/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 12:31:43,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 12:31:43,364 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 12:31:43,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 12:31:43,368 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 12:31:43,389 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 12:31:43,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 12:31:43,389 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 12:31:43,390 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 12:31:43,393 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 12:31:43,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 12:31:43,393 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 12:31:43,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 12:31:43,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 12:31:43,395 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 12:31:43,395 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 12:31:43,395 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 12:31:43,395 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 12:31:43,395 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 12:31:43,396 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 12:31:43,396 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 12:31:43,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 12:31:43,396 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 12:31:43,396 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 12:31:43,397 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 12:31:43,397 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 12:31:43,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 12:31:43,397 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 12:31:43,397 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 12:31:43,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 12:31:43,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 12:31:43,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 12:31:43,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:31:43,399 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 12:31:43,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 12:31:43,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 12:31:43,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 12:31:43,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 12:31:43,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 12:31:43,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 12:31:43,399 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 12:31:43,400 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 12:31:43,400 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 12:31:43,400 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 12:31:43,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 12:31:43,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 12:31:43,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 12:31:43,605 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 12:31:43,605 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 12:31:43,606 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c [2023-12-20 12:31:44,604 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 12:31:44,912 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 12:31:44,913 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c [2023-12-20 12:31:44,936 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a208ef5a8/7582503901584fe3b6f6386024473a13/FLAGffd2691dc [2023-12-20 12:31:44,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a208ef5a8/7582503901584fe3b6f6386024473a13 [2023-12-20 12:31:44,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 12:31:44,949 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 12:31:44,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 12:31:44,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 12:31:44,954 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 12:31:44,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:31:44" (1/1) ... [2023-12-20 12:31:44,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f318334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:44, skipping insertion in model container [2023-12-20 12:31:44,956 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:31:44" (1/1) ... [2023-12-20 12:31:45,040 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 12:31:45,290 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.3.ufo.BOUNDED-6.pals+Problem12_label04.c[6354,6367] [2023-12-20 12:31:45,354 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.3.ufo.BOUNDED-6.pals+Problem12_label04.c[13415,13428] [2023-12-20 12:31:45,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:31:45,792 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 12:31:45,822 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.3.ufo.BOUNDED-6.pals+Problem12_label04.c[6354,6367] [2023-12-20 12:31:45,832 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.3.ufo.BOUNDED-6.pals+Problem12_label04.c[13415,13428] [2023-12-20 12:31:46,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:31:46,179 INFO L206 MainTranslator]: Completed translation [2023-12-20 12:31:46,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46 WrapperNode [2023-12-20 12:31:46,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 12:31:46,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 12:31:46,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 12:31:46,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 12:31:46,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46" (1/1) ... [2023-12-20 12:31:46,216 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46" (1/1) ... [2023-12-20 12:31:46,417 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4980 [2023-12-20 12:31:46,418 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 12:31:46,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 12:31:46,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 12:31:46,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 12:31:46,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46" (1/1) ... [2023-12-20 12:31:46,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46" (1/1) ... [2023-12-20 12:31:46,453 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46" (1/1) ... [2023-12-20 12:31:46,517 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 12:31:46,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46" (1/1) ... [2023-12-20 12:31:46,517 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46" (1/1) ... [2023-12-20 12:31:46,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46" (1/1) ... [2023-12-20 12:31:46,673 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46" (1/1) ... [2023-12-20 12:31:46,697 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46" (1/1) ... [2023-12-20 12:31:46,710 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46" (1/1) ... [2023-12-20 12:31:46,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 12:31:46,750 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 12:31:46,750 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 12:31:46,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 12:31:46,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46" (1/1) ... [2023-12-20 12:31:46,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:31:46,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:31:46,772 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 12:31:46,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 12:31:46,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 12:31:46,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 12:31:46,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 12:31:46,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 12:31:46,886 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 12:31:46,887 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 12:31:49,764 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 12:31:49,804 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 12:31:49,805 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 12:31:49,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:31:49 BoogieIcfgContainer [2023-12-20 12:31:49,805 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 12:31:49,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 12:31:49,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 12:31:49,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 12:31:49,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:31:44" (1/3) ... [2023-12-20 12:31:49,809 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534f49a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:31:49, skipping insertion in model container [2023-12-20 12:31:49,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:46" (2/3) ... [2023-12-20 12:31:49,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534f49a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:31:49, skipping insertion in model container [2023-12-20 12:31:49,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:31:49" (3/3) ... [2023-12-20 12:31:49,811 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label04.c [2023-12-20 12:31:49,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 12:31:49,822 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 12:31:49,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 12:31:49,866 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;@c413bc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 12:31:49,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 12:31:49,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:49,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:31:49,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:49,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:49,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:49,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:49,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1841440842, now seen corresponding path program 1 times [2023-12-20 12:31:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:49,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313821200] [2023-12-20 12:31:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:49,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:50,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:50,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313821200] [2023-12-20 12:31:50,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313821200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:50,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:50,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:31:50,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976922739] [2023-12-20 12:31:50,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:50,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 12:31:50,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:50,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 12:31:50,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 12:31:50,031 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:50,089 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2023-12-20 12:31:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 12:31:50,091 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-20 12:31:50,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:50,103 INFO L225 Difference]: With dead ends: 1594 [2023-12-20 12:31:50,103 INFO L226 Difference]: Without dead ends: 803 [2023-12-20 12:31:50,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 12:31:50,109 INFO L413 NwaCegarLoop]: 1521 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, 1521 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:50,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-20 12:31:50,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-12-20 12:31:50,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-12-20 12:31:50,156 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-12-20 12:31:50,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:50,156 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-12-20 12:31:50,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,156 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-12-20 12:31:50,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:31:50,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:50,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:50,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 12:31:50,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:50,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:50,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1254634828, now seen corresponding path program 1 times [2023-12-20 12:31:50,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:50,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077181639] [2023-12-20 12:31:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:50,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:50,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:50,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077181639] [2023-12-20 12:31:50,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077181639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:50,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:50,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:31:50,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769436331] [2023-12-20 12:31:50,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:50,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:31:50,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:50,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:31:50,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:31:50,307 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:50,366 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2023-12-20 12:31:50,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:31:50,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-12-20 12:31:50,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:50,375 INFO L225 Difference]: With dead ends: 864 [2023-12-20 12:31:50,375 INFO L226 Difference]: Without dead ends: 832 [2023-12-20 12:31:50,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:31:50,377 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:50,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:50,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-20 12:31:50,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2023-12-20 12:31:50,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-12-20 12:31:50,392 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-12-20 12:31:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:50,392 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-12-20 12:31:50,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-12-20 12:31:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-20 12:31:50,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:50,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:50,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 12:31:50,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:50,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:50,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1671741616, now seen corresponding path program 1 times [2023-12-20 12:31:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:50,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120446050] [2023-12-20 12:31:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:50,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:50,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:50,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120446050] [2023-12-20 12:31:50,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120446050] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:50,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:50,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:31:50,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85620504] [2023-12-20 12:31:50,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:50,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:31:50,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:50,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:31:50,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:31:50,499 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:50,607 INFO L93 Difference]: Finished difference Result 977 states and 1781 transitions. [2023-12-20 12:31:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 12:31:50,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-12-20 12:31:50,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:50,610 INFO L225 Difference]: With dead ends: 977 [2023-12-20 12:31:50,610 INFO L226 Difference]: Without dead ends: 948 [2023-12-20 12:31:50,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 12:31:50,612 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:50,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 12:31:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-12-20 12:31:50,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 830. [2023-12-20 12:31:50,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8695652173913044) internal successors, (1548), 829 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1548 transitions. [2023-12-20 12:31:50,627 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1548 transitions. Word has length 32 [2023-12-20 12:31:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:50,627 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1548 transitions. [2023-12-20 12:31:50,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,627 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1548 transitions. [2023-12-20 12:31:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:31:50,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:50,629 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] [2023-12-20 12:31:50,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 12:31:50,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:50,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:50,630 INFO L85 PathProgramCache]: Analyzing trace with hash -349537184, now seen corresponding path program 1 times [2023-12-20 12:31:50,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:50,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520059192] [2023-12-20 12:31:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:50,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:50,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:50,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520059192] [2023-12-20 12:31:50,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520059192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:50,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:50,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:50,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039388038] [2023-12-20 12:31:50,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:50,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:50,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:50,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:50,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:50,719 INFO L87 Difference]: Start difference. First operand 