/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_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 00:50:12,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 00:50:12,921 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 00:50:12,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 00:50:12,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 00:50:12,961 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 00:50:12,961 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 00:50:12,962 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 00:50:12,962 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 00:50:12,965 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 00:50:12,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 00:50:12,966 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 00:50:12,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 00:50:12,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 00:50:12,967 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 00:50:12,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 00:50:12,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 00:50:12,968 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 00:50:12,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 00:50:12,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 00:50:12,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 00:50:12,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 00:50:12,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 00:50:12,981 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 00:50:12,981 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 00:50:12,981 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 00:50:12,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 00:50:12,981 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 00:50:12,982 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 00:50:12,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 00:50:12,982 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 00:50:12,982 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 00:50:12,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:50:12,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 00:50:12,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 00:50:12,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 00:50:12,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 00:50:12,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 00:50:12,984 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 00:50:12,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 00:50:12,984 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 00:50:12,985 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 00:50:12,985 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 00:50:12,985 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 00:50:13,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 00:50:13,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 00:50:13,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 00:50:13,293 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 00:50:13,293 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 00:50:13,294 INFO L431 ainManager$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_label01.c [2023-12-16 00:50:14,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 00:50:14,793 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 00:50:14,794 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c [2023-12-16 00:50:14,818 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be5f714fe/ebf1b3e9a0024a32bbe88ea3c1761432/FLAGaf0d5c213 [2023-12-16 00:50:14,831 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be5f714fe/ebf1b3e9a0024a32bbe88ea3c1761432 [2023-12-16 00:50:14,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 00:50:14,834 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 00:50:14,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 00:50:14,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 00:50:14,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 00:50:14,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:50:14" (1/1) ... [2023-12-16 00:50:14,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d2f44df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:14, skipping insertion in model container [2023-12-16 00:50:14,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:50:14" (1/1) ... [2023-12-16 00:50:14,933 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 00:50:15,172 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_label01.c[6354,6367] [2023-12-16 00:50:15,210 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_label01.c[11909,11922] [2023-12-16 00:50:15,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:50:15,723 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 00:50:15,752 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_label01.c[6354,6367] [2023-12-16 00:50:15,759 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_label01.c[11909,11922] [2023-12-16 00:50:16,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 00:50:16,136 INFO L206 MainTranslator]: Completed translation [2023-12-16 00:50:16,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16 WrapperNode [2023-12-16 00:50:16,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 00:50:16,137 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 00:50:16,137 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 00:50:16,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 00:50:16,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16" (1/1) ... [2023-12-16 00:50:16,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16" (1/1) ... [2023-12-16 00:50:16,429 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4980 [2023-12-16 00:50:16,430 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 00:50:16,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 00:50:16,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 00:50:16,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 00:50:16,438 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16" (1/1) ... [2023-12-16 00:50:16,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16" (1/1) ... [2023-12-16 00:50:16,590 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16" (1/1) ... [2023-12-16 00:50:16,698 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]. [2023-12-16 00:50:16,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16" (1/1) ... [2023-12-16 00:50:16,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16" (1/1) ... [2023-12-16 00:50:16,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16" (1/1) ... [2023-12-16 00:50:16,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16" (1/1) ... [2023-12-16 00:50:16,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16" (1/1) ... [2023-12-16 00:50:16,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16" (1/1) ... [2023-12-16 00:50:16,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 00:50:16,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 00:50:16,877 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 00:50:16,877 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 00:50:16,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16" (1/1) ... [2023-12-16 00:50:16,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 00:50:16,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:50:16,930 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) [2023-12-16 00:50:16,963 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 [2023-12-16 00:50:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 00:50:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 00:50:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 00:50:16,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 00:50:17,077 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 00:50:17,079 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 00:50:20,084 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 00:50:20,119 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 00:50:20,119 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 00:50:20,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:50:20 BoogieIcfgContainer [2023-12-16 00:50:20,120 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 00:50:20,121 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 00:50:20,121 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 00:50:20,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 00:50:20,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:50:14" (1/3) ... [2023-12-16 00:50:20,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58743508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:50:20, skipping insertion in model container [2023-12-16 00:50:20,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:50:16" (2/3) ... [2023-12-16 00:50:20,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58743508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:50:20, skipping insertion in model container [2023-12-16 00:50:20,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:50:20" (3/3) ... [2023-12-16 00:50:20,125 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label01.c [2023-12-16 00:50:20,136 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 00:50:20,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-16 00:50:20,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 00:50:20,179 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;@41082dcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 00:50:20,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-16 00:50:20,185 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) [2023-12-16 00:50:20,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-16 00:50:20,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:20,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:50:20,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:20,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:20,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1841440842, now seen corresponding path program 1 times [2023-12-16 00:50:20,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:20,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784224091] [2023-12-16 00:50:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:20,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:20,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:20,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784224091] [2023-12-16 00:50:20,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784224091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:20,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:20,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:50:20,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885238959] [2023-12-16 00:50:20,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:20,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 