/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/eca-rers2012/Problem13_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:53:42,937 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:53:42,994 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 18:53:42,998 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:53:42,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:53:43,023 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:53:43,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:53:43,024 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:53:43,024 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:53:43,027 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:53:43,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:53:43,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:53:43,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:53:43,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:53:43,029 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:53:43,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:53:43,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:53:43,030 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:53:43,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:53:43,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:53:43,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:53:43,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:53:43,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:53:43,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:53:43,031 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:53:43,031 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:53:43,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:53:43,031 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:53:43,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:53:43,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:53:43,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:53:43,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:53:43,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:53:43,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:53:43,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:53:43,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:53:43,033 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:53:43,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:53:43,033 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:53:43,034 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:53:43,034 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:53:43,034 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:53:43,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:53:43,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:53:43,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:53:43,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:53:43,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:53:43,234 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:53:43,234 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:53:43,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label12.c [2023-12-15 18:53:44,218 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:53:44,565 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:53:44,566 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label12.c [2023-12-15 18:53:44,592 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/375c01c0e/295b8c764a7f4088bd24448b1387555b/FLAGf2ada6d50 [2023-12-15 18:53:44,606 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/375c01c0e/295b8c764a7f4088bd24448b1387555b [2023-12-15 18:53:44,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:53:44,609 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:53:44,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:53:44,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:53:44,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:53:44,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:53:44" (1/1) ... [2023-12-15 18:53:44,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55920206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:44, skipping insertion in model container [2023-12-15 18:53:44,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:53:44" (1/1) ... [2023-12-15 18:53:44,721 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:53:44,898 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label12.c[1672,1685] [2023-12-15 18:53:45,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:53:45,519 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:53:45,533 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label12.c[1672,1685] [2023-12-15 18:53:45,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:53:45,959 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:53:45,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45 WrapperNode [2023-12-15 18:53:45,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:53:45,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:53:45,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:53:45,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:53:45,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45" (1/1) ... [2023-12-15 18:53:46,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45" (1/1) ... [2023-12-15 18:53:46,371 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-15 18:53:46,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:53:46,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:53:46,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:53:46,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:53:46,380 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45" (1/1) ... [2023-12-15 18:53:46,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45" (1/1) ... [2023-12-15 18:53:46,541 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45" (1/1) ... [2023-12-15 18:53:46,666 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 18:53:46,666 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45" (1/1) ... [2023-12-15 18:53:46,666 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45" (1/1) ... [2023-12-15 18:53:46,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45" (1/1) ... [2023-12-15 18:53:46,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45" (1/1) ... [2023-12-15 18:53:46,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45" (1/1) ... [2023-12-15 18:53:46,904 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45" (1/1) ... [2023-12-15 18:53:46,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:53:46,962 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:53:46,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:53:46,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:53:46,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45" (1/1) ... [2023-12-15 18:53:46,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:53:46,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:53:46,987 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 18:53:47,007 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 18:53:47,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:53:47,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:53:47,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:53:47,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:53:47,061 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:53:47,062 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:53:50,677 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:53:50,717 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:53:50,717 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:53:50,717 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:53:50 BoogieIcfgContainer [2023-12-15 18:53:50,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:53:50,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:53:50,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:53:50,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:53:50,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:53:44" (1/3) ... [2023-12-15 18:53:50,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244a1c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:53:50, skipping insertion in model container [2023-12-15 18:53:50,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:53:45" (2/3) ... [2023-12-15 18:53:50,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244a1c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:53:50, skipping insertion in model container [2023-12-15 18:53:50,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:53:50" (3/3) ... [2023-12-15 18:53:50,722 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label12.c [2023-12-15 18:53:50,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:53:50,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:53:50,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:53:50,784 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;@702042af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:53:50,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:53:50,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states 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 18:53:50,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-15 18:53:50,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:50,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:50,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:50,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:50,798 INFO L85 PathProgramCache]: Analyzing trace with hash -398041703, now seen corresponding path program 1 times [2023-12-15 18:53:50,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:50,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577312186] [2023-12-15 18:53:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:50,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:50,932 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 18:53:50,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:50,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577312186] [2023-12-15 18:53:50,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577312186] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:50,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:50,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:50,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913914136] [2023-12-15 18:53:50,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:50,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 18:53:50,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:50,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 18:53:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 18:53:50,969 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 18:53:51,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:51,034 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-15 18:53:51,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 18:53:51,035 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-12-15 18:53:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:51,049 INFO L225 Difference]: With dead ends: 2071 [2023-12-15 18:53:51,049 INFO L226 Difference]: Without dead ends: 1034 [2023-12-15 18:53:51,055 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 18:53:51,058 INFO L413 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:51,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:53:51,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-15 18:53:51,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-15 18:53:51,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states 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 18:53:51,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-15 18:53:51,136 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 8 [2023-12-15 18:53:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:51,136 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-15 18:53:51,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 18:53:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-15 18:53:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-15 18:53:51,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:51,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:51,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:53:51,137 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:51,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:51,137 INFO L85 PathProgramCache]: Analyzing trace with hash -402786160, now seen corresponding path program 1 times [2023-12-15 18:53:51,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:51,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109035434] [2023-12-15 18:53:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:51,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:51,201 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 18:53:51,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:51,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109035434] [2023-12-15 18:53:51,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109035434] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:51,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:51,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:51,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327681869] [2023-12-15 18:53:51,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:51,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:51,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:51,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:51,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:51,204 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 18:53:54,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:54,551 INFO L93 Difference]: Finished difference Result 2905 states and 5325 transitions. [2023-12-15 18:53:54,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:54,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2023-12-15 18:53:54,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:54,560 INFO L225 Difference]: With dead ends: 2905 [2023-12-15 18:53:54,561 INFO L226 Difference]: Without dead ends: 1872 [2023-12-15 18:53:54,565 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 18:53:54,566 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 880 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:54,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 1090 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-15 18:53:54,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2023-12-15 18:53:54,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1858. [2023-12-15 18:53:54,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 1.5444264943457189) internal successors, (2868), 1857 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states 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 18:53:54,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2868 transitions. [2023-12-15 18:53:54,608 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2868 transitions. Word has length 8 [2023-12-15 18:53:54,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:54,608 INFO L495 AbstractCegarLoop]: Abstraction has 1858 states and 2868 transitions. [2023-12-15 18:53:54,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 18:53:54,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2868 transitions. [2023-12-15 18:53:54,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 18:53:54,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:54,610 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:54,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:53:54,611 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:54,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:54,612 INFO L85 PathProgramCache]: Analyzing trace with hash 675494308, now seen corresponding path program 1 times [2023-12-15 18:53:54,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:54,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961510202] [2023-12-15 18:53:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:54,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:54,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:53:54,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:54,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961510202] [2023-12-15 18:53:54,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961510202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:54,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:54,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:53:54,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638166976] [2023-12-15 18:53:54,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:54,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:53:54,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:54,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:53:54,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:53:54,794 INFO L87 Difference]: Start difference. First operand 1858 states and 2868 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:57,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:53:57,915 INFO L93 Difference]: Finished difference Result 5316 states and 8228 transitions. [2023-12-15 18:53:57,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:53:57,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-15 18:53:57,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:53:57,926 INFO L225 Difference]: With dead ends: 5316 [2023-12-15 18:53:57,926 INFO L226 Difference]: Without dead ends: 3459 [2023-12-15 18:53:57,929 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 18:53:57,933 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:53:57,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1190 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 18:53:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2023-12-15 18:53:57,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3458. [2023-12-15 18:53:57,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3457 states have (on average 1.380676887474689) internal successors, (4773), 3457 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states 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 18:53:57,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4773 transitions. [2023-12-15 18:53:57,985 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4773 transitions. Word has length 80 [2023-12-15 18:53:57,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:53:57,988 INFO L495 AbstractCegarLoop]: Abstraction has 3458 states and 4773 transitions. [2023-12-15 18:53:57,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:53:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4773 transitions. [2023-12-15 18:53:57,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-15 18:53:57,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:53:57,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:53:57,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:53:57,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:53:57,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:53:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1589809677, now seen corresponding path program 1 times [2023-12-15 18:53:57,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:53:57,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807592686] [2023-12-15 18:53:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:53:57,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:53:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:53:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:53:58,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:53:58,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807592686] [2023-12-15 18:53:58,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807592686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:53:58,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:53:58,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:53:58,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831342013] [2023-12-15 18:53:58,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:53:58,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:53:58,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:53:58,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:53:58,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:53:58,247 INFO L87 Difference]: Start difference. First operand 3458 states and 4773 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 18:54:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:02,372 INFO L93 Difference]: Finished difference Result 10869 states and 14767 transitions. [2023-12-15 18:54:02,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:54:02,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-15 18:54:02,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:02,391 INFO L225 Difference]: With dead ends: 10869 [2023-12-15 18:54:02,391 INFO L226 Difference]: Without dead ends: 7412 [2023-12-15 18:54:02,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 18:54:02,396 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 2581 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4118 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:02,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 1001 Invalid, 4949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4118 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-15 18:54:02,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7412 states. [2023-12-15 18:54:02,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7412 to 7411. [2023-12-15 18:54:02,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7411 states, 7410 states have (on average 1.269905533063428) internal successors, (9410), 7410 states have internal predecessors, (9410), 0 states have call successors, (0), 0 states 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 18:54:02,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 9410 transitions. [2023-12-15 18:54:02,486 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 9410 transitions. Word has length 94 [2023-12-15 18:54:02,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:02,486 INFO L495 AbstractCegarLoop]: Abstraction has 7411 states and 9410 transitions. [2023-12-15 18:54:02,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 18:54:02,487 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 9410 transitions. [2023-12-15 18:54:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-15 18:54:02,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:02,489 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:02,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:54:02,489 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:02,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:02,489 INFO L85 PathProgramCache]: Analyzing trace with hash -281858964, now seen corresponding path program 1 times [2023-12-15 18:54:02,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:02,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576494312] [2023-12-15 18:54:02,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:02,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-15 18:54:02,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:02,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576494312] [2023-12-15 18:54:02,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576494312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:02,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:02,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:02,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835380138] [2023-12-15 18:54:02,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:02,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:02,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:02,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:02,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:02,684 INFO L87 Difference]: Start difference. First operand 7411 states and 9410 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 18:54:05,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:05,688 INFO L93 Difference]: Finished difference Result 20354 states and 26250 transitions. [2023-12-15 18:54:05,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:05,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 175 [2023-12-15 18:54:05,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:05,717 INFO L225 Difference]: With dead ends: 20354 [2023-12-15 18:54:05,718 INFO L226 Difference]: Without dead ends: 13731 [2023-12-15 18:54:05,723 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 18:54:05,723 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 888 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:05,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 976 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-15 18:54:05,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13731 states. [2023-12-15 18:54:05,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13731 to 12936. [2023-12-15 18:54:05,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12936 states, 12935 states have (on average 1.2152299961345188) internal successors, (15719), 12935 states have internal predecessors, (15719), 0 states have call successors, (0), 0 states 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 18:54:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12936 states to 12936 states and 15719 transitions. [2023-12-15 18:54:05,898 INFO L78 Accepts]: Start accepts. Automaton has 12936 states and 15719 transitions. Word has length 175 [2023-12-15 18:54:05,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:05,900 INFO L495 AbstractCegarLoop]: Abstraction has 12936 states and 15719 transitions. [2023-12-15 18:54:05,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 18:54:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 12936 states and 15719 transitions. [2023-12-15 18:54:05,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-12-15 18:54:05,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:05,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:05,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:54:05,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:05,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:05,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1530412476, now seen corresponding path program 1 times [2023-12-15 18:54:05,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:05,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778901042] [2023-12-15 18:54:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:05,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:54:06,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:06,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778901042] [2023-12-15 18:54:06,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778901042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:06,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:06,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:06,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831888614] [2023-12-15 18:54:06,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:06,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:06,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:06,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:06,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:06,052 INFO L87 Difference]: Start difference. First operand 12936 states and 15719 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 18:54:08,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:08,871 INFO L93 Difference]: Finished difference Result 31391 states and 39118 transitions. [2023-12-15 18:54:08,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:08,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2023-12-15 18:54:08,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:08,915 INFO L225 Difference]: With dead ends: 31391 [2023-12-15 18:54:08,915 INFO L226 Difference]: Without dead ends: 19243 [2023-12-15 18:54:08,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:08,929 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 857 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:08,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 924 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-15 18:54:08,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19243 states. [2023-12-15 18:54:09,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19243 to 18446. [2023-12-15 18:54:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18446 states, 18445 states have (on average 1.20243968555164) internal successors, (22179), 18445 states have internal predecessors, (22179), 0 states have call successors, (0), 0 states 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 18:54:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18446 states to 18446 states and 22179 transitions. [2023-12-15 18:54:09,247 INFO L78 Accepts]: Start accepts. Automaton has 18446 states and 22179 transitions. Word has length 207 [2023-12-15 18:54:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:09,248 INFO L495 AbstractCegarLoop]: Abstraction has 18446 states and 22179 transitions. [2023-12-15 18:54:09,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 18:54:09,248 INFO L276 IsEmpty]: Start isEmpty. Operand 18446 states and 22179 transitions. [2023-12-15 18:54:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2023-12-15 18:54:09,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:09,253 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:09,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:54:09,253 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:09,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:09,254 INFO L85 PathProgramCache]: Analyzing trace with hash 612488369, now seen corresponding path program 1 times [2023-12-15 18:54:09,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:09,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377431820] [2023-12-15 18:54:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:09,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:09,444 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-15 18:54:09,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:09,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377431820] [2023-12-15 18:54:09,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377431820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:09,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:09,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:09,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094764476] [2023-12-15 18:54:09,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:09,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:09,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:09,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:09,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:09,446 INFO L87 Difference]: Start difference. First operand 18446 states and 22179 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 18:54:12,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:12,560 INFO L93 Difference]: Finished difference Result 42411 states and 52036 transitions. [2023-12-15 18:54:12,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:12,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 296 [2023-12-15 18:54:12,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:12,603 INFO L225 Difference]: With dead ends: 42411 [2023-12-15 18:54:12,603 INFO L226 Difference]: Without dead ends: 24753 [2023-12-15 18:54:12,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:12,623 INFO L413 NwaCegarLoop]: 1794 mSDtfsCounter, 861 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:12,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1944 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:54:12,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24753 states. [2023-12-15 18:54:12,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24753 to 23961. [2023-12-15 18:54:12,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23961 states, 23960 states have (on average 1.1787145242070116) internal successors, (28242), 23960 states have internal predecessors, (28242), 0 states have call successors, (0), 0 states 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 18:54:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23961 states to 23961 states and 28242 transitions. [2023-12-15 18:54:12,872 INFO L78 Accepts]: Start accepts. Automaton has 23961 states and 28242 transitions. Word has length 296 [2023-12-15 18:54:12,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:12,873 INFO L495 AbstractCegarLoop]: Abstraction has 23961 states and 28242 transitions. [2023-12-15 18:54:12,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 18:54:12,873 INFO L276 IsEmpty]: Start isEmpty. Operand 23961 states and 28242 transitions. [2023-12-15 18:54:12,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-15 18:54:12,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:12,876 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:12,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:54:12,876 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:12,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:12,878 INFO L85 PathProgramCache]: Analyzing trace with hash 87670239, now seen corresponding path program 1 times [2023-12-15 18:54:12,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:12,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787592722] [2023-12-15 18:54:12,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:12,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:13,106 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 18:54:13,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:13,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787592722] [2023-12-15 18:54:13,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787592722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:13,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:13,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:13,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595991262] [2023-12-15 18:54:13,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:13,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 18:54:13,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:13,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 18:54:13,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:54:13,109 INFO L87 Difference]: Start difference. First operand 23961 states and 28242 transitions. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states 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 18:54:19,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:19,178 INFO L93 Difference]: Finished difference Result 89063 states and 105283 transitions. [2023-12-15 18:54:19,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 18:54:19,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 305 [2023-12-15 18:54:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:19,261 INFO L225 Difference]: With dead ends: 89063 [2023-12-15 18:54:19,261 INFO L226 Difference]: Without dead ends: 65890 [2023-12-15 18:54:19,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 18:54:19,297 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1731 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6613 mSolverCounterSat, 1140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 7753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1140 IncrementalHoareTripleChecker+Valid, 6613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:19,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 676 Invalid, 7753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1140 Valid, 6613 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-15 18:54:19,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65890 states. [2023-12-15 18:54:19,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65890 to 64188. [2023-12-15 18:54:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64188 states, 64187 states have (on average 1.1559350024148192) internal successors, (74196), 64187 states have internal predecessors, (74196), 0 states have call successors, (0), 0 states 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 18:54:20,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64188 states to 64188 states and 74196 transitions. [2023-12-15 18:54:20,018 INFO L78 Accepts]: Start accepts. Automaton has 64188 states and 74196 transitions. Word has length 305 [2023-12-15 18:54:20,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:20,019 INFO L495 AbstractCegarLoop]: Abstraction has 64188 states and 74196 transitions. [2023-12-15 18:54:20,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states 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 18:54:20,019 INFO L276 IsEmpty]: Start isEmpty. Operand 64188 states and 74196 transitions. [2023-12-15 18:54:20,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-15 18:54:20,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:20,026 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:20,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:54:20,027 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:20,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:20,027 INFO L85 PathProgramCache]: Analyzing trace with hash -827529324, now seen corresponding path program 1 times [2023-12-15 18:54:20,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:20,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498636093] [2023-12-15 18:54:20,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:20,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-15 18:54:20,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:20,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498636093] [2023-12-15 18:54:20,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498636093] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:20,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:20,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 18:54:20,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520562368] [2023-12-15 18:54:20,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:20,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:20,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:20,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:20,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:20,256 INFO L87 Difference]: Start difference. First operand 64188 states and 74196 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 18:54:23,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:23,641 INFO L93 Difference]: Finished difference Result 140989 states and 162391 transitions. [2023-12-15 18:54:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:23,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 305 [2023-12-15 18:54:23,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:23,831 INFO L225 Difference]: With dead ends: 140989 [2023-12-15 18:54:23,831 INFO L226 Difference]: Without dead ends: 77589 [2023-12-15 18:54:23,860 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 18:54:23,861 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 728 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:23,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1196 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 18:54:23,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77589 states. [2023-12-15 18:54:24,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77589 to 76793. [2023-12-15 18:54:24,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76793 states, 76792 states have (on average 1.139571830399) internal successors, (87510), 76792 states have internal predecessors, (87510), 0 states have call successors, (0), 0 states 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 18:54:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76793 states to 76793 states and 87510 transitions. [2023-12-15 18:54:24,638 INFO L78 Accepts]: Start accepts. Automaton has 76793 states and 87510 transitions. Word has length 305 [2023-12-15 18:54:24,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:24,639 INFO L495 AbstractCegarLoop]: Abstraction has 76793 states and 87510 transitions. [2023-12-15 18:54:24,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 18:54:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand 76793 states and 87510 transitions. [2023-12-15 18:54:24,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-15 18:54:24,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:24,644 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:24,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:54:24,644 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:24,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:24,645 INFO L85 PathProgramCache]: Analyzing trace with hash 131415786, now seen corresponding path program 1 times [2023-12-15 18:54:24,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:24,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903081543] [2023-12-15 18:54:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:24,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 182 proven. 113 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 18:54:25,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:25,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903081543] [2023-12-15 18:54:25,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903081543] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 18:54:25,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48079741] [2023-12-15 18:54:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:25,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 18:54:25,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:54:25,772 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 18:54:25,773 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 18:54:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:25,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 18:54:25,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 18:54:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-15 18:54:26,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 18:54:26,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48079741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:26,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 18:54:26,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-15 18:54:26,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29827136] [2023-12-15 18:54:26,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:26,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:26,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:26,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:26,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:54:26,014 INFO L87 Difference]: Start difference. First operand 76793 states and 87510 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:28,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:28,863 INFO L93 Difference]: Finished difference Result 152796 states and 174226 transitions. [2023-12-15 18:54:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:28,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 334 [2023-12-15 18:54:28,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:28,950 INFO L225 Difference]: With dead ends: 152796 [2023-12-15 18:54:28,950 INFO L226 Difference]: Without dead ends: 76791 [2023-12-15 18:54:28,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-15 18:54:28,989 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 1122 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:28,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1440 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:54:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76791 states. [2023-12-15 18:54:29,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76791 to 76003. [2023-12-15 18:54:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76003 states, 76002 states have (on average 1.1082339938422674) internal successors, (84228), 76002 states have internal predecessors, (84228), 0 states have call successors, (0), 0 states 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 18:54:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76003 states to 76003 states and 84228 transitions. [2023-12-15 18:54:29,735 INFO L78 Accepts]: Start accepts. Automaton has 76003 states and 84228 transitions. Word has length 334 [2023-12-15 18:54:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:29,735 INFO L495 AbstractCegarLoop]: Abstraction has 76003 states and 84228 transitions. [2023-12-15 18:54:29,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:54:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 76003 states and 84228 transitions. [2023-12-15 18:54:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-12-15 18:54:29,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:29,740 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:29,747 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 18:54:29,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-15 18:54:29,947 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:29,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1926537495, now seen corresponding path program 1 times [2023-12-15 18:54:29,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:29,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353616485] [2023-12-15 18:54:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:29,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-12-15 18:54:30,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:30,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353616485] [2023-12-15 18:54:30,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353616485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:30,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:30,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:30,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71986739] [2023-12-15 18:54:30,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:30,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:30,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:30,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:30,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:30,123 INFO L87 Difference]: Start difference. First operand 76003 states and 84228 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 18:54:33,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:33,672 INFO L93 Difference]: Finished difference Result 170116 states and 190567 transitions. [2023-12-15 18:54:33,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:33,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 364 [2023-12-15 18:54:33,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:33,779 INFO L225 Difference]: With dead ends: 170116 [2023-12-15 18:54:33,779 INFO L226 Difference]: Without dead ends: 94901 [2023-12-15 18:54:33,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:33,827 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 902 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:33,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 907 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-15 18:54:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94901 states. [2023-12-15 18:54:34,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94901 to 93309. [2023-12-15 18:54:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93309 states, 93308 states have (on average 1.1153170146182536) internal successors, (104068), 93308 states have internal predecessors, (104068), 0 states have call successors, (0), 0 states 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 18:54:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93309 states to 93309 states and 104068 transitions. [2023-12-15 18:54:35,198 INFO L78 Accepts]: Start accepts. Automaton has 93309 states and 104068 transitions. Word has length 364 [2023-12-15 18:54:35,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:35,198 INFO L495 AbstractCegarLoop]: Abstraction has 93309 states and 104068 transitions. [2023-12-15 18:54:35,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 18:54:35,199 INFO L276 IsEmpty]: Start isEmpty. Operand 93309 states and 104068 transitions. [2023-12-15 18:54:35,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2023-12-15 18:54:35,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:35,204 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:35,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:54:35,205 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:35,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:35,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1101547844, now seen corresponding path program 1 times [2023-12-15 18:54:35,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:35,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630708461] [2023-12-15 18:54:35,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:35,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-15 18:54:35,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:35,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630708461] [2023-12-15 18:54:35,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630708461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:35,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:35,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:35,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310355794] [2023-12-15 18:54:35,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:35,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:35,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:35,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:35,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:35,394 INFO L87 Difference]: Start difference. First operand 93309 states and 104068 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 18:54:38,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:38,756 INFO L93 Difference]: Finished difference Result 185839 states and 207364 transitions. [2023-12-15 18:54:38,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:38,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 402 [2023-12-15 18:54:38,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:54:38,857 INFO L225 Difference]: With dead ends: 185839 [2023-12-15 18:54:38,857 INFO L226 Difference]: Without dead ends: 93318 [2023-12-15 18:54:38,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:38,897 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 795 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:38,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1864 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 18:54:38,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93318 states. [2023-12-15 18:54:39,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93318 to 93299. [2023-12-15 18:54:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93299 states, 93298 states have (on average 1.0810521125854788) internal successors, (100860), 93298 states have internal predecessors, (100860), 0 states have call successors, (0), 0 states 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 18:54:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93299 states to 93299 states and 100860 transitions. [2023-12-15 18:54:39,802 INFO L78 Accepts]: Start accepts. Automaton has 93299 states and 100860 transitions. Word has length 402 [2023-12-15 18:54:39,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:54:39,802 INFO L495 AbstractCegarLoop]: Abstraction has 93299 states and 100860 transitions. [2023-12-15 18:54:39,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 18:54:39,802 INFO L276 IsEmpty]: Start isEmpty. Operand 93299 states and 100860 transitions. [2023-12-15 18:54:39,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2023-12-15 18:54:39,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:54:39,809 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:39,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:54:39,809 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:54:39,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:54:39,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1257313501, now seen corresponding path program 1 times [2023-12-15 18:54:39,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:54:39,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134019143] [2023-12-15 18:54:39,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:54:39,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:54:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:54:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 18:54:40,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:54:40,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134019143] [2023-12-15 18:54:40,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134019143] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:54:40,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:54:40,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:54:40,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070289518] [2023-12-15 18:54:40,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:54:40,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:54:40,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:54:40,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:54:40,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:40,110 INFO L87 Difference]: Start difference. First operand 93299 states and 100860 transitions. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 18:54:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:54:43,126 INFO L93 Difference]: Finished difference Result 192870 states and 208132 transitions. [2023-12-15 18:54:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:54:43,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 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 430 [2023-12-15 18:54:43,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2023-12-15 18:54:43,252 INFO L225 Difference]: With dead ends: 192870 [2023-12-15 18:54:43,252 INFO L226 Difference]: Without dead ends: 99572 [2023-12-15 18:54:43,263 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 18:54:43,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:54:43,287 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 1023 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 18:54:43,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1624 Invalid, 2938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 18:54:43,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99572 states. [2023-12-15 18:54:43,357 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 18:54:43,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:54:43,357 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 18:54:43,360 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:54:43,361 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 18:54:43,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 06:54:43 BoogieIcfgContainer [2023-12-15 18:54:43,363 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 18:54:43,363 INFO L158 Benchmark]: Toolchain (without parser) took 58754.01ms. Allocated memory was 248.5MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 178.2MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-15 18:54:43,363 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 18:54:43,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1350.01ms. Allocated memory is still 248.5MB. Free memory was 177.9MB in the beginning and 147.6MB in the end (delta: 30.4MB). Peak memory consumption was 141.9MB. Max. memory is 8.0GB. [2023-12-15 18:54:43,363 INFO L158 Benchmark]: Boogie Procedure Inliner took 409.58ms. Allocated memory was 248.5MB in the beginning and 374.3MB in the end (delta: 125.8MB). Free memory was 147.1MB in the beginning and 204.8MB in the end (delta: -57.7MB). Peak memory consumption was 67.1MB. Max. memory is 8.0GB. [2023-12-15 18:54:43,364 INFO L158 Benchmark]: Boogie Preprocessor took 589.10ms. Allocated memory is still 374.3MB. Free memory was 204.8MB in the beginning and 198.5MB in the end (delta: 6.3MB). Peak memory consumption was 91.8MB. Max. memory is 8.0GB. [2023-12-15 18:54:43,364 INFO L158 Benchmark]: RCFGBuilder took 3755.10ms. Allocated memory was 374.3MB in the beginning and 748.7MB in the end (delta: 374.3MB). Free memory was 198.5MB in the beginning and 453.8MB in the end (delta: -255.3MB). Peak memory consumption was 292.6MB. Max. memory is 8.0GB. [2023-12-15 18:54:43,364 INFO L158 Benchmark]: TraceAbstraction took 52644.05ms. Allocated memory was 748.7MB in the beginning and 3.8GB in the end (delta: 3.1GB). Free memory was 452.8MB in the beginning and 2.8GB in the end (delta: -2.3GB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2023-12-15 18:54:43,365 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 189.8MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1350.01ms. Allocated memory is still 248.5MB. Free memory was 177.9MB in the beginning and 147.6MB in the end (delta: 30.4MB). Peak memory consumption was 141.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 409.58ms. Allocated memory was 248.5MB in the beginning and 374.3MB in the end (delta: 125.8MB). Free memory was 147.1MB in the beginning and 204.8MB in the end (delta: -57.7MB). Peak memory consumption was 67.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 589.10ms. Allocated memory is still 374.3MB. Free memory was 204.8MB in the beginning and 198.5MB in the end (delta: 6.3MB). Peak memory consumption was 91.8MB. Max. memory is 8.0GB. * RCFGBuilder took 3755.10ms. Allocated memory was 374.3MB in the beginning and 748.7MB in the end (delta: 374.3MB). Free memory was 198.5MB in the beginning and 453.8MB in the end (delta: -255.3MB). Peak memory consumption was 292.6MB. Max. memory is 8.0GB. * TraceAbstraction took 52644.05ms. Allocated memory was 748.7MB in the beginning and 3.8GB in the end (delta: 3.1GB). Free memory was 452.8MB in the beginning and 2.8GB in the end (delta: -2.3GB). Peak memory consumption was 1.0GB. 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: 49]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 49). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1036 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.6s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 43.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13194 SdHoareTripleChecker+Valid, 38.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13194 mSDsluCounter, 16708 SdHoareTripleChecker+Invalid, 31.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1861 mSDsCounter, 8875 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35527 IncrementalHoareTripleChecker+Invalid, 44402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8875 mSolverCounterUnsat, 14847 mSDtfsCounter, 35527 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 372 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93309occurred in iteration=11, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 7297 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 3342 NumberOfCodeBlocks, 3342 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3328 ConstructedInterpolants, 0 QuantifiedInterpolants, 10134 SizeOfPredicates, 0 NumberOfNonLiveVariables, 472 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 14 InterpolantComputations, 13 PerfectInterpolantSequences, 2944/3057 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