/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/loops/vogal-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:58:56,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:58:57,050 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:58:57,053 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:58:57,054 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:58:57,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:58:57,076 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:58:57,076 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:58:57,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:58:57,080 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:58:57,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:58:57,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:58:57,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:58:57,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:58:57,082 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:58:57,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:58:57,082 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:58:57,083 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:58:57,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:58:57,084 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:58:57,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:58:57,084 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:58:57,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:58:57,085 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:58:57,085 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:58:57,085 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:58:57,085 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:58:57,085 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:58:57,086 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:58:57,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:58:57,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:58:57,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:58:57,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:58:57,087 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:58:57,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:58:57,087 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:58:57,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:58:57,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:58:57,087 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:58:57,088 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:58:57,088 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:58:57,088 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:58:57,088 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:58:57,088 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:58:57,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:58:57,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:58:57,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:58:57,291 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:58:57,292 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:58:57,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/vogal-2.i [2023-12-15 21:58:58,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:58:58,516 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:58:58,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal-2.i [2023-12-15 21:58:58,523 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf06e621/0f598ef7718d41ec82c9bf91e6a5a400/FLAG4af6bd520 [2023-12-15 21:58:58,535 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf06e621/0f598ef7718d41ec82c9bf91e6a5a400 [2023-12-15 21:58:58,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:58:58,538 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:58:58,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:58:58,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:58:58,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:58:58,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@237b9320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58, skipping insertion in model container [2023-12-15 21:58:58,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,562 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:58:58,673 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal-2.i[808,821] [2023-12-15 21:58:58,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:58:58,704 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:58:58,715 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal-2.i[808,821] [2023-12-15 21:58:58,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:58:58,738 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:58:58,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58 WrapperNode [2023-12-15 21:58:58,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:58:58,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:58:58,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:58:58,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:58:58,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,768 INFO L138 Inliner]: procedures = 16, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 120 [2023-12-15 21:58:58,768 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:58:58,769 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:58:58,769 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:58:58,769 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:58:58,776 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,778 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,787 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 6, 13]. 62 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 11]. The 2 writes are split as follows [0, 2, 0]. [2023-12-15 21:58:58,787 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:58:58,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:58:58,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:58:58,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:58:58,810 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58" (1/1) ... [2023-12-15 21:58:58,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:58:58,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:58:58,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:58:58,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:58:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:58:58,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:58:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 21:58:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-15 21:58:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-15 21:58:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 21:58:58,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 21:58:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-15 21:58:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:58:58,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:58:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 21:58:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 21:58:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-15 21:58:58,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 21:58:58,961 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:58:58,962 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:58:59,099 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:58:59,121 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:58:59,121 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-12-15 21:58:59,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:58:59 BoogieIcfgContainer [2023-12-15 21:58:59,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:58:59,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:58:59,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:58:59,125 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:58:59,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:58:58" (1/3) ... [2023-12-15 21:58:59,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744721c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:58:59, skipping insertion in model container [2023-12-15 21:58:59,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:58" (2/3) ... [2023-12-15 21:58:59,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744721c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:58:59, skipping insertion in model container [2023-12-15 21:58:59,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:58:59" (3/3) ... [2023-12-15 21:58:59,127 INFO L112 eAbstractionObserver]: Analyzing ICFG vogal-2.i [2023-12-15 21:58:59,139 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:58:59,139 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:58:59,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:58:59,179 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b58419, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:58:59,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:58:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:59,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-15 21:58:59,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:59,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:58:59,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:58:59,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:58:59,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1189472620, now seen corresponding path program 1 times [2023-12-15 21:58:59,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:58:59,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156134870] [2023-12-15 21:58:59,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:59,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:58:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:59,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:58:59,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156134870] [2023-12-15 21:58:59,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156134870] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:58:59,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:58:59,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:58:59,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709274098] [2023-12-15 21:58:59,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:58:59,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 21:58:59,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:58:59,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 21:58:59,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:58:59,362 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:58:59,395 INFO L93 Difference]: Finished difference Result 46 states and 72 transitions. [2023-12-15 21:58:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 21:58:59,397 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2023-12-15 21:58:59,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:58:59,402 INFO L225 Difference]: With dead ends: 46 [2023-12-15 21:58:59,402 INFO L226 Difference]: Without dead ends: 22 [2023-12-15 21:58:59,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 21:58:59,409 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:59,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:58:59,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-15 21:58:59,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-15 21:58:59,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2023-12-15 21:58:59,439 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 11 [2023-12-15 21:58:59,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:58:59,439 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-12-15 21:58:59,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:59,440 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2023-12-15 21:58:59,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-15 21:58:59,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:59,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:58:59,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 21:58:59,441 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:58:59,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:58:59,442 INFO L85 PathProgramCache]: Analyzing trace with hash -485381442, now seen corresponding path program 1 times [2023-12-15 21:58:59,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:58:59,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740640620] [2023-12-15 21:58:59,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:59,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:58:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:59,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:58:59,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740640620] [2023-12-15 21:58:59,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740640620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:58:59,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:58:59,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 21:58:59,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408206539] [2023-12-15 21:58:59,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:58:59,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 21:58:59,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:58:59,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 21:58:59,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:58:59,607 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:59,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:58:59,653 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2023-12-15 21:58:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 21:58:59,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2023-12-15 21:58:59,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:58:59,655 INFO L225 Difference]: With dead ends: 59 [2023-12-15 21:58:59,655 INFO L226 Difference]: Without dead ends: 39 [2023-12-15 21:58:59,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 21:58:59,667 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:59,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 37 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:58:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-15 21:58:59,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 23. [2023-12-15 21:58:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2023-12-15 21:58:59,671 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 13 [2023-12-15 21:58:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:58:59,671 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2023-12-15 21:58:59,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:59,671 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2023-12-15 21:58:59,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-15 21:58:59,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:59,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:58:59,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 21:58:59,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:58:59,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:58:59,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1164049076, now seen corresponding path program 1 times [2023-12-15 21:58:59,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:58:59,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368599725] [2023-12-15 21:58:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:59,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:58:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:59,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:58:59,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368599725] [2023-12-15 21:58:59,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368599725] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:58:59,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317768778] [2023-12-15 21:58:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:59,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:58:59,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:58:59,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:58:59,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:58:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:59,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 21:58:59,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:58:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 21:58:59,877 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:58:59,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317768778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:58:59,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:58:59,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-12-15 21:58:59,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504466688] [2023-12-15 21:58:59,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:58:59,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:58:59,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:58:59,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:58:59,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:58:59,878 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:58:59,922 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-12-15 21:58:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:58:59,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-12-15 21:58:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:58:59,924 INFO L225 Difference]: With dead ends: 49 [2023-12-15 21:58:59,924 INFO L226 Difference]: Without dead ends: 45 [2023-12-15 21:58:59,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:58:59,927 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 32 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:59,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 95 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:58:59,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-15 21:58:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2023-12-15 21:58:59,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:59,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2023-12-15 21:58:59,938 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 14 [2023-12-15 21:58:59,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:58:59,938 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2023-12-15 21:58:59,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:59,939 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2023-12-15 21:58:59,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-15 21:58:59,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:59,940 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] [2023-12-15 21:58:59,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:59:00,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:00,145 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:59:00,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:59:00,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2027667739, now seen corresponding path program 1 times [2023-12-15 21:59:00,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:59:00,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678962894] [2023-12-15 21:59:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:00,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:59:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 21:59:00,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:59:00,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678962894] [2023-12-15 21:59:00,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678962894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:59:00,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307017011] [2023-12-15 21:59:00,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:00,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:00,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:59:00,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:59:00,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:59:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:00,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-15 21:59:00,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:59:00,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 21:59:00,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 21:59:00,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307017011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:59:00,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 21:59:00,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2023-12-15 21:59:00,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688759538] [2023-12-15 21:59:00,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:59:00,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:59:00,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:59:00,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:59:00,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:59:00,296 INFO L87 Difference]: Start difference. First operand 35 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:59:00,328 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2023-12-15 21:59:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 21:59:00,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-12-15 21:59:00,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:59:00,329 INFO L225 Difference]: With dead ends: 94 [2023-12-15 21:59:00,329 INFO L226 Difference]: Without dead ends: 66 [2023-12-15 21:59:00,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 21:59:00,330 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:59:00,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 62 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:59:00,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-15 21:59:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 39. [2023-12-15 21:59:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.368421052631579) internal successors, (52), 38 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 52 transitions. [2023-12-15 21:59:00,334 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 52 transitions. Word has length 20 [2023-12-15 21:59:00,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:59:00,334 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 52 transitions. [2023-12-15 21:59:00,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 52 transitions. [2023-12-15 21:59:00,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 21:59:00,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:59:00,335 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:59:00,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:59:00,539 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,SelfDestructingSolverStorable3 [2023-12-15 21:59:00,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:59:00,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:59:00,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1967465323, now seen corresponding path program 1 times [2023-12-15 21:59:00,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:59:00,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982927135] [2023-12-15 21:59:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:00,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:59:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 21:59:00,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:59:00,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982927135] [2023-12-15 21:59:00,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982927135] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:59:00,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584718751] [2023-12-15 21:59:00,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:00,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:00,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:59:00,626 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:59:00,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:59:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:00,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-15 21:59:00,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:59:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 21:59:00,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:59:00,851 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-12-15 21:59:00,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2023-12-15 21:59:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 21:59:00,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584718751] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:59:00,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:59:00,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 8] total 15 [2023-12-15 21:59:00,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742364744] [2023-12-15 21:59:00,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:59:00,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:59:00,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:59:00,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:59:00,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:59:00,866 INFO L87 Difference]: Start difference. First operand 39 states and 52 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:00,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:59:00,982 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2023-12-15 21:59:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 21:59:00,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-15 21:59:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:59:00,987 INFO L225 Difference]: With dead ends: 58 [2023-12-15 21:59:00,987 INFO L226 Difference]: Without dead ends: 37 [2023-12-15 21:59:00,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-12-15 21:59:00,991 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:59:00,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 97 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:59:00,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-15 21:59:00,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-12-15 21:59:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 36 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:00,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2023-12-15 21:59:01,000 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 21 [2023-12-15 21:59:01,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:59:01,000 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2023-12-15 21:59:01,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:01,001 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2023-12-15 21:59:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 21:59:01,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:59:01,002 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:59:01,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 21:59:01,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:01,207 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:59:01,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:59:01,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1098837248, now seen corresponding path program 1 times [2023-12-15 21:59:01,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:59:01,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446316865] [2023-12-15 21:59:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:01,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:59:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 21:59:01,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:59:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446316865] [2023-12-15 21:59:01,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446316865] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:59:01,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440191008] [2023-12-15 21:59:01,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:01,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:01,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:59:01,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:59:01,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 21:59:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:01,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 21:59:01,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:59:01,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-12-15 21:59:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 21:59:01,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:59:01,615 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-12-15 21:59:01,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2023-12-15 21:59:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 21:59:01,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440191008] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:59:01,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:59:01,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 8, 7] total 15 [2023-12-15 21:59:01,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849669311] [2023-12-15 21:59:01,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:59:01,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-15 21:59:01,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:59:01,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-15 21:59:01,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-12-15 21:59:01,633 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 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) [2023-12-15 21:59:01,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:59:01,819 INFO L93 Difference]: Finished difference Result 164 states and 220 transitions. [2023-12-15 21:59:01,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-15 21:59:01,819 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 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 22 [2023-12-15 21:59:01,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:59:01,820 INFO L225 Difference]: With dead ends: 164 [2023-12-15 21:59:01,820 INFO L226 Difference]: Without dead ends: 130 [2023-12-15 21:59:01,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2023-12-15 21:59:01,821 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 155 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 21:59:01,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 150 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 21:59:01,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-15 21:59:01,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 40. [2023-12-15 21:59:01,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:01,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2023-12-15 21:59:01,827 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 22 [2023-12-15 21:59:01,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:59:01,827 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2023-12-15 21:59:01,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 15 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) [2023-12-15 21:59:01,827 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2023-12-15 21:59:01,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-15 21:59:01,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:59:01,828 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:59:01,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 21:59:02,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:02,034 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:59:02,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:59:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1233609372, now seen corresponding path program 1 times [2023-12-15 21:59:02,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:59:02,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754026200] [2023-12-15 21:59:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:02,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:59:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:02,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 21:59:02,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:59:02,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754026200] [2023-12-15 21:59:02,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754026200] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:59:02,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384546565] [2023-12-15 21:59:02,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:02,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:02,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:59:02,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:59:02,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 21:59:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:02,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 21:59:02,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:59:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 21:59:02,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:59:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 21:59:02,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384546565] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:59:02,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:59:02,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2023-12-15 21:59:02,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715455500] [2023-12-15 21:59:02,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:59:02,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-15 21:59:02,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:59:02,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-15 21:59:02,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-15 21:59:02,215 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:02,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:59:02,612 INFO L93 Difference]: Finished difference Result 329 states and 468 transitions. [2023-12-15 21:59:02,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-15 21:59:02,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 24 [2023-12-15 21:59:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:59:02,613 INFO L225 Difference]: With dead ends: 329 [2023-12-15 21:59:02,613 INFO L226 Difference]: Without dead ends: 293 [2023-12-15 21:59:02,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2023-12-15 21:59:02,614 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 310 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:59:02,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 184 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 21:59:02,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-12-15 21:59:02,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 63. [2023-12-15 21:59:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3225806451612903) internal successors, (82), 62 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2023-12-15 21:59:02,625 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 24 [2023-12-15 21:59:02,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:59:02,625 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2023-12-15 21:59:02,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2023-12-15 21:59:02,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 21:59:02,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:59:02,626 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:59:02,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 21:59:02,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:02,831 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:59:02,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:59:02,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1400965100, now seen corresponding path program 2 times [2023-12-15 21:59:02,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:59:02,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821001698] [2023-12-15 21:59:02,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:02,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:59:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-15 21:59:02,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:59:02,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821001698] [2023-12-15 21:59:02,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821001698] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:59:02,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575753254] [2023-12-15 21:59:02,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 21:59:02,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:02,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:59:02,919 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) [2023-12-15 21:59:02,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 21:59:03,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 21:59:03,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:59:03,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-15 21:59:03,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:59:03,040 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 21:59:03,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:59:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-15 21:59:03,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575753254] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:59:03,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:59:03,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2023-12-15 21:59:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546183628] [2023-12-15 21:59:03,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:59:03,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-15 21:59:03,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:59:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-15 21:59:03,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-12-15 21:59:03,072 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:59:03,756 INFO L93 Difference]: Finished difference Result 496 states and 741 transitions. [2023-12-15 21:59:03,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-15 21:59:03,757 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-15 21:59:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:59:03,759 INFO L225 Difference]: With dead ends: 496 [2023-12-15 21:59:03,759 INFO L226 Difference]: Without dead ends: 438 [2023-12-15 21:59:03,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=349, Invalid=1057, Unknown=0, NotChecked=0, Total=1406 [2023-12-15 21:59:03,771 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 519 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:59:03,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 344 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:59:03,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2023-12-15 21:59:03,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 126. [2023-12-15 21:59:03,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.312) internal successors, (164), 125 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 164 transitions. [2023-12-15 21:59:03,826 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 164 transitions. Word has length 30 [2023-12-15 21:59:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:59:03,826 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 164 transitions. [2023-12-15 21:59:03,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 164 transitions. [2023-12-15 21:59:03,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-15 21:59:03,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:59:03,831 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:59:03,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-15 21:59:04,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:04,035 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:59:04,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:59:04,036 INFO L85 PathProgramCache]: Analyzing trace with hash -842501258, now seen corresponding path program 3 times [2023-12-15 21:59:04,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:59:04,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457682871] [2023-12-15 21:59:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:04,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:59:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-15 21:59:04,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:59:04,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457682871] [2023-12-15 21:59:04,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457682871] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:59:04,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029110956] [2023-12-15 21:59:04,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 21:59:04,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:04,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:59:04,296 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) [2023-12-15 21:59:04,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 21:59:04,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-15 21:59:04,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:59:04,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-15 21:59:04,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:59:04,529 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-15 21:59:04,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:59:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-15 21:59:04,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029110956] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 21:59:04,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 21:59:04,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 9] total 20 [2023-12-15 21:59:04,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098958990] [2023-12-15 21:59:04,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:59:04,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 21:59:04,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:59:04,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 21:59:04,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:59:04,631 INFO L87 Difference]: Start difference. First operand 126 states and 164 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:59:04,724 INFO L93 Difference]: Finished difference Result 220 states and 287 transitions. [2023-12-15 21:59:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 21:59:04,724 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 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 [2023-12-15 21:59:04,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:59:04,725 INFO L225 Difference]: With dead ends: 220 [2023-12-15 21:59:04,725 INFO L226 Difference]: Without dead ends: 169 [2023-12-15 21:59:04,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-12-15 21:59:04,729 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 46 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:59:04,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 74 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:59:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-12-15 21:59:04,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 127. [2023-12-15 21:59:04,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.3095238095238095) internal successors, (165), 126 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 165 transitions. [2023-12-15 21:59:04,751 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 165 transitions. Word has length 43 [2023-12-15 21:59:04,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:59:04,764 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 165 transitions. [2023-12-15 21:59:04,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:04,764 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 165 transitions. [2023-12-15 21:59:04,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-15 21:59:04,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:59:04,765 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:59:04,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 21:59:04,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:04,966 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:59:04,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:59:04,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1327650016, now seen corresponding path program 1 times [2023-12-15 21:59:04,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:59:04,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472768182] [2023-12-15 21:59:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:04,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:59:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-15 21:59:05,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:59:05,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472768182] [2023-12-15 21:59:05,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472768182] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:59:05,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138928806] [2023-12-15 21:59:05,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:05,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:05,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:59:05,184 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) [2023-12-15 21:59:05,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 21:59:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:05,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 21:59:05,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:59:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-15 21:59:05,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:59:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-15 21:59:05,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138928806] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:59:05,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:59:05,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 11] total 17 [2023-12-15 21:59:05,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857926708] [2023-12-15 21:59:05,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:59:05,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 21:59:05,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:59:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 21:59:05,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-12-15 21:59:05,463 INFO L87 Difference]: Start difference. First operand 127 states and 165 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:06,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:59:06,410 INFO L93 Difference]: Finished difference Result 1042 states and 1380 transitions. [2023-12-15 21:59:06,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 21:59:06,410 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-15 21:59:06,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:59:06,413 INFO L225 Difference]: With dead ends: 1042 [2023-12-15 21:59:06,413 INFO L226 Difference]: Without dead ends: 921 [2023-12-15 21:59:06,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=265, Invalid=727, Unknown=0, NotChecked=0, Total=992 [2023-12-15 21:59:06,414 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 568 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:59:06,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 627 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:59:06,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2023-12-15 21:59:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 133. [2023-12-15 21:59:06,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.2954545454545454) internal successors, (171), 132 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:06,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 171 transitions. [2023-12-15 21:59:06,439 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 171 transitions. Word has length 56 [2023-12-15 21:59:06,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:59:06,439 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 171 transitions. [2023-12-15 21:59:06,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:06,440 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 171 transitions. [2023-12-15 21:59:06,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-15 21:59:06,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:59:06,440 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:59:06,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 21:59:06,645 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,SelfDestructingSolverStorable9 [2023-12-15 21:59:06,645 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:59:06,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:59:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash -784296224, now seen corresponding path program 2 times [2023-12-15 21:59:06,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:59:06,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545920672] [2023-12-15 21:59:06,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:06,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:59:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-12-15 21:59:06,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:59:06,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545920672] [2023-12-15 21:59:06,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545920672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:59:06,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703009049] [2023-12-15 21:59:06,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 21:59:06,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:06,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:59:06,842 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) [2023-12-15 21:59:06,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 21:59:06,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 21:59:06,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:59:06,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-15 21:59:06,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:59:07,054 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 2 proven. 100 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-15 21:59:07,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:59:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-12-15 21:59:07,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703009049] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:59:07,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:59:07,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 9] total 24 [2023-12-15 21:59:07,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615795538] [2023-12-15 21:59:07,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:59:07,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-15 21:59:07,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:59:07,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-15 21:59:07,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2023-12-15 21:59:07,191 INFO L87 Difference]: Start difference. First operand 133 states and 171 transitions. Second operand has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:09,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:59:09,821 INFO L93 Difference]: Finished difference Result 1175 states and 1690 transitions. [2023-12-15 21:59:09,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-15 21:59:09,821 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2023-12-15 21:59:09,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:59:09,829 INFO L225 Difference]: With dead ends: 1175 [2023-12-15 21:59:09,829 INFO L226 Difference]: Without dead ends: 1089 [2023-12-15 21:59:09,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2738 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1049, Invalid=8071, Unknown=0, NotChecked=0, Total=9120 [2023-12-15 21:59:09,833 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 1165 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 3677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:59:09,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 3256 Invalid, 3677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 21:59:09,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2023-12-15 21:59:09,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 205. [2023-12-15 21:59:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.3088235294117647) internal successors, (267), 204 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:09,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 267 transitions. [2023-12-15 21:59:09,869 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 267 transitions. Word has length 62 [2023-12-15 21:59:09,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:59:09,870 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 267 transitions. [2023-12-15 21:59:09,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 267 transitions. [2023-12-15 21:59:09,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 21:59:09,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:59:09,870 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 8, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:59:09,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-15 21:59:10,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:10,076 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:59:10,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:59:10,076 INFO L85 PathProgramCache]: Analyzing trace with hash 889268896, now seen corresponding path program 3 times [2023-12-15 21:59:10,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:59:10,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614363152] [2023-12-15 21:59:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:10,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:59:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-12-15 21:59:11,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:59:11,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614363152] [2023-12-15 21:59:11,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614363152] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:59:11,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964643544] [2023-12-15 21:59:11,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 21:59:11,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:11,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:59:11,355 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) [2023-12-15 21:59:11,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 21:59:11,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-15 21:59:11,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:59:11,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-15 21:59:11,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:59:12,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:59:12,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2023-12-15 21:59:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 2 proven. 74 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-12-15 21:59:12,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:59:14,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:59:14,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 174 [2023-12-15 21:59:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 35 proven. 39 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-12-15 21:59:41,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964643544] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:59:41,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:59:41,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 36 [2023-12-15 21:59:41,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237513674] [2023-12-15 21:59:41,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:59:41,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-15 21:59:41,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:59:41,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-15 21:59:41,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1155, Unknown=2, NotChecked=0, Total=1332 [2023-12-15 21:59:41,635 INFO L87 Difference]: Start difference. First operand 205 states and 267 transitions. Second operand has 37 states, 37 states have (on average 3.027027027027027) internal successors, (112), 36 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:49,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:59:49,770 INFO L93 Difference]: Finished difference Result 678 states and 894 transitions. [2023-12-15 21:59:49,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2023-12-15 21:59:49,771 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.027027027027027) internal successors, (112), 36 states have internal predecessors, (112), 0 states have call successors, (0), 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 86 [2023-12-15 21:59:49,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:59:49,773 INFO L225 Difference]: With dead ends: 678 [2023-12-15 21:59:49,773 INFO L226 Difference]: Without dead ends: 570 [2023-12-15 21:59:49,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 106 SyntacticMatches, 43 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6999 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=2630, Invalid=17674, Unknown=2, NotChecked=0, Total=20306 [2023-12-15 21:59:49,777 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 1496 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 21:59:49,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1226 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 21:59:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-12-15 21:59:49,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 240. [2023-12-15 21:59:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.3054393305439331) internal successors, (312), 239 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 312 transitions. [2023-12-15 21:59:49,824 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 312 transitions. Word has length 86 [2023-12-15 21:59:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:59:49,825 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 312 transitions. [2023-12-15 21:59:49,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.027027027027027) internal successors, (112), 36 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:59:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 312 transitions. [2023-12-15 21:59:49,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 21:59:49,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:59:49,825 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 8, 8, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:59:49,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-15 21:59:50,026 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,SelfDestructingSolverStorable11 [2023-12-15 21:59:50,027 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:59:50,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:59:50,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1832153692, now seen corresponding path program 1 times [2023-12-15 21:59:50,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:59:50,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740882987] [2023-12-15 21:59:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:50,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:59:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 34 proven. 57 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-12-15 21:59:51,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:59:51,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740882987] [2023-12-15 21:59:51,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740882987] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:59:51,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170711350] [2023-12-15 21:59:51,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:59:51,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:59:51,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:59:51,180 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) [2023-12-15 21:59:51,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 21:59:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:59:51,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 81 conjunts are in the unsatisfiable core [2023-12-15 21:59:51,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:59:53,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:59:53,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 146 [2023-12-15 21:59:53,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-15 21:59:53,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 52 [2023-12-15 21:59:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 64 proven. 218 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-15 21:59:53,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:59:56,928 INFO L349 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2023-12-15 21:59:56,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 188 treesize of output 1 [2023-12-15 21:59:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 88 proven. 145 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-15 21:59:56,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170711350] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:59:56,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:59:56,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 32, 25] total 66 [2023-12-15 21:59:56,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135354434] [2023-12-15 21:59:56,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:59:56,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-15 21:59:56,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:59:56,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-15 21:59:56,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=3777, Unknown=0, NotChecked=0, Total=4290 [2023-12-15 21:59:56,932 INFO L87 Difference]: Start difference. First operand 240 states and 312 transitions. Second operand has 66 states, 66 states have (on average 2.696969696969697) internal successors, (178), 66 states have internal predecessors, (178), 0 states have call successors, (0), 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... [2023-12-15 22:00:06,433 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 22:00:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-15 22:00:06,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2512 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1135, Invalid=10421, Unknown=0, NotChecked=0, Total=11556 [2023-12-15 22:00:06,452 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 304 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 22:00:06,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 587 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1462 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 22:00:06,454 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 22:00:06,473 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 22:00:06,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 22:00:06,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 22:00:06,656 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (240states) and FLOYD_HOARE automaton (currently 45 states, 66 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-15-4-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-9-4-1 context. [2023-12-15 22:00:06,660 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 22:00:06,662 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 22:00:06,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:00:06 BoogieIcfgContainer [2023-12-15 22:00:06,664 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 22:00:06,665 INFO L158 Benchmark]: Toolchain (without parser) took 68126.40ms. Allocated memory was 293.6MB in the beginning and 610.3MB in the end (delta: 316.7MB). Free memory was 250.1MB in the beginning and 312.2MB in the end (delta: -62.1MB). Peak memory consumption was 255.0MB. Max. memory is 8.0GB. [2023-12-15 22:00:06,665 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 221.2MB. Free memory was 171.5MB in the beginning and 171.4MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 22:00:06,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.14ms. Allocated memory is still 293.6MB. Free memory was 249.7MB in the beginning and 238.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 22:00:06,665 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.86ms. Allocated memory is still 293.6MB. Free memory was 238.2MB in the beginning and 236.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 22:00:06,665 INFO L158 Benchmark]: Boogie Preprocessor took 39.96ms. Allocated memory is still 293.6MB. Free memory was 236.5MB in the beginning and 234.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 22:00:06,665 INFO L158 Benchmark]: RCFGBuilder took 312.48ms. Allocated memory is still 293.6MB. Free memory was 234.0MB in the beginning and 219.1MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-15 22:00:06,666 INFO L158 Benchmark]: TraceAbstraction took 67541.32ms. Allocated memory was 293.6MB in the beginning and 610.3MB in the end (delta: 316.7MB). Free memory was 218.3MB in the beginning and 312.2MB in the end (delta: -94.0MB). Peak memory consumption was 223.5MB. Max. memory is 8.0GB. [2023-12-15 22:00:06,667 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 221.2MB. Free memory was 171.5MB in the beginning and 171.4MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.14ms. Allocated memory is still 293.6MB. Free memory was 249.7MB in the beginning and 238.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.86ms. Allocated memory is still 293.6MB. Free memory was 238.2MB in the beginning and 236.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.96ms. Allocated memory is still 293.6MB. Free memory was 236.5MB in the beginning and 234.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 312.48ms. Allocated memory is still 293.6MB. Free memory was 234.0MB in the beginning and 219.1MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 67541.32ms. Allocated memory was 293.6MB in the beginning and 610.3MB in the end (delta: 316.7MB). Free memory was 218.3MB in the beginning and 312.2MB in the end (delta: -94.0MB). Peak memory consumption was 223.5MB. 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: 16]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 16). Cancelled while NwaCegarLoop was constructing difference of abstraction (240states) and FLOYD_HOARE automaton (currently 45 states, 66 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-15-4-2-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-9-4-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.5s, OverallIterations: 13, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 23.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4646 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4646 mSDsluCounter, 6767 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6115 mSDsCounter, 611 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9212 IncrementalHoareTripleChecker+Invalid, 9823 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 611 mSolverCounterUnsat, 652 mSDtfsCounter, 9212 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1321 GetRequests, 776 SyntacticMatches, 43 SemanticMatches, 501 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13144 ImplicationChecksByTransitivity, 42.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=12, InterpolantAutomatonStates: 326, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 2729 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 40.3s InterpolantComputationTime, 952 NumberOfCodeBlocks, 884 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 1349 ConstructedInterpolants, 139 QuantifiedInterpolants, 24239 SizeOfPredicates, 102 NumberOfNonLiveVariables, 2180 ConjunctsInSsa, 286 ConjunctsInUnsatCore, 33 InterpolantComputations, 6 PerfectInterpolantSequences, 1880/2768 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