00:50:20,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 00:50:20,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 00:50:20,343 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) [2023-12-16 00:50:20,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:20,434 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2023-12-16 00:50:20,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 00:50:20,437 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 [2023-12-16 00:50:20,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:20,448 INFO L225 Difference]: With dead ends: 1594 [2023-12-16 00:50:20,449 INFO L226 Difference]: Without dead ends: 803 [2023-12-16 00:50:20,453 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 [2023-12-16 00:50:20,454 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 [2023-12-16 00:50:20,455 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] [2023-12-16 00:50:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-16 00:50:20,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-12-16 00:50:20,496 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) [2023-12-16 00:50:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-12-16 00:50:20,498 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-12-16 00:50:20,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:20,499 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-12-16 00:50:20,499 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) [2023-12-16 00:50:20,499 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-12-16 00:50:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-16 00:50:20,499 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:20,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:50:20,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 00:50:20,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:20,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:20,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1254634828, now seen corresponding path program 1 times [2023-12-16 00:50:20,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:20,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255218359] [2023-12-16 00:50:20,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:20,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:20,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:20,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:20,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255218359] [2023-12-16 00:50:20,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255218359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:20,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:20,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:50:20,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965246640] [2023-12-16 00:50:20,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:20,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:50:20,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:20,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:50:20,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:50:20,604 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) [2023-12-16 00:50:20,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:20,652 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2023-12-16 00:50:20,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:50:20,653 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 [2023-12-16 00:50:20,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:20,655 INFO L225 Difference]: With dead ends: 864 [2023-12-16 00:50:20,655 INFO L226 Difference]: Without dead ends: 832 [2023-12-16 00:50:20,656 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 [2023-12-16 00:50:20,656 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 [2023-12-16 00:50:20,657 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] [2023-12-16 00:50:20,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-16 00:50:20,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2023-12-16 00:50:20,667 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) [2023-12-16 00:50:20,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-12-16 00:50:20,669 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-12-16 00:50:20,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:20,669 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-12-16 00:50:20,669 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) [2023-12-16 00:50:20,669 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-12-16 00:50:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-16 00:50:20,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:20,670 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] [2023-12-16 00:50:20,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 00:50:20,670 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:20,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:20,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1671741616, now seen corresponding path program 1 times [2023-12-16 00:50:20,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:20,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238118587] [2023-12-16 00:50:20,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:20,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:20,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:20,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238118587] [2023-12-16 00:50:20,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238118587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:20,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:20,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:50:20,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395665435] [2023-12-16 00:50:20,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:20,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:50:20,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:20,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:50:20,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:50:20,753 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) [2023-12-16 00:50:20,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:20,870 INFO L93 Difference]: Finished difference Result 977 states and 1781 transitions. [2023-12-16 00:50:20,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 00:50:20,870 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 [2023-12-16 00:50:20,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:20,876 INFO L225 Difference]: With dead ends: 977 [2023-12-16 00:50:20,876 INFO L226 Difference]: Without dead ends: 948 [2023-12-16 00:50:20,876 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 [2023-12-16 00:50:20,880 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2023-12-16 00:50:20,881 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] [2023-12-16 00:50:20,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-12-16 00:50:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 830. [2023-12-16 00:50:20,892 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) [2023-12-16 00:50:20,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1548 transitions. [2023-12-16 00:50:20,897 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1548 transitions. Word has length 32 [2023-12-16 00:50:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:20,901 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1548 transitions. [2023-12-16 00:50:20,901 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) [2023-12-16 00:50:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1548 transitions. [2023-12-16 00:50:20,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 00:50:20,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:20,905 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] [2023-12-16 00:50:20,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 00:50:20,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:20,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:20,906 INFO L85 PathProgramCache]: Analyzing trace with hash -349537184, now seen corresponding path program 1 times [2023-12-16 00:50:20,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:20,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773998823] [2023-12-16 00:50:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:20,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:20,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:20,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773998823] [2023-12-16 00:50:20,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773998823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:20,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:20,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:20,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702998190] [2023-12-16 00:50:20,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:20,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:20,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:20,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:20,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:20,953 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) [2023-12-16 00:50:20,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:20,981 INFO L93 Difference]: Finished difference Result 931 states and 1707 transitions. [2023-12-16 00:50:20,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:20,981 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 [2023-12-16 00:50:20,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:20,984 INFO L225 Difference]: With dead ends: 931 [2023-12-16 00:50:20,984 INFO L226 Difference]: Without dead ends: 875 [2023-12-16 00:50:20,984 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 [2023-12-16 00:50:20,990 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 [2023-12-16 00:50:20,991 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] [2023-12-16 00:50:20,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-16 00:50:21,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-16 00:50:21,064 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) [2023-12-16 00:50:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1614 transitions. [2023-12-16 00:50:21,066 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1614 transitions. Word has length 34 [2023-12-16 00:50:21,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:21,066 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1614 transitions. [2023-12-16 00:50:21,066 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) [2023-12-16 00:50:21,066 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1614 transitions. [2023-12-16 00:50:21,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 00:50:21,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:21,067 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] [2023-12-16 00:50:21,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 