difference]: Without dead ends: 23730 [2023-12-15 17:54:26,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:54:26,641 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6339 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6339 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:26,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6339 Valid, 3590 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:54:26,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23730 states. [2023-12-15 17:54:27,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23730 to 16136. [2023-12-15 17:54:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16136 states, 16134 states have (on average 1.4758894260567745) internal successors, (23812), 16135 states have internal predecessors, (23812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16136 states to 16136 states and 23812 transitions. [2023-12-15 17:54:27,157 INFO L78 Accepts]: Start accepts. Automaton has 16136 states and 23812 transitions. Word has length 73 [2023-12-15 17:54:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:27,157 INFO L495 AbstractCegarLoop]: Abstraction has 16136 states and 23812 transitions. [2023-12-15 17:54:27,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2023-12-15 17:54:27,157 INFO L276 IsEmpty]: Start isEmpty. Operand 16136 states and 23812 transitions. [2023-12-15 17:54:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 17:54:27,160 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:27,160 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:27,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 17:54:27,160 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:27,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:27,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1478874993, now seen corresponding path program 1 times [2023-12-15 17:54:27,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:27,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996578772] [2023-12-15 17:54:27,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:27,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 17:54:27,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:27,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996578772] [2023-12-15 17:54:27,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996578772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:27,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:27,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 17:54:27,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542951868] [2023-12-15 17:54:27,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:27,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 17:54:27,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 17:54:27,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:54:27,370 INFO L87 Difference]: Start difference. First operand 16136 states and 23812 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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) [2023-12-15 17:54:27,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:27,970 INFO L93 Difference]: Finished difference Result 29332 states and 42986 transitions. [2023-12-15 17:54:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:54:27,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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 73 [2023-12-15 17:54:27,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:28,029 INFO L225 Difference]: With dead ends: 29332 [2023-12-15 17:54:28,030 INFO L226 Difference]: Without dead ends: 26530 [2023-12-15 17:54:28,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:54:28,043 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 6295 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6295 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:28,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6295 Valid, 3651 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:54:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26530 states. [2023-12-15 17:54:28,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26530 to 18936. [2023-12-15 17:54:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.469736981092215) internal successors, (27828), 18935 states have internal predecessors, (27828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27828 transitions. [2023-12-15 17:54:28,689 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27828 transitions. Word has length 73 [2023-12-15 17:54:28,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:28,689 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27828 transitions. [2023-12-15 17:54:28,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 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) [2023-12-15 17:54:28,690 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27828 transitions. [2023-12-15 17:54:28,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 17:54:28,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:28,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:28,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 17:54:28,692 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:28,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:28,693 INFO L85 PathProgramCache]: Analyzing trace with hash -499388753, now seen corresponding path program 1 times [2023-12-15 17:54:28,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:28,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715978723] [2023-12-15 17:54:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:28,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:28,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:28,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:28,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715978723] [2023-12-15 17:54:28,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715978723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:28,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:28,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:28,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522564314] [2023-12-15 17:54:28,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:28,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:28,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:28,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:28,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:28,789 INFO L87 Difference]: Start difference. First operand 18936 states and 27828 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:29,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:29,189 INFO L93 Difference]: Finished difference Result 36332 states and 52806 transitions. [2023-12-15 17:54:29,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:29,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-15 17:54:29,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:29,224 INFO L225 Difference]: With dead ends: 36332 [2023-12-15 17:54:29,225 INFO L226 Difference]: Without dead ends: 18938 [2023-12-15 17:54:29,248 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 [2023-12-15 17:54:29,248 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 45 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:29,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3097 