830 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:50,743 INFO L93 Difference]: Finished difference Result 931 states and 1707 transitions. [2023-12-20 12:31:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:50,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-20 12:31:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:50,746 INFO L225 Difference]: With dead ends: 931 [2023-12-20 12:31:50,746 INFO L226 Difference]: Without dead ends: 875 [2023-12-20 12:31:50,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:50,753 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:50,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:50,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-20 12:31:50,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-20 12:31:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8530424799081515) internal successors, (1614), 872 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1614 transitions. [2023-12-20 12:31:50,770 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1614 transitions. Word has length 34 [2023-12-20 12:31:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:50,770 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1614 transitions. [2023-12-20 12:31:50,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1614 transitions. [2023-12-20 12:31:50,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:31:50,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:50,774 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] [2023-12-20 12:31:50,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 12:31:50,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:50,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:50,775 INFO L85 PathProgramCache]: Analyzing trace with hash -347392232, now seen corresponding path program 1 times [2023-12-20 12:31:50,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:50,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177279957] [2023-12-20 12:31:50,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:50,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:50,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:50,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177279957] [2023-12-20 12:31:50,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177279957] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:50,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:50,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:31:50,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192401669] [2023-12-20 12:31:50,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:50,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:31:50,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:50,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:31:50,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:31:50,870 INFO L87 Difference]: Start difference. First operand 873 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:50,922 INFO L93 Difference]: Finished difference Result 974 states and 1770 transitions. [2023-12-20 12:31:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:31:50,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-12-20 12:31:50,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:50,926 INFO L225 Difference]: With dead ends: 974 [2023-12-20 12:31:50,926 INFO L226 Difference]: Without dead ends: 875 [2023-12-20 12:31:50,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 12:31:50,927 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 4411 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:50,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4411 Valid, 1579 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:50,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-20 12:31:50,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-20 12:31:50,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8507462686567164) internal successors, (1612), 872 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1612 transitions. [2023-12-20 12:31:50,940 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1612 transitions. Word has length 34 [2023-12-20 12:31:50,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:50,940 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1612 transitions. [2023-12-20 12:31:50,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:50,941 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1612 transitions. [2023-12-20 12:31:50,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 12:31:50,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:50,941 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] [2023-12-20 12:31:50,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 12:31:50,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:50,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:50,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1987359035, now seen corresponding path program 1 times [2023-12-20 12:31:50,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:50,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043543045] [2023-12-20 12:31:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:50,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:51,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:51,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043543045] [2023-12-20 12:31:51,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043543045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:51,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:51,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:31:51,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555352911] [2023-12-20 12:31:51,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:51,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:31:51,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:51,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:31:51,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:31:51,026 INFO L87 Difference]: Start difference. First operand 873 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:51,054 INFO L93 Difference]: Finished difference Result 881 states and 1621 transitions. [2023-12-20 12:31:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:31:51,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-12-20 12:31:51,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:51,057 INFO L225 Difference]: With dead ends: 881 [2023-12-20 12:31:51,057 INFO L226 Difference]: Without dead ends: 879 [2023-12-20 12:31:51,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:31:51,058 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:51,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-12-20 12:31:51,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2023-12-20 12:31:51,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8457142857142856) internal successors, (1615), 876 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1615 transitions. [2023-12-20 12:31:51,071 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1615 transitions. Word has length 35 [2023-12-20 12:31:51,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:51,071 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1615 transitions. [2023-12-20 12:31:51,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,072 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1615 transitions. [2023-12-20 12:31:51,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:31:51,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:51,072 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] [2023-12-20 12:31:51,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 12:31:51,072 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:51,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:51,073 INFO L85 PathProgramCache]: Analyzing trace with hash 177158552, now seen corresponding path program 1 times [2023-12-20 12:31:51,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:51,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730921728] [2023-12-20 12:31:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:51,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:51,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:51,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730921728] [2023-12-20 12:31:51,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730921728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:51,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:51,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:51,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798269842] [2023-12-20 12:31:51,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:51,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:51,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:51,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:51,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:51,098 INFO L87 Difference]: Start difference. First operand 877 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:51,117 INFO L93 Difference]: Finished difference Result 991 states and 1788 transitions. [2023-12-20 12:31:51,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:51,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-20 12:31:51,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:51,120 INFO L225 Difference]: With dead ends: 991 [2023-12-20 12:31:51,120 INFO L226 Difference]: Without dead ends: 931 [2023-12-20 12:31:51,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:51,121 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:51,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:51,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-20 12:31:51,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2023-12-20 12:31:51,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.825242718446602) internal successors, (1692), 928 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1692 transitions. [2023-12-20 12:31:51,134 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1692 transitions. Word has length 36 [2023-12-20 12:31:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:51,135 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1692 transitions. [2023-12-20 12:31:51,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,135 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1692 transitions. [2023-12-20 12:31:51,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:31:51,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:51,135 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] [2023-12-20 12:31:51,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 12:31:51,136 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:51,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:51,136 INFO L85 PathProgramCache]: Analyzing trace with hash -448497512, now seen corresponding path program 1 times [2023-12-20 12:31:51,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:51,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384385794] [2023-12-20 12:31:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:51,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:51,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:51,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384385794] [2023-12-20 12:31:51,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384385794] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:51,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:51,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:51,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931874090] [2023-12-20 12:31:51,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:51,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:51,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:51,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:51,159 INFO L87 Difference]: Start difference. First operand 929 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:51,180 INFO L93 Difference]: Finished difference Result 1211 states and 2112 transitions. [2023-12-20 12:31:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:51,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-20 12:31:51,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:51,184 INFO L225 Difference]: With dead ends: 1211 [2023-12-20 12:31:51,184 INFO L226 Difference]: Without dead ends: 1058 [2023-12-20 12:31:51,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:51,185 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:51,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:51,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2023-12-20 12:31:51,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1056. [2023-12-20 12:31:51,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1054 states have (on average 1.777988614800759) internal successors, (1874), 1055 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1874 transitions. [2023-12-20 12:31:51,201 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1874 transitions. Word has length 36 [2023-12-20 12:31:51,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:51,201 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1874 transitions. [2023-12-20 12:31:51,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1874 transitions. [2023-12-20 12:31:51,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:31:51,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:51,202 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] [2023-12-20 12:31:51,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 12:31:51,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:51,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:51,202 INFO L85 PathProgramCache]: Analyzing trace with hash 440235928, now seen corresponding path program 1 times [2023-12-20 12:31:51,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:51,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680559799] [2023-12-20 12:31:51,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:51,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:51,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:51,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680559799] [2023-12-20 12:31:51,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680559799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:51,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:51,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:51,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808389393] [2023-12-20 12:31:51,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:51,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:51,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:51,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:51,228 INFO L87 Difference]: Start difference. First operand 1056 states and 1874 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:51,257 INFO L93 Difference]: Finished difference Result 1568 states and 2616 transitions. [2023-12-20 12:31:51,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:51,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-12-20 12:31:51,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:51,261 INFO L225 Difference]: With dead ends: 1568 [2023-12-20 12:31:51,261 INFO L226 Difference]: Without dead ends: 1288 [2023-12-20 12:31:51,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:51,262 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:51,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:51,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-12-20 12:31:51,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2023-12-20 12:31:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1284 states have (on average 1.705607476635514) internal successors, (2190), 1285 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2190 transitions. [2023-12-20 12:31:51,287 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2190 transitions. Word has length 36 [2023-12-20 12:31:51,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:51,288 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 2190 transitions. [2023-12-20 12:31:51,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2190 transitions. [2023-12-20 12:31:51,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:31:51,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:51,289 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] [2023-12-20 12:31:51,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 12:31:51,289 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:51,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:51,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1612908441, now seen corresponding path program 1 times [2023-12-20 12:31:51,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:51,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59938528] [2023-12-20 12:31:51,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:51,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:51,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:31:51,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:51,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59938528] [2023-12-20 12:31:51,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59938528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:51,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:51,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:31:51,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814689878] [2023-12-20 12:31:51,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:51,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:31:51,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:51,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:31:51,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:31:51,356 INFO L87 Difference]: Start difference. First operand 1286 states and 2190 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:51,445 INFO L93 Difference]: Finished difference Result 2794 states and 4342 transitions. [2023-12-20 12:31:51,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:31:51,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 12:31:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:51,452 INFO L225 Difference]: With dead ends: 2794 [2023-12-20 12:31:51,452 INFO L226 Difference]: Without dead ends: 2424 [2023-12-20 12:31:51,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:31:51,454 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 3031 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:51,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 3153 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:51,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2023-12-20 12:31:51,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1726. [2023-12-20 12:31:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.6299303944315546) internal successors, (2810), 1725 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2810 transitions. [2023-12-20 12:31:51,495 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2810 transitions. Word has length 50 [2023-12-20 12:31:51,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:51,495 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2810 transitions. [2023-12-20 12:31:51,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2810 transitions. [2023-12-20 12:31:51,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:31:51,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:51,496 