/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 00:04:33,141 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 00:04:33,186 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 00:04:33,194 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 00:04:33,194 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 00:04:33,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 00:04:33,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 00:04:33,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 00:04:33,225 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 00:04:33,227 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 00:04:33,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 00:04:33,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 00:04:33,229 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 00:04:33,229 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 00:04:33,230 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 00:04:33,230 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 00:04:33,230 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 00:04:33,230 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 00:04:33,230 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 00:04:33,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 00:04:33,231 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 00:04:33,231 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 00:04:33,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 00:04:33,231 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 00:04:33,231 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 00:04:33,232 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 00:04:33,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 00:04:33,232 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 00:04:33,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 00:04:33,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 00:04:33,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 00:04:33,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 00:04:33,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:04:33,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 00:04:33,234 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 00:04:33,234 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 00:04:33,234 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 00:04:33,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 00:04:33,234 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 00:04:33,234 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 00:04:33,235 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 00:04:33,235 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 00:04:33,235 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 00:04:33,235 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 00:04:33,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 00:04:33,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 00:04:33,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 00:04:33,446 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 00:04:33,447 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 00:04:33,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-19 00:04:34,578 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 00:04:34,915 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 00:04:34,916 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-19 00:04:34,942 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad0fe61a0/fe2e1a0a05724d268e0f740be41ba403/FLAGe1542bd76 [2023-12-19 00:04:34,960 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad0fe61a0/fe2e1a0a05724d268e0f740be41ba403 [2023-12-19 00:04:34,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 00:04:34,963 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 00:04:34,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 00:04:34,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 00:04:34,969 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 00:04:34,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:04:34" (1/1) ... [2023-12-19 00:04:34,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b83b737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:34, skipping insertion in model container [2023-12-19 00:04:34,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:04:34" (1/1) ... [2023-12-19 00:04:35,057 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 00:04:35,354 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[8786,8799] [2023-12-19 00:04:35,421 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[16076,16089] [2023-12-19 00:04:35,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:04:35,947 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 00:04:35,974 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[8786,8799] [2023-12-19 00:04:35,981 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.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[16076,16089] [2023-12-19 00:04:36,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:04:36,265 INFO L206 MainTranslator]: Completed translation [2023-12-19 00:04:36,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36 WrapperNode [2023-12-19 00:04:36,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 00:04:36,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 00:04:36,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 00:04:36,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 00:04:36,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36" (1/1) ... [2023-12-19 00:04:36,313 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36" (1/1) ... [2023-12-19 00:04:36,619 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5033 [2023-12-19 00:04:36,620 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 00:04:36,620 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 00:04:36,620 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 00:04:36,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 00:04:36,628 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36" (1/1) ... [2023-12-19 00:04:36,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36" (1/1) ... [2023-12-19 00:04:36,680 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36" (1/1) ... [2023-12-19 00:04:36,801 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]. [2023-12-19 00:04:36,802 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36" (1/1) ... [2023-12-19 00:04:36,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36" (1/1) ... [2023-12-19 00:04:36,902 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36" (1/1) ... [2023-12-19 00:04:36,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36" (1/1) ... [2023-12-19 00:04:36,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36" (1/1) ... [2023-12-19 00:04:36,975 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36" (1/1) ... [2023-12-19 00:04:37,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 00:04:37,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 00:04:37,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 00:04:37,033 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 00:04:37,034 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36" (1/1) ... [2023-12-19 00:04:37,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:04:37,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:04:37,055 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) [2023-12-19 00:04:37,056 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 [2023-12-19 00:04:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 00:04:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 00:04:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 00:04:37,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 00:04:37,170 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 00:04:37,172 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 00:04:40,044 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 00:04:40,093 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 00:04:40,093 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 00:04:40,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:04:40 BoogieIcfgContainer [2023-12-19 00:04:40,093 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 00:04:40,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 00:04:40,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 00:04:40,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 00:04:40,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:04:34" (1/3) ... [2023-12-19 00:04:40,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b2a0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:04:40, skipping insertion in model container [2023-12-19 00:04:40,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:04:36" (2/3) ... [2023-12-19 00:04:40,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b2a0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:04:40, skipping insertion in model container [2023-12-19 00:04:40,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:04:40" (3/3) ... [2023-12-19 00:04:40,101 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-12-19 00:04:40,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 00:04:40,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 00:04:40,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 00:04:40,158 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;@5c78feb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 00:04:40,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 00:04:40,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:40,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-19 00:04:40,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:40,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:40,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:40,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:40,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1425616648, now seen corresponding path program 1 times [2023-12-19 00:04:40,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:40,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760467107] [2023-12-19 00:04:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:40,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:40,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760467107] [2023-12-19 00:04:40,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760467107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:40,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:40,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:04:40,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281189516] [2023-12-19 00:04:40,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:40,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 00:04:40,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:40,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 00:04:40,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:04:40,377 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:40,456 INFO L93 Difference]: Finished difference Result 1612 states and 3179 transitions. [2023-12-19 00:04:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 00:04:40,460 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-19 00:04:40,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:40,476 INFO L225 Difference]: With dead ends: 1612 [2023-12-19 00:04:40,476 INFO L226 Difference]: Without dead ends: 816 [2023-12-19 00:04:40,482 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 [2023-12-19 00:04:40,486 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:40,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1544 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:40,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-19 00:04:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-19 00:04:40,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.898034398034398) internal successors, (1545), 815 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2023-12-19 00:04:40,533 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2023-12-19 00:04:40,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:40,533 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2023-12-19 00:04:40,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2023-12-19 00:04:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-19 00:04:40,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:40,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:40,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 00:04:40,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:40,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:40,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1589486970, now seen corresponding path program 1 times [2023-12-19 00:04:40,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:40,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447525830] [2023-12-19 00:04:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:40,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:40,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:40,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447525830] [2023-12-19 00:04:40,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447525830] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:40,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:40,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:04:40,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850401421] [2023-12-19 00:04:40,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:40,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:04:40,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:40,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:04:40,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:04:40,790 INFO L87 Difference]: Start difference. First operand 816 states and 1545 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:40,878 INFO L93 Difference]: Finished difference Result 854 states and 1604 transitions. [2023-12-19 00:04:40,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:04:40,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-12-19 00:04:40,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:40,882 INFO L225 Difference]: With dead ends: 854 [2023-12-19 00:04:40,882 INFO L226 Difference]: Without dead ends: 816 [2023-12-19 00:04:40,882 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 [2023-12-19 00:04:40,883 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 0 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:40,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4599 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:04:40,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2023-12-19 00:04:40,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2023-12-19 00:04:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.8697788697788698) internal successors, (1522), 815 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2023-12-19 00:04:40,898 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2023-12-19 00:04:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:40,899 INFO L495 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2023-12-19 00:04:40,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2023-12-19 00:04:40,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-19 00:04:40,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:40,900 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] [2023-12-19 00:04:40,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 00:04:40,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:40,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:40,900 INFO L85 PathProgramCache]: Analyzing trace with hash 775575541, now seen corresponding path program 1 times [2023-12-19 00:04:40,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:40,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44311680] [2023-12-19 00:04:40,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:40,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:40,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:40,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44311680] [2023-12-19 00:04:40,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44311680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:40,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:40,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:04:40,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868843636] [2023-12-19 00:04:40,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:40,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:04:40,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:40,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:04:40,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:04:40,973 INFO L87 Difference]: Start difference. First operand 816 states and 1522 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:41,112 INFO L93 Difference]: Finished difference Result 1096 states and 1970 transitions. [2023-12-19 00:04:41,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-19 00:04:41,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-19 00:04:41,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:41,116 INFO L225 Difference]: With dead ends: 1096 [2023-12-19 00:04:41,116 INFO L226 Difference]: Without dead ends: 1061 [2023-12-19 00:04:41,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:04:41,117 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:41,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:04:41,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2023-12-19 00:04:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 849. [2023-12-19 00:04:41,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.859504132231405) internal successors, (1575), 848 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1575 transitions. [2023-12-19 00:04:41,130 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1575 transitions. Word has length 41 [2023-12-19 00:04:41,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:41,130 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1575 transitions. [2023-12-19 00:04:41,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1575 transitions. [2023-12-19 00:04:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 00:04:41,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:41,131 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] [2023-12-19 00:04:41,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 00:04:41,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:41,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:41,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2119825339, now seen corresponding path program 1 times [2023-12-19 00:04:41,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:41,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784012109] [2023-12-19 00:04:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:41,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:41,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:41,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784012109] [2023-12-19 00:04:41,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784012109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:41,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:41,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:04:41,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856096122] [2023-12-19 