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:29,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18938 states. [2023-12-15 17:54:29,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18938 to 18936. [2023-12-15 17:54:30,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.4541037287419456) internal successors, (27532), 18935 states have internal predecessors, (27532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:30,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27532 transitions. [2023-12-15 17:54:30,059 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27532 transitions. Word has length 74 [2023-12-15 17:54:30,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:30,059 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27532 transitions. [2023-12-15 17:54:30,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:30,060 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27532 transitions. [2023-12-15 17:54:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-15 17:54:30,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:30,062 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:30,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 17:54:30,062 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:30,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:30,063 INFO L85 PathProgramCache]: Analyzing trace with hash -578911559, now seen corresponding path program 1 times [2023-12-15 17:54:30,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:30,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283377066] [2023-12-15 17:54:30,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:30,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:30,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:30,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283377066] [2023-12-15 17:54:30,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283377066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:30,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:30,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:30,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101742055] [2023-12-15 17:54:30,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:30,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:30,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:30,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:30,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:30,162 INFO L87 Difference]: Start difference. First operand 18936 states and 27532 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) [2023-12-15 17:54:30,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:30,352 INFO L93 Difference]: Finished difference Result 25406 states and 36809 transitions. [2023-12-15 17:54:30,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:30,355 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 [2023-12-15 17:54:30,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:30,370 INFO L225 Difference]: With dead ends: 25406 [2023-12-15 17:54:30,370 INFO L226 Difference]: Without dead ends: 8012 [2023-12-15 17:54:30,387 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 [2023-12-15 17:54:30,388 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 39 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:30,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3094 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2023-12-15 17:54:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 8005. [2023-12-15 17:54:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8005 states, 8003 states have (on average 1.5015619142821441) internal successors, (12017), 8004 states have internal predecessors, (12017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8005 states to 8005 states and 12017 transitions. [2023-12-15 17:54:30,584 INFO L78 Accepts]: Start accepts. Automaton has 8005 states and 12017 transitions. Word has length 75 [2023-12-15 17:54:30,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:30,584 INFO L495 AbstractCegarLoop]: Abstraction has 8005 states and 12017 transitions. [2023-12-15 17:54:30,584 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) [2023-12-15 17:54:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 8005 states and 12017 transitions. [2023-12-15 17:54:30,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-15 17:54:30,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:30,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:30,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 17:54:30,586 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:30,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:30,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1341806013, now seen corresponding path program 1 times [2023-12-15 17:54:30,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:30,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505889399] [2023-12-15 17:54:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:30,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:30,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:30,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505889399] [2023-12-15 17:54:30,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505889399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:30,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:30,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:30,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838327704] [2023-12-15 17:54:30,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:30,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:30,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:30,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:30,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:30,707 INFO L87 Difference]: Start difference. First operand 8005 states and 12017 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:30,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:30,805 INFO L93 Difference]: Finished difference Result 11233 states and 16595 transitions. [2023-12-15 17:54:30,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:30,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-15 17:54:30,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:30,811 INFO L225 Difference]: With dead ends: 11233 [2023-12-15 17:54:30,812 INFO L226 Difference]: Without dead ends: 4783 [2023-12-15 17:54:30,816 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 [2023-12-15 17:54:30,817 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:30,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3073 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:30,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2023-12-15 17:54:30,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4781. [2023-12-15 17:54:30,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4779 states have (on average 1.5461393596986817) internal successors, (7389), 4780 states have internal predecessors, (7389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:30,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 7389 transitions. [2023-12-15 17:54:30,914 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 7389 transitions. Word has length 76 [2023-12-15 17:54:30,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:30,915 INFO