00:50:21,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:21,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:21,068 INFO L85 PathProgramCache]: Analyzing trace with hash -347392232, now seen corresponding path program 1 times [2023-12-16 00:50:21,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:21,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993828277] [2023-12-16 00:50:21,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:21,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:21,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:21,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993828277] [2023-12-16 00:50:21,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993828277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:21,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:21,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:50:21,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832528986] [2023-12-16 00:50:21,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:21,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:50:21,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:21,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:50:21,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:50:21,164 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) [2023-12-16 00:50:21,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:21,220 INFO L93 Difference]: Finished difference Result 974 states and 1770 transitions. [2023-12-16 00:50:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 00:50:21,220 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 [2023-12-16 00:50:21,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:21,223 INFO L225 Difference]: With dead ends: 974 [2023-12-16 00:50:21,223 INFO L226 Difference]: Without dead ends: 875 [2023-12-16 00:50:21,223 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 [2023-12-16 00:50:21,224 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 [2023-12-16 00:50:21,224 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] [2023-12-16 00:50:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-16 00:50:21,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-16 00:50:21,234 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) [2023-12-16 00:50:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1612 transitions. [2023-12-16 00:50:21,235 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1612 transitions. Word has length 34 [2023-12-16 00:50:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:21,236 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1612 transitions. [2023-12-16 00:50:21,236 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) [2023-12-16 00:50:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1612 transitions. [2023-12-16 00:50:21,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 00:50:21,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:21,237 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] [2023-12-16 00:50:21,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 00:50:21,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:21,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1987359035, now seen corresponding path program 1 times [2023-12-16 00:50:21,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:21,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005145731] [2023-12-16 00:50:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:21,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:21,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:21,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005145731] [2023-12-16 00:50:21,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005145731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:21,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:21,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 00:50:21,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440354654] [2023-12-16 00:50:21,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:21,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 00:50:21,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:21,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 00:50:21,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 00:50:21,325 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) [2023-12-16 00:50:21,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:21,357 INFO L93 Difference]: Finished difference Result 881 states and 1621 transitions. [2023-12-16 00:50:21,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 00:50:21,357 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 [2023-12-16 00:50:21,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:21,360 INFO L225 Difference]: With dead ends: 881 [2023-12-16 00:50:21,360 INFO L226 Difference]: Without dead ends: 879 [2023-12-16 00:50:21,360 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 [2023-12-16 00:50:21,361 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 [2023-12-16 00:50:21,361 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] [2023-12-16 00:50:21,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-12-16 00:50:21,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2023-12-16 00:50:21,371 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) [2023-12-16 00:50:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1615 transitions. [2023-12-16 00:50:21,373 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1615 transitions. Word has length 35 [2023-12-16 00:50:21,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:21,374 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1615 transitions. [2023-12-16 00:50:21,374 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) [2023-12-16 00:50:21,374 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1615 transitions. [2023-12-16 00:50:21,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 00:50:21,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:21,374 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] [2023-12-16 00:50:21,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 00:50:21,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:21,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:21,375 INFO L85 PathProgramCache]: Analyzing trace with hash 177158552, now seen corresponding path program 1 times [2023-12-16 00:50:21,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:21,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067459598] [2023-12-16 00:50:21,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:21,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:21,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:21,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067459598] [2023-12-16 00:50:21,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067459598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:21,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:21,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:21,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263102052] [2023-12-16 00:50:21,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:21,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:21,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:21,405 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) [2023-12-16 00:50:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:21,428 INFO L93 Difference]: Finished difference Result 991 states and 1788 transitions. [2023-12-16 00:50:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:21,429 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 [2023-12-16 00:50:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:21,432 INFO L225 Difference]: With dead ends: 991 [2023-12-16 00:50:21,432 INFO L226 Difference]: Without dead ends: 931 [2023-12-16 00:50:21,432 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 [2023-12-16 00:50:21,433 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 [2023-12-16 00:50:21,433 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] [2023-12-16 00:50:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-16 00:50:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2023-12-16 00:50:21,446 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) [2023-12-16 00:50:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1692 transitions. [2023-12-16 00:50:21,448 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1692 transitions. Word has length 36 [2023-12-16 00:50:21,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:21,448 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1692 transitions. [2023-12-16 00:50:21,448 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) [2023-12-16 00:50:21,448 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1692 transitions. [2023-12-16 00:50:21,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 00:50:21,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:21,448 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] [2023-12-16 00:50:21,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 00:50:21,449 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:21,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:21,449 INFO L85 PathProgramCache]: Analyzing trace with hash -448497512, now seen corresponding path program 1 times [2023-12-16 00:50:21,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:21,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270240087] [2023-12-16 00:50:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:21,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:21,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:21,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270240087] [2023-12-16 00:50:21,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270240087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:21,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:21,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:21,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582732709] [2023-12-16 00:50:21,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:21,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:21,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:21,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:21,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:21,488 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) [2023-12-16 00:50:21,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:21,509 INFO L93 Difference]: Finished difference Result 1211 states and 2112 transitions. [2023-12-16 00:50:21,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:21,510 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 [2023-12-16 00:50:21,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:21,513 INFO L225 Difference]: With dead ends: 1211 [2023-12-16 00:50:21,513 INFO L226 Difference]: Without dead ends: 1058 [2023-12-16 00:50:21,513 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 [2023-12-16 00:50:21,514 