00:04:41,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:41,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:04:41,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:41,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:04:41,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:04:41,176 INFO L87 Difference]: Start difference. First operand 849 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:41,198 INFO L93 Difference]: Finished difference Result 974 states and 1774 transitions. [2023-12-19 00:04:41,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:04:41,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-19 00:04:41,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:41,201 INFO L225 Difference]: With dead ends: 974 [2023-12-19 00:04:41,201 INFO L226 Difference]: Without dead ends: 906 [2023-12-19 00:04:41,201 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 [2023-12-19 00:04:41,202 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 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 [2023-12-19 00:04:41,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-19 00:04:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-19 00:04:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8414634146341464) internal successors, (1661), 903 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1661 transitions. [2023-12-19 00:04:41,214 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1661 transitions. Word has length 43 [2023-12-19 00:04:41,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:41,214 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1661 transitions. [2023-12-19 00:04:41,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,214 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1661 transitions. [2023-12-19 00:04:41,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 00:04:41,215 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:41,215 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] [2023-12-19 00:04:41,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 00:04:41,216 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:41,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2117680387, now seen corresponding path program 1 times [2023-12-19 00:04:41,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:41,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642186324] [2023-12-19 00:04:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:41,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:41,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:41,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642186324] [2023-12-19 00:04:41,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642186324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:41,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:41,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:04:41,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416515986] [2023-12-19 00:04:41,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:41,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:04:41,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:41,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:04:41,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:04:41,332 INFO L87 Difference]: Start difference. First operand 904 states and 1661 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:41,424 INFO L93 Difference]: Finished difference Result 1029 states and 1857 transitions. [2023-12-19 00:04:41,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:04:41,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-19 00:04:41,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:41,428 INFO L225 Difference]: With dead ends: 1029 [2023-12-19 00:04:41,428 INFO L226 Difference]: Without dead ends: 906 [2023-12-19 00:04:41,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-19 00:04:41,429 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 1488 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:41,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1719 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2023-12-19 00:04:41,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2023-12-19 00:04:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8392461197339247) internal successors, (1659), 903 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1659 transitions. [2023-12-19 00:04:41,442 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1659 transitions. Word has length 43 [2023-12-19 00:04:41,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:41,442 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1659 transitions. [2023-12-19 00:04:41,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1659 transitions. [2023-12-19 00:04:41,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-19 00:04:41,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:41,444 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] [2023-12-19 00:04:41,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 00:04:41,444 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:41,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:41,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1351966150, now seen corresponding path program 1 times [2023-12-19 00:04:41,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:41,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087193657] [2023-12-19 00:04:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:41,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:41,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:41,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087193657] [2023-12-19 00:04:41,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087193657] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:41,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:41,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:04:41,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141589550] [2023-12-19 00:04:41,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:41,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:04:41,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:41,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:04:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:04:41,575 INFO L87 Difference]: Start difference. First operand 904 states and 1659 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:41,603 INFO L93 Difference]: Finished difference Result 912 states and 1668 transitions. [2023-12-19 00:04:41,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:04:41,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-19 00:04:41,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:41,606 INFO L225 Difference]: With dead ends: 912 [2023-12-19 00:04:41,606 INFO L226 Difference]: Without dead ends: 910 [2023-12-19 00:04:41,606 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 [2023-12-19 00:04:41,607 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4546 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 [2023-12-19 00:04:41,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:41,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-19 00:04:41,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2023-12-19 00:04:41,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.8344370860927153) internal successors, (1662), 907 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1662 transitions. [2023-12-19 00:04:41,619 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1662 transitions. Word has length 44 [2023-12-19 00:04:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:41,619 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1662 transitions. [2023-12-19 00:04:41,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,619 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1662 transitions. [2023-12-19 00:04:41,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 00:04:41,620 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:41,620 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] [2023-12-19 00:04:41,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 00:04:41,620 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:41,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:41,620 INFO L85 PathProgramCache]: Analyzing trace with hash -302650947, now seen corresponding path program 1 times [2023-12-19 00:04:41,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:41,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950777456] [2023-12-19 00:04:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:41,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:41,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:41,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950777456] [2023-12-19 00:04:41,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950777456] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:41,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:41,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:04:41,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662329150] [2023-12-19 00:04:41,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:41,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:04:41,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:41,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:04:41,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:04:41,653 INFO L87 Difference]: Start difference. First operand 908 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2023-12-19 00:04:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:41,674 INFO L93 Difference]: Finished difference Result 1046 states and 1875 transitions. [2023-12-19 00:04:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:04:41,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 45 [2023-12-19 00:04:41,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:41,677 INFO L225 Difference]: With dead ends: 1046 [2023-12-19 00:04:41,677 INFO L226 Difference]: Without dead ends: 974 [2023-12-19 00:04:41,677 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 [2023-12-19 00:04:41,677 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 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 [2023-12-19 00:04:41,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:41,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-12-19 00:04:41,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2023-12-19 00:04:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 970 states have (on average 1.81340206185567) internal successors, (1759), 971 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1759 transitions. [2023-12-19 00:04:41,690 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1759 transitions. Word has length 45 [2023-12-19 00:04:41,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:41,690 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1759 transitions. [2023-12-19 00:04:41,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2023-12-19 00:04:41,691 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1759 transitions. [2023-12-19 00:04:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 00:04:41,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:41,691 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] [2023-12-19 00:04:41,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 00:04:41,691 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:41,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:41,692 INFO L85 PathProgramCache]: Analyzing trace with hash -888363075, now seen corresponding path program 1 times [2023-12-19 00:04:41,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:41,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188200815] [2023-12-19 00:04:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:41,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:41,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:41,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188200815] [2023-12-19 00:04:41,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188200815] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:41,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:41,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:04:41,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413782829] [2023-12-19 00:04:41,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:41,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:04:41,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:41,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:04:41,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:04:41,719 INFO L87 Difference]: Start difference. First operand 972 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2023-12-19 00:04:41,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:41,740 INFO L93 Difference]: Finished difference Result 1326 states and 2299 transitions. [2023-12-19 00:04:41,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:04:41,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 45 [2023-12-19 00:04:41,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:41,744 INFO L225 Difference]: With dead ends: 1326 [2023-12-19 00:04:41,744 INFO L226 Difference]: Without dead ends: 1137 [2023-12-19 00:04:41,745 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 [2023-12-19 00:04:41,745 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 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 [2023-12-19 00:04:41,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-12-19 00:04:41,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2023-12-19 00:04:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 1.766107678729038) internal successors, (2001), 1134 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2001 transitions. [2023-12-19 00:04:41,760 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2001 transitions. Word has length 45 [2023-12-19 00:04:41,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:41,760 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 2001 transitions. [2023-12-19 00:04:41,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2023-12-19 00:04:41,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2001 transitions. [2023-12-19 00:04:41,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 00:04:41,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:41,761 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] [2023-12-19 00:04:41,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 00:04:41,761 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:41,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:41,761 INFO L85 PathProgramCache]: Analyzing trace with hash 370365, now seen corresponding path program 1 times [2023-12-19 00:04:41,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:41,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483536098] [2023-12-19 00:04:41,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:41,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:41,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:41,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483536098] [2023-12-19 00:04:41,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483536098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:41,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:41,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:04:41,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15216828] [2023-12-19 00:04:41,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:41,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:04:41,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:41,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:04:41,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:04:41,788 INFO L87 Difference]: Start difference. First operand 1135 states and 2001 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2023-12-19 00:04:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:41,813 INFO L93 Difference]: Finished difference Result 1791 states and 2983 transitions. [2023-12-19 00:04:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:04:41,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 45 [2023-12-19 00:04:41,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:41,818 INFO L225 Difference]: With dead ends: 1791 [2023-12-19 00:04:41,818 INFO L226 Difference]: Without dead ends: 1439 [2023-12-19 00:04:41,818 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 [2023-12-19 00:04:41,819 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 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 [2023-12-19 00:04:41,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:41,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2023-12-19 00:04:41,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1437. [2023-12-19 00:04:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1435 states have (on average 1.6982578397212544) internal successors, (2437), 1436 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2437 transitions. [2023-12-19 00:04:41,840 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2437 transitions. Word has length 45 [2023-12-19 00:04:41,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:41,840 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 2437 transitions. [2023-12-19 00:04:41,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2023-12-19 00:04:41,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2437 transitions. [2023-12-19 00:04:41,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-19 00:04:41,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:41,840 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] [2023-12-19 00:04:41,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 00:04:41,841 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:41,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:41,841 INFO L85 PathProgramCache]: Analyzing trace with hash -262707011, now seen corresponding path program 1 times [2023-12-19 00:04:41,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:41,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399071351] [2023-12-19 00:04:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:41,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:41,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:41,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399071351] [2023-12-19 00:04:41,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399071351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:41,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:41,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:04:41,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963864545] [2023-12-19 00:04:41,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:41,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:04:41,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:41,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:04:41,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:04:41,869 INFO L87 Difference]: Start difference. First operand 1437 states and 2437 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2023-12-19 00:04:41,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:41,901 INFO L93 Difference]: Finished difference Result 2649 states and 4207 transitions. [2023-12-19 