L495 AbstractCegarLoop]: Abstraction has 4781 states and 7389 transitions. [2023-12-15 17:54:30,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:30,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 7389 transitions. [2023-12-15 17:54:30,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-15 17:54:30,916 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:30,916 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] [2023-12-15 17:54:30,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 17:54:30,917 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:30,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:30,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1967707723, now seen corresponding path program 1 times [2023-12-15 17:54:30,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:30,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284916018] [2023-12-15 17:54:30,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:30,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:30,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:30,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284916018] [2023-12-15 17:54:30,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284916018] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:30,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:30,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:30,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453649378] [2023-12-15 17:54:30,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:30,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:30,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:30,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:30,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:30,996 INFO L87 Difference]: Start difference. First operand 4781 states and 7389 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:31,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:31,058 INFO L93 Difference]: Finished difference Result 6397 states and 9653 transitions. [2023-12-15 17:54:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:31,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-15 17:54:31,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:31,062 INFO L225 Difference]: With dead ends: 6397 [2023-12-15 17:54:31,062 INFO L226 Difference]: Without dead ends: 3171 [2023-12-15 17:54:31,068 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 [2023-12-15 17:54:31,069 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 38 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:31,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3058 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:31,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2023-12-15 17:54:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3169. [2023-12-15 17:54:31,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.6106725607830754) internal successors, (5101), 3168 states have internal predecessors, (5101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5101 transitions. [2023-12-15 17:54:31,137 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5101 transitions. Word has length 78 [2023-12-15 17:54:31,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:31,137 INFO L495 AbstractCegarLoop]: Abstraction has 3169 states and 5101 transitions. [2023-12-15 17:54:31,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:31,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5101 transitions. [2023-12-15 17:54:31,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 17:54:31,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:31,139 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:31,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 17:54:31,139 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:31,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:31,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1884532647, now seen corresponding path program 1 times [2023-12-15 17:54:31,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:31,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431501395] [2023-12-15 17:54:31,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:31,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:31,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:31,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431501395] [2023-12-15 17:54:31,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431501395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:54:31,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:54:31,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:54:31,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052125559] [2023-12-15 17:54:31,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:54:31,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:54:31,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:31,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:54:31,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:54:31,251 INFO L87 Difference]: Start difference. First operand 3169 states and 5101 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:31,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:31,292 INFO L93 Difference]: Finished difference Result 3979 states and 6221 transitions. [2023-12-15 17:54:31,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:54:31,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-15 17:54:31,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:31,296 INFO L225 Difference]: With dead ends: 3979 [2023-12-15 17:54:31,296 INFO L226 Difference]: Without dead ends: 2365 [2023-12-15 17:54:31,298 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 [2023-12-15 17:54:31,298 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 35 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:31,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:31,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-12-15 17:54:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2023-12-15 17:54:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2361 states have (on average 1.6814908936891149) internal successors, (3970), 2362 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3970 transitions. [2023-12-15 17:54:31,340 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3970 transitions. Word has length 80 [2023-12-15 17:54:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:31,340 INFO L495 AbstractCegarLoop]: Abstraction has 2363 states and 3970 transitions. [2023-12-15 17:54:31,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3970 transitions. [2023-12-15 17:54:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-15 17:54:31,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:31,341 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:31,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 17:54:31,341 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:31,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:31,342 INFO L85 PathProgramCache]: Analyzing trace with hash 390177767, now seen corresponding path program 1 times [2023-12-15 17:54:31,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:31,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403242933] [2023-12-15 