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 [2023-12-16 00:50:21,514 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] [2023-12-16 00:50:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2023-12-16 00:50:21,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1056. [2023-12-16 00:50:21,527 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) [2023-12-16 00:50:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1874 transitions. [2023-12-16 00:50:21,529 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1874 transitions. Word has length 36 [2023-12-16 00:50:21,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:21,530 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1874 transitions. [2023-12-16 00:50:21,530 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) [2023-12-16 00:50:21,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1874 transitions. [2023-12-16 00:50:21,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 00:50:21,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:21,531 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] [2023-12-16 00:50:21,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 00:50:21,531 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:21,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:21,532 INFO L85 PathProgramCache]: Analyzing trace with hash 440235928, now seen corresponding path program 1 times [2023-12-16 00:50:21,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:21,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032039020] [2023-12-16 00:50:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:21,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:21,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:21,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032039020] [2023-12-16 00:50:21,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032039020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:21,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:21,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:21,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064381205] [2023-12-16 00:50:21,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:21,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:21,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:21,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:21,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:21,569 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) [2023-12-16 00:50:21,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:21,605 INFO L93 Difference]: Finished difference Result 1568 states and 2616 transitions. [2023-12-16 00:50:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:21,605 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 [2023-12-16 00:50:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:21,610 INFO L225 Difference]: With dead ends: 1568 [2023-12-16 00:50:21,610 INFO L226 Difference]: Without dead ends: 1288 [2023-12-16 00:50:21,610 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 [2023-12-16 00:50:21,611 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 [2023-12-16 00:50:21,612 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] [2023-12-16 00:50:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-12-16 00:50:21,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2023-12-16 00:50:21,630 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) [2023-12-16 00:50:21,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2190 transitions. [2023-12-16 00:50:21,633 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2190 transitions. Word has length 36 [2023-12-16 00:50:21,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:21,633 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 2190 transitions. [2023-12-16 00:50:21,633 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) [2023-12-16 00:50:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2190 transitions. [2023-12-16 00:50:21,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-16 00:50:21,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:21,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 00:50:21,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 00:50:21,634 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:21,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:21,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1865855631, now seen corresponding path program 1 times [2023-12-16 00:50:21,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:21,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575717362] [2023-12-16 00:50:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:21,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:21,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:21,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:21,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575717362] [2023-12-16 00:50:21,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575717362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:21,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:21,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 00:50:21,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104597377] [2023-12-16 00:50:21,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:21,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:21,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:21,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:21,709 INFO L87 Difference]: Start difference. First operand 1286 states and 2190 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 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) [2023-12-16 00:50:24,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:24,541 INFO L93 Difference]: Finished difference Result 2790 states and 5063 transitions. [2023-12-16 00:50:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:24,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 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 47 [2023-12-16 00:50:24,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:24,551 INFO L225 Difference]: With dead ends: 2790 [2023-12-16 00:50:24,551 INFO L226 Difference]: Without dead ends: 2037 [2023-12-16 00:50:24,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:24,552 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 834 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:24,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 140 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-16 00:50:24,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2023-12-16 00:50:24,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2037. [2023-12-16 00:50:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2037 states, 2035 states have (on average 1.7518427518427517) internal successors, (3565), 2036 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2037 states to 2037 states and 3565 transitions. [2023-12-16 00:50:24,618 INFO L78 Accepts]: Start accepts. Automaton has 2037 states and 3565 transitions. Word has length 47 [2023-12-16 00:50:24,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:24,618 INFO L495 AbstractCegarLoop]: Abstraction has 2037 states and 3565 transitions. [2023-12-16 00:50:24,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 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) [2023-12-16 00:50:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2037 states and 3565 transitions. [2023-12-16 00:50:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 00:50:24,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:24,619 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] [2023-12-16 00:50:24,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 00:50:24,620 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:24,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:24,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1612908441, now seen corresponding path program 1 times [2023-12-16 00:50:24,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:24,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642817984] [2023-12-16 00:50:24,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:24,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:50:24,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:24,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642817984] [2023-12-16 00:50:24,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642817984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:24,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:24,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:50:24,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482338677] [2023-12-16 00:50:24,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:24,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:50:24,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:24,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:50:24,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:50:24,726 INFO L87 Difference]: Start difference. First operand 2037 states and 3565 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) [2023-12-16 00:50:24,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:24,809 INFO L93 Difference]: Finished difference Result 3545 states and 5717 transitions. [2023-12-16 00:50:24,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 00:50:24,810 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 [2023-12-16 00:50:24,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:24,819 INFO L225 Difference]: With dead ends: 3545 [2023-12-16 00:50:24,819 INFO L226 Difference]: Without dead ends: 3175 [2023-12-16 00:50:24,820 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 [2023-12-16 00:50:24,820 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 3033 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:24,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3141 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:24,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2023-12-16 00:50:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2477. [2023-12-16 00:50:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.690909090909091) internal successors, (4185), 2476 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4185 transitions. [2023-12-16 00:50:24,876 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4185 transitions. Word has length 50 [2023-12-16 00:50:24,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:24,877 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 4185 transitions. [2023-12-16 00:50:24,877 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) [2023-12-16 00:50:24,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4185 transitions. [2023-12-16 00:50:24,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 00:50:24,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:24,878 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] [2023-12-16 00:50:24,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 