00:04:41,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:04:41,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 45 [2023-12-19 00:04:41,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:41,907 INFO L225 Difference]: With dead ends: 2649 [2023-12-19 00:04:41,907 INFO L226 Difference]: Without dead ends: 1995 [2023-12-19 00:04:41,908 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 [2023-12-19 00:04:41,908 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 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 [2023-12-19 00:04:41,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:41,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2023-12-19 00:04:41,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2023-12-19 00:04:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1991 states have (on average 1.6137619286790557) internal successors, (3213), 1992 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3213 transitions. [2023-12-19 00:04:41,940 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3213 transitions. Word has length 45 [2023-12-19 00:04:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:41,940 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 3213 transitions. [2023-12-19 00:04:41,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2023-12-19 00:04:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3213 transitions. [2023-12-19 00:04:41,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 00:04:41,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:41,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:41,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 00:04:41,941 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:41,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:41,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1070420117, now seen corresponding path program 1 times [2023-12-19 00:04:41,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:41,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979355534] [2023-12-19 00:04:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:41,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:04:42,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:42,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979355534] [2023-12-19 00:04:42,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979355534] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:42,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:42,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:04:42,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776447211] [2023-12-19 00:04:42,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:42,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:04:42,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:42,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:04:42,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:04:42,012 INFO L87 Difference]: Start difference. First operand 1993 states and 3213 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:42,135 INFO L93 Difference]: Finished difference Result 6755 states and 10074 transitions. [2023-12-19 00:04:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:04:42,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-19 00:04:42,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:42,150 INFO L225 Difference]: With dead ends: 6755 [2023-12-19 00:04:42,151 INFO L226 Difference]: Without dead ends: 5889 [2023-12-19 00:04:42,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:04:42,153 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4637 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:42,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3284 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:42,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5889 states. [2023-12-19 00:04:42,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5889 to 3033. [2023-12-19 00:04:42,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 3031 states have (on average 1.5483338832068625) internal successors, (4693), 3032 states have internal predecessors, (4693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:42,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4693 transitions. [2023-12-19 00:04:42,299 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4693 transitions. Word has length 61 [2023-12-19 00:04:42,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:42,299 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 4693 transitions. [2023-12-19 00:04:42,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:42,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4693 transitions. [2023-12-19 00:04:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 00:04:42,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:42,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:42,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 00:04:42,301 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:42,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:42,301 INFO L85 PathProgramCache]: Analyzing trace with hash 484707989, now seen corresponding path program 1 times [2023-12-19 00:04:42,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:42,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096434573] [2023-12-19 00:04:42,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:42,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 00:04:42,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:42,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096434573] [2023-12-19 00:04:42,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096434573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:42,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:42,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:04:42,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634048178] [2023-12-19 00:04:42,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:42,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:04:42,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:42,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:04:42,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:04:42,379 INFO L87 Difference]: Start difference. First operand 3033 states and 4693 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:42,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:42,546 INFO L93 Difference]: Finished difference Result 7963 states and 11802 transitions. [2023-12-19 00:04:42,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:04:42,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-19 00:04:42,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:42,564 INFO L225 Difference]: With dead ends: 7963 [2023-12-19 00:04:42,564 INFO L226 Difference]: Without dead ends: 6753 [2023-12-19 00:04:42,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:04:42,568 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4672 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:42,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3304 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:42,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6753 states. [2023-12-19 00:04:42,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6753 to 4673. [2023-12-19 00:04:42,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 4671 states have (on average 1.5031042603296938) internal successors, (7021), 4672 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7021 transitions. [2023-12-19 00:04:42,707 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7021 transitions. Word has length 61 [2023-12-19 00:04:42,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:42,707 INFO L495 AbstractCegarLoop]: Abstraction has 4673 states and 7021 transitions. [2023-12-19 00:04:42,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7021 transitions. [2023-12-19 00:04:42,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 00:04:42,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:42,709 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:42,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 00:04:42,709 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:42,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1373441429, now seen corresponding path program 1 times [2023-12-19 00:04:42,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:42,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003550159] [2023-12-19 00:04:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:42,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 00:04:42,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003550159] [2023-12-19 00:04:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003550159] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:42,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:42,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:04:42,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18811768] [2023-12-19 00:04:42,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:42,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:04:42,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:42,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:04:42,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:04:42,797 INFO L87 Difference]: Start difference. First operand 4673 states and 7021 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:42,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:42,993 INFO L93 Difference]: Finished difference Result 9171 states and 13522 transitions. [2023-12-19 00:04:42,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:04:42,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-19 00:04:42,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:43,007 INFO L225 Difference]: With dead ends: 9171 [2023-12-19 00:04:43,007 INFO L226 Difference]: Without dead ends: 7961 [2023-12-19 00:04:43,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:04:43,012 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 4667 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:43,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3318 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:04:43,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7961 states. [2023-12-19 00:04:43,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7961 to 5881. [2023-12-19 00:04:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5881 states, 5879 states have (on average 1.4868174859670011) internal successors, (8741), 5880 states have internal predecessors, (8741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:43,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 8741 transitions. [2023-12-19 00:04:43,210 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 8741 transitions. Word has length 61 [2023-12-19 00:04:43,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:43,210 INFO L495 AbstractCegarLoop]: Abstraction has 5881 states and 8741 transitions. [2023-12-19 00:04:43,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:43,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 8741 transitions. [2023-12-19 00:04:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-19 00:04:43,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:43,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:43,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 00:04:43,211 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:43,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:43,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1110364053, now seen corresponding path program 1 times [2023-12-19 00:04:43,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:43,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507323966] [2023-12-19 00:04:43,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:43,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 00:04:43,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:43,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507323966] [2023-12-19 00:04:43,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507323966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:43,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:43,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 00:04:43,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453185139] [2023-12-19 00:04:43,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:43,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 00:04:43,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:43,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 00:04:43,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-19 00:04:43,278 INFO L87 Difference]: Start difference. First operand 5881 states and 8741 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:43,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:43,446 INFO L93 Difference]: Finished difference Result 10379 states and 15242 transitions. [2023-12-19 00:04:43,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 00:04:43,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-19 00:04:43,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:43,459 INFO L225 Difference]: With dead ends: 10379 [2023-12-19 00:04:43,459 INFO L226 Difference]: Without dead ends: 9169 [2023-12-19 00:04:43,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-19 00:04:43,464 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 4639 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4639 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:43,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4639 Valid, 3339 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:43,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9169 states. [2023-12-19 00:04:43,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9169 to 7089. [2023-12-19 00:04:43,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7089 states, 7087 states have (on average 1.4760829688161423) internal successors, (10461), 7088 states have internal predecessors, (10461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:43,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 10461 transitions. [2023-12-19 00:04:43,609 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 10461 transitions. Word has length 61 [2023-12-19 00:04:43,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:43,609 INFO L495 AbstractCegarLoop]: Abstraction has 7089 states and 10461 transitions. [2023-12-19 00:04:43,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:43,610 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 10461 transitions. [2023-12-19 00:04:43,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 00:04:43,614 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:43,614 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:43,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 00:04:43,614 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:43,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:43,614 INFO L85 PathProgramCache]: Analyzing trace with hash -263811695, now seen corresponding path program 1 times [2023-12-19 00:04:43,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:43,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521506740] [2023-12-19 00:04:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:43,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:43,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:43,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521506740] [2023-12-19 00:04:43,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521506740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:43,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:43,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:04:43,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748988704] [2023-12-19 00:04:43,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:43,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:04:43,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:43,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:04:43,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:04:43,669 INFO L87 Difference]: Start difference. First operand 7089 states and 10461 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:43,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:43,771 INFO L93 Difference]: Finished difference Result 13397 states and 19455 transitions. [2023-12-19 00:04:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:04:43,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-19 00:04:43,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:43,782 INFO L225 Difference]: With dead ends: 13397 [2023-12-19 00:04:43,782 INFO L226 Difference]: Without dead ends: 7091 [2023-12-19 00:04:43,788 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 [2023-12-19 00:04:43,788 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 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 [2023-12-19 00:04:43,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:43,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7091 states. [2023-12-19 00:04:43,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7091 to 7089. [2023-12-19 00:04:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7089 states, 7087 states have (on average 1.4585861436432905) internal successors, (10337), 7088 states have internal predecessors, (10337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:43,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7089 states to 7089 states and 10337 transitions. [2023-12-19 00:04:43,921 INFO L78 Accepts]: Start accepts. Automaton has 7089 states and 10337 transitions. Word has length 62 [2023-12-19 00:04:43,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:43,921 INFO L495 AbstractCegarLoop]: Abstraction has 7089 states and 10337 transitions. [2023-12-19 00:04:43,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:43,922 INFO L276 IsEmpty]: Start isEmpty. Operand 7089 states and 10337 transitions. [2023-12-19 00:04:43,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-19 00:04:43,922 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:43,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:43,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 00:04:43,923 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:43,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:43,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1794718171, now seen corresponding path program 1 times [2023-12-19 00:04:43,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:43,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396613116] [2023-12-19 00:04:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:43,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:43,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:43,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396613116] [2023-12-19 00:04:43,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396613116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:43,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:43,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:04:43,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324775955] [2023-12-19 00:04:43,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:43,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:04:43,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:43,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:04:43,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:04:43,959 