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] [2023-12-20 12:31:51,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 12:31:51,497 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:51,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:51,497 INFO L85 PathProgramCache]: Analyzing trace with hash 2056402791, now seen corresponding path program 1 times [2023-12-20 12:31:51,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:51,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753702370] [2023-12-20 12:31:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:51,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 12:31:51,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:51,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753702370] [2023-12-20 12:31:51,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753702370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:51,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:51,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:31:51,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884919231] [2023-12-20 12:31:51,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:51,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:31:51,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:51,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:31:51,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:31:51,558 INFO L87 Difference]: Start difference. First operand 1726 states and 2810 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:51,636 INFO L93 Difference]: Finished difference Result 3302 states and 5062 transitions. [2023-12-20 12:31:51,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:31:51,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 12:31:51,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:51,643 INFO L225 Difference]: With dead ends: 3302 [2023-12-20 12:31:51,643 INFO L226 Difference]: Without dead ends: 2792 [2023-12-20 12:31:51,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:31:51,645 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 3035 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3035 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:51,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3035 Valid, 3130 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:51,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2023-12-20 12:31:51,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2418. [2023-12-20 12:31:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5653973509933774) internal successors, (3782), 2417 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3782 transitions. [2023-12-20 12:31:51,694 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3782 transitions. Word has length 50 [2023-12-20 12:31:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:51,695 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 3782 transitions. [2023-12-20 12:31:51,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3782 transitions. [2023-12-20 12:31:51,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:31:51,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:51,695 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] [2023-12-20 12:31:51,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 12:31:51,696 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:51,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:51,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1349831065, now seen corresponding path program 1 times [2023-12-20 12:31:51,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:51,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579614293] [2023-12-20 12:31:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:51,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 12:31:51,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:51,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579614293] [2023-12-20 12:31:51,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579614293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:51,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:51,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:31:51,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255275519] [2023-12-20 12:31:51,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:51,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:31:51,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:51,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:31:51,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:31:51,777 INFO L87 Difference]: Start difference. First operand 2418 states and 3782 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:51,867 INFO L93 Difference]: Finished difference Result 3810 states and 5778 transitions. [2023-12-20 12:31:51,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:31:51,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-20 12:31:51,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:51,876 INFO L225 Difference]: With dead ends: 3810 [2023-12-20 12:31:51,876 INFO L226 Difference]: Without dead ends: 3300 [2023-12-20 12:31:51,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:31:51,878 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:51,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:51,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2023-12-20 12:31:51,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2926. [2023-12-20 12:31:51,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5383036935704515) internal successors, (4498), 2925 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4498 transitions. [2023-12-20 12:31:51,939 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4498 transitions. Word has length 50 [2023-12-20 12:31:51,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:51,940 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4498 transitions. [2023-12-20 12:31:51,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:51,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4498 transitions. [2023-12-20 12:31:51,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 12:31:51,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:51,940 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] [2023-12-20 12:31:51,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 12:31:51,941 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:51,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:51,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1978344379, now seen corresponding path program 1 times [2023-12-20 12:31:51,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:51,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659173966] [2023-12-20 12:31:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:51,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:52,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:52,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659173966] [2023-12-20 12:31:52,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659173966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:52,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:52,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:52,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003005714] [2023-12-20 12:31:52,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:52,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:52,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:52,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:52,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:52,002 INFO L87 Difference]: Start difference. First operand 2926 states and 4498 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:52,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:52,076 INFO L93 Difference]: Finished difference Result 5078 states and 7536 transitions. [2023-12-20 12:31:52,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:52,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-20 12:31:52,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:52,084 INFO L225 Difference]: With dead ends: 5078 [2023-12-20 12:31:52,084 INFO L226 Difference]: Without dead ends: 2928 [2023-12-20 12:31:52,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:52,087 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:52,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:52,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2023-12-20 12:31:52,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2926. [2023-12-20 12:31:52,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5212038303693571) internal successors, (4448), 2925 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:52,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4448 transitions. [2023-12-20 12:31:52,142 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4448 transitions. Word has length 51 [2023-12-20 12:31:52,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:52,143 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4448 transitions. [2023-12-20 12:31:52,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:52,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4448 transitions. [2023-12-20 12:31:52,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 12:31:52,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:52,143 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] [2023-12-20 12:31:52,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 12:31:52,144 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:52,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:52,144 INFO L85 PathProgramCache]: Analyzing trace with hash 396658031, now seen corresponding path program 1 times [2023-12-20 12:31:52,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:52,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307842246] [2023-12-20 12:31:52,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:52,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:52,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:52,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307842246] [2023-12-20 12:31:52,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307842246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:52,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:52,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:52,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367069895] [2023-12-20 12:31:52,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:52,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:52,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:52,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:52,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:52,187 INFO L87 Difference]: Start difference. First operand 2926 states and 4448 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:52,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:52,216 INFO L93 Difference]: Finished difference Result 3772 states and 5635 transitions. [2023-12-20 12:31:52,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:52,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-20 12:31:52,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:52,221 INFO L225 Difference]: With dead ends: 3772 [2023-12-20 12:31:52,221 INFO L226 Difference]: Without dead ends: 1622 [2023-12-20 12:31:52,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:52,223 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:52,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2023-12-20 12:31:52,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1615. [2023-12-20 12:31:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1613 states have (on average 1.6261624302541848) internal successors, (2623), 1614 states have internal predecessors, (2623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2623 transitions. [2023-12-20 12:31:52,251 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2623 transitions. Word has length 52 [2023-12-20 12:31:52,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:52,252 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2623 transitions. [2023-12-20 12:31:52,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:52,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2623 transitions. [2023-12-20 12:31:52,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 12:31:52,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:52,252 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] [2023-12-20 12:31:52,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 12:31:52,253 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:52,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:52,253 INFO L85 PathProgramCache]: Analyzing trace with hash -230503927, now seen corresponding path program 1 times [2023-12-20 12:31:52,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:52,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681990367] [2023-12-20 12:31:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:52,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:52,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:52,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681990367] [2023-12-20 12:31:52,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681990367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:52,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:52,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:52,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14195115] [2023-12-20 12:31:52,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:52,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:52,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:52,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:52,295 INFO L87 Difference]: Start difference. First operand 1615 states and 2623 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) [2023-12-20 12:31:52,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:52,316 INFO L93 Difference]: Finished difference Result 2033 states and 3201 transitions. [2023-12-20 12:31:52,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:52,317 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 [2023-12-20 12:31:52,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:52,320 INFO L225 Difference]: With dead ends: 2033 [2023-12-20 12:31:52,320 INFO L226 Difference]: Without dead ends: 1203 [2023-12-20 12:31:52,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:52,321 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:52,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:52,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-12-20 12:31:52,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2023-12-20 12:31:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1199 states have (on average 1.6997497914929107) internal successors, (2038), 1200 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 2038 transitions. [2023-12-20 12:31:52,338 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 2038 transitions. Word has length 53 [2023-12-20 12:31:52,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:52,339 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 2038 transitions. [2023-12-20 12:31:52,339 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) [2023-12-20 12:31:52,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 2038 transitions. [2023-12-20 12:31:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 12:31:52,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:52,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:52,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 12:31:52,339 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:52,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash 796015063, now seen corresponding path program 1 times [2023-12-20 12:31:52,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:52,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934439742] [2023-12-20 12:31:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:52,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:53,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:53,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934439742] [2023-12-20 12:31:53,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934439742] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:31:53,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826861475] [2023-12-20 12:31:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:53,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:31:53,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:31:53,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:31:53,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 12:31:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:53,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 12:31:53,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:31:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:31:53,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:31:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:31:53,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826861475] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:31:53,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:31:53,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 12:31:53,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447353780] [2023-12-20 12:31:53,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:31:53,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 12:31:53,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:53,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 12:31:53,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-20 12:31:53,694 INFO L87 Difference]: Start difference. First operand 1201 states and 2038 transitions. Second operand has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:55,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:55,136 INFO L93 Difference]: Finished difference Result 3300 states and 4790 transitions. [2023-12-20 12:31:55,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-20 12:31:55,136 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 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 [2023-12-20 12:31:55,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:55,141 INFO L225 Difference]: With dead ends: 3300 [2023-12-20 12:31:55,141 INFO L226 Difference]: Without dead ends: 2884 [2023-12-20 12:31:55,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=504, Invalid=2148, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 12:31:55,144 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 17138 mSDsluCounter, 6163 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17138 SdHoareTripleChecker+Valid, 7654 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:55,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17138 Valid, 7654 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 12:31:55,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2023-12-20 12:31:55,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2672. [2023-12-20 12:31:55,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2670 states have (on average 1.4576779026217228) internal successors, (3892), 2671 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:55,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 3892 transitions. [2023-12-20 12:31:55,197 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 3892 transitions. Word