17:54:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:31,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:54:31,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:31,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403242933] [2023-12-15 17:54:31,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403242933] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:54:31,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492052751] [2023-12-15 17:54:31,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:31,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:54:31,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:54:31,473 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) [2023-12-15 17:54:31,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 17:54:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:31,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 17:54:31,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:54:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:54:31,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:54:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:54:32,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492052751] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:54:32,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:54:32,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-12-15 17:54:32,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533664346] [2023-12-15 17:54:32,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:54:32,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-15 17:54:32,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:32,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-15 17:54:32,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:54:32,115 INFO L87 Difference]: Start difference. First operand 2363 states and 3970 transitions. Second operand has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:32,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:32,293 INFO L93 Difference]: Finished difference Result 5024 states and 7550 transitions. [2023-12-15 17:54:32,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:54:32,293 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 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 82 [2023-12-15 17:54:32,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:32,298 INFO L225 Difference]: With dead ends: 5024 [2023-12-15 17:54:32,298 INFO L226 Difference]: Without dead ends: 4216 [2023-12-15 17:54:32,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-12-15 17:54:32,301 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 3042 mSDsluCounter, 3250 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 4799 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:32,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3042 Valid, 4799 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:54:32,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2023-12-15 17:54:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 4147. [2023-12-15 17:54:32,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 4145 states have (on average 1.5097708082026537) internal successors, (6258), 4146 states have internal predecessors, (6258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 6258 transitions. [2023-12-15 17:54:32,426 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 6258 transitions. Word has length 82 [2023-12-15 17:54:32,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:32,426 INFO L495 AbstractCegarLoop]: Abstraction has 4147 states and 6258 transitions. [2023-12-15 17:54:32,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.444444444444443) internal successors, (229), 9 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:32,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 6258 transitions. [2023-12-15 17:54:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-15 17:54:32,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:32,427 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:32,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 17:54:32,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-15 17:54:32,632 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:32,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:32,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1286852559, now seen corresponding path program 1 times [2023-12-15 17:54:32,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:32,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547856494] [2023-12-15 17:54:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:32,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:33,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:33,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547856494] [2023-12-15 17:54:33,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547856494] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:54:33,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980603736] [2023-12-15 17:54:33,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:33,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:54:33,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:54:33,605 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) [2023-12-15 17:54:33,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 17:54:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:33,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:54:33,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:54:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:34,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:54:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:35,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980603736] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:54:35,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:54:35,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 12] total 31 [2023-12-15 17:54:35,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600676300] [2023-12-15 17:54:35,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:54:35,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-15 17:54:35,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:35,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-15 17:54:35,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2023-12-15 17:54:35,502 INFO L87 Difference]: Start difference. First operand 4147 states and 6258 transitions. Second operand has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:38,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:38,665 INFO L93 Difference]: Finished difference Result 15170 states and 20414 transitions. [2023-12-15 17:54:38,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-15 17:54:38,666 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-12-15 17:54:38,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:38,677 INFO L225 Difference]: With dead ends: 15170 [2023-12-15 17:54:38,677 INFO L226 Difference]: Without dead ends: 12673 [2023-12-15 17:54:38,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=911, Invalid=3781, Unknown=0, NotChecked=0, Total=4692 [2023-12-15 17:54:38,682 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 23790 mSDsluCounter, 10875 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23790 SdHoareTripleChecker+Valid, 12373 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:38,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23790 