INFO L87 Difference]: Start difference. First operand 7089 states and 10337 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:46,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:46,818 INFO L93 Difference]: Finished difference Result 8593 states and 13210 transitions. [2023-12-19 00:04:46,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:04:46,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-12-19 00:04:46,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:46,846 INFO L225 Difference]: With dead ends: 8593 [2023-12-19 00:04:46,846 INFO L226 Difference]: Without dead ends: 7840 [2023-12-19 00:04:46,859 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 [2023-12-19 00:04:46,860 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 822 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:46,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 555 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 00:04:46,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7840 states. [2023-12-19 00:04:46,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7840 to 7840. [2023-12-19 00:04:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7840 states, 7838 states have (on average 1.443735646848686) internal successors, (11316), 7839 states have internal predecessors, (11316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7840 states to 7840 states and 11316 transitions. [2023-12-19 00:04:46,997 INFO L78 Accepts]: Start accepts. Automaton has 7840 states and 11316 transitions. Word has length 62 [2023-12-19 00:04:46,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:46,997 INFO L495 AbstractCegarLoop]: Abstraction has 7840 states and 11316 transitions. [2023-12-19 00:04:46,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:46,997 INFO L276 IsEmpty]: Start isEmpty. Operand 7840 states and 11316 transitions. [2023-12-19 00:04:46,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-19 00:04:46,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:46,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:46,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 00:04:46,999 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:46,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:47,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1786499741, now seen corresponding path program 1 times [2023-12-19 00:04:47,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:47,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744741336] [2023-12-19 00:04:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:47,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:47,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:47,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744741336] [2023-12-19 00:04:47,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744741336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:47,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:47,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:04:47,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75203819] [2023-12-19 00:04:47,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:47,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:04:47,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:47,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:04:47,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:04:47,081 INFO L87 Difference]: Start difference. First operand 7840 states and 11316 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:47,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:47,143 INFO L93 Difference]: Finished difference Result 10236 states and 14723 transitions. [2023-12-19 00:04:47,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:04:47,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-19 00:04:47,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:47,149 INFO L225 Difference]: With dead ends: 10236 [2023-12-19 00:04:47,149 INFO L226 Difference]: Without dead ends: 3930 [2023-12-19 00:04:47,153 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 [2023-12-19 00:04:47,154 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 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 [2023-12-19 00:04:47,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:47,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2023-12-19 00:04:47,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3923. [2023-12-19 00:04:47,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3921 states have (on average 1.479979597041571) internal successors, (5803), 3922 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:47,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 5803 transitions. [2023-12-19 00:04:47,209 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 5803 transitions. Word has length 63 [2023-12-19 00:04:47,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:47,209 INFO L495 AbstractCegarLoop]: Abstraction has 3923 states and 5803 transitions. [2023-12-19 00:04:47,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:47,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 5803 transitions. [2023-12-19 00:04:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-19 00:04:47,210 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:47,210 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:47,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 00:04:47,210 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:47,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:47,211 INFO L85 PathProgramCache]: Analyzing trace with hash 884488671, now seen corresponding path program 1 times [2023-12-19 00:04:47,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:47,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866612029] [2023-12-19 00:04:47,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:47,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:47,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:47,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866612029] [2023-12-19 00:04:47,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866612029] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:47,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:47,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:04:47,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347270564] [2023-12-19 00:04:47,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:47,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:04:47,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:47,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:04:47,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:04:47,265 INFO L87 Difference]: Start difference. First operand 3923 states and 5803 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:47,302 INFO L93 Difference]: Finished difference Result 5115 states and 7477 transitions. [2023-12-19 00:04:47,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:04:47,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-19 00:04:47,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:47,306 INFO L225 Difference]: With dead ends: 5115 [2023-12-19 00:04:47,306 INFO L226 Difference]: Without dead ends: 2737 [2023-12-19 00:04:47,308 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 [2023-12-19 00:04:47,309 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 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 [2023-12-19 00:04:47,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2023-12-19 00:04:47,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2735. [2023-12-19 00:04:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2735 states, 2733 states have (on average 1.5034760336626418) internal successors, (4109), 2734 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 4109 transitions. [2023-12-19 00:04:47,348 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 4109 transitions. Word has length 64 [2023-12-19 00:04:47,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:47,348 INFO L495 AbstractCegarLoop]: Abstraction has 2735 states and 4109 transitions. [2023-12-19 00:04:47,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 4109 transitions. [2023-12-19 00:04:47,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-19 00:04:47,349 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:47,349 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:47,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 00:04:47,349 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:47,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:47,349 INFO L85 PathProgramCache]: Analyzing trace with hash 841150381, now seen corresponding path program 1 times [2023-12-19 00:04:47,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:47,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308559785] [2023-12-19 00:04:47,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:47,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:47,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:47,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308559785] [2023-12-19 00:04:47,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308559785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:04:47,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:04:47,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:04:47,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589116560] [2023-12-19 00:04:47,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:04:47,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:04:47,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:04:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:04:47,398 INFO L87 Difference]: Start difference. First operand 2735 states and 4109 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:47,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:47,427 INFO L93 Difference]: Finished difference Result 3333 states and 4936 transitions. [2023-12-19 00:04:47,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:04:47,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-19 00:04:47,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:47,431 INFO L225 Difference]: With dead ends: 3333 [2023-12-19 00:04:47,431 INFO L226 Difference]: Without dead ends: 2143 [2023-12-19 00:04:47,432 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 [2023-12-19 00:04:47,432 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 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 [2023-12-19 00:04:47,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:04:47,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2023-12-19 00:04:47,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2141. [2023-12-19 00:04:47,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2141 states, 2139 states have (on average 1.5301542776998598) internal successors, (3273), 2140 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:47,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3273 transitions. [2023-12-19 00:04:47,490 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3273 transitions. Word has length 66 [2023-12-19 00:04:47,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:47,490 INFO L495 AbstractCegarLoop]: Abstraction has 2141 states and 3273 transitions. [2023-12-19 00:04:47,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:47,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3273 transitions. [2023-12-19 00:04:47,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-19 00:04:47,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:47,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:47,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 00:04:47,491 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:47,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:47,492 INFO L85 PathProgramCache]: Analyzing trace with hash -136343813, now seen corresponding path program 1 times [2023-12-19 00:04:47,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:47,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714914360] [2023-12-19 00:04:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:47,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:48,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:48,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714914360] [2023-12-19 00:04:48,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714914360] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:04:48,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116020676] [2023-12-19 00:04:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:48,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:04:48,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:04:48,456 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) [2023-12-19 00:04:48,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 00:04:48,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:48,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 00:04:48,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:04:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:04:48,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:04:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:04:48,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116020676] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:04:48,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:04:48,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-19 00:04:48,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652147229] [2023-12-19 00:04:48,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:04:48,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 00:04:48,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 00:04:48,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 00:04:48,826 INFO L87 Difference]: Start difference. First operand 2141 states and 3273 transitions. Second operand has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:50,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:50,819 INFO L93 Difference]: Finished difference Result 6296 states and 8766 transitions. [2023-12-19 00:04:50,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-19 00:04:50,819 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 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 68 [2023-12-19 00:04:50,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:50,827 INFO L225 Difference]: With dead ends: 6296 [2023-12-19 00:04:50,827 INFO L226 Difference]: Without dead ends: 5700 [2023-12-19 00:04:50,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 00:04:50,830 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 11439 mSDsluCounter, 6263 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11439 SdHoareTripleChecker+Valid, 7765 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:50,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11439 Valid, 7765 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 00:04:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2023-12-19 00:04:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5372. [2023-12-19 00:04:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 5370 states have (on average 1.3782122905027934) internal successors, (7401), 5371 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 7401 transitions. [2023-12-19 00:04:50,963 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 7401 transitions. Word has length 68 [2023-12-19 00:04:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:50,963 INFO L495 AbstractCegarLoop]: Abstraction has 5372 states and 7401 transitions. [2023-12-19 00:04:50,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.555555555555555) internal successors, (190), 18 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:50,963 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 7401 transitions. [2023-12-19 00:04:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-19 00:04:50,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:50,964 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:50,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 00:04:51,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:04:51,168 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:51,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:51,169 INFO L85 PathProgramCache]: Analyzing trace with hash -600280717, now seen corresponding path program 1 times [2023-12-19 00:04:51,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:51,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494596748] [2023-12-19 00:04:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:51,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:53,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:53,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494596748] [2023-12-19 00:04:53,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494596748] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:04:53,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901965513] [2023-12-19 00:04:53,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:53,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:04:53,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:04:53,093 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) [2023-12-19 00:04:53,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 00:04:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:53,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 00:04:53,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:04:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:53,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:04:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:54,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901965513] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:04:54,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:04:54,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-19 00:04:54,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443366854] [2023-12-19 00:04:54,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:04:54,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-19 00:04:54,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:54,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-19 00:04:54,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-12-19 00:04:54,224 INFO L87 Difference]: Start difference. First operand 5372 states and 7401 transitions. Second operand has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:56,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:04:56,023 INFO L93 Difference]: Finished difference Result 21318 states and 27963 transitions. [2023-12-19 00:04:56,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 00:04:56,024 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 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 69 [2023-12-19 00:04:56,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:04:56,048 INFO L225 Difference]: With dead ends: 21318 [2023-12-19 00:04:56,048 INFO L226 Difference]: Without dead ends: 17962 [2023-12-19 00:04:56,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=596, Invalid=2710, Unknown=0, NotChecked=0, Total=3306 [2023-12-19 00:04:56,057 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 18924 mSDsluCounter, 6584 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18924 