has length 55 [2023-12-20 12:31:55,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:55,197 INFO L495 AbstractCegarLoop]: Abstraction has 2672 states and 3892 transitions. [2023-12-20 12:31:55,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:55,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 3892 transitions. [2023-12-20 12:31:55,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 12:31:55,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:55,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:55,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 12:31:55,403 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,SelfDestructingSolverStorable15 [2023-12-20 12:31:55,404 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:55,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:55,405 INFO L85 PathProgramCache]: Analyzing trace with hash -315121631, now seen corresponding path program 1 times [2023-12-20 12:31:55,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:55,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932206232] [2023-12-20 12:31:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:55,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:55,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:55,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932206232] [2023-12-20 12:31:55,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932206232] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:31:55,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301474747] [2023-12-20 12:31:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:55,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:31:55,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:31:55,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:31:55,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 12:31:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:55,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:31:55,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:31:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:56,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:31:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:56,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301474747] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:31:56,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:31:56,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-20 12:31:56,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264952892] [2023-12-20 12:31:56,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:31:56,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:31:56,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:56,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:31:56,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:31:56,832 INFO L87 Difference]: Start difference. First operand 2672 states and 3892 transitions. Second operand has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:57,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:57,321 INFO L93 Difference]: Finished difference Result 6001 states and 8124 transitions. [2023-12-20 12:31:57,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 12:31:57,322 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-20 12:31:57,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:57,329 INFO L225 Difference]: With dead ends: 6001 [2023-12-20 12:31:57,329 INFO L226 Difference]: Without dead ends: 4422 [2023-12-20 12:31:57,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:31:57,332 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 14772 mSDsluCounter, 7535 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14772 SdHoareTripleChecker+Valid, 9020 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:57,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14772 Valid, 9020 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:31:57,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2023-12-20 12:31:57,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4212. [2023-12-20 12:31:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 4210 states have (on average 1.3888361045130642) internal successors, (5847), 4211 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 5847 transitions. [2023-12-20 12:31:57,421 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 5847 transitions. Word has length 56 [2023-12-20 12:31:57,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:57,421 INFO L495 AbstractCegarLoop]: Abstraction has 4212 states and 5847 transitions. [2023-12-20 12:31:57,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:57,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 5847 transitions. [2023-12-20 12:31:57,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 12:31:57,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:57,422 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:57,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 12:31:57,636 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,SelfDestructingSolverStorable16 [2023-12-20 12:31:57,636 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:57,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:57,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2010436385, now seen corresponding path program 1 times [2023-12-20 12:31:57,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:57,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848180024] [2023-12-20 12:31:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:57,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:57,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:57,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848180024] [2023-12-20 12:31:57,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848180024] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:31:57,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10530487] [2023-12-20 12:31:57,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:57,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:31:57,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:31:57,870 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:31:57,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 12:31:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:57,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:31:57,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:31:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:58,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:31:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:58,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10530487] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:31:58,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:31:58,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-20 12:31:58,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055501807] [2023-12-20 12:31:58,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:31:58,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 12:31:58,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:58,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 12:31:58,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-12-20 12:31:58,953 INFO L87 Difference]: Start difference. First operand 4212 states and 5847 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:59,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:59,567 INFO L93 Difference]: Finished difference Result 7561 states and 10123 transitions. [2023-12-20 12:31:59,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 12:31:59,568 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-20 12:31:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:59,575 INFO L225 Difference]: With dead ends: 7561 [2023-12-20 12:31:59,575 INFO L226 Difference]: Without dead ends: 4560 [2023-12-20 12:31:59,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 12:31:59,579 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 14987 mSDsluCounter, 6169 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14987 SdHoareTripleChecker+Valid, 7662 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:59,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14987 Valid, 7662 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:31:59,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4560 states. [2023-12-20 12:31:59,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4560 to 4272. [2023-12-20 12:31:59,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4270 states have (on average 1.3740046838407494) internal successors, (5867), 4271 states have internal predecessors, (5867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 5867 transitions. [2023-12-20 12:31:59,671 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 5867 transitions. Word has length 56 [2023-12-20 12:31:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:59,671 INFO L495 AbstractCegarLoop]: Abstraction has 4272 states and 5867 transitions. [2023-12-20 12:31:59,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:31:59,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 5867 transitions. [2023-12-20 12:31:59,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 12:31:59,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:59,672 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:59,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 12:31:59,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 12:31:59,880 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:59,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:59,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1055635935, now seen corresponding path program 1 times [2023-12-20 12:31:59,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:59,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546652915] [2023-12-20 12:31:59,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:59,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:00,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:00,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546652915] [2023-12-20 12:32:00,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546652915] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:32:00,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065324679] [2023-12-20 12:32:00,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:00,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:00,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:32:00,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:32:00,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 12:32:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:00,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:32:00,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:32:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:00,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:32:01,089 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:01,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065324679] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:32:01,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:32:01,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-20 12:32:01,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461306959] [2023-12-20 12:32:01,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:32:01,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 12:32:01,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:01,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 12:32:01,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-20 12:32:01,090 INFO L87 Difference]: Start difference. First operand 4272 states and 5867 transitions. Second operand has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:01,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:01,746 INFO L93 Difference]: Finished difference Result 10853 states and 14150 transitions. [2023-12-20 12:32:01,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 12:32:01,747 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-20 12:32:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:01,759 INFO L225 Difference]: With dead ends: 10853 [2023-12-20 12:32:01,760 INFO L226 Difference]: Without dead ends: 8091 [2023-12-20 12:32:01,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 12:32:01,765 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 17972 mSDsluCounter, 7596 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17972 SdHoareTripleChecker+Valid, 9080 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:01,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17972 Valid, 9080 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:32:01,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2023-12-20 12:32:01,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 7571. [2023-12-20 12:32:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7571 states, 7569 states have (on average 1.3065134099616857) internal successors, (9889), 7570 states have internal predecessors, (9889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:01,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 9889 transitions. [2023-12-20 12:32:01,938 INFO L78 Accepts]: Start accepts. Automaton has 7571 states and 9889 transitions. Word has length 56 [2023-12-20 12:32:01,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:01,939 INFO L495 AbstractCegarLoop]: Abstraction has 7571 states and 9889 transitions. [2023-12-20 12:32:01,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:01,939 INFO L276 IsEmpty]: Start isEmpty. Operand 7571 states and 9889 transitions. [2023-12-20 12:32:01,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 12:32:01,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:01,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:32:01,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 12:32:02,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:02,145 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:02,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:02,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1773329579, now seen corresponding path program 1 times [2023-12-20 12:32:02,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:02,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973201244] [2023-12-20 12:32:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:02,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:02,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:02,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973201244] [2023-12-20 12:32:02,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973201244] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:32:02,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348792206] [2023-12-20 12:32:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:02,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:02,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:32:02,688 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:32:02,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 12:32:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:02,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-20 12:32:02,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:32:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:04,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:32:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:06,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348792206] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:32:06,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:32:06,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 22] total 49 [2023-12-20 12:32:06,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874792024] [2023-12-20 12:32:06,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:32:06,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-20 12:32:06,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:06,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-20 12:32:06,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1982, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 12:32:06,881 INFO L87 Difference]: Start difference. First operand 7571 states and 9889 transitions. Second operand has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:53,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:53,204 INFO L93 Difference]: Finished difference Result 17190 states and 21838 transitions. [2023-12-20 12:32:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2023-12-20 12:32:53,204 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-20 12:32:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:53,221 INFO L225 Difference]: With dead ends: 17190 [2023-12-20 12:32:53,221 INFO L226 Difference]: Without dead ends: 12104 [2023-12-20 12:32:53,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22446 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=10024, Invalid=43106, Unknown=0, NotChecked=0, Total=53130 [2023-12-20 12:32:53,234 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 11159 mSDsluCounter, 20517 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11159 SdHoareTripleChecker+Valid, 22020 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:53,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11159 Valid, 22020 Invalid, 2497 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [163 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-20 12:32:53,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12104 states. [2023-12-20 12:32:53,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12104 to 6837. [2023-12-20 12:32:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6837 states, 6835 states have (on average 1.319824433065106) internal successors, (9021), 6836 states have internal predecessors, (9021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6837 states to 6837 states and 9021 transitions. [2023-12-20 12:32:53,495 INFO L78 Accepts]: Start accepts. Automaton has 6837 states and 9021 transitions. Word has length 57 [2023-12-20 12:32:53,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:53,496 INFO L495 AbstractCegarLoop]: Abstraction has 6837 states and 9021 transitions. [2023-12-20 12:32:53,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:53,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6837 states and 9021 transitions. [2023-12-20 12:32:53,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 12:32:53,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:53,496 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] [2023-12-20 12:32:53,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 12:32:53,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:53,703 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:53,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:53,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1279123741, now seen corresponding path program 1 times [2023-12-20 12:32:53,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:53,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997431579] [2023-12-20 12:32:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:53,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:54,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:54,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997431579] [2023-12-20 12:32:54,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997431579] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:32:54,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471189020] [2023-12-20 