00:50:24,878 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:24,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:24,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2056402791, now seen corresponding path program 1 times [2023-12-16 00:50:24,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:24,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173038114] [2023-12-16 00:50:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:24,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 00:50:24,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:24,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173038114] [2023-12-16 00:50:24,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173038114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:24,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:24,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:50:24,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699550147] [2023-12-16 00:50:24,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:24,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:50:24,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:24,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:50:24,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:50:24,970 INFO L87 Difference]: Start difference. First operand 2477 states and 4185 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) [2023-12-16 00:50:25,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:25,062 INFO L93 Difference]: Finished difference Result 4053 states and 6437 transitions. [2023-12-16 00:50:25,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 00:50:25,062 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 [2023-12-16 00:50:25,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:25,072 INFO L225 Difference]: With dead ends: 4053 [2023-12-16 00:50:25,072 INFO L226 Difference]: Without dead ends: 3543 [2023-12-16 00:50:25,074 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 [2023-12-16 00:50:25,074 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 3033 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:25,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 3140 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 00:50:25,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2023-12-16 00:50:25,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3169. [2023-12-16 00:50:25,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.6283549100094727) internal successors, (5157), 3168 states have internal predecessors, (5157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5157 transitions. [2023-12-16 00:50:25,143 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5157 transitions. Word has length 50 [2023-12-16 00:50:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:25,144 INFO L495 AbstractCegarLoop]: Abstraction has 3169 states and 5157 transitions. [2023-12-16 00:50:25,144 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) [2023-12-16 00:50:25,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5157 transitions. [2023-12-16 00:50:25,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 00:50:25,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:25,145 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] [2023-12-16 00:50:25,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 00:50:25,145 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:25,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:25,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1349831065, now seen corresponding path program 1 times [2023-12-16 00:50:25,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:25,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16071690] [2023-12-16 00:50:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:25,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 00:50:25,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:25,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16071690] [2023-12-16 00:50:25,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16071690] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:25,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:25,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 00:50:25,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979930484] [2023-12-16 00:50:25,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:25,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 00:50:25,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:25,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 00:50:25,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 00:50:25,201 INFO L87 Difference]: Start difference. First operand 3169 states and 5157 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) [2023-12-16 00:50:25,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:25,325 INFO L93 Difference]: Finished difference Result 4561 states and 7153 transitions. [2023-12-16 00:50:25,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 00:50:25,326 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 [2023-12-16 00:50:25,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:25,337 INFO L225 Difference]: With dead ends: 4561 [2023-12-16 00:50:25,337 INFO L226 Difference]: Without dead ends: 4051 [2023-12-16 00:50:25,339 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 [2023-12-16 00:50:25,340 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 [2023-12-16 00:50:25,340 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] [2023-12-16 00:50:25,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4051 states. [2023-12-16 00:50:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4051 to 3677. [2023-12-16 00:50:25,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3675 states have (on average 1.598095238095238) internal successors, (5873), 3676 states have internal predecessors, (5873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:25,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5873 transitions. [2023-12-16 00:50:25,411 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5873 transitions. Word has length 50 [2023-12-16 00:50:25,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:25,411 INFO L495 AbstractCegarLoop]: Abstraction has 3677 states and 5873 transitions. [2023-12-16 00:50:25,411 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) [2023-12-16 00:50:25,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5873 transitions. [2023-12-16 00:50:25,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 00:50:25,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:25,412 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] [2023-12-16 00:50:25,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 00:50:25,412 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:25,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:25,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1978344379, now seen corresponding path program 1 times [2023-12-16 00:50:25,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:25,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155550113] [2023-12-16 00:50:25,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:25,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:25,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:25,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155550113] [2023-12-16 00:50:25,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155550113] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:25,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:25,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:25,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524559449] [2023-12-16 00:50:25,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:25,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:25,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:25,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:25,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:25,472 INFO L87 Difference]: Start difference. First operand 3677 states and 5873 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) [2023-12-16 00:50:25,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:25,519 INFO L93 Difference]: Finished difference Result 5829 states and 8911 transitions. [2023-12-16 00:50:25,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:25,519 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 [2023-12-16 00:50:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:25,541 INFO L225 Difference]: With dead ends: 5829 [2023-12-16 00:50:25,541 INFO L226 Difference]: Without dead ends: 3679 [2023-12-16 00:50:25,544 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 [2023-12-16 00:50:25,544 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 [2023-12-16 00:50:25,544 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] [2023-12-16 00:50:25,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2023-12-16 00:50:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3677. [2023-12-16 00:50:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3677 states, 3675 states have (on average 1.5844897959183672) internal successors, (5823), 3676 states have internal predecessors, (5823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5823 transitions. [2023-12-16 00:50:25,622 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5823 transitions. Word has length 51 [2023-12-16 00:50:25,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:25,622 INFO L495 AbstractCegarLoop]: Abstraction has 3677 states and 5823 transitions. [2023-12-16 00:50:25,623 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) [2023-12-16 00:50:25,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5823 transitions. [2023-12-16 00:50:25,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 00:50:25,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:25,623 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] [2023-12-16 00:50:25,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 00:50:25,624 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:25,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:25,624 INFO L85 PathProgramCache]: Analyzing trace with hash 396658031, now seen corresponding path program 1 times [2023-12-16 00:50:25,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:25,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954314245] [2023-12-16 00:50:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:25,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:25,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:25,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954314245] [2023-12-16 00:50:25,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954314245] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:25,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:25,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:25,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051295617] [2023-12-16 