SdHoareTripleChecker+Valid, 8078 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:04:56,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18924 Valid, 8078 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:04:56,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17962 states. [2023-12-19 00:04:56,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17962 to 16590. [2023-12-19 00:04:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16590 states, 16588 states have (on average 1.3147455992283579) internal successors, (21809), 16589 states have internal predecessors, (21809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16590 states to 16590 states and 21809 transitions. [2023-12-19 00:04:56,528 INFO L78 Accepts]: Start accepts. Automaton has 16590 states and 21809 transitions. Word has length 69 [2023-12-19 00:04:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:04:56,528 INFO L495 AbstractCegarLoop]: Abstraction has 16590 states and 21809 transitions. [2023-12-19 00:04:56,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 27 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:04:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 16590 states and 21809 transitions. [2023-12-19 00:04:56,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-19 00:04:56,529 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:04:56,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:04:56,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-19 00:04:56,738 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,SelfDestructingSolverStorable20 [2023-12-19 00:04:56,739 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:04:56,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:04:56,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1351926847, now seen corresponding path program 1 times [2023-12-19 00:04:56,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:04:56,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706004308] [2023-12-19 00:04:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:56,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:04:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:57,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:04:57,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706004308] [2023-12-19 00:04:57,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706004308] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:04:57,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061923892] [2023-12-19 00:04:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:04:57,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:04:57,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:04:57,026 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) [2023-12-19 00:04:57,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 00:04:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:04:57,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:04:57,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:04:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:57,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:04:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:04:58,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061923892] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:04:58,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:04:58,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-19 00:04:58,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718549043] [2023-12-19 00:04:58,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:04:58,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 00:04:58,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:04:58,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 00:04:58,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-12-19 00:04:58,195 INFO L87 Difference]: Start difference. First operand 16590 states and 21809 transitions. Second operand has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:00,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:00,670 INFO L93 Difference]: Finished difference Result 55463 states and 71292 transitions. [2023-12-19 00:05:00,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-19 00:05:00,670 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 states have internal predecessors, (191), 0 states have call successors, (0), 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 69 [2023-12-19 00:05:00,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:00,713 INFO L225 Difference]: With dead ends: 55463 [2023-12-19 00:05:00,714 INFO L226 Difference]: Without dead ends: 41536 [2023-12-19 00:05:00,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=796, Invalid=3236, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 00:05:00,734 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 18389 mSDsluCounter, 7938 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18389 SdHoareTripleChecker+Valid, 9436 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:05:00,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18389 Valid, 9436 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 00:05:00,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41536 states. [2023-12-19 00:05:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41536 to 22116. [2023-12-19 00:05:01,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22116 states, 22114 states have (on average 1.2798679569503482) internal successors, (28303), 22115 states have internal predecessors, (28303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:01,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22116 states to 22116 states and 28303 transitions. [2023-12-19 00:05:01,501 INFO L78 Accepts]: Start accepts. Automaton has 22116 states and 28303 transitions. Word has length 69 [2023-12-19 00:05:01,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:01,503 INFO L495 AbstractCegarLoop]: Abstraction has 22116 states and 28303 transitions. [2023-12-19 00:05:01,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.161290322580645) internal successors, (191), 31 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:01,503 INFO L276 IsEmpty]: Start isEmpty. Operand 22116 states and 28303 transitions. [2023-12-19 00:05:01,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-19 00:05:01,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:01,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:05:01,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-19 00:05:01,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:05:01,709 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:01,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:01,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1034756201, now seen corresponding path program 1 times [2023-12-19 00:05:01,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:01,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080350899] [2023-12-19 00:05:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:01,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:01,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:01,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080350899] [2023-12-19 00:05:01,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080350899] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:05:01,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732929796] [2023-12-19 00:05:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:01,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:05:01,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:05:01,909 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) [2023-12-19 00:05:01,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 00:05:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:01,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-19 00:05:01,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:05:02,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:02,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:05:02,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:02,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732929796] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:05:02,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:05:02,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-12-19 00:05:02,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793859109] [2023-12-19 00:05:02,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:05:02,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-19 00:05:02,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:02,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-19 00:05:02,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-12-19 00:05:02,654 INFO L87 Difference]: Start difference. First operand 22116 states and 28303 transitions. Second operand has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 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) [2023-12-19 00:05:03,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:05:03,561 INFO L93 Difference]: Finished difference Result 42393 states and 53852 transitions. [2023-12-19 00:05:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-19 00:05:03,562 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 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 70 [2023-12-19 00:05:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:05:03,586 INFO L225 Difference]: With dead ends: 42393 [2023-12-19 00:05:03,586 INFO L226 Difference]: Without dead ends: 23878 [2023-12-19 00:05:03,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 00:05:03,605 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 10494 mSDsluCounter, 4722 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10494 SdHoareTripleChecker+Valid, 6234 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 00:05:03,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10494 Valid, 6234 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 00:05:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23878 states. [2023-12-19 00:05:04,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23878 to 22440. [2023-12-19 00:05:04,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22440 states, 22438 states have (on average 1.2679828861752385) internal successors, (28451), 22439 states have internal predecessors, (28451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:05:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22440 states to 22440 states and 28451 transitions. [2023-12-19 00:05:04,336 INFO L78 Accepts]: Start accepts. Automaton has 22440 states and 28451 transitions. Word has length 70 [2023-12-19 00:05:04,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:05:04,336 INFO L495 AbstractCegarLoop]: Abstraction has 22440 states and 28451 transitions. [2023-12-19 00:05:04,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.608695652173913) internal successors, (152), 22 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) [2023-12-19 00:05:04,337 INFO L276 IsEmpty]: Start isEmpty. Operand 22440 states and 28451 transitions. [2023-12-19 00:05:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-19 00:05:04,339 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:05:04,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:05:04,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 00:05:04,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:05:04,545 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:05:04,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:05:04,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1418177617, now seen corresponding path program 1 times [2023-12-19 00:05:04,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:05:04,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073936172] [2023-12-19 00:05:04,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:04,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:05:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:06,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:05:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073936172] [2023-12-19 00:05:06,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073936172] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:05:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584005233] [2023-12-19 00:05:06,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:05:06,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:05:06,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:05:06,233 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) [2023-12-19 00:05:06,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 00:05:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:05:06,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-19 00:05:06,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:05:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:09,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:05:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:05:11,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584005233] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:05:11,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:05:11,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 19] total 61 [2023-12-19 00:05:11,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006965197] [2023-12-19 00:05:11,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:05:11,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-19 00:05:11,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:05:11,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-19 00:05:11,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=3355, Unknown=0, NotChecked=0, Total=3660 [2023-12-19 00:05:11,535 INFO L87 Difference]: Start difference. First operand 22440 states and 28451 transitions. Second operand has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:02,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:07:02,032 INFO L93 Difference]: Finished difference Result 79430 states and 98269 transitions. [2023-12-19 00:07:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 427 states. [2023-12-19 00:07:02,032 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-19 00:07:02,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:07:02,103 INFO L225 Difference]: With dead ends: 79430 [2023-12-19 00:07:02,103 INFO L226 Difference]: Without dead ends: 68003 [2023-12-19 00:07:02,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 484 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105628 ImplicationChecksByTransitivity, 103.4s TimeCoverageRelationStatistics Valid=32146, Invalid=203564, Unknown=0, NotChecked=0, Total=235710 [2023-12-19 00:07:02,129 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 29099 mSDsluCounter, 34293 mSDsCounter, 0 mSdLazyCounter, 7138 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29099 SdHoareTripleChecker+Valid, 35903 SdHoareTripleChecker+Invalid, 7374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 7138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-12-19 00:07:02,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29099 Valid, 35903 Invalid, 7374 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [236 Valid, 7138 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-12-19 00:07:02,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68003 states. [2023-12-19 00:07:03,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68003 to 38499. [2023-12-19 00:07:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38499 states, 38497 states have (on average 1.2526430630958256) internal successors, (48223), 38498 states have internal predecessors, (48223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38499 states to 38499 states and 48223 transitions. [2023-12-19 00:07:03,978 INFO L78 Accepts]: Start accepts. Automaton has 38499 states and 48223 transitions. Word has length 71 [2023-12-19 00:07:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:07:03,978 INFO L495 AbstractCegarLoop]: Abstraction has 38499 states and 48223 transitions. [2023-12-19 00:07:03,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.262295081967213) internal successors, (199), 61 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:03,979 INFO L276 IsEmpty]: Start isEmpty. Operand 38499 states and 48223 transitions. [2023-12-19 00:07:03,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-19 00:07:03,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:07:03,980 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:07:03,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-19 00:07:04,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-19 00:07:04,184 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:07:04,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:07:04,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1344690513, now seen corresponding path program 1 times [2023-12-19 00:07:04,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:07:04,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071649432] [2023-12-19 00:07:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:04,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:07:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:05,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:07:05,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071649432] [2023-12-19 00:07:05,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071649432] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:07:05,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157068799] [2023-12-19 00:07:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:05,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:07:05,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:07:05,482 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:07:05,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 00:07:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:05,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-19 00:07:05,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:07:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:06,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:07:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:07,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157068799] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:07:07,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:07:07,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 16] total 53 [2023-12-19 00:07:07,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662783861] [2023-12-19 00:07:07,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:07:07,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-19 00:07:07,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:07:07,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-19 00:07:07,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2553, Unknown=0, NotChecked=0, Total=2756 [2023-12-19 00:07:07,470 INFO L87 Difference]: Start difference. First operand 38499 states and 48223 transitions. Second operand has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:07:26,096 INFO L93 Difference]: Finished difference Result 88449 states and 110383 transitions. [2023-12-19 00:07:26,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-12-19 00:07:26,096 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-19 