12:32:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:54,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:54,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:32:54,105 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:32:54,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 12:32:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:54,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 12:32:54,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:32:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:54,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:32:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:55,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471189020] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:32:55,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:32:55,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-12-20 12:32:55,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858888182] [2023-12-20 12:32:55,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:32:55,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 12:32:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:55,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 12:32:55,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-12-20 12:32:55,359 INFO L87 Difference]: Start difference. First operand 6837 states and 9021 transitions. Second operand has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:57,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:57,375 INFO L93 Difference]: Finished difference Result 13362 states and 17256 transitions. [2023-12-20 12:32:57,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 12:32:57,376 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-20 12:32:57,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:57,389 INFO L225 Difference]: With dead ends: 13362 [2023-12-20 12:32:57,389 INFO L226 Difference]: Without dead ends: 10528 [2023-12-20 12:32:57,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=793, Invalid=2867, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 12:32:57,394 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 15173 mSDsluCounter, 13588 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15173 SdHoareTripleChecker+Valid, 15084 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:57,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15173 Valid, 15084 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 12:32:57,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10528 states. [2023-12-20 12:32:57,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10528 to 5271. [2023-12-20 12:32:57,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5271 states, 5269 states have (on average 1.3437084835832227) internal successors, (7080), 5270 states have internal predecessors, (7080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5271 states to 5271 states and 7080 transitions. [2023-12-20 12:32:57,612 INFO L78 Accepts]: Start accepts. Automaton has 5271 states and 7080 transitions. Word has length 59 [2023-12-20 12:32:57,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:57,613 INFO L495 AbstractCegarLoop]: Abstraction has 5271 states and 7080 transitions. [2023-12-20 12:32:57,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:57,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5271 states and 7080 transitions. [2023-12-20 12:32:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-20 12:32:57,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:57,613 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] [2023-12-20 12:32:57,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 12:32:57,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:57,819 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:57,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:57,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1248748378, now seen corresponding path program 1 times [2023-12-20 12:32:57,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:57,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861672856] [2023-12-20 12:32:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:57,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:57,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:57,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861672856] [2023-12-20 12:32:57,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861672856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:32:57,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:32:57,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:32:57,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657221666] [2023-12-20 12:32:57,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:32:57,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:32:57,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:57,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:32:57,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:32:57,907 INFO L87 Difference]: Start difference. First operand 5271 states and 7080 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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) [2023-12-20 12:33:02,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:02,679 INFO L93 Difference]: Finished difference Result 7526 states and 11389 transitions. [2023-12-20 12:33:02,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:33:02,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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 [2023-12-20 12:33:02,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:02,689 INFO L225 Difference]: With dead ends: 7526 [2023-12-20 12:33:02,689 INFO L226 Difference]: Without dead ends: 6773 [2023-12-20 12:33:02,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:33:02,690 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 2324 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2324 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:33:02,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2324 Valid, 756 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-20 12:33:02,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2023-12-20 12:33:02,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6773. [2023-12-20 12:33:02,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6773 states, 6771 states have (on average 1.3578496529316202) internal successors, (9194), 6772 states have internal predecessors, (9194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:02,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 9194 transitions. [2023-12-20 12:33:02,913 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 9194 transitions. Word has length 60 [2023-12-20 12:33:02,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:02,914 INFO L495 AbstractCegarLoop]: Abstraction has 6773 states and 9194 transitions. [2023-12-20 12:33:02,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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) [2023-12-20 12:33:02,914 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 9194 transitions. [2023-12-20 12:33:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 12:33:02,915 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:02,915 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:33:02,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 12:33:02,916 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:02,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:02,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1433091509, now seen corresponding path program 1 times [2023-12-20 12:33:02,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:02,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448969291] [2023-12-20 12:33:02,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:02,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:03,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:03,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448969291] [2023-12-20 12:33:03,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448969291] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:33:03,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916928542] [2023-12-20 12:33:03,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:03,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:03,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:33:03,648 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:33:03,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 12:33:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:03,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-20 12:33:03,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:33:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:06,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:33:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:11,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916928542] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:33:11,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:33:11,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 26, 25] total 65 [2023-12-20 12:33:11,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585948593] [2023-12-20 12:33:11,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:33:11,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-20 12:33:11,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:11,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-20 12:33:11,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=3821, Unknown=0, NotChecked=0, Total=4160 [2023-12-20 12:33:11,272 INFO L87 Difference]: Start difference. First operand 6773 states and 9194 transitions. Second operand has 65 states, 65 states have (on average 4.030769230769231) internal successors, (262), 65 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:33:30,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:33:31,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:33:35,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:33:39,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:33:40,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:06,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:10,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:14,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:18,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:22,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:26,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:31,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:35,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:39,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:43,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:47,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:52,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:56,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:00,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:04,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:08,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:12,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:16,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:20,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:25,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:29,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:33,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:37,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:41,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:45,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:47,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:51,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:55,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:35:59,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:36:03,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:36:07,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:38:42,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:38:42,977 INFO L93 Difference]: Finished difference Result 15883 states and 20472 transitions. [2023-12-20 12:38:42,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2023-12-20 12:38:42,978 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.030769230769231) internal successors, (262), 65 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-12-20 12:38:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:38:42,994 INFO L225 Difference]: With dead ends: 15883 [2023-12-20 12:38:42,994 INFO L226 Difference]: Without dead ends: 14113 [2023-12-20 12:38:43,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34447 ImplicationChecksByTransitivity, 184.0s TimeCoverageRelationStatistics Valid=12357, Invalid=81578, Unknown=7, NotChecked=0, Total=93942 [2023-12-20 12:38:43,003 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 42543 mSDsluCounter, 36125 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 392 mSolverCounterUnsat, 32 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 146.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42543 SdHoareTripleChecker+Valid, 37685 SdHoareTripleChecker+Invalid, 3931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 32 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 149.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:38:43,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42543 Valid, 37685 Invalid, 3931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [392 Valid, 3507 Invalid, 32 Unknown, 0 Unchecked, 149.5s Time] [2023-12-20 12:38:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14113 states. [2023-12-20 12:38:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14113 to 9303. [2023-12-20 12:38:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9303 states, 9301 states have (on average 1.3292119126975595) internal successors, (12363), 9302 states have internal predecessors, (12363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:38:43,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9303 states to 9303 states and 12363 transitions. [2023-12-20 12:38:43,525 INFO L78 Accepts]: Start accepts. Automaton has 9303 states and 12363 transitions. Word has length 93 [2023-12-20 12:38:43,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:38:43,525 INFO L495 AbstractCegarLoop]: Abstraction has 9303 states and 12363 transitions. [2023-12-20 12:38:43,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.030769230769231) internal successors, (262), 65 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:38:43,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9303 states and 12363 transitions. [2023-12-20 12:38:43,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 12:38:43,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:38:43,527 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:38:43,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 12:38:43,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:38:43,737 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:38:43,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:38:43,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1314319299, now seen corresponding path program 1 times [2023-12-20 12:38:43,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:38:43,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370011185] [2023-12-20 12:38:43,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:38:43,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:38:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:38:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:38:44,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:38:44,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370011185] [2023-12-20 12:38:44,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370011185] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:38:44,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624481244] [2023-12-20 12:38:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:38:44,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:38:44,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:38:44,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:38:44,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 12:38:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:38:44,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 12:38:44,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:38:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:38:45,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:38:47,127 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:38:47,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624481244] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:38:47,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:38:47,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 12:38:47,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110695635] [2023-12-20 12:38:47,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:38:47,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 12:38:47,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:38:47,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 12:38:47,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-20 12:38:47,129 INFO L87 Difference]: Start difference. First operand 9303 states and 12363 transitions. Second operand has 27 states, 27 states have (on average 7.407407407407407) internal successors, (200), 26 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:38:48,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:38:48,885 INFO L93 Difference]: Finished difference Result 14328 states and 18731 transitions. [2023-12-20 12:38:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 12:38:48,886 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.407407407407407) internal successors, (200), 26 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-20 12:38:48,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:38:48,895 INFO L225 Difference]: With dead ends: 14328 [2023-12-20 12:38:48,895 INFO L226 Difference]: Without dead ends: 9639 [2023-12-20 12:38:48,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 12:38:48,898 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 12008 mSDsluCounter, 8941 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12008 SdHoareTripleChecker+Valid, 10441 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:38:48,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12008 Valid, 10441 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 12:38:48,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9639 states. [2023-12-20 12:38:49,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9639 to 9303. [2023-12-20 12:38:49,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9303 states, 9301 states have (on average 1.3179228039995698) internal successors, (12258), 9302 states have internal predecessors, (12258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:38:49,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9303 states to 9303 states and 12258 transitions. [2023-12-20 12:38:49,401 INFO L78 Accepts]: Start accepts. Automaton has 9303 states and 12258 transitions. Word has length 94 [2023-12-20 12:38:49,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:38:49,401 INFO L495 AbstractCegarLoop]: Abstraction has 9303 states and 12258 transitions. [2023-12-20 12:38:49,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.407407407407407) internal successors, (200), 26 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:38:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 9303 states and 12258 transitions. [2023-12-20 12:38:49,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 12:38:49,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:38:49,403 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:38:49,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 12:38:49,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-20 12:38:49,608 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:38:49,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:38:49,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1500044763, now seen corresponding path program 1 times [2023-12-20 12:38:49,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:38:49,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035079161] [2023-12-20 12:38:49,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:38:49,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:38:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:38:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:38:50,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:38:50,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035079161] [2023-12-20 12:38:50,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035079161] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:38:50,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595104617] [2023-12-20 12:38:50,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:38:50,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:38:50,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:38:50,319 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:38:50,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 12:38:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:38:50,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-20 12:38:50,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:38:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:38:52,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:38:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:38:55,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595104617] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:38:55,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:38:55,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 17] total 52 [2023-12-20 12:38:55,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478150692] [2023-12-20 12:38:55,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:38:55,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-20 12:38:55,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:38:55,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-20 12:38:55,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2344, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 12:38:55,879 INFO L87 Difference]: Start difference. First operand 9303 states and 12258 transitions. Second operand has 52 states, 52 states have (on average 4.75) internal successors, (247), 52 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:39:10,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:39:10,928 INFO L93 Difference]: Finished difference Result 21300 states and 27121 transitions. [2023-12-20 12:39:10,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-20 12:39:10,929 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.75) internal successors, (247), 52 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-20 12:39:10,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:39:10,945 INFO L225 Difference]: With dead ends: 21300 [2023-12-20 12:39:10,945 INFO L226 Difference]: Without dead ends: 15875 [2023-12-20 12:39:10,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4083 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=3070, Invalid=12182, Unknown=0, NotChecked=0, Total=15252 [2023-12-20 12:39:10,959 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 16874 mSDsluCounter, 27286 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16874 SdHoareTripleChecker+Valid, 28815 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:39:10,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16874 Valid, 28815 Invalid, 1527 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 12:39:10,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15875 states. [2023-12-20 12:39:12,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15875 to 14763. [2023-12-20 12:39:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14763 states, 14761 states have (on average 1.2867691890793307) internal successors, (18994), 14762 states have internal predecessors, (18994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:39:12,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14763 states to 14763 states and 18994 transitions. [2023-12-20 12:39:12,128 INFO L78 Accepts]: Start accepts. Automaton has 14763 states and 18994 transitions. Word has length 94 [2023-12-20 12:39:12,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:39:12,128 INFO L495 AbstractCegarLoop]: Abstraction has 14763 states and 18994 transitions. [2023-12-20 12:39:12,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.75) internal successors, (247), 52 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:39:12,128 INFO L276 IsEmpty]: Start isEmpty. Operand 14763 states and 18994 transitions. [2023-12-20 12:39:12,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 12:39:12,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:39:12,130 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:39:12,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 12:39:12,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-20 12:39:12,333 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:39:12,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:39:12,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1178918401, now seen corresponding path program 1 times [2023-12-20 12:39:12,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:39:12,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117107551] [2023-12-20 12:39:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:39:12,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:39:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:39:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:39:13,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:39:13,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117107551] [2023-12-20 12:39:13,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117107551] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:39:13,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793543341] [2023-12-20 12:39:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:39:13,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:39:13,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:39:13,346 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:39:13,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 12:39:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:39:13,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-20 12:39:13,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:39:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 12:39:16,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:39:20,400 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 12:39:20,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793543341] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:39:20,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:39:20,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 22] total 58 [2023-12-20 12:39:20,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825499270] [2023-12-20 12:39:20,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:39:20,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-20 12:39:20,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:39:20,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-20 12:39:20,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=3050, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 12:39:20,402 INFO L87 Difference]: Start difference. First operand 14763 states and 18994 transitions. Second operand has 58 states, 58 states have (on average 4.051724137931035) internal successors, (235), 58 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:39:59,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:39:59,430 INFO L93 Difference]: Finished difference Result 26816 states and 33743 transitions. [2023-12-20 12:39:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-20 12:39:59,431 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.051724137931035) internal successors, (235), 58 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 12:39:59,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:39:59,446 INFO L225 Difference]: With dead ends: 26816 [2023-12-20 12:39:59,446 INFO L226 Difference]: Without dead ends: 20170 [2023-12-20 12:39:59,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12235 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=5990, Invalid=34210, Unknown=0, NotChecked=0, Total=40200 [2023-12-20 12:39:59,452 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 34574 mSDsluCounter, 36588 mSDsCounter, 0 mSdLazyCounter, 4118 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34574 SdHoareTripleChecker+Valid, 38165 SdHoareTripleChecker+Invalid, 4279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 4118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:39:59,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34574 Valid, 38165 Invalid, 4279 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [161 Valid, 4118 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-20 12:39:59,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20170 states. [2023-12-20 12:40:00,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20170 to 17372. [2023-12-20 12:40:00,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17372 states, 17370 states have (on average 1.2766263672999425) internal successors, (22175), 17371 states have internal predecessors, (22175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17372 states to 17372 states and 22175 transitions. [2023-12-20 12:40:00,869 INFO L78 Accepts]: Start accepts. Automaton has 17372 states and 22175 transitions. Word has length 95 [2023-12-20 12:40:00,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:40:00,870 INFO L495 AbstractCegarLoop]: Abstraction has 17372 states and 22175 transitions. [2023-12-20 12:40:00,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.051724137931035) internal successors, (235), 58 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:00,870 INFO L276 IsEmpty]: Start isEmpty. Operand 17372 states and 22175 transitions. [2023-12-20 12:40:00,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 12:40:00,871 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:40:00,872 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:40:00,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 12:40:01,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 12:40:01,073 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:40:01,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:40:01,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2104979989, now seen corresponding path program 1 times [2023-12-20 12:40:01,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:40:01,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525250676] [2023-12-20 12:40:01,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:01,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:40:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:01,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:40:01,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525250676] [2023-12-20 12:40:01,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525250676] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:40:01,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440195875] [2023-12-20 12:40:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:01,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:40:01,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:40:01,669 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:40:01,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 12:40:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:01,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 12:40:01,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:40:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 21 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:02,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:40:04,071 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:04,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440195875] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:40:04,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:40:04,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-12-20 12:40:04,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641633444] [2023-12-20 12:40:04,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:40:04,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 12:40:04,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:40:04,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 12:40:04,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2023-12-20 12:40:04,073 INFO L87 Difference]: Start difference. First operand 17372 states and 22175 transitions. Second operand has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 25 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:40:06,438 INFO L93 Difference]: Finished difference Result 28995 states and 36665 transitions. [2023-12-20 12:40:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 12:40:06,439 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 25 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-20 12:40:06,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:40:06,453 INFO L225 Difference]: With dead ends: 28995 [2023-12-20 12:40:06,454 INFO L226 Difference]: Without dead ends: 17494 [2023-12-20 12:40:06,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=399, Invalid=1323, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 12:40:06,462 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 17735 mSDsluCounter, 9060 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17735 SdHoareTripleChecker+Valid, 10563 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:40:06,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17735 Valid, 10563 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 12:40:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17494 states. [2023-12-20 12:40:07,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17494 to 17364. [2023-12-20 12:40:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17364 states, 17362 states have (on average 1.2591867296394426) internal successors, (21862), 17363 states have internal predecessors, (21862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17364 states to 17364 states and 21862 transitions. [2023-12-20 12:40:07,999 INFO L78 Accepts]: Start accepts. Automaton has 17364 states and 21862 transitions. Word has length 95 [2023-12-20 12:40:07,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:40:07,999 INFO L495 AbstractCegarLoop]: Abstraction has 17364 states and 21862 transitions. [2023-12-20 12:40:08,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 25 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:08,000 INFO L276 IsEmpty]: Start isEmpty. Operand 17364 states and 21862 transitions. [2023-12-20 12:40:08,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 12:40:08,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:40:08,001 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:40:08,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 12:40:08,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 12:40:08,202 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:40:08,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:40:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1976078083, now seen corresponding path program 1 times [2023-12-20 12:40:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:40:08,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900016999] [2023-12-20 12:40:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:08,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:40:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:09,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:40:09,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900016999] [2023-12-20 12:40:09,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900016999] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:40:09,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401364442] [2023-12-20 12:40:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:09,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:40:09,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:40:09,430 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:40:09,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 12:40:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:09,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-20 12:40:09,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:40:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:13,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:40:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:18,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401364442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:40:18,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:40:18,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 24] total 66 [2023-12-20 12:40:18,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178532936] [2023-12-20 12:40:18,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:40:18,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-20 12:40:18,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:40:18,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-20 12:40:18,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=3942, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 12:40:18,059 INFO L87 Difference]: Start difference. First operand 17364 states and 21862 transitions. Second operand has 66 states, 66 states have (on average 3.9545454545454546) internal successors, (261), 66 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:40:58,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:40:58,711 INFO L93 Difference]: Finished difference Result 29166 states and 36139 transitions. [2023-12-20 12:40:58,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2023-12-20 12:40:58,712 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.9545454545454546) internal successors, (261), 66 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-20 12:40:58,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:40:58,730 INFO L225 Difference]: With dead ends: 29166 [2023-12-20 12:40:58,730 INFO L226 Difference]: Without dead ends: 23052 [2023-12-20 12:40:58,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14098 ImplicationChecksByTransitivity, 39.5s TimeCoverageRelationStatistics Valid=7178, Invalid=41884, Unknown=0, NotChecked=0, Total=49062 [2023-12-20 12:40:58,738 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 27581 mSDsluCounter, 29031 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27581 SdHoareTripleChecker+Valid, 30557 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-20 12:40:58,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27581 Valid, 30557 Invalid, 2159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [184 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-20 12:40:58,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23052 states. [2023-12-20 12:41:00,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23052 to 17098. [2023-12-20 12:41:00,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17098 states, 17096 states have (on average 1.2593004211511465) internal successors, (21529), 17097 states have internal predecessors, (21529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:41:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17098 states to 17098 states and 21529 transitions. [2023-12-20 12:41:00,396 INFO L78 Accepts]: Start accepts. Automaton has 17098 states and 21529 transitions. Word has length 96 [2023-12-20 12:41:00,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:41:00,396 INFO L495 AbstractCegarLoop]: Abstraction has 17098 states and 21529 transitions. [2023-12-20 12:41:00,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.9545454545454546) internal successors, (261), 66 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:41:00,397 INFO L276 IsEmpty]: Start isEmpty. Operand 17098 states and 21529 transitions. [2023-12-20 12:41:00,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 12:41:00,398 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:41:00,398 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:41:00,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 12:41:00,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 12:41:00,599 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:41:00,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:41:00,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1749146369, now seen corresponding path program 1 times [2023-12-20 12:41:00,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:41:00,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270901667] [2023-12-20 12:41:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:41:00,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:41:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:41:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:41:02,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:41:02,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270901667] [2023-12-20 12:41:02,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270901667] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:41:02,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937725533] [2023-12-20 12:41:02,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:41:02,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:41:02,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:41:02,217 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:41:02,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 12:41:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:41:02,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 12:41:02,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:41:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:41:06,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:41:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:41:12,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937725533] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:41:12,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:41:12,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 21] total 66 [2023-12-20 12:41:12,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005958604] [2023-12-20 12:41:12,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:41:12,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-20 12:41:12,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:41:12,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-20 12:41:12,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=3958, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 12:41:12,175 INFO L87 Difference]: Start difference. First operand 17098 states and 21529 transitions. Second operand has 66 states, 66 states have (on average 3.803030303030303) internal successors, (251), 66 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:42:49,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:42:49,188 INFO L93 Difference]: Finished difference Result 27289 states and 33788 transitions. [2023-12-20 12:42:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-12-20 12:42:49,188 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.803030303030303) internal successors, (251), 66 states have internal predecessors, (251), 0 states have call successors, (0), 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 96 [2023-12-20 12:42:49,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:42:49,208 INFO L225 Difference]: With dead ends: 27289 [2023-12-20 12:42:49,208 INFO L226 Difference]: Without dead ends: 24423 [2023-12-20 12:42:49,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 151 SyntacticMatches, 2 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31193 ImplicationChecksByTransitivity, 92.3s TimeCoverageRelationStatistics Valid=11193, Invalid=77909, Unknown=0, NotChecked=0, Total=89102 [2023-12-20 12:42:49,216 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 26275 mSDsluCounter, 31950 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26275 SdHoareTripleChecker+Valid, 33525 SdHoareTripleChecker+Invalid, 3314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:42:49,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26275 Valid, 33525 Invalid, 3314 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [207 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-20 12:42:49,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24423 states. [2023-12-20 12:42:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24423 to 18319. [2023-12-20 12:42:51,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18319 states, 18317 states have (on average 1.2553911666757658) internal successors, (22995), 18318 states have internal predecessors, (22995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:42:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18319 states to 18319 states and 22995 transitions. [2023-12-20 12:42:51,161 INFO L78 Accepts]: Start accepts. Automaton has 18319 states and 22995 transitions. Word has length 96 [2023-12-20 12:42:51,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:42:51,161 INFO L495 AbstractCegarLoop]: Abstraction has 18319 states and 22995 transitions. [2023-12-20 12:42:51,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.803030303030303) internal successors, (251), 66 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:42:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 18319 states and 22995 transitions. [2023-12-20 12:42:51,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:42:51,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:42:51,163 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:42:51,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-20 12:42:51,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 12:42:51,364 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:42:51,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:42:51,364 INFO L85 PathProgramCache]: Analyzing trace with hash 890945219, now seen corresponding path program 1 times [2023-12-20 12:42:51,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:42:51,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109812783] [2023-12-20 12:42:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:42:51,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:42:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:42:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:52,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:42:52,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109812783] [2023-12-20 12:42:52,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109812783] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:42:52,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825233627] [2023-12-20 12:42:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:42:52,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:42:52,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:42:52,214 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:42:52,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 12:42:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:42:52,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 12:42:52,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:42:53,976 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:53,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:42:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:57,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825233627] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:42:57,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:42:57,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 54 [2023-12-20 12:42:57,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206417956] [2023-12-20 12:42:57,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:42:57,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-20 12:42:57,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:42:57,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-20 12:42:57,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=2592, Unknown=0, NotChecked=0, Total=2862 [2023-12-20 12:42:57,962 INFO L87 Difference]: Start difference. First operand 18319 states and 22995 transitions. Second operand has 54 states, 54 states have (on average 4.833333333333333) internal successors, (261), 54 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:43:19,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:43:19,037 INFO L93 Difference]: Finished difference Result 30831 states and 38192 transitions. [2023-12-20 12:43:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-20 12:43:19,037 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.833333333333333) internal successors, (261), 54 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 12:43:19,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:43:19,062 INFO L225 Difference]: With dead ends: 30831 [2023-12-20 12:43:19,062 INFO L226 Difference]: Without dead ends: 25705 [2023-12-20 12:43:19,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7024 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=4131, Invalid=19739, Unknown=0, NotChecked=0, Total=23870 [2023-12-20 12:43:19,068 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 18350 mSDsluCounter, 24234 mSDsCounter, 0 mSdLazyCounter, 2638 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18350 SdHoareTripleChecker+Valid, 25814 SdHoareTripleChecker+Invalid, 2778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:43:19,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18350 Valid, 25814 Invalid, 2778 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [140 Valid, 2638 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-20 12:43:19,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25705 states. [2023-12-20 12:43:21,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25705 to 18257. [2023-12-20 12:43:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18257 states, 18255 states have (on average 1.2552177485620377) internal successors, (22914), 18256 states have internal predecessors, (22914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:43:21,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18257 states to 18257 states and 22914 transitions. [2023-12-20 12:43:21,160 INFO L78 Accepts]: Start accepts. Automaton has 18257 states and 22914 transitions. Word has length 97 [2023-12-20 12:43:21,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:43:21,160 INFO L495 AbstractCegarLoop]: Abstraction has 18257 states and 22914 transitions. [2023-12-20 12:43:21,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.833333333333333) internal successors, (261), 54 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:43:21,160 INFO L276 IsEmpty]: Start isEmpty. Operand 18257 states and 22914 transitions. [2023-12-20 12:43:21,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:43:21,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:43:21,162 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:43:21,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 12:43:21,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:43:21,363 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:43:21,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:43:21,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2100564577, now seen corresponding path program 1 times [2023-12-20 12:43:21,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:43:21,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973142030] [2023-12-20 12:43:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:43:21,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:43:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:43:22,504 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:22,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:43:22,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973142030] [2023-12-20 12:43:22,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973142030] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:43:22,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670436688] [2023-12-20 12:43:22,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:43:22,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:43:22,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:43:22,506 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:43:22,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 12:43:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:43:22,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:43:22,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:43:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:24,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:43:26,028 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:26,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670436688] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:43:26,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:43:26,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 49 [2023-12-20 12:43:26,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144765746] [2023-12-20 12:43:26,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:43:26,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-20 12:43:26,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:43:26,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-20 12:43:26,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2149, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 12:43:26,029 INFO L87 Difference]: Start difference. First operand 18257 states and 22914 transitions. Second operand has 49 states, 49 states have (on average 5.326530612244898) internal successors, (261), 49 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:43:52,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:43:52,939 INFO L93 Difference]: Finished difference Result 50156 states and 61457 transitions. [2023-12-20 12:43:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-20 12:43:52,940 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.326530612244898) internal successors, (261), 49 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 12:43:52,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:43:52,971 INFO L225 Difference]: With dead ends: 50156 [2023-12-20 12:43:52,972 INFO L226 Difference]: Without dead ends: 37165 [2023-12-20 12:43:52,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21135 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=8690, Invalid=46770, Unknown=0, NotChecked=0, Total=55460 [2023-12-20 12:43:52,981 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 31917 mSDsluCounter, 20370 mSDsCounter, 0 mSdLazyCounter, 4961 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31917 SdHoareTripleChecker+Valid, 22001 SdHoareTripleChecker+Invalid, 5105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 4961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:43:52,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31917 Valid, 22001 Invalid, 5105 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [144 Valid, 4961 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-20 12:43:52,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37165 states. [2023-12-20 12:43:56,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37165 to 25663. [2023-12-20 12:43:56,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25663 states, 25661 states have (on average 1.2465609290362807) internal successors, (31988), 25662 states have internal predecessors, (31988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:43:56,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25663 states to 25663 states and 31988 transitions. [2023-12-20 12:43:56,074 INFO L78 Accepts]: Start accepts. Automaton has 25663 states and 31988 transitions. Word has length 97 [2023-12-20 12:43:56,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:43:56,074 INFO L495 AbstractCegarLoop]: Abstraction has 25663 states and 31988 transitions. [2023-12-20 12:43:56,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.326530612244898) internal successors, (261), 49 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:43:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand 25663 states and 31988 transitions. [2023-12-20 12:43:56,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:43:56,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:43:56,076 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:43:56,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-20 12:43:56,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:43:56,281 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:43:56,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:43:56,281 INFO L85 PathProgramCache]: Analyzing trace with hash -346107173, now seen corresponding path program 1 times [2023-12-20 12:43:56,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:43:56,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552778684] [2023-12-20 12:43:56,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:43:56,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:43:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:43:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 42 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:56,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:43:56,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552778684] [2023-12-20 12:43:56,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552778684] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:43:56,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972748162] [2023-12-20 12:43:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:43:56,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:43:56,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:43:56,786 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:43:56,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 12:43:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:43:56,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:43:56,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:43:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 48 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:58,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:44:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 41 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:44:00,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972748162] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:44:00,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:44:00,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 41 [2023-12-20 12:44:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379754532] [2023-12-20 12:44:00,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:44:00,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-20 12:44:00,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:44:00,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-20 12:44:00,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 12:44:00,029 INFO L87 Difference]: Start difference. First operand 25663 states and 31988 transitions. Second operand has 41 states, 41 states have (on average 6.365853658536586) internal successors, (261), 41 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:44:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:44:14,043 INFO L93 Difference]: Finished difference Result 67306 states and 83129 transitions. [2023-12-20 12:44:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-20 12:44:14,043 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.365853658536586) internal successors, (261), 41 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 12:44:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:44:14,095 INFO L225 Difference]: With dead ends: 67306 [2023-12-20 12:44:14,095 INFO L226 Difference]: Without dead ends: 50864 [2023-12-20 12:44:14,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2788 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=2317, Invalid=9455, Unknown=0, NotChecked=0, Total=11772 [2023-12-20 12:44:14,103 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 24963 mSDsluCounter, 23622 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24963 SdHoareTripleChecker+Valid, 25176 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-20 12:44:14,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24963 Valid, 25176 Invalid, 1986 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [110 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-20 12:44:14,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50864 states. [2023-12-20 12:44:18,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50864 to 33175. [2023-12-20 12:44:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33175 states, 33173 states have (on average 1.2432098393271636) internal successors, (41241), 33174 states have internal predecessors, (41241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:44:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33175 states to 33175 states and 41241 transitions. [2023-12-20 12:44:18,524 INFO L78 Accepts]: Start accepts. Automaton has 33175 states and 41241 transitions. Word has length 97 [2023-12-20 12:44:18,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:44:18,525 INFO L495 AbstractCegarLoop]: Abstraction has 33175 states and 41241 transitions. [2023-12-20 12:44:18,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.365853658536586) internal successors, (261), 41 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:44:18,525 INFO L276 IsEmpty]: Start isEmpty. Operand 33175 states and 41241 transitions. [2023-12-20 12:44:18,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:44:18,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:44:18,526 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:44:18,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-20 12:44:18,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:44:18,731 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:44:18,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:44:18,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1728393669, now seen corresponding path program 1 times [2023-12-20 12:44:18,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:44:18,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019055003] [2023-12-20 12:44:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:44:18,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:44:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:44:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:44:19,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:44:19,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019055003] [2023-12-20 12:44:19,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019055003] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:44:19,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103696790] [2023-12-20 12:44:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:44:19,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:44:19,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:44:19,146 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:44:19,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 12:44:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:44:19,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:44:19,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:44:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:44:20,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:44:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:44:22,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103696790] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:44:22,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:44:22,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 41 [2023-12-20 12:44:22,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139055561] [2023-12-20 12:44:22,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:44:22,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-20 12:44:22,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:44:22,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-20 12:44:22,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1468, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 12:44:22,519 INFO L87 Difference]: Start difference. First operand 33175 states and 41241 transitions. Second operand has 41 states, 41 states have (on average 6.219512195121951) internal successors, (255), 41 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:44:38,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:44:38,258 INFO L93 Difference]: Finished difference Result 69577 states and 85915 transitions. [2023-12-20 12:44:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-20 12:44:38,259 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.219512195121951) internal successors, (255), 41 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-20 12:44:38,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:44:38,314 INFO L225 Difference]: With dead ends: 69577 [2023-12-20 12:44:38,315 INFO L226 Difference]: Without dead ends: 54139 [2023-12-20 12:44:38,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4474 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=2871, Invalid=12135, Unknown=0, NotChecked=0, Total=15006 [2023-12-20 12:44:38,323 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 30157 mSDsluCounter, 16763 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30157 SdHoareTripleChecker+Valid, 18312 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:44:38,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30157 Valid, 18312 Invalid, 2277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 12:44:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54139 states. [2023-12-20 12:44:43,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54139 to 37232. [2023-12-20 12:44:43,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37232 states, 37230 states have (on average 1.239860327692721) internal successors, (46160), 37231 states have internal predecessors, (46160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:44:43,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37232 states to 37232 states and 46160 transitions. [2023-12-20 12:44:43,417 INFO L78 Accepts]: Start accepts. Automaton has 37232 states and 46160 transitions. Word has length 97 [2023-12-20 12:44:43,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:44:43,417 INFO L495 AbstractCegarLoop]: Abstraction has 37232 states and 46160 transitions. [2023-12-20 12:44:43,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.219512195121951) internal successors, (255), 41 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:44:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 37232 states and 46160 transitions. [2023-12-20 12:44:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 12:44:43,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:44:43,418 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:44:43,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-20 12:44:43,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:44:43,625 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:44:43,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:44:43,626 INFO L85 PathProgramCache]: Analyzing trace with hash 595655367, now seen corresponding path program 1 times [2023-12-20 12:44:43,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:44:43,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47167001] [2023-12-20 12:44:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:44:43,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:44:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:44:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:44:44,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:44:44,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47167001] [2023-12-20 12:44:44,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47167001] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:44:44,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713949252] [2023-12-20 12:44:44,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:44:44,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:44:44,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:44:44,756 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:44:44,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 12:44:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:44:44,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-20 12:44:44,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:44:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 30 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:44:49,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:44:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:44:56,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713949252] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:44:56,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:44:56,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 69 [2023-12-20 12:44:56,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048357765] [2023-12-20 12:44:56,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:44:56,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-20 12:44:56,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:44:56,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-20 12:44:56,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=4175, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 12:44:56,519 INFO L87 Difference]: Start difference. First operand 37232 states and 46160 transitions. Second operand has 69 states, 69 states have (on average 3.8260869565217392) internal successors, (264), 69 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-20 12:45:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-20 12:45:45,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13488 ImplicationChecksByTransitivity, 50.2s TimeCoverageRelationStatistics Valid=7180, Invalid=35462, Unknown=0, NotChecked=0, Total=42642 [2023-12-20 12:45:45,670 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 3703 mSDsluCounter, 4102 mSDsCounter, 0 mSdLazyCounter, 2866 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3703 SdHoareTripleChecker+Valid, 4271 SdHoareTripleChecker+Invalid, 3039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:45:45,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3703 Valid, 4271 Invalid, 3039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2866 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-20 12:45:45,671 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 12:45:45,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 12:45:45,699 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 12:45:45,699 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 12:45:45,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:45:45,876 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (37232states) and FLOYD_HOARE automaton (currently 146 states, 69 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-15-2-3-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∨-2-2-2-1 context. [2023-12-20 12:45:45,878 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 12:45:45,880 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:45:45,882 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 12:45:45,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 12:45:45 BoogieIcfgContainer [2023-12-20 12:45:45,883 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 12:45:45,883 INFO L158 Benchmark]: Toolchain (without parser) took 840934.02ms. Allocated memory was 190.8MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 118.9MB in the beginning and 1.0GB in the end (delta: -911.6MB). Peak memory consumption was 984.0MB. Max. memory is 8.0GB. [2023-12-20 12:45:45,883 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 190.8MB. Free memory is still 141.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 12:45:45,883 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1228.57ms. Allocated memory was 190.8MB in the beginning and 339.7MB in the end (delta: 148.9MB). Free memory was 118.6MB in the beginning and 253.5MB in the end (delta: -134.9MB). Peak memory consumption was 84.3MB. Max. memory is 8.0GB. [2023-12-20 12:45:45,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 236.97ms. Allocated memory is still 339.7MB. Free memory was 253.0MB in the beginning and 233.6MB in the end (delta: 19.4MB). Peak memory consumption was 92.3MB. Max. memory is 8.0GB. [2023-12-20 12:45:45,884 INFO L158 Benchmark]: Boogie Preprocessor took 330.95ms. Allocated memory was 339.7MB in the beginning and 620.8MB in the end (delta: 281.0MB). Free memory was 233.1MB in the beginning and 486.8MB in the end (delta: -253.8MB). Peak memory consumption was 104.3MB. Max. memory is 8.0GB. [2023-12-20 12:45:45,884 INFO L158 Benchmark]: RCFGBuilder took 3055.22ms. Allocated memory was 620.8MB in the beginning and 1.0GB in the end (delta: 392.2MB). Free memory was 486.3MB in the beginning and 662.1MB in the end (delta: -175.8MB). Peak memory consumption was 221.2MB. Max. memory is 8.0GB. [2023-12-20 12:45:45,884 INFO L158 Benchmark]: TraceAbstraction took 836076.26ms. Allocated memory was 1.0GB in the beginning and 2.1GB in the end (delta: 1.1GB). Free memory was 661.6MB in the beginning and 1.0GB in the end (delta: -368.9MB). Peak memory consumption was 704.3MB. Max. memory is 8.0GB. [2023-12-20 12:45:45,885 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 190.8MB. Free memory is still 141.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1228.57ms. Allocated memory was 190.8MB in the beginning and 339.7MB in the end (delta: 148.9MB). Free memory was 118.6MB in the beginning and 253.5MB in the end (delta: -134.9MB). Peak memory consumption was 84.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 236.97ms. Allocated memory is still 339.7MB. Free memory was 253.0MB in the beginning and 233.6MB in the end (delta: 19.4MB). Peak memory consumption was 92.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 330.95ms. Allocated memory was 339.7MB in the beginning and 620.8MB in the end (delta: 281.0MB). Free memory was 233.1MB in the beginning and 486.8MB in the end (delta: -253.8MB). Peak memory consumption was 104.3MB. Max. memory is 8.0GB. * RCFGBuilder took 3055.22ms. Allocated memory was 620.8MB in the beginning and 1.0GB in the end (delta: 392.2MB). Free memory was 486.3MB in the beginning and 662.1MB in the end (delta: -175.8MB). Peak memory consumption was 221.2MB. Max. memory is 8.0GB. * TraceAbstraction took 836076.26ms. Allocated memory was 1.0GB in the beginning and 2.1GB in the end (delta: 1.1GB). Free memory was 661.6MB in the beginning and 1.0GB in the end (delta: -368.9MB). Peak memory consumption was 704.3MB. 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: 290]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 290). Cancelled while NwaCegarLoop was constructing difference of abstraction (37232states) and FLOYD_HOARE automaton (currently 146 states, 69 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-15-2-3-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∨-2-2-2-1 context. - TimeoutResultAtElement [Line: 488]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 488). Cancelled while NwaCegarLoop was constructing difference of abstraction (37232states) and FLOYD_HOARE automaton (currently 146 states, 69 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-15-2-3-2-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∨-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 807 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 836.0s, OverallIterations: 34, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 712.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 mSolverCounterUnknown, 404304 SdHoareTripleChecker+Valid, 193.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 404304 mSDsluCounter, 395275 SdHoareTripleChecker+Invalid, 186.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 345534 mSDsCounter, 3311 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39894 IncrementalHoareTripleChecker+Invalid, 43237 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3311 mSolverCounterUnsat, 49741 mSDtfsCounter, 39894 mSolverCounterSat, 1.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5063 GetRequests, 2505 SyntacticMatches, 11 SemanticMatches, 2546 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170633 ImplicationChecksByTransitivity, 520.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37232occurred in iteration=33, InterpolantAutomatonStates: 1730, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 25.0s AutomataMinimizationTime, 33 MinimizatonAttempts, 88160 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 92.7s InterpolantComputationTime, 3619 NumberOfCodeBlocks, 3619 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 5037 ConstructedInterpolants, 4 QuantifiedInterpolants, 109895 SizeOfPredicates, 162 NumberOfNonLiveVariables, 6828 ConjunctsInSsa, 512 ConjunctsInUnsatCore, 70 InterpolantComputations, 16 PerfectInterpolantSequences, 1320/3384 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