Valid, 12373 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 17:54:38,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12673 states. [2023-12-15 17:54:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12673 to 11823. [2023-12-15 17:54:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11823 states, 11821 states have (on average 1.3660434819389222) internal successors, (16148), 11822 states have internal predecessors, (16148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11823 states to 11823 states and 16148 transitions. [2023-12-15 17:54:39,043 INFO L78 Accepts]: Start accepts. Automaton has 11823 states and 16148 transitions. Word has length 83 [2023-12-15 17:54:39,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:39,044 INFO L495 AbstractCegarLoop]: Abstraction has 11823 states and 16148 transitions. [2023-12-15 17:54:39,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.32258064516129) internal successors, (227), 31 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:39,044 INFO L276 IsEmpty]: Start isEmpty. Operand 11823 states and 16148 transitions. [2023-12-15 17:54:39,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-15 17:54:39,045 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:39,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:39,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 17:54:39,248 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,SelfDestructingSolverStorable23 [2023-12-15 17:54:39,248 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:39,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash 337107919, now seen corresponding path program 1 times [2023-12-15 17:54:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:39,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220205674] [2023-12-15 17:54:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:39,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:39,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:39,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220205674] [2023-12-15 17:54:39,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220205674] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:54:39,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565246492] [2023-12-15 17:54:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:39,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:54:39,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:54:39,641 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) [2023-12-15 17:54:39,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 17:54:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:39,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:54:39,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:54:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:40,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:54:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:41,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565246492] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:54:41,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:54:41,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-15 17:54:41,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179993154] [2023-12-15 17:54:41,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:54:41,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-15 17:54:41,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:41,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-15 17:54:41,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-12-15 17:54:41,188 INFO L87 Difference]: Start difference. First operand 11823 states and 16148 transitions. Second operand has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:42,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:42,115 INFO L93 Difference]: Finished difference Result 22791 states and 30221 transitions. [2023-12-15 17:54:42,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 17:54:42,115 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-12-15 17:54:42,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:42,127 INFO L225 Difference]: With dead ends: 22791 [2023-12-15 17:54:42,127 INFO L226 Difference]: Without dead ends: 12961 [2023-12-15 17:54:42,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2023-12-15 17:54:42,132 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 16394 mSDsluCounter, 7885 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16394 SdHoareTripleChecker+Valid, 9395 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:42,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16394 Valid, 9395 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 17:54:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12961 states. [2023-12-15 17:54:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12961 to 11601. [2023-12-15 17:54:42,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11601 states, 11599 states have (on average 1.356237606690232) internal successors, (15731), 11600 states have internal predecessors, (15731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11601 states to 11601 states and 15731 transitions. [2023-12-15 17:54:42,439 INFO L78 Accepts]: Start accepts. Automaton has 11601 states and 15731 transitions. Word has length 83 [2023-12-15 17:54:42,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:42,439 INFO L495 AbstractCegarLoop]: Abstraction has 11601 states and 15731 transitions. [2023-12-15 17:54:42,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.714285714285714) internal successors, (216), 28 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:42,439 INFO L276 IsEmpty]: Start isEmpty. Operand 11601 states and 15731 transitions. [2023-12-15 17:54:42,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-15 17:54:42,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:42,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:42,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 17:54:42,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:54:42,648 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:42,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:42,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1141151537, now seen corresponding path program 1 times [2023-12-15 17:54:42,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:42,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342674530] [2023-12-15 17:54:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:42,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:43,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:43,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:43,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342674530] [2023-12-15 17:54:43,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342674530] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:54:43,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728532373] [2023-12-15 17:54:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:43,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:54:43,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:54:43,011 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) [2023-12-15 17:54:43,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 