00:07:26,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:07:26,172 INFO L225 Difference]: With dead ends: 88449 [2023-12-19 00:07:26,172 INFO L226 Difference]: Without dead ends: 69601 [2023-12-19 00:07:26,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11056 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=7356, Invalid=28176, Unknown=0, NotChecked=0, Total=35532 [2023-12-19 00:07:26,185 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 31602 mSDsluCounter, 30104 mSDsCounter, 0 mSdLazyCounter, 3664 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31602 SdHoareTripleChecker+Valid, 31673 SdHoareTripleChecker+Invalid, 3828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-19 00:07:26,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31602 Valid, 31673 Invalid, 3828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [164 Valid, 3664 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-19 00:07:26,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69601 states. [2023-12-19 00:07:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69601 to 32995. [2023-12-19 00:07:27,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32995 states, 32993 states have (on average 1.254660079410784) internal successors, (41395), 32994 states have internal predecessors, (41395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:28,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32995 states to 32995 states and 41395 transitions. [2023-12-19 00:07:28,038 INFO L78 Accepts]: Start accepts. Automaton has 32995 states and 41395 transitions. Word has length 71 [2023-12-19 00:07:28,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:07:28,039 INFO L495 AbstractCegarLoop]: Abstraction has 32995 states and 41395 transitions. [2023-12-19 00:07:28,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.5849056603773586) internal successors, (190), 53 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:28,039 INFO L276 IsEmpty]: Start isEmpty. Operand 32995 states and 41395 transitions. [2023-12-19 00:07:28,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:07:28,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:07:28,042 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:07:28,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 00:07:28,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:07:28,247 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:07:28,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:07:28,247 INFO L85 PathProgramCache]: Analyzing trace with hash 84087227, now seen corresponding path program 1 times [2023-12-19 00:07:28,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:07:28,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914941534] [2023-12-19 00:07:28,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:28,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:07:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:28,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:07:28,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914941534] [2023-12-19 00:07:28,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914941534] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:07:28,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470203039] [2023-12-19 00:07:28,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:28,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:07:28,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:07:28,584 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:07:28,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 00:07:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:28,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 00:07:28,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:07:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:29,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:07:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:31,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470203039] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:07:31,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:07:31,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 16] total 41 [2023-12-19 00:07:31,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93690715] [2023-12-19 00:07:31,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:07:31,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-19 00:07:31,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:07:31,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-19 00:07:31,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1423, Unknown=0, NotChecked=0, Total=1640 [2023-12-19 00:07:31,937 INFO L87 Difference]: Start difference. First operand 32995 states and 41395 transitions. Second operand has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:37,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:07:37,833 INFO L93 Difference]: Finished difference Result 44731 states and 55716 transitions. [2023-12-19 00:07:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-19 00:07:37,834 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-19 00:07:37,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:07:37,931 INFO L225 Difference]: With dead ends: 44731 [2023-12-19 00:07:37,931 INFO L226 Difference]: Without dead ends: 30698 [2023-12-19 00:07:37,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2102, Invalid=6828, Unknown=0, NotChecked=0, Total=8930 [2023-12-19 00:07:37,956 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 22132 mSDsluCounter, 16607 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22132 SdHoareTripleChecker+Valid, 18116 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:07:37,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22132 Valid, 18116 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 00:07:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30698 states. [2023-12-19 00:07:39,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30698 to 27534. [2023-12-19 00:07:39,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27534 states, 27532 states have (on average 1.255811419439198) internal successors, (34575), 27533 states have internal predecessors, (34575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27534 states to 27534 states and 34575 transitions. [2023-12-19 00:07:39,433 INFO L78 Accepts]: Start accepts. Automaton has 27534 states and 34575 transitions. Word has length 73 [2023-12-19 00:07:39,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:07:39,434 INFO L495 AbstractCegarLoop]: Abstraction has 27534 states and 34575 transitions. [2023-12-19 00:07:39,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 41 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 27534 states and 34575 transitions. [2023-12-19 00:07:39,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-19 00:07:39,437 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:07:39,437 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:07:39,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 00:07:39,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:07:39,642 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:07:39,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:07:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash -371225047, now seen corresponding path program 1 times [2023-12-19 00:07:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:07:39,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892618090] [2023-12-19 00:07:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:39,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:07:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:40,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:07:40,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892618090] [2023-12-19 00:07:40,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892618090] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:07:40,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732240365] [2023-12-19 00:07:40,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:40,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:07:40,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:07:40,066 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:07:40,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 00:07:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:40,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 00:07:40,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:07:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:40,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:07:42,373 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:42,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732240365] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:07:42,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:07:42,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2023-12-19 00:07:42,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10848651] [2023-12-19 00:07:42,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:07:42,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-19 00:07:42,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:07:42,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-19 00:07:42,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2023-12-19 00:07:42,376 INFO L87 Difference]: Start difference. First operand 27534 states and 34575 transitions. Second operand has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:50,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:07:50,687 INFO L93 Difference]: Finished difference Result 64842 states and 80305 transitions. [2023-12-19 00:07:50,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-19 00:07:50,688 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 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 114 [2023-12-19 00:07:50,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:07:50,735 INFO L225 Difference]: With dead ends: 64842 [2023-12-19 00:07:50,735 INFO L226 Difference]: Without dead ends: 46820 [2023-12-19 00:07:50,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5331 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2807, Invalid=15825, Unknown=0, NotChecked=0, Total=18632 [2023-12-19 00:07:50,750 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 15885 mSDsluCounter, 23169 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15885 SdHoareTripleChecker+Valid, 24692 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:07:50,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15885 Valid, 24692 Invalid, 2120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-19 00:07:50,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46820 states. [2023-12-19 00:07:52,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46820 to 33705. [2023-12-19 00:07:52,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33705 states, 33703 states have (on average 1.2349939174554194) internal successors, (41623), 33704 states have internal predecessors, (41623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33705 states to 33705 states and 41623 transitions. [2023-12-19 00:07:52,925 INFO L78 Accepts]: Start accepts. Automaton has 33705 states and 41623 transitions. Word has length 114 [2023-12-19 00:07:52,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:07:52,926 INFO L495 AbstractCegarLoop]: Abstraction has 33705 states and 41623 transitions. [2023-12-19 00:07:52,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.515151515151516) internal successors, (314), 33 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:07:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 33705 states and 41623 transitions. [2023-12-19 00:07:52,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 00:07:52,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:07:52,930 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:07:52,950 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 00:07:53,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 00:07:53,134 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:07:53,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:07:53,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1587052505, now seen corresponding path program 1 times [2023-12-19 00:07:53,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:07:53,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62890616] [2023-12-19 00:07:53,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:53,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:07:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 41 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:54,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:07:54,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62890616] [2023-12-19 00:07:54,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62890616] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:07:54,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985695001] [2023-12-19 00:07:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:07:54,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:07:54,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:07:54,039 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:07:54,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 00:07:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:07:54,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:07:54,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:07:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 47 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:54,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:07:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 41 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:07:56,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985695001] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:07:56,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:07:56,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2023-12-19 00:07:56,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809756951] [2023-12-19 00:07:56,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:07:56,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:07:56,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:07:56,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:07:56,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:07:56,198 INFO L87 Difference]: Start difference. First operand 33705 states and 41623 transitions. Second operand has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:00,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:08:00,201 INFO L93 Difference]: Finished difference Result 59146 states and 72578 transitions. [2023-12-19 00:08:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-19 00:08:00,202 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 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 115 [2023-12-19 00:08:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:08:00,241 INFO L225 Difference]: With dead ends: 59146 [2023-12-19 00:08:00,241 INFO L226 Difference]: Without dead ends: 40606 [2023-12-19 00:08:00,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=859, Invalid=3047, Unknown=0, NotChecked=0, Total=3906 [2023-12-19 00:08:00,249 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 18239 mSDsluCounter, 15222 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18239 SdHoareTripleChecker+Valid, 16737 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:08:00,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18239 Valid, 16737 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 00:08:00,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40606 states. [2023-12-19 00:08:02,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40606 to 33705. [2023-12-19 00:08:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33705 states, 33703 states have (on average 1.2265376969409252) internal successors, (41338), 33704 states have internal predecessors, (41338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33705 states to 33705 states and 41338 transitions. [2023-12-19 00:08:02,542 INFO L78 Accepts]: Start accepts. Automaton has 33705 states and 41338 transitions. Word has length 115 [2023-12-19 00:08:02,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:08:02,542 INFO L495 AbstractCegarLoop]: Abstraction has 33705 states and 41338 transitions. [2023-12-19 00:08:02,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 31 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:02,542 INFO L276 IsEmpty]: Start isEmpty. Operand 33705 states and 41338 transitions. [2023-12-19 00:08:02,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-12-19 00:08:02,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:08:02,563 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:08:02,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 00:08:02,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 00:08:02,772 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:08:02,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:08:02,772 INFO L85 PathProgramCache]: Analyzing trace with hash -180146983, now seen corresponding path program 1 times [2023-12-19 00:08:02,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:08:02,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647284835] [2023-12-19 00:08:02,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:02,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:08:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:03,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:08:03,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647284835] [2023-12-19 00:08:03,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647284835] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:08:03,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38281458] [2023-12-19 00:08:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:03,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:08:03,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:08:03,280 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:08:03,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 00:08:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:03,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:08:03,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:08:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:04,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:08:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:05,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38281458] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:08:05,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:08:05,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-12-19 00:08:05,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965312259] [2023-12-19 00:08:05,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:08:05,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-19 00:08:05,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:08:05,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-19 00:08:05,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2023-12-19 00:08:05,625 INFO L87 Difference]: Start difference. First operand 33705 states and 41338 transitions. Second operand has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:08,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:08:08,286 