00:50:25,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:25,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:25,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:25,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:25,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:25,679 INFO L87 Difference]: Start difference. First operand 3677 states and 5823 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) [2023-12-16 00:50:25,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:25,712 INFO L93 Difference]: Finished difference Result 4523 states and 7010 transitions. [2023-12-16 00:50:25,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:25,712 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 [2023-12-16 00:50:25,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:25,716 INFO L225 Difference]: With dead ends: 4523 [2023-12-16 00:50:25,716 INFO L226 Difference]: Without dead ends: 2373 [2023-12-16 00:50:25,720 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 [2023-12-16 00:50:25,720 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 [2023-12-16 00:50:25,721 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] [2023-12-16 00:50:25,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2023-12-16 00:50:25,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2366. [2023-12-16 00:50:25,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 2364 states have (on average 1.6912013536379018) internal successors, (3998), 2365 states have internal predecessors, (3998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 3998 transitions. [2023-12-16 00:50:25,766 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 3998 transitions. Word has length 52 [2023-12-16 00:50:25,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:25,766 INFO L495 AbstractCegarLoop]: Abstraction has 2366 states and 3998 transitions. [2023-12-16 00:50:25,766 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) [2023-12-16 00:50:25,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 3998 transitions. [2023-12-16 00:50:25,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 00:50:25,767 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:25,767 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] [2023-12-16 00:50:25,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 00:50:25,767 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:25,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:25,767 INFO L85 PathProgramCache]: Analyzing trace with hash -230503927, now seen corresponding path program 1 times [2023-12-16 00:50:25,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:25,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762116846] [2023-12-16 00:50:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:25,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:25,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:25,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762116846] [2023-12-16 00:50:25,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762116846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 00:50:25,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 00:50:25,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 00:50:25,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505224536] [2023-12-16 00:50:25,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 00:50:25,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 00:50:25,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:25,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 00:50:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 00:50:25,816 INFO L87 Difference]: Start difference. First operand 2366 states and 3998 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) [2023-12-16 00:50:25,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:25,841 INFO L93 Difference]: Finished difference Result 2784 states and 4576 transitions. [2023-12-16 00:50:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 00:50:25,842 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 [2023-12-16 00:50:25,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:25,845 INFO L225 Difference]: With dead ends: 2784 [2023-12-16 00:50:25,845 INFO L226 Difference]: Without dead ends: 1954 [2023-12-16 00:50:25,847 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 [2023-12-16 00:50:25,847 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 [2023-12-16 00:50:25,847 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] [2023-12-16 00:50:25,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2023-12-16 00:50:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1952. [2023-12-16 00:50:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1950 states have (on average 1.7502564102564102) internal successors, (3413), 1951 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3413 transitions. [2023-12-16 00:50:25,878 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3413 transitions. Word has length 53 [2023-12-16 00:50:25,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:25,878 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 3413 transitions. [2023-12-16 00:50:25,878 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) [2023-12-16 00:50:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3413 transitions. [2023-12-16 00:50:25,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 00:50:25,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:25,878 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] [2023-12-16 00:50:25,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 00:50:25,879 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:25,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:25,879 INFO L85 PathProgramCache]: Analyzing trace with hash 796015063, now seen corresponding path program 1 times [2023-12-16 00:50:25,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:25,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99187293] [2023-12-16 00:50:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:25,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:26,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:26,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99187293] [2023-12-16 00:50:26,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99187293] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:50:26,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402343675] [2023-12-16 00:50:26,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:26,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:50:26,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:50:27,016 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) [2023-12-16 00:50:27,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 00:50:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:27,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 00:50:27,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:50:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:50:27,244 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:50:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 00:50:27,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402343675] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:50:27,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:50:27,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-16 00:50:27,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702966141] [2023-12-16 00:50:27,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:50:27,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 00:50:27,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:27,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 00:50:27,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-16 00:50:27,436 INFO L87 Difference]: Start difference. First operand 1952 states and 3413 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) [2023-12-16 00:50:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:28,873 INFO L93 Difference]: Finished difference Result 4051 states and 6165 transitions. [2023-12-16 00:50:28,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-16 00:50:28,874 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 [2023-12-16 00:50:28,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:28,878 INFO L225 Difference]: With dead ends: 4051 [2023-12-16 00:50:28,878 INFO L226 Difference]: Without dead ends: 3635 [2023-12-16 00:50:28,880 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 [2023-12-16 00:50:28,880 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 12333 mSDsluCounter, 6177 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12333 SdHoareTripleChecker+Valid, 7668 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:28,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12333 Valid, 7668 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 00:50:28,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2023-12-16 00:50:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3423. [2023-12-16 00:50:28,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3423 states, 3421 states have (on average 1.5396083016661795) internal successors, (5267), 3422 states have internal predecessors, (5267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 5267 transitions. [2023-12-16 00:50:28,942 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 5267 transitions. Word has length 55 [2023-12-16 00:50:28,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:28,942 INFO L495 AbstractCegarLoop]: Abstraction has 3423 states and 5267 transitions. [2023-12-16 00:50:28,942 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) [2023-12-16 00:50:28,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 5267 transitions. [2023-12-16 00:50:28,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 00:50:28,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:28,944 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] [2023-12-16 00:50:28,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 00:50:29,149 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,SelfDestructingSolverStorable16 [2023-12-16 00:50:29,149 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:29,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:29,150 INFO L85 PathProgramCache]: Analyzing trace with hash -315121631, now seen corresponding path program 1 times [2023-12-16 00:50:29,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:29,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540956619] [2023-12-16 00:50:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:29,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:29,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:29,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540956619] [2023-12-16 00:50:29,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540956619] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:50:29,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167999266] [2023-12-16 00:50:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:29,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:50:29,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:50:29,518 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) [2023-12-16 00:50:29,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 00:50:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:29,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:50:29,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:50:29,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:29,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:50:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:30,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167999266] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:50:30,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:50:30,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-16 00:50:30,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145866185] [2023-12-16 00:50:30,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:50:30,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 00:50:30,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:30,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 00:50:30,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-16 00:50:30,970 INFO L87 Difference]: Start difference. First operand 3423 states and 5267 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) [2023-12-16 00:50:31,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:31,507 INFO L93 Difference]: Finished difference Result 6752 states and 9499 transitions. [2023-12-16 00:50:31,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 00:50:31,507 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 [2023-12-16 00:50:31,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:31,514 INFO L225 Difference]: With dead ends: 6752 [2023-12-16 00:50:31,514 INFO L226 Difference]: Without dead ends: 5173 [2023-12-16 00:50:31,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2023-12-16 00:50:31,517 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 12120 mSDsluCounter, 9052 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12120 SdHoareTripleChecker+Valid, 10537 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:31,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12120 Valid, 10537 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 00:50:31,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5173 states. [2023-12-16 00:50:31,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5173 to 4963. [2023-12-16 00:50:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4963 states, 4961 states have (on average 1.4557548881273936) internal successors, (7222), 4962 states have internal predecessors, (7222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:31,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4963 states to 4963 states and 7222 transitions. [2023-12-16 00:50:31,621 INFO L78 Accepts]: Start accepts. Automaton has 4963 states and 7222 transitions. Word has length 56 [2023-12-16 00:50:31,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:31,622 INFO L495 AbstractCegarLoop]: Abstraction has 4963 states and 7222 transitions. [2023-12-16 00:50:31,622 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) [2023-12-16 00:50:31,622 INFO L276 IsEmpty]: Start isEmpty. Operand 4963 states and 7222 transitions. [2023-12-16 00:50:31,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 00:50:31,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:31,623 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] [2023-12-16 00:50:31,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 00:50:31,827 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,SelfDestructingSolverStorable17 [2023-12-16 00:50:31,829 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:31,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:31,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2010436385, now seen corresponding path program 1 times [2023-12-16 00:50:31,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:31,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208839522] [2023-12-16 00:50:31,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:31,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:32,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:32,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208839522] [2023-12-16 00:50:32,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208839522] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:50:32,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717399222] [2023-12-16 00:50:32,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:32,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:50:32,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:50:32,024 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) [2023-12-16 00:50:32,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 00:50:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:32,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:50:32,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:50:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:32,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:50:33,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:33,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717399222] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:50:33,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:50:33,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-16 00:50:33,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34269315] [2023-12-16 00:50:33,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:50:33,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-16 00:50:33,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:33,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-16 00:50:33,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-12-16 00:50:33,168 INFO L87 Difference]: Start difference. First operand 4963 states and 7222 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) [2023-12-16 00:50:33,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:33,797 INFO L93 Difference]: Finished difference Result 8312 states and 11498 transitions. [2023-12-16 00:50:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 00:50:33,798 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 [2023-12-16 00:50:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:33,804 INFO L225 Difference]: With dead ends: 8312 [2023-12-16 00:50:33,805 INFO L226 Difference]: Without dead ends: 5311 [2023-12-16 00:50:33,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2023-12-16 00:50:33,808 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 16513 mSDsluCounter, 6240 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16513 SdHoareTripleChecker+Valid, 7733 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:33,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16513 Valid, 7733 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 00:50:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2023-12-16 00:50:33,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 5023. [2023-12-16 00:50:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5023 states, 5021 states have (on average 1.4423421629157538) internal successors, (7242), 5022 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 7242 transitions. [2023-12-16 00:50:33,935 INFO L78 Accepts]: Start accepts. Automaton has 5023 states and 7242 transitions. Word has length 56 [2023-12-16 00:50:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:33,935 INFO L495 AbstractCegarLoop]: Abstraction has 5023 states and 7242 transitions. [2023-12-16 00:50:33,936 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) [2023-12-16 00:50:33,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5023 states and 7242 transitions. [2023-12-16 00:50:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-16 00:50:33,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:33,937 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] [2023-12-16 00:50:33,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 00:50:34,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:50:34,142 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:34,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1055635935, now seen corresponding path program 1 times [2023-12-16 00:50:34,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:34,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688632060] [2023-12-16 00:50:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:34,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:34,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:34,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688632060] [2023-12-16 00:50:34,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688632060] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:50:34,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130092440] [2023-12-16 00:50:34,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:34,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:50:34,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:50:34,397 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) [2023-12-16 00:50:34,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 00:50:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:34,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 00:50:34,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:50:34,950 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:34,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:50:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:35,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130092440] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:50:35,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:50:35,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-16 00:50:35,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094626361] [2023-12-16 00:50:35,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:50:35,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-16 00:50:35,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:35,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-16 00:50:35,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-16 00:50:35,554 INFO L87 Difference]: Start difference. First operand 5023 states and 7242 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) [2023-12-16 00:50:36,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 00:50:36,208 INFO L93 Difference]: Finished difference Result 11604 states and 15525 transitions. [2023-12-16 00:50:36,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 00:50:36,208 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 [2023-12-16 00:50:36,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 00:50:36,224 INFO L225 Difference]: With dead ends: 11604 [2023-12-16 00:50:36,224 INFO L226 Difference]: Without dead ends: 8842 [2023-12-16 00:50:36,229 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 [2023-12-16 00:50:36,229 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 10443 mSDsluCounter, 6155 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10443 SdHoareTripleChecker+Valid, 7639 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 00:50:36,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10443 Valid, 7639 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 00:50:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8842 states. [2023-12-16 00:50:36,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 8322. [2023-12-16 00:50:36,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8322 states, 8320 states have (on average 1.353846153846154) internal successors, (11264), 8321 states have internal predecessors, (11264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 00:50:36,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8322 states to 8322 states and 11264 transitions. [2023-12-16 00:50:36,412 INFO L78 Accepts]: Start accepts. Automaton has 8322 states and 11264 transitions. Word has length 56 [2023-12-16 00:50:36,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 00:50:36,412 INFO L495 AbstractCegarLoop]: Abstraction has 8322 states and 11264 transitions. [2023-12-16 00:50:36,412 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) [2023-12-16 00:50:36,412 INFO L276 IsEmpty]: Start isEmpty. Operand 8322 states and 11264 transitions. [2023-12-16 00:50:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 00:50:36,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 00:50:36,413 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] [2023-12-16 00:50:36,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 00:50:36,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:50:36,618 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 00:50:36,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 00:50:36,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1773329579, now seen corresponding path program 1 times [2023-12-16 00:50:36,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 00:50:36,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909544723] [2023-12-16 00:50:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:36,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 00:50:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:37,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 00:50:37,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909544723] [2023-12-16 00:50:37,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909544723] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 00:50:37,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496094862] [2023-12-16 00:50:37,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 00:50:37,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:50:37,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 00:50:37,170 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) [2023-12-16 00:50:37,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 00:50:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 00:50:37,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 00:50:37,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 00:50:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:39,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 00:50:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 00:50:41,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496094862] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 00:50:41,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 00:50:41,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 22] total 49 [2023-12-16 00:50:41,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712556322] [2023-12-16 00:50:41,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 00:50:41,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-16 00:50:41,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 00:50:41,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-16 00:50:41,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1982, Unknown=0, NotChecked=0, Total=2352 [2023-12-16 00:50:41,636 INFO L87 Difference]: Start difference. First operand 8322 states and 11264 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) Received shutdown request... [2023-12-16 00:51:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2023-12-16 00:51:19,440 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 [2023-12-16 00:51:19,440 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 00:51:19,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13588 ImplicationChecksByTransitivity, 37.7s TimeCoverageRelationStatistics Valid=7092, Invalid=28064, Unknown=0, NotChecked=0, Total=35156 [2023-12-16 00:51:19,442 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 4194 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4194 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 00:51:19,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4194 Valid, 2209 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 00:51:19,443 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-16 00:51:19,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 00:51:19,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 00:51:19,649 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (8322states) and FLOYD_HOARE automaton (currently 147 states, 49 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 188 known predicates. [2023-12-16 00:51:19,650 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-16 00:51:19,653 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] [2023-12-16 00:51:19,654 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 00:51:19,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 12:51:19 BoogieIcfgContainer [2023-12-16 00:51:19,656 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 00:51:19,656 INFO L158 Benchmark]: Toolchain (without parser) took 64822.13ms. Allocated memory was 267.4MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 199.8MB in the beginning and 554.6MB in the end (delta: -354.8MB). Peak memory consumption was 993.5MB. Max. memory is 8.0GB. [2023-12-16 00:51:19,657 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 222.3MB. Free memory was 173.7MB in the beginning and 173.5MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 00:51:19,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1300.42ms. Allocated memory is still 267.4MB. Free memory was 199.8MB in the beginning and 158.6MB in the end (delta: 41.2MB). Peak memory consumption was 87.7MB. Max. memory is 8.0GB. [2023-12-16 00:51:19,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 292.70ms. Allocated memory was 267.4MB in the beginning and 410.0MB in the end (delta: 142.6MB). Free memory was 158.6MB in the beginning and 283.4MB in the end (delta: -124.8MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-16 00:51:19,657 INFO L158 Benchmark]: Boogie Preprocessor took 445.45ms. Allocated memory is still 410.0MB. Free memory was 283.4MB in the beginning and 268.2MB in the end (delta: 15.2MB). Peak memory consumption was 62.4MB. Max. memory is 8.0GB. [2023-12-16 00:51:19,659 INFO L158 Benchmark]: RCFGBuilder took 3243.43ms. Allocated memory was 410.0MB in the beginning and 820.0MB in the end (delta: 410.0MB). Free memory was 268.2MB in the beginning and 525.1MB in the end (delta: -256.9MB). Peak memory consumption was 231.7MB. Max. memory is 8.0GB. [2023-12-16 00:51:19,659 INFO L158 Benchmark]: TraceAbstraction took 59534.53ms. Allocated memory was 820.0MB in the beginning and 1.6GB in the end (delta: 794.8MB). Free memory was 524.1MB in the beginning and 554.6MB in the end (delta: -30.6MB). Peak memory consumption was 763.7MB. Max. memory is 8.0GB. [2023-12-16 00:51:19,662 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 222.3MB. Free memory was 173.7MB in the beginning and 173.5MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1300.42ms. Allocated memory is still 267.4MB. Free memory was 199.8MB in the beginning and 158.6MB in the end (delta: 41.2MB). Peak memory consumption was 87.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 292.70ms. Allocated memory was 267.4MB in the beginning and 410.0MB in the end (delta: 142.6MB). Free memory was 158.6MB in the beginning and 283.4MB in the end (delta: -124.8MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 445.45ms. Allocated memory is still 410.0MB. Free memory was 283.4MB in the beginning and 268.2MB in the end (delta: 15.2MB). Peak memory consumption was 62.4MB. Max. memory is 8.0GB. * RCFGBuilder took 3243.43ms. Allocated memory was 410.0MB in the beginning and 820.0MB in the end (delta: 410.0MB). Free memory was 268.2MB in the beginning and 525.1MB in the end (delta: -256.9MB). Peak memory consumption was 231.7MB. Max. memory is 8.0GB. * TraceAbstraction took 59534.53ms. Allocated memory was 820.0MB in the beginning and 1.6GB in the end (delta: 794.8MB). Free memory was 524.1MB in the beginning and 554.6MB in the end (delta: -30.6MB). Peak memory consumption was 763.7MB. 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 (8322states) and FLOYD_HOARE automaton (currently 147 states, 49 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 188 known predicates. - TimeoutResultAtElement [Line: 449]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 449). Cancelled while NwaCegarLoop was constructing difference of abstraction (8322states) and FLOYD_HOARE automaton (currently 147 states, 49 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 188 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 807 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 59.5s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 45.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 80536 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 80536 mSDsluCounter, 74598 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45555 mSDsCounter, 1317 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6225 IncrementalHoareTripleChecker+Invalid, 7542 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1317 mSolverCounterUnsat, 29043 mSDtfsCounter, 6225 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 895 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15393 ImplicationChecksByTransitivity, 40.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8322occurred in iteration=20, InterpolantAutomatonStates: 156, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 2846 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 1190 NumberOfCodeBlocks, 1190 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1439 ConstructedInterpolants, 0 QuantifiedInterpolants, 16181 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1457 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 31 InterpolantComputations, 16 PerfectInterpolantSequences, 152/222 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