17:54:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:43,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:54:43,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:54:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:43,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:54:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:44,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728532373] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:54:44,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:54:44,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-15 17:54:44,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580782477] [2023-12-15 17:54:44,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:54:44,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-15 17:54:44,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:44,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-15 17:54:44,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-15 17:54:44,439 INFO L87 Difference]: Start difference. First operand 11601 states and 15731 transitions. Second operand has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:45,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:45,573 INFO L93 Difference]: Finished difference Result 32144 states and 41993 transitions. [2023-12-15 17:54:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 17:54:45,573 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-12-15 17:54:45,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:45,597 INFO L225 Difference]: With dead ends: 32144 [2023-12-15 17:54:45,597 INFO L226 Difference]: Without dead ends: 23271 [2023-12-15 17:54:45,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-15 17:54:45,607 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 10719 mSDsluCounter, 7890 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10719 SdHoareTripleChecker+Valid, 9419 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:45,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10719 Valid, 9419 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 17:54:45,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23271 states. [2023-12-15 17:54:46,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23271 to 21931. [2023-12-15 17:54:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21931 states, 21929 states have (on average 1.3072187514250535) internal successors, (28666), 21930 states have internal predecessors, (28666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:46,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21931 states to 21931 states and 28666 transitions. [2023-12-15 17:54:46,210 INFO L78 Accepts]: Start accepts. Automaton has 21931 states and 28666 transitions. Word has length 83 [2023-12-15 17:54:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:46,210 INFO L495 AbstractCegarLoop]: Abstraction has 21931 states and 28666 transitions. [2023-12-15 17:54:46,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.285714285714286) internal successors, (204), 28 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:46,210 INFO L276 IsEmpty]: Start isEmpty. Operand 21931 states and 28666 transitions. [2023-12-15 17:54:46,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-15 17:54:46,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:46,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:46,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 17:54:46,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-15 17:54:46,414 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:46,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:46,415 INFO L85 PathProgramCache]: Analyzing trace with hash -97270267, now seen corresponding path program 1 times [2023-12-15 17:54:46,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:46,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803662715] [2023-12-15 17:54:46,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:46,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:46,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:54:46,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803662715] [2023-12-15 17:54:46,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803662715] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:54:46,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198432930] [2023-12-15 17:54:46,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:46,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:54:46,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:54:46,779 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) [2023-12-15 17:54:46,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 17:54:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:54:46,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:54:46,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:54:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:47,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:54:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:54:48,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198432930] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:54:48,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:54:48,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-15 17:54:48,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382011485] [2023-12-15 17:54:48,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:54:48,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-15 17:54:48,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:54:48,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-15 17:54:48,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2023-12-15 17:54:48,425 INFO L87 Difference]: Start difference. First operand 21931 states and 28666 transitions. Second operand has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:51,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:54:51,926 INFO L93 Difference]: Finished difference Result 82393 states and 104822 transitions. [2023-12-15 17:54:51,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-15 17:54:51,927 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-12-15 17:54:51,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:54:52,001 INFO L225 Difference]: With dead ends: 82393 [2023-12-15 17:54:52,002 INFO L226 Difference]: Without dead ends: 62682 [2023-12-15 17:54:52,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=937, Invalid=3485, Unknown=0, NotChecked=0, Total=4422 [2023-12-15 17:54:52,021 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 17547 mSDsluCounter, 8145 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17547 SdHoareTripleChecker+Valid, 9655 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:54:52,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17547 Valid, 9655 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 17:54:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62682 states. [2023-12-15 17:54:53,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62682 to 59370. [2023-12-15 17:54:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59370 states, 59368 states have (on average 1.2584725778197008) internal successors, (74713), 59369 states have internal predecessors, (74713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:54,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59370 