INFO L93 Difference]: Finished difference Result 52982 states and 64981 transitions. [2023-12-19 00:08:08,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 00:08:08,286 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 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 115 [2023-12-19 00:08:08,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:08:08,321 INFO L225 Difference]: With dead ends: 52982 [2023-12-19 00:08:08,321 INFO L226 Difference]: Without dead ends: 38136 [2023-12-19 00:08:08,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=394, Invalid=1328, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 00:08:08,327 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 15046 mSDsluCounter, 10655 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15046 SdHoareTripleChecker+Valid, 12170 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-19 00:08:08,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15046 Valid, 12170 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-19 00:08:08,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38136 states. [2023-12-19 00:08:10,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38136 to 33705. [2023-12-19 00:08:10,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33705 states, 33703 states have (on average 1.2190606177491619) internal successors, (41086), 33704 states have internal predecessors, (41086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33705 states to 33705 states and 41086 transitions. [2023-12-19 00:08:10,526 INFO L78 Accepts]: Start accepts. Automaton has 33705 states and 41086 transitions. Word has length 115 [2023-12-19 00:08:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:08:10,526 INFO L495 AbstractCegarLoop]: Abstraction has 33705 states and 41086 transitions. [2023-12-19 00:08:10,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.384615384615385) internal successors, (244), 25 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:10,527 INFO L276 IsEmpty]: Start isEmpty. Operand 33705 states and 41086 transitions. [2023-12-19 00:08:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 00:08:10,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:08:10,545 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:08:10,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-19 00:08:10,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-19 00:08:10,750 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:08:10,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:08:10,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2091291649, now seen corresponding path program 1 times [2023-12-19 00:08:10,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:08:10,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555409974] [2023-12-19 00:08:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:10,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:08:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:12,044 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:12,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:08:12,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555409974] [2023-12-19 00:08:12,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555409974] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:08:12,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377241620] [2023-12-19 00:08:12,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:12,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:08:12,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:08:12,045 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:08:12,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 00:08:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:12,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-19 00:08:12,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:08:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:13,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:08:16,064 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:16,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377241620] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:08:16,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:08:16,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 57 [2023-12-19 00:08:16,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630693038] [2023-12-19 00:08:16,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:08:16,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-19 00:08:16,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:08:16,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-19 00:08:16,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2927, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 00:08:16,066 INFO L87 Difference]: Start difference. First operand 33705 states and 41086 transitions. Second operand has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:53,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:08:53,938 INFO L93 Difference]: Finished difference Result 74623 states and 90005 transitions. [2023-12-19 00:08:53,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2023-12-19 00:08:53,939 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 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 116 [2023-12-19 00:08:53,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:08:54,003 INFO L225 Difference]: With dead ends: 74623 [2023-12-19 00:08:54,003 INFO L226 Difference]: Without dead ends: 66955 [2023-12-19 00:08:54,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23428 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=8348, Invalid=59512, Unknown=0, NotChecked=0, Total=67860 [2023-12-19 00:08:54,014 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 23224 mSDsluCounter, 34678 mSDsCounter, 0 mSdLazyCounter, 4908 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23224 SdHoareTripleChecker+Valid, 36321 SdHoareTripleChecker+Invalid, 5289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 4908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:08:54,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23224 Valid, 36321 Invalid, 5289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [381 Valid, 4908 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-19 00:08:54,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66955 states. [2023-12-19 00:08:57,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66955 to 39172. [2023-12-19 00:08:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39172 states, 39170 states have (on average 1.2128669900434006) internal successors, (47508), 39171 states have internal predecessors, (47508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:57,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39172 states to 39172 states and 47508 transitions. [2023-12-19 00:08:57,176 INFO L78 Accepts]: Start accepts. Automaton has 39172 states and 47508 transitions. Word has length 116 [2023-12-19 00:08:57,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:08:57,176 INFO L495 AbstractCegarLoop]: Abstraction has 39172 states and 47508 transitions. [2023-12-19 00:08:57,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.491228070175438) internal successors, (313), 57 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:08:57,176 INFO L276 IsEmpty]: Start isEmpty. Operand 39172 states and 47508 transitions. [2023-12-19 00:08:57,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 00:08:57,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:08:57,179 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:08:57,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 00:08:57,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:08:57,383 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:08:57,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:08:57,383 INFO L85 PathProgramCache]: Analyzing trace with hash 349447389, now seen corresponding path program 1 times [2023-12-19 00:08:57,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:08:57,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180789525] [2023-12-19 00:08:57,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:57,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:08:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:08:58,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:08:58,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180789525] [2023-12-19 00:08:58,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180789525] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:08:58,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089620762] [2023-12-19 00:08:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:08:58,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:08:58,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:08:58,556 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:08:58,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 00:08:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:08:58,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-19 00:08:58,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:09:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:00,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:09:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 39 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:09:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089620762] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:09:03,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:09:03,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 21] total 62 [2023-12-19 00:09:03,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324409361] [2023-12-19 00:09:03,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:09:03,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-19 00:09:03,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:09:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-19 00:09:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3412, Unknown=0, NotChecked=0, Total=3782 [2023-12-19 00:09:03,751 INFO L87 Difference]: Start difference. First operand 39172 states and 47508 transitions. Second operand has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:10:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:10:05,979 INFO L93 Difference]: Finished difference Result 93806 states and 111953 transitions. [2023-12-19 00:10:05,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 446 states. [2023-12-19 00:10:05,980 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 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 116 [2023-12-19 00:10:05,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:10:06,063 INFO L225 Difference]: With dead ends: 93806 [2023-12-19 00:10:06,063 INFO L226 Difference]: Without dead ends: 83097 [2023-12-19 00:10:06,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101927 ImplicationChecksByTransitivity, 50.1s TimeCoverageRelationStatistics Valid=23255, Invalid=232275, Unknown=0, NotChecked=0, Total=255530 [2023-12-19 00:10:06,081 INFO L413 NwaCegarLoop]: 1741 mSDtfsCounter, 28409 mSDsluCounter, 44703 mSDsCounter, 0 mSdLazyCounter, 11035 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28409 SdHoareTripleChecker+Valid, 46444 SdHoareTripleChecker+Invalid, 11320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 11035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:10:06,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28409 Valid, 46444 Invalid, 11320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [285 Valid, 11035 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2023-12-19 00:10:06,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83097 states. [2023-12-19 00:10:10,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83097 to 42501. [2023-12-19 00:10:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42501 states, 42499 states have (on average 1.2102873008776678) internal successors, (51436), 42500 states have internal predecessors, (51436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:10:10,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42501 states to 42501 states and 51436 transitions. [2023-12-19 00:10:10,103 INFO L78 Accepts]: Start accepts. Automaton has 42501 states and 51436 transitions. Word has length 116 [2023-12-19 00:10:10,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:10:10,104 INFO L495 AbstractCegarLoop]: Abstraction has 42501 states and 51436 transitions. [2023-12-19 00:10:10,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.080645161290323) internal successors, (315), 62 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:10:10,104 INFO L276 IsEmpty]: Start isEmpty. Operand 42501 states and 51436 transitions. [2023-12-19 00:10:10,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 00:10:10,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:10:10,106 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:10:10,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 00:10:10,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:10:10,311 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:10:10,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:10:10,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1659761441, now seen corresponding path program 1 times [2023-12-19 00:10:10,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:10:10,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798202244] [2023-12-19 00:10:10,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:10:10,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:10:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:10:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-19 00:10:10,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:10:10,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798202244] [2023-12-19 00:10:10,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798202244] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:10:10,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661033828] [2023-12-19 00:10:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:10:10,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:10:10,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:10:10,929 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:10:10,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-19 00:10:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:10:11,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:10:11,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:10:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:10:11,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:10:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:10:12,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661033828] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:10:12,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:10:12,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 37 [2023-12-19 00:10:12,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250567078] [2023-12-19 00:10:12,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:10:12,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-19 00:10:12,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:10:12,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-19 00:10:12,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2023-12-19 00:10:12,965 INFO L87 Difference]: Start difference. First operand 42501 states and 51436 transitions. Second operand has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:10:20,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:10:20,957 INFO L93 Difference]: Finished difference Result 77358 states and 93397 transitions. [2023-12-19 00:10:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-19 00:10:20,957 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 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 116 [2023-12-19 00:10:20,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:10:20,999 INFO L225 Difference]: With dead ends: 77358 [2023-12-19 00:10:21,000 INFO L226 Difference]: Without dead ends: 48818 [2023-12-19 00:10:21,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2316 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1819, Invalid=6371, Unknown=0, NotChecked=0, Total=8190 [2023-12-19 00:10:21,012 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 11341 mSDsluCounter, 20555 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11341 SdHoareTripleChecker+Valid, 22091 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:10:21,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11341 Valid, 22091 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-19 00:10:21,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48818 states. [2023-12-19 00:10:24,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48818 to 42369. [2023-12-19 00:10:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42369 states, 42367 states have (on average 1.209785918285458) internal successors, (51255), 42368 states have internal predecessors, (51255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:10:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42369 states to 42369 states and 51255 transitions. [2023-12-19 00:10:25,028 INFO L78 Accepts]: Start accepts. Automaton has 42369 states and 51255 transitions. Word has length 116 [2023-12-19 00:10:25,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:10:25,029 INFO L495 AbstractCegarLoop]: Abstraction has 42369 states and 51255 transitions. [2023-12-19 00:10:25,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.297297297297296) internal successors, (307), 37 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:10:25,029 INFO L276 IsEmpty]: Start isEmpty. Operand 42369 states and 51255 transitions. [2023-12-19 00:10:25,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-12-19 00:10:25,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:10:25,038 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:10:25,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-19 00:10:25,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-19 00:10:25,243 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:10:25,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:10:25,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1305055869, now seen corresponding path program 1 times [2023-12-19 00:10:25,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:10:25,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713189343] [2023-12-19 00:10:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:10:25,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:10:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:10:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:10:26,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:10:26,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713189343] [2023-12-19 00:10:26,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713189343] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:10:26,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053208693] [2023-12-19 00:10:26,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:10:26,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:10:26,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:10:26,305 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:10:26,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-19 00:10:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:10:26,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-19 00:10:26,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:10:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:10:27,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:10:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 13 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:10:30,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053208693] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:10:30,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:10:30,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17, 18] total 57 [2023-12-19 00:10:30,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49126622] [2023-12-19 00:10:30,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:10:30,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-19 00:10:30,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:10:30,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-19 00:10:30,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2952, Unknown=0, NotChecked=0, Total=3192 [2023-12-19 00:10:30,398 INFO L87 Difference]: Start difference. First operand 42369 states and 51255 transitions. Second operand has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:11:12,639 INFO L93 Difference]: Finished difference Result 111846 states and 133756 transitions. [2023-12-19 00:11:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-19 00:11:12,640 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 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 116 [2023-12-19 00:11:12,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:11:12,732 INFO L225 Difference]: With dead ends: 111846 [2023-12-19 00:11:12,733 INFO L226 Difference]: Without dead ends: 86312 [2023-12-19 00:11:12,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20770 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=8850, Invalid=52406, Unknown=0, NotChecked=0, Total=61256 [2023-12-19 00:11:12,750 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 27605 mSDsluCounter, 36454 mSDsCounter, 0 mSdLazyCounter, 5547 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27605 SdHoareTripleChecker+Valid, 38102 SdHoareTripleChecker+Invalid, 5835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 5547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:11:12,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27605 Valid, 38102 Invalid, 5835 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [288 Valid, 5547 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 00:11:12,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86312 states. [2023-12-19 00:11:18,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86312 to 47753. [2023-12-19 00:11:18,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47753 states, 47751 states have (on average 1.2071160813386108) internal successors, (57641), 47752 states have internal predecessors, (57641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:18,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47753 states to 47753 states and 57641 transitions. [2023-12-19 00:11:18,232 INFO L78 Accepts]: Start accepts. Automaton has 47753 states and 57641 transitions. Word has length 116 [2023-12-19 00:11:18,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:11:18,232 INFO L495 AbstractCegarLoop]: Abstraction has 47753 states and 57641 transitions. [2023-12-19 00:11:18,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.894736842105263) internal successors, (336), 57 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:11:18,232 INFO L276 IsEmpty]: Start isEmpty. Operand 47753 states and 57641 transitions. [2023-12-19 00:11:18,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 00:11:18,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:11:18,235 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:11:18,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-19 00:11:18,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:11:18,439 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:11:18,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:11:18,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1516639257, now seen corresponding path program 1 times [2023-12-19 00:11:18,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:11:18,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972638815] [2023-12-19 00:11:18,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:18,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:11:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:20,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:11:20,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972638815] [2023-12-19 00:11:20,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972638815] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:11:20,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728069507] [2023-12-19 00:11:20,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:11:20,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:11:20,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:11:20,378 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:11:20,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-19 00:11:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:11:20,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-19 00:11:20,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:11:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:27,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:11:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:11:34,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728069507] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:11:34,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:11:34,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 35, 33] total 96 [2023-12-19 00:11:34,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512794668] [2023-12-19 00:11:34,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:11:34,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-19 00:11:34,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:11:34,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-19 00:11:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=8317, Unknown=0, NotChecked=0, Total=9120 [2023-12-19 00:11:34,646 INFO L87 Difference]: Start difference. First operand 47753 states and 57641 transitions. Second operand has 96 states, 96 states have (on average 3.375) internal successors, (324), 96 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:16,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:16:16,825 INFO L93 Difference]: Finished difference Result 80875 states and 96537 transitions. [2023-12-19 00:16:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 522 states. [2023-12-19 00:16:16,826 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.375) internal successors, (324), 96 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-12-19 00:16:16,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:16:16,893 INFO L225 Difference]: With dead ends: 80875 [2023-12-19 00:16:16,893 INFO L226 Difference]: Without dead ends: 70565 [2023-12-19 00:16:16,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 605 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150726 ImplicationChecksByTransitivity, 265.0s TimeCoverageRelationStatistics Valid=27450, Invalid=340392, Unknown=0, NotChecked=0, Total=367842 [2023-12-19 00:16:16,915 INFO L413 NwaCegarLoop]: 1716 mSDtfsCounter, 36136 mSDsluCounter, 54152 mSDsCounter, 0 mSdLazyCounter, 13452 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36136 SdHoareTripleChecker+Valid, 55868 SdHoareTripleChecker+Invalid, 13835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 13452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:16:16,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36136 Valid, 55868 Invalid, 13835 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [383 Valid, 13452 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2023-12-19 00:16:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70565 states. [2023-12-19 00:16:23,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70565 to 50874. [2023-12-19 00:16:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50874 states, 50872 states have (on average 1.2050636892593174) internal successors, (61304), 50873 states have internal predecessors, (61304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:23,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50874 states to 50874 states and 61304 transitions. [2023-12-19 00:16:23,487 INFO L78 Accepts]: Start accepts. Automaton has 50874 states and 61304 transitions. Word has length 117 [2023-12-19 00:16:23,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:16:23,487 INFO L495 AbstractCegarLoop]: Abstraction has 50874 states and 61304 transitions. [2023-12-19 00:16:23,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.375) internal successors, (324), 96 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:16:23,488 INFO L276 IsEmpty]: Start isEmpty. Operand 50874 states and 61304 transitions. [2023-12-19 00:16:23,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-12-19 00:16:23,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:16:23,491 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:16:23,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-19 00:16:23,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:23,696 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:16:23,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:16:23,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1240937763, now seen corresponding path program 1 times [2023-12-19 00:16:23,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:16:23,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758257761] [2023-12-19 00:16:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:23,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:16:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 19 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:24,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:16:24,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758257761] [2023-12-19 00:16:24,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758257761] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:16:24,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109962424] [2023-12-19 00:16:24,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:16:24,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:16:24,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:16:24,790 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:16:24,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-19 00:16:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:16:24,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-19 00:16:24,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:16:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 19 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:29,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:16:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 19 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:16:34,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109962424] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:16:34,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:16:34,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 30, 30] total 81 [2023-12-19 00:16:34,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632508155] [2023-12-19 00:16:34,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:16:34,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-19 00:16:34,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:16:34,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-19 00:16:34,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=5880, Unknown=0, NotChecked=0, Total=6480 [2023-12-19 00:16:34,527 INFO L87 Difference]: Start difference. First operand 50874 states and 61304 transitions. Second operand has 81 states, 81 states have (on average 4.111111111111111) internal successors, (333), 81 states have internal predecessors, (333), 0 states have call successors, (0), 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... [2023-12-19 00:18:29,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2023-12-19 00:18:29,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44507 ImplicationChecksByTransitivity, 110.4s TimeCoverageRelationStatistics Valid=12573, Invalid=109577, Unknown=0, NotChecked=0, Total=122150 [2023-12-19 00:18:29,804 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 5871 mSDsluCounter, 6411 mSDsCounter, 0 mSdLazyCounter, 7271 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5871 SdHoareTripleChecker+Valid, 6630 SdHoareTripleChecker+Invalid, 7569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 7271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:18:29,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5871 Valid, 6630 Invalid, 7569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 7271 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-19 00:18:29,805 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 00:18:29,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-19 00:18:29,811 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 [2023-12-19 00:18:29,811 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:18:30,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-19 00:18:30,010 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (50874states) and FLOYD_HOARE automaton (currently 282 states, 81 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 350 known predicates. [2023-12-19 00:18:30,011 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 00:18:30,014 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:18:30,015 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 00:18:30,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:18:30 BoogieIcfgContainer [2023-12-19 00:18:30,016 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 00:18:30,017 INFO L158 Benchmark]: Toolchain (without parser) took 835053.51ms. Allocated memory was 293.6MB in the beginning and 3.0GB in the end (delta: 2.7GB). Free memory was 228.2MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-19 00:18:30,017 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 183.5MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 00:18:30,017 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1301.39ms. Allocated memory is still 293.6MB. Free memory was 228.2MB in the beginning and 154.5MB in the end (delta: 73.8MB). Peak memory consumption was 92.1MB. Max. memory is 8.0GB. [2023-12-19 00:18:30,017 INFO L158 Benchmark]: Boogie Procedure Inliner took 353.16ms. Allocated memory was 293.6MB in the beginning and 410.0MB in the end (delta: 116.4MB). Free memory was 154.5MB in the beginning and 320.1MB in the end (delta: -165.7MB). Peak memory consumption was 88.6MB. Max. memory is 8.0GB. [2023-12-19 00:18:30,017 INFO L158 Benchmark]: Boogie Preprocessor took 410.77ms. Allocated memory is still 410.0MB. Free memory was 320.1MB in the beginning and 276.1MB in the end (delta: 44.0MB). Peak memory consumption was 81.3MB. Max. memory is 8.0GB. [2023-12-19 00:18:30,017 INFO L158 Benchmark]: RCFGBuilder took 3060.92ms. Allocated memory was 410.0MB in the beginning and 800.1MB in the end (delta: 390.1MB). Free memory was 276.1MB in the beginning and 611.1MB in the end (delta: -335.0MB). Peak memory consumption was 256.9MB. Max. memory is 8.0GB. [2023-12-19 00:18:30,017 INFO L158 Benchmark]: TraceAbstraction took 829921.45ms. Allocated memory was 800.1MB in the beginning and 3.0GB in the end (delta: 2.2GB). Free memory was 610.6MB in the beginning and 1.7GB in the end (delta: -1.1GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-12-19 00:18:30,018 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 183.5MB. Free memory is still 131.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1301.39ms. Allocated memory is still 293.6MB. Free memory was 228.2MB in the beginning and 154.5MB in the end (delta: 73.8MB). Peak memory consumption was 92.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 353.16ms. Allocated memory was 293.6MB in the beginning and 410.0MB in the end (delta: 116.4MB). Free memory was 154.5MB in the beginning and 320.1MB in the end (delta: -165.7MB). Peak memory consumption was 88.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 410.77ms. Allocated memory is still 410.0MB. Free memory was 320.1MB in the beginning and 276.1MB in the end (delta: 44.0MB). Peak memory consumption was 81.3MB. Max. memory is 8.0GB. * RCFGBuilder took 3060.92ms. Allocated memory was 410.0MB in the beginning and 800.1MB in the end (delta: 390.1MB). Free memory was 276.1MB in the beginning and 611.1MB in the end (delta: -335.0MB). Peak memory consumption was 256.9MB. Max. memory is 8.0GB. * TraceAbstraction took 829921.45ms. Allocated memory was 800.1MB in the beginning and 3.0GB in the end (delta: 2.2GB). Free memory was 610.6MB in the beginning and 1.7GB in the end (delta: -1.1GB). Peak memory consumption was 1.1GB. 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: 363]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 363). Cancelled while NwaCegarLoop was constructing difference of abstraction (50874states) and FLOYD_HOARE automaton (currently 282 states, 81 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 350 known predicates. - TimeoutResultAtElement [Line: 567]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 567). Cancelled while NwaCegarLoop was constructing difference of abstraction (50874states) and FLOYD_HOARE automaton (currently 282 states, 81 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 350 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 820 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 829.9s, OverallIterations: 35, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 710.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 358534 SdHoareTripleChecker+Valid, 52.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 358534 mSDsluCounter, 424804 SdHoareTripleChecker+Invalid, 47.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 372719 mSDsCounter, 3154 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65079 IncrementalHoareTripleChecker+Invalid, 68233 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3154 mSolverCounterUnsat, 52085 mSDtfsCounter, 65079 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5993 GetRequests, 2674 SyntacticMatches, 2 SemanticMatches, 3316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471863 ImplicationChecksByTransitivity, 625.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50874occurred in iteration=34, InterpolantAutomatonStates: 2410, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 38.4s AutomataMinimizationTime, 34 MinimizatonAttempts, 258692 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 74.5s InterpolantComputationTime, 4016 NumberOfCodeBlocks, 4016 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 5482 ConstructedInterpolants, 0 QuantifiedInterpolants, 127856 SizeOfPredicates, 147 NumberOfNonLiveVariables, 7061 ConjunctsInSsa, 448 ConjunctsInUnsatCore, 67 InterpolantComputations, 19 PerfectInterpolantSequences, 1023/3014 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