states to 59370 states and 74713 transitions. [2023-12-15 17:54:54,001 INFO L78 Accepts]: Start accepts. Automaton has 59370 states and 74713 transitions. Word has length 84 [2023-12-15 17:54:54,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:54:54,002 INFO L495 AbstractCegarLoop]: Abstraction has 59370 states and 74713 transitions. [2023-12-15 17:54:54,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.612903225806452) internal successors, (236), 31 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:54:54,002 INFO L276 IsEmpty]: Start isEmpty. Operand 59370 states and 74713 transitions. [2023-12-15 17:54:54,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 17:54:54,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:54:54,004 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:54,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 17:54:54,205 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,SelfDestructingSolverStorable26 [2023-12-15 17:54:54,206 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:54:54,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:54:54,206 INFO L85 PathProgramCache]: Analyzing trace with hash -237028743, now seen corresponding path program 1 times [2023-12-15 17:54:54,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:54:54,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119077672] [2023-12-15 17:54:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:54:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:54:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-15 17:54:56,587 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:54:56,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 17:54:56,587 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 87 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. [2023-12-15 17:54:56,588 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:54:56,591 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:54:56,592 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:54:56,593 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:54:56,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:54:56 BoogieIcfgContainer [2023-12-15 17:54:56,595 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:54:56,596 INFO L158 Benchmark]: Toolchain (without parser) took 47705.32ms. Allocated memory was 188.7MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 120.4MB in the beginning and 863.3MB in the end (delta: -742.9MB). Peak memory consumption was 727.6MB. Max. memory is 8.0GB. [2023-12-15 17:54:56,596 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 188.7MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:54:56,596 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1649.68ms. Allocated memory was 188.7MB in the beginning and 298.8MB in the end (delta: 110.1MB). Free memory was 120.4MB in the beginning and 113.0MB in the end (delta: 7.4MB). Peak memory consumption was 118.9MB. Max. memory is 8.0GB. [2023-12-15 17:54:56,596 INFO L158 Benchmark]: Boogie Procedure Inliner took 339.32ms. Allocated memory is still 298.8MB. Free memory was 113.0MB in the beginning and 188.5MB in the end (delta: -75.5MB). Peak memory consumption was 45.6MB. Max. memory is 8.0GB. [2023-12-15 17:54:56,596 INFO L158 Benchmark]: Boogie Preprocessor took 604.00ms. Allocated memory was 298.8MB in the beginning and 536.9MB in the end (delta: 238.0MB). Free memory was 188.5MB in the beginning and 400.7MB in the end (delta: -212.2MB). Peak memory consumption was 65.7MB. Max. memory is 8.0GB. [2023-12-15 17:54:56,597 INFO L158 Benchmark]: RCFGBuilder took 4146.88ms. Allocated memory is still 536.9MB. Free memory was 400.7MB in the beginning and 250.4MB in the end (delta: 150.3MB). Peak memory consumption was 187.2MB. Max. memory is 8.0GB. [2023-12-15 17:54:56,597 INFO L158 Benchmark]: TraceAbstraction took 40957.26ms. Allocated memory was 536.9MB in the beginning and 1.7GB in the end (delta: 1.1GB). Free memory was 249.9MB in the beginning and 863.3MB in the end (delta: -613.4MB). Peak memory consumption was 508.6MB. Max. memory is 8.0GB. [2023-12-15 17:54:56,598 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 188.7MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1649.68ms. Allocated memory was 188.7MB in the beginning and 298.8MB in the end (delta: 110.1MB). Free memory was 120.4MB in the beginning and 113.0MB in the end (delta: 7.4MB). Peak memory consumption was 118.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 339.32ms. Allocated memory is still 298.8MB. Free memory was 113.0MB in the beginning and 188.5MB in the end (delta: -75.5MB). Peak memory consumption was 45.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 604.00ms. Allocated memory was 298.8MB in the beginning and 536.9MB in the end (delta: 238.0MB). Free memory was 188.5MB in the beginning and 400.7MB in the end (delta: -212.2MB). Peak memory consumption was 65.7MB. Max. memory is 8.0GB. * RCFGBuilder took 4146.88ms. Allocated memory is still 536.9MB. Free memory was 400.7MB in the beginning and 250.4MB in the end (delta: 150.3MB). Peak memory consumption was 187.2MB. Max. memory is 8.0GB. * TraceAbstraction took 40957.26ms. Allocated memory was 536.9MB in the beginning and 1.7GB in the end (delta: 1.1GB). Free memory was 249.9MB in the beginning and 863.3MB in the end (delta: -613.4MB). Peak memory consumption was 508.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 435]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 435). Cancelled while NwaCegarLoop was analyzing trace of length 87 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - TimeoutResultAtElement [Line: 633]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 633). Cancelled while NwaCegarLoop was analyzing trace of length 87 with TraceHistMax 2,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 18 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 834 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 40.9s, OverallIterations: 28, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 17.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 128497 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128497 mSDsluCounter, 104263 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63538 mSDsCounter, 1234 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6582 IncrementalHoareTripleChecker+Invalid, 7816 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1234 mSolverCounterUnsat, 40725 mSDtfsCounter, 6582 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1103 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 304 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2855 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59370occurred in iteration=27, InterpolantAutomatonStates: 226, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.3s AutomataMinimizationTime, 27 MinimizatonAttempts, 47070 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 2166 NumberOfCodeBlocks, 2166 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2544 ConstructedInterpolants, 0 QuantifiedInterpolants, 23062 SizeOfPredicates, 23 NumberOfNonLiveVariables, 2092 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 37 InterpolantComputations, 22 PerfectInterpolantSequences, 267/366 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown