/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/Problem16_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:06:20,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:06:20,546 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 19:06:20,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:06:20,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:06:20,574 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:06:20,575 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:06:20,575 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:06:20,575 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:06:20,576 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:06:20,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:06:20,576 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:06:20,577 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:06:20,577 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:06:20,577 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:06:20,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:06:20,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:06:20,581 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:06:20,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:06:20,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:06:20,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:06:20,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:06:20,582 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:06:20,582 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:06:20,582 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:06:20,583 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:06:20,583 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:06:20,583 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:06:20,583 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:06:20,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:06:20,584 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:06:20,584 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:06:20,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:06:20,585 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:06:20,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:06:20,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:06:20,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:06:20,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:06:20,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:06:20,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:06:20,585 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:06:20,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:06:20,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:06:20,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:06:20,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:06:20,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:06:20,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:06:20,787 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:06:20,787 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:06:20,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label37.c [2023-12-15 19:06:21,836 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:06:22,172 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:06:22,173 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label37.c [2023-12-15 19:06:22,202 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/154da7346/6c703d1e19e4462ea77f6d42262796bd/FLAGf7069b851 [2023-12-15 19:06:22,212 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/154da7346/6c703d1e19e4462ea77f6d42262796bd [2023-12-15 19:06:22,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:06:22,214 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:06:22,215 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:06:22,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:06:22,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:06:22,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:22,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8f3dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22, skipping insertion in model container [2023-12-15 19:06:22,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:22,300 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:06:22,443 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/Problem16_label37.c[2305,2318] [2023-12-15 19:06:22,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:06:22,781 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:06:22,797 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/Problem16_label37.c[2305,2318] [2023-12-15 19:06:22,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:06:22,923 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:06:22,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22 WrapperNode [2023-12-15 19:06:22,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:06:22,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:06:22,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:06:22,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:06:22,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:22,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:23,067 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2023-12-15 19:06:23,067 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:06:23,068 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:06:23,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:06:23,068 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:06:23,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:23,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:23,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:23,142 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 19:06:23,143 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:23,143 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:23,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:23,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:23,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:23,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:23,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:06:23,271 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:06:23,271 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:06:23,271 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:06:23,271 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22" (1/1) ... [2023-12-15 19:06:23,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:06:23,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:06:23,295 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 19:06:23,318 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 19:06:23,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:06:23,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:06:23,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:06:23,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:06:23,372 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:06:23,373 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:06:24,922 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:06:24,962 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:06:24,962 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:06:24,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:06:24 BoogieIcfgContainer [2023-12-15 19:06:24,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:06:24,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:06:24,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:06:24,966 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:06:24,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:06:22" (1/3) ... [2023-12-15 19:06:24,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0921f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:06:24, skipping insertion in model container [2023-12-15 19:06:24,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:06:22" (2/3) ... [2023-12-15 19:06:24,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0921f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:06:24, skipping insertion in model container [2023-12-15 19:06:24,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:06:24" (3/3) ... [2023-12-15 19:06:24,969 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label37.c [2023-12-15 19:06:24,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:06:24,982 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:06:25,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:06:25,041 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;@16871d6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:06:25,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:06:25,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states 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 19:06:25,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-15 19:06:25,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:25,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:06:25,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:25,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:25,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1055053910, now seen corresponding path program 1 times [2023-12-15 19:06:25,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:25,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94664869] [2023-12-15 19:06:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:25,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:25,186 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 19:06:25,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:25,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94664869] [2023-12-15 19:06:25,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94664869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:25,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:25,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:06:25,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136252908] [2023-12-15 19:06:25,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:25,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:06:25,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:25,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:06:25,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:06:25,222 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:25,265 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2023-12-15 19:06:25,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:06:25,276 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-15 19:06:25,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:25,286 INFO L225 Difference]: With dead ends: 667 [2023-12-15 19:06:25,286 INFO L226 Difference]: Without dead ends: 332 [2023-12-15 19:06:25,289 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 19:06:25,292 INFO L413 NwaCegarLoop]: 596 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, 596 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 19:06:25,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:06:25,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-15 19:06:25,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2023-12-15 19:06:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 19:06:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2023-12-15 19:06:25,375 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 19 [2023-12-15 19:06:25,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:25,376 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2023-12-15 19:06:25,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:25,376 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2023-12-15 19:06:25,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-15 19:06:25,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:25,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:06:25,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:06:25,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:25,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:25,377 INFO L85 PathProgramCache]: Analyzing trace with hash 2101873543, now seen corresponding path program 1 times [2023-12-15 19:06:25,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:25,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301818069] [2023-12-15 19:06:25,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:25,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:25,431 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 19:06:25,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:25,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301818069] [2023-12-15 19:06:25,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301818069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:25,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:25,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:06:25,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115152359] [2023-12-15 19:06:25,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:25,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:25,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:25,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:25,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:06:25,433 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:26,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:26,747 INFO L93 Difference]: Finished difference Result 992 states and 1785 transitions. [2023-12-15 19:06:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:26,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-15 19:06:26,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:26,759 INFO L225 Difference]: With dead ends: 992 [2023-12-15 19:06:26,759 INFO L226 Difference]: Without dead ends: 661 [2023-12-15 19:06:26,764 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 19:06:26,766 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 330 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:26,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 77 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:06:26,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-12-15 19:06:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2023-12-15 19:06:26,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.7015151515151514) internal successors, (1123), 660 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states 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 19:06:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1123 transitions. [2023-12-15 19:06:26,809 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1123 transitions. Word has length 19 [2023-12-15 19:06:26,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:26,810 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 1123 transitions. [2023-12-15 19:06:26,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:26,810 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1123 transitions. [2023-12-15 19:06:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-15 19:06:26,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:26,814 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 19:06:26,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:06:26,815 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:26,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:26,819 INFO L85 PathProgramCache]: Analyzing trace with hash -755206650, now seen corresponding path program 1 times [2023-12-15 19:06:26,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:26,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714365005] [2023-12-15 19:06:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:26,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:06:26,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:26,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714365005] [2023-12-15 19:06:26,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714365005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:26,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:26,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:06:26,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951537629] [2023-12-15 19:06:26,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:26,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:26,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:26,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:26,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:06:26,937 INFO L87 Difference]: Start difference. First operand 661 states and 1123 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 19:06:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:28,074 INFO L93 Difference]: Finished difference Result 1979 states and 3366 transitions. [2023-12-15 19:06:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:28,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-12-15 19:06:28,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:28,079 INFO L225 Difference]: With dead ends: 1979 [2023-12-15 19:06:28,079 INFO L226 Difference]: Without dead ends: 1319 [2023-12-15 19:06:28,080 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 19:06:28,081 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 343 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:28,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 75 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-15 19:06:28,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-12-15 19:06:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2023-12-15 19:06:28,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.6206373292867982) internal successors, (2136), 1318 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states 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 19:06:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2136 transitions. [2023-12-15 19:06:28,102 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2136 transitions. Word has length 85 [2023-12-15 19:06:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:28,103 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 2136 transitions. [2023-12-15 19:06:28,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 19:06:28,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2136 transitions. [2023-12-15 19:06:28,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-15 19:06:28,104 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:28,104 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-15 19:06:28,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:06:28,104 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:28,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:28,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1955472766, now seen corresponding path program 1 times [2023-12-15 19:06:28,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:28,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967313768] [2023-12-15 19:06:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:28,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:28,216 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:06:28,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:28,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967313768] [2023-12-15 19:06:28,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967313768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:28,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:28,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:06:28,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403840317] [2023-12-15 19:06:28,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:28,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:28,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:28,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:28,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:06:28,218 INFO L87 Difference]: Start difference. First operand 1319 states and 2136 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 19:06:29,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:29,228 INFO L93 Difference]: Finished difference Result 3295 states and 5284 transitions. [2023-12-15 19:06:29,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:29,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2023-12-15 19:06:29,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:29,234 INFO L225 Difference]: With dead ends: 3295 [2023-12-15 19:06:29,234 INFO L226 Difference]: Without dead ends: 1977 [2023-12-15 19:06:29,235 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 19:06:29,236 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 381 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:29,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 153 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 19:06:29,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2023-12-15 19:06:29,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1977. [2023-12-15 19:06:29,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1976 states have (on average 1.33248987854251) internal successors, (2633), 1976 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states 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 19:06:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2633 transitions. [2023-12-15 19:06:29,258 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2633 transitions. Word has length 86 [2023-12-15 19:06:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:29,259 INFO L495 AbstractCegarLoop]: Abstraction has 1977 states and 2633 transitions. [2023-12-15 19:06:29,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 19:06:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2633 transitions. [2023-12-15 19:06:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-15 19:06:29,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:29,261 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:29,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:06:29,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:29,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:29,261 INFO L85 PathProgramCache]: Analyzing trace with hash -430353384, now seen corresponding path program 1 times [2023-12-15 19:06:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:29,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700854033] [2023-12-15 19:06:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:29,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:06:29,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:29,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700854033] [2023-12-15 19:06:29,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700854033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:29,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:29,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:06:29,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308395027] [2023-12-15 19:06:29,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:29,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:29,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:29,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:29,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:06:29,403 INFO L87 Difference]: Start difference. First operand 1977 states and 2633 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:30,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:30,466 INFO L93 Difference]: Finished difference Result 5927 states and 7896 transitions. [2023-12-15 19:06:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:30,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2023-12-15 19:06:30,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:30,477 INFO L225 Difference]: With dead ends: 5927 [2023-12-15 19:06:30,477 INFO L226 Difference]: Without dead ends: 3951 [2023-12-15 19:06:30,479 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 19:06:30,485 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 181 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:30,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 257 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 19:06:30,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2023-12-15 19:06:30,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2023-12-15 19:06:30,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 1.2164556962025317) internal successors, (4805), 3950 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states 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 19:06:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 4805 transitions. [2023-12-15 19:06:30,547 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 4805 transitions. Word has length 178 [2023-12-15 19:06:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:30,549 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 4805 transitions. [2023-12-15 19:06:30,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:30,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 4805 transitions. [2023-12-15 19:06:30,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-15 19:06:30,555 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:30,555 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:30,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:06:30,555 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:30,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:30,557 INFO L85 PathProgramCache]: Analyzing trace with hash 431089153, now seen corresponding path program 1 times [2023-12-15 19:06:30,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:30,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338258836] [2023-12-15 19:06:30,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:30,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:31,110 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:06:31,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:31,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338258836] [2023-12-15 19:06:31,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338258836] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:31,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:31,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:06:31,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332909698] [2023-12-15 19:06:31,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:31,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:06:31,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:31,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:06:31,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:06:31,114 INFO L87 Difference]: Start difference. First operand 3951 states and 4805 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:32,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:32,188 INFO L93 Difference]: Finished difference Result 8242 states and 9962 transitions. [2023-12-15 19:06:32,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:06:32,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2023-12-15 19:06:32,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:32,200 INFO L225 Difference]: With dead ends: 8242 [2023-12-15 19:06:32,201 INFO L226 Difference]: Without dead ends: 4292 [2023-12-15 19:06:32,205 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 19:06:32,208 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 173 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:32,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 362 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 19:06:32,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2023-12-15 19:06:32,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 4280. [2023-12-15 19:06:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4279 states have (on average 1.2012152372049545) internal successors, (5140), 4279 states have internal predecessors, (5140), 0 states have call successors, (0), 0 states 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 19:06:32,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 5140 transitions. [2023-12-15 19:06:32,271 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 5140 transitions. Word has length 264 [2023-12-15 19:06:32,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:32,272 INFO L495 AbstractCegarLoop]: Abstraction has 4280 states and 5140 transitions. [2023-12-15 19:06:32,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 5140 transitions. [2023-12-15 19:06:32,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-15 19:06:32,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:32,275 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:32,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:06:32,275 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:32,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:32,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1110279900, now seen corresponding path program 1 times [2023-12-15 19:06:32,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:32,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688538192] [2023-12-15 19:06:32,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:32,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:32,638 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:06:32,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:32,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688538192] [2023-12-15 19:06:32,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688538192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:32,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:32,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 19:06:32,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787360799] [2023-12-15 19:06:32,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:32,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:06:32,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:32,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:06:32,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:06:32,642 INFO L87 Difference]: Start difference. First operand 4280 states and 5140 transitions. Second operand has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 19:06:34,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:34,216 INFO L93 Difference]: Finished difference Result 8089 states and 9791 transitions. [2023-12-15 19:06:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 19:06:34,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 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 351 [2023-12-15 19:06:34,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:34,229 INFO L225 Difference]: With dead ends: 8089 [2023-12-15 19:06:34,229 INFO L226 Difference]: Without dead ends: 3951 [2023-12-15 19:06:34,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:06:34,234 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 288 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:34,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 293 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:06:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2023-12-15 19:06:34,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2023-12-15 19:06:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 1.080253164556962) internal successors, (4267), 3950 states have internal predecessors, (4267), 0 states have call successors, (0), 0 states 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 19:06:34,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 4267 transitions. [2023-12-15 19:06:34,280 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 4267 transitions. Word has length 351 [2023-12-15 19:06:34,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:34,281 INFO L495 AbstractCegarLoop]: Abstraction has 3951 states and 4267 transitions. [2023-12-15 19:06:34,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 50.142857142857146) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 19:06:34,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 4267 transitions. [2023-12-15 19:06:34,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2023-12-15 19:06:34,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:34,284 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:34,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 19:06:34,284 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:34,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:34,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1982629094, now seen corresponding path program 1 times [2023-12-15 19:06:34,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:34,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249949567] [2023-12-15 19:06:34,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:34,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-12-15 19:06:34,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:34,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249949567] [2023-12-15 19:06:34,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249949567] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:06:34,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515348846] [2023-12-15 19:06:34,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:34,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:06:34,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:06:34,678 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 19:06:34,724 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 19:06:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:34,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:06:34,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:06:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-12-15 19:06:34,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:06:34,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515348846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:34,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:06:34,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 19:06:34,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033776061] [2023-12-15 19:06:34,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:34,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:34,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:34,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:34,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:06:34,927 INFO L87 Difference]: Start difference. First operand 3951 states and 4267 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:35,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:35,759 INFO L93 Difference]: Finished difference Result 9546 states and 10413 transitions. [2023-12-15 19:06:35,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:35,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2023-12-15 19:06:35,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:35,773 INFO L225 Difference]: With dead ends: 9546 [2023-12-15 19:06:35,773 INFO L226 Difference]: Without dead ends: 5925 [2023-12-15 19:06:35,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:06:35,777 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 328 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:35,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 38 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 19:06:35,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2023-12-15 19:06:35,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5925. [2023-12-15 19:06:35,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5925 states, 5924 states have (on average 1.0828831870357867) internal successors, (6415), 5924 states have internal predecessors, (6415), 0 states have call successors, (0), 0 states 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 19:06:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5925 states to 5925 states and 6415 transitions. [2023-12-15 19:06:35,885 INFO L78 Accepts]: Start accepts. Automaton has 5925 states and 6415 transitions. Word has length 358 [2023-12-15 19:06:35,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:35,885 INFO L495 AbstractCegarLoop]: Abstraction has 5925 states and 6415 transitions. [2023-12-15 19:06:35,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:06:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5925 states and 6415 transitions. [2023-12-15 19:06:35,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-12-15 19:06:35,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:35,891 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:06:35,899 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 19:06:36,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:06:36,096 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:36,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:36,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1032875318, now seen corresponding path program 1 times [2023-12-15 19:06:36,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:36,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596641086] [2023-12-15 19:06:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:36,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-15 19:06:36,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:36,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596641086] [2023-12-15 19:06:36,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596641086] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:06:36,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209209345] [2023-12-15 19:06:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:36,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:06:36,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:06:36,539 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:06:36,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:06:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:36,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:06:36,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:06:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-15 19:06:36,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:06:36,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209209345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:36,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:06:36,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 19:06:36,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304274412] [2023-12-15 19:06:36,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:36,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:36,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:36,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:36,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:06:36,738 INFO L87 Difference]: Start difference. First operand 5925 states and 6415 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 19:06:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:37,610 INFO L93 Difference]: Finished difference Result 13494 states and 14709 transitions. [2023-12-15 19:06:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:37,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 475 [2023-12-15 19:06:37,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:37,639 INFO L225 Difference]: With dead ends: 13494 [2023-12-15 19:06:37,639 INFO L226 Difference]: Without dead ends: 7899 [2023-12-15 19:06:37,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:06:37,647 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 329 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:37,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 31 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 19:06:37,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2023-12-15 19:06:37,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7570. [2023-12-15 19:06:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7569 states have (on average 1.0908970801955344) internal successors, (8257), 7569 states have internal predecessors, (8257), 0 states have call successors, (0), 0 states 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 19:06:37,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 8257 transitions. [2023-12-15 19:06:37,756 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 8257 transitions. Word has length 475 [2023-12-15 19:06:37,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:37,757 INFO L495 AbstractCegarLoop]: Abstraction has 7570 states and 8257 transitions. [2023-12-15 19:06:37,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 19:06:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 8257 transitions. [2023-12-15 19:06:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2023-12-15 19:06:37,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:37,764 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:06:37,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 19:06:37,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-15 19:06:37,969 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:37,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:37,970 INFO L85 PathProgramCache]: Analyzing trace with hash -853453568, now seen corresponding path program 1 times [2023-12-15 19:06:37,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:37,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754593982] [2023-12-15 19:06:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:37,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 35 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:06:38,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:38,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754593982] [2023-12-15 19:06:38,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754593982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:06:38,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323939472] [2023-12-15 19:06:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:38,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:06:38,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:06:38,771 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:06:38,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:06:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:38,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:06:38,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:06:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-15 19:06:39,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:06:39,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323939472] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:39,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:06:39,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2023-12-15 19:06:39,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958635173] [2023-12-15 19:06:39,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:39,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:39,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:39,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:39,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:06:39,407 INFO L87 Difference]: Start difference. First operand 7570 states and 8257 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 19:06:40,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:40,114 INFO L93 Difference]: Finished difference Result 9546 states and 10296 transitions. [2023-12-15 19:06:40,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:40,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 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 542 [2023-12-15 19:06:40,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:40,130 INFO L225 Difference]: With dead ends: 9546 [2023-12-15 19:06:40,130 INFO L226 Difference]: Without dead ends: 9544 [2023-12-15 19:06:40,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:06:40,133 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 63 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:40,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 81 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:06:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9544 states. [2023-12-15 19:06:40,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9544 to 7570. [2023-12-15 19:06:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7570 states, 7569 states have (on average 1.090764962346413) internal successors, (8256), 7569 states have internal predecessors, (8256), 0 states have call successors, (0), 0 states 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 19:06:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7570 states to 7570 states and 8256 transitions. [2023-12-15 19:06:40,215 INFO L78 Accepts]: Start accepts. Automaton has 7570 states and 8256 transitions. Word has length 542 [2023-12-15 19:06:40,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:40,216 INFO L495 AbstractCegarLoop]: Abstraction has 7570 states and 8256 transitions. [2023-12-15 19:06:40,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 19:06:40,216 INFO L276 IsEmpty]: Start isEmpty. Operand 7570 states and 8256 transitions. [2023-12-15 19:06:40,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2023-12-15 19:06:40,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:40,236 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-12-15 19:06:40,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 19:06:40,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:06:40,441 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:40,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:40,442 INFO L85 PathProgramCache]: Analyzing trace with hash 454672487, now seen corresponding path program 1 times [2023-12-15 19:06:40,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:40,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532497642] [2023-12-15 19:06:40,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:40,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 809 proven. 0 refuted. 0 times theorem prover too weak. 749 trivial. 0 not checked. [2023-12-15 19:06:41,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:41,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532497642] [2023-12-15 19:06:41,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532497642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:41,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:41,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:06:41,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152359561] [2023-12-15 19:06:41,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:41,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:41,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:41,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:41,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:06:41,200 INFO L87 Difference]: Start difference. First operand 7570 states and 8256 transitions. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 2 states have internal predecessors, (397), 0 states have call successors, (0), 0 states 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 19:06:42,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:42,095 INFO L93 Difference]: Finished difference Result 15139 states and 16517 transitions. [2023-12-15 19:06:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:42,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 2 states have internal predecessors, (397), 0 states have call successors, (0), 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 888 [2023-12-15 19:06:42,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:42,106 INFO L225 Difference]: With dead ends: 15139 [2023-12-15 19:06:42,106 INFO L226 Difference]: Without dead ends: 7899 [2023-12-15 19:06:42,112 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 19:06:42,112 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 85 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:42,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 108 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 19:06:42,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2023-12-15 19:06:42,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7899. [2023-12-15 19:06:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 7898 states have (on average 1.0878703469232718) internal successors, (8592), 7898 states have internal predecessors, (8592), 0 states have call successors, (0), 0 states 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 19:06:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 8592 transitions. [2023-12-15 19:06:42,180 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 8592 transitions. Word has length 888 [2023-12-15 19:06:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:42,181 INFO L495 AbstractCegarLoop]: Abstraction has 7899 states and 8592 transitions. [2023-12-15 19:06:42,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 2 states have internal predecessors, (397), 0 states have call successors, (0), 0 states 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 19:06:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 8592 transitions. [2023-12-15 19:06:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2023-12-15 19:06:42,192 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:42,193 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2023-12-15 19:06:42,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:06:42,194 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:42,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:42,194 INFO L85 PathProgramCache]: Analyzing trace with hash -912143789, now seen corresponding path program 1 times [2023-12-15 19:06:42,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:42,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756948137] [2023-12-15 19:06:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:42,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 888 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2023-12-15 19:06:42,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:42,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756948137] [2023-12-15 19:06:42,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756948137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:42,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:42,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:06:42,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092664234] [2023-12-15 19:06:42,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:42,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:42,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:42,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:42,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:06:42,661 INFO L87 Difference]: Start difference. First operand 7899 states and 8592 transitions. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states 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 19:06:43,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:43,417 INFO L93 Difference]: Finished difference Result 19416 states and 21298 transitions. [2023-12-15 19:06:43,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:43,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 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 896 [2023-12-15 19:06:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:43,433 INFO L225 Difference]: With dead ends: 19416 [2023-12-15 19:06:43,434 INFO L226 Difference]: Without dead ends: 10531 [2023-12-15 19:06:43,441 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 19:06:43,441 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 270 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:43,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 427 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:06:43,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10531 states. [2023-12-15 19:06:43,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10531 to 10202. [2023-12-15 19:06:43,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10202 states, 10201 states have (on average 1.0729340260758748) internal successors, (10945), 10201 states have internal predecessors, (10945), 0 states have call successors, (0), 0 states 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 19:06:43,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10202 states to 10202 states and 10945 transitions. [2023-12-15 19:06:43,525 INFO L78 Accepts]: Start accepts. Automaton has 10202 states and 10945 transitions. Word has length 896 [2023-12-15 19:06:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:43,526 INFO L495 AbstractCegarLoop]: Abstraction has 10202 states and 10945 transitions. [2023-12-15 19:06:43,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states 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 19:06:43,526 INFO L276 IsEmpty]: Start isEmpty. Operand 10202 states and 10945 transitions. [2023-12-15 19:06:43,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1192 [2023-12-15 19:06:43,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:43,544 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:43,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 19:06:43,544 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:43,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1082786834, now seen corresponding path program 1 times [2023-12-15 19:06:43,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:43,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829896413] [2023-12-15 19:06:43,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:43,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:44,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 1775 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2023-12-15 19:06:44,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:44,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829896413] [2023-12-15 19:06:44,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829896413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:44,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:44,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 19:06:44,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074057648] [2023-12-15 19:06:44,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:44,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 19:06:44,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:44,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 19:06:44,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:06:44,844 INFO L87 Difference]: Start difference. First operand 10202 states and 10945 transitions. Second operand has 6 states, 6 states have (on average 115.33333333333333) internal successors, (692), 6 states have internal predecessors, (692), 0 states have call successors, (0), 0 states 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 19:06:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:45,907 INFO L93 Difference]: Finished difference Result 20433 states and 21937 transitions. [2023-12-15 19:06:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 19:06:45,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 115.33333333333333) internal successors, (692), 6 states have internal predecessors, (692), 0 states have call successors, (0), 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 1191 [2023-12-15 19:06:45,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:45,945 INFO L225 Difference]: With dead ends: 20433 [2023-12-15 19:06:45,945 INFO L226 Difference]: Without dead ends: 10890 [2023-12-15 19:06:45,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:06:45,955 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 452 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:45,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 562 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 19:06:45,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10890 states. [2023-12-15 19:06:46,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10890 to 10860. [2023-12-15 19:06:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10860 states, 10859 states have (on average 1.0689750437425176) internal successors, (11608), 10859 states have internal predecessors, (11608), 0 states have call successors, (0), 0 states 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 19:06:46,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10860 states to 10860 states and 11608 transitions. [2023-12-15 19:06:46,120 INFO L78 Accepts]: Start accepts. Automaton has 10860 states and 11608 transitions. Word has length 1191 [2023-12-15 19:06:46,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:46,120 INFO L495 AbstractCegarLoop]: Abstraction has 10860 states and 11608 transitions. [2023-12-15 19:06:46,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.33333333333333) internal successors, (692), 6 states have internal predecessors, (692), 0 states have call successors, (0), 0 states 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 19:06:46,121 INFO L276 IsEmpty]: Start isEmpty. Operand 10860 states and 11608 transitions. [2023-12-15 19:06:46,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1206 [2023-12-15 19:06:46,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:46,140 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:46,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 19:06:46,140 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:46,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:46,141 INFO L85 PathProgramCache]: Analyzing trace with hash 548788443, now seen corresponding path program 1 times [2023-12-15 19:06:46,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:46,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320915991] [2023-12-15 19:06:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:46,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2425 backedges. 1699 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2023-12-15 19:06:47,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:47,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320915991] [2023-12-15 19:06:47,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320915991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:47,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:47,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:06:47,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726932231] [2023-12-15 19:06:47,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:47,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:06:47,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:47,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:06:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:06:47,300 INFO L87 Difference]: Start difference. First operand 10860 states and 11608 transitions. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states 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 19:06:48,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:48,142 INFO L93 Difference]: Finished difference Result 21070 states and 22557 transitions. [2023-12-15 19:06:48,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:06:48,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 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 1205 [2023-12-15 19:06:48,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:48,165 INFO L225 Difference]: With dead ends: 21070 [2023-12-15 19:06:48,165 INFO L226 Difference]: Without dead ends: 10869 [2023-12-15 19:06:48,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 19:06:48,181 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 262 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:48,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 439 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 19:06:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10869 states. [2023-12-15 19:06:48,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10869 to 10531. [2023-12-15 19:06:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10531 states, 10530 states have (on average 1.070275403608737) internal successors, (11270), 10530 states have internal predecessors, (11270), 0 states have call successors, (0), 0 states 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 19:06:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10531 states to 10531 states and 11270 transitions. [2023-12-15 19:06:48,320 INFO L78 Accepts]: Start accepts. Automaton has 10531 states and 11270 transitions. Word has length 1205 [2023-12-15 19:06:48,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:48,320 INFO L495 AbstractCegarLoop]: Abstraction has 10531 states and 11270 transitions. [2023-12-15 19:06:48,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states 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 19:06:48,320 INFO L276 IsEmpty]: Start isEmpty. Operand 10531 states and 11270 transitions. [2023-12-15 19:06:48,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1208 [2023-12-15 19:06:48,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:48,336 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:06:48,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 19:06:48,336 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:48,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:48,337 INFO L85 PathProgramCache]: Analyzing trace with hash 690112979, now seen corresponding path program 1 times [2023-12-15 19:06:48,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:48,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104917226] [2023-12-15 19:06:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:48,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2733 backedges. 920 proven. 0 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2023-12-15 19:06:48,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:48,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104917226] [2023-12-15 19:06:48,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104917226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:48,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:48,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:06:48,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469518896] [2023-12-15 19:06:48,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:48,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:48,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:48,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:48,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:06:48,995 INFO L87 Difference]: Start difference. First operand 10531 states and 11270 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states 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 19:06:49,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:49,665 INFO L93 Difference]: Finished difference Result 23364 states and 25034 transitions. [2023-12-15 19:06:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:49,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 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 1207 [2023-12-15 19:06:49,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:49,678 INFO L225 Difference]: With dead ends: 23364 [2023-12-15 19:06:49,678 INFO L226 Difference]: Without dead ends: 11847 [2023-12-15 19:06:49,687 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 19:06:49,687 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 172 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:49,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 407 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:06:49,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11847 states. [2023-12-15 19:06:49,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11847 to 11847. [2023-12-15 19:06:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11847 states, 11846 states have (on average 1.049805841634307) internal successors, (12436), 11846 states have internal predecessors, (12436), 0 states have call successors, (0), 0 states 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 19:06:49,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11847 states to 11847 states and 12436 transitions. [2023-12-15 19:06:49,776 INFO L78 Accepts]: Start accepts. Automaton has 11847 states and 12436 transitions. Word has length 1207 [2023-12-15 19:06:49,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:49,776 INFO L495 AbstractCegarLoop]: Abstraction has 11847 states and 12436 transitions. [2023-12-15 19:06:49,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states 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 19:06:49,777 INFO L276 IsEmpty]: Start isEmpty. Operand 11847 states and 12436 transitions. [2023-12-15 19:06:49,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1340 [2023-12-15 19:06:49,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:49,795 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:06:49,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 19:06:49,795 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:49,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:49,796 INFO L85 PathProgramCache]: Analyzing trace with hash 295854769, now seen corresponding path program 1 times [2023-12-15 19:06:49,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:49,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272907738] [2023-12-15 19:06:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:49,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3662 backedges. 2452 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2023-12-15 19:06:50,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272907738] [2023-12-15 19:06:50,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272907738] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:50,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:50,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:06:50,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602232213] [2023-12-15 19:06:50,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:50,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:50,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:50,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:50,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:06:50,389 INFO L87 Difference]: Start difference. First operand 11847 states and 12436 transitions. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 19:06:51,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:51,102 INFO L93 Difference]: Finished difference Result 24022 states and 25230 transitions. [2023-12-15 19:06:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:51,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 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 1339 [2023-12-15 19:06:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:51,119 INFO L225 Difference]: With dead ends: 24022 [2023-12-15 19:06:51,119 INFO L226 Difference]: Without dead ends: 12834 [2023-12-15 19:06:51,127 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 19:06:51,128 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 195 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:51,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 415 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:06:51,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12834 states. [2023-12-15 19:06:51,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12834 to 12505. [2023-12-15 19:06:51,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12505 states, 12504 states have (on average 1.0407869481765835) internal successors, (13014), 12504 states have internal predecessors, (13014), 0 states have call successors, (0), 0 states 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 19:06:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12505 states to 12505 states and 13014 transitions. [2023-12-15 19:06:51,231 INFO L78 Accepts]: Start accepts. Automaton has 12505 states and 13014 transitions. Word has length 1339 [2023-12-15 19:06:51,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:51,231 INFO L495 AbstractCegarLoop]: Abstraction has 12505 states and 13014 transitions. [2023-12-15 19:06:51,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 19:06:51,232 INFO L276 IsEmpty]: Start isEmpty. Operand 12505 states and 13014 transitions. [2023-12-15 19:06:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1365 [2023-12-15 19:06:51,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:51,254 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:06:51,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 19:06:51,254 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:51,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:51,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1454099177, now seen corresponding path program 1 times [2023-12-15 19:06:51,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:51,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372088112] [2023-12-15 19:06:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:51,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3837 backedges. 2333 proven. 0 refuted. 0 times theorem prover too weak. 1504 trivial. 0 not checked. [2023-12-15 19:06:52,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:52,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372088112] [2023-12-15 19:06:52,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372088112] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:52,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:52,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:06:52,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756762891] [2023-12-15 19:06:52,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:52,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:52,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:52,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:52,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:06:52,284 INFO L87 Difference]: Start difference. First operand 12505 states and 13014 transitions. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 19:06:53,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:53,224 INFO L93 Difference]: Finished difference Result 25009 states and 26053 transitions. [2023-12-15 19:06:53,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:53,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 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 1364 [2023-12-15 19:06:53,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:53,235 INFO L225 Difference]: With dead ends: 25009 [2023-12-15 19:06:53,235 INFO L226 Difference]: Without dead ends: 13163 [2023-12-15 19:06:53,243 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 19:06:53,243 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 224 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:53,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 429 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 19:06:53,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2023-12-15 19:06:53,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 13163. [2023-12-15 19:06:53,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0382160765841058) internal successors, (13665), 13162 states have internal predecessors, (13665), 0 states have call successors, (0), 0 states 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 19:06:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13665 transitions. [2023-12-15 19:06:53,344 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13665 transitions. Word has length 1364 [2023-12-15 19:06:53,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:53,345 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 13665 transitions. [2023-12-15 19:06:53,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 19:06:53,345 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13665 transitions. [2023-12-15 19:06:53,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1390 [2023-12-15 19:06:53,363 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:53,363 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:53,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 19:06:53,364 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:53,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:53,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1582120483, now seen corresponding path program 1 times [2023-12-15 19:06:53,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:53,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567324516] [2023-12-15 19:06:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:53,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3413 backedges. 2413 proven. 0 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2023-12-15 19:06:54,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:54,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567324516] [2023-12-15 19:06:54,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567324516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:54,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:54,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:06:54,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426862264] [2023-12-15 19:06:54,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:54,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:06:54,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:54,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:06:54,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:06:54,275 INFO L87 Difference]: Start difference. First operand 13163 states and 13665 transitions. Second operand has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states 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 19:06:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:55,143 INFO L93 Difference]: Finished difference Result 25701 states and 26696 transitions. [2023-12-15 19:06:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 19:06:55,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 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 1389 [2023-12-15 19:06:55,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:55,154 INFO L225 Difference]: With dead ends: 25701 [2023-12-15 19:06:55,154 INFO L226 Difference]: Without dead ends: 13197 [2023-12-15 19:06:55,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 19:06:55,161 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 166 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:55,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 549 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-15 19:06:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13197 states. [2023-12-15 19:06:55,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13197 to 13163. [2023-12-15 19:06:55,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0373043610393557) internal successors, (13653), 13162 states have internal predecessors, (13653), 0 states have call successors, (0), 0 states 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 19:06:55,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13653 transitions. [2023-12-15 19:06:55,251 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13653 transitions. Word has length 1389 [2023-12-15 19:06:55,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:55,251 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 13653 transitions. [2023-12-15 19:06:55,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states 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 19:06:55,252 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13653 transitions. [2023-12-15 19:06:55,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1419 [2023-12-15 19:06:55,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:55,269 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:06:55,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 19:06:55,269 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:55,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:55,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1351735954, now seen corresponding path program 1 times [2023-12-15 19:06:55,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:55,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133933216] [2023-12-15 19:06:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:55,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3837 backedges. 1109 proven. 0 refuted. 0 times theorem prover too weak. 2728 trivial. 0 not checked. [2023-12-15 19:06:56,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:56,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133933216] [2023-12-15 19:06:56,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133933216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:56,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:06:56,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:06:56,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647165204] [2023-12-15 19:06:56,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:56,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:56,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:56,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:06:56,596 INFO L87 Difference]: Start difference. First operand 13163 states and 13653 transitions. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 19:06:57,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:57,177 INFO L93 Difference]: Finished difference Result 25996 states and 26974 transitions. [2023-12-15 19:06:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:57,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 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 1418 [2023-12-15 19:06:57,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:57,191 INFO L225 Difference]: With dead ends: 25996 [2023-12-15 19:06:57,191 INFO L226 Difference]: Without dead ends: 13163 [2023-12-15 19:06:57,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 19:06:57,200 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 169 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:57,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 366 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:06:57,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2023-12-15 19:06:57,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 13163. [2023-12-15 19:06:57,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.030618447044522) internal successors, (13565), 13162 states have internal predecessors, (13565), 0 states have call successors, (0), 0 states 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 19:06:57,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13565 transitions. [2023-12-15 19:06:57,303 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13565 transitions. Word has length 1418 [2023-12-15 19:06:57,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:06:57,303 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 13565 transitions. [2023-12-15 19:06:57,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 19:06:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13565 transitions. [2023-12-15 19:06:57,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1512 [2023-12-15 19:06:57,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:06:57,323 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2023-12-15 19:06:57,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 19:06:57,323 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:06:57,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:06:57,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1337234437, now seen corresponding path program 1 times [2023-12-15 19:06:57,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:06:57,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646323541] [2023-12-15 19:06:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:57,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:06:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 2715 proven. 202 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2023-12-15 19:06:58,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:06:58,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646323541] [2023-12-15 19:06:58,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646323541] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:06:58,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809230854] [2023-12-15 19:06:58,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:06:58,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:06:58,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:06:58,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:06:58,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:06:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:06:58,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 19:06:58,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:06:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 2233 proven. 0 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2023-12-15 19:06:59,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:06:59,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809230854] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:06:59,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:06:59,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-15 19:06:59,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149384297] [2023-12-15 19:06:59,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:06:59,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:06:59,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:06:59,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:06:59,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:06:59,330 INFO L87 Difference]: Start difference. First operand 13163 states and 13565 transitions. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 19:06:59,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:06:59,937 INFO L93 Difference]: Finished difference Result 25667 states and 26464 transitions. [2023-12-15 19:06:59,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:06:59,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 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 1511 [2023-12-15 19:06:59,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:06:59,949 INFO L225 Difference]: With dead ends: 25667 [2023-12-15 19:06:59,949 INFO L226 Difference]: Without dead ends: 13163 [2023-12-15 19:06:59,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1515 GetRequests, 1510 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:06:59,956 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 93 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:06:59,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 374 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 19:06:59,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2023-12-15 19:07:00,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 13163. [2023-12-15 19:07:00,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0289469685458137) internal successors, (13543), 13162 states have internal predecessors, (13543), 0 states have call successors, (0), 0 states 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 19:07:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13543 transitions. [2023-12-15 19:07:00,046 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13543 transitions. Word has length 1511 [2023-12-15 19:07:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:07:00,046 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 13543 transitions. [2023-12-15 19:07:00,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 19:07:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13543 transitions. [2023-12-15 19:07:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1747 [2023-12-15 19:07:00,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:07:00,069 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 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, 1, 1, 1, 1, 1] [2023-12-15 19:07:00,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 19:07:00,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:07:00,276 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:07:00,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:07:00,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1598699848, now seen corresponding path program 1 times [2023-12-15 19:07:00,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:07:00,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354374808] [2023-12-15 19:07:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:07:00,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:07:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:07:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 4080 proven. 90 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2023-12-15 19:07:02,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:07:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354374808] [2023-12-15 19:07:02,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354374808] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:07:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409059940] [2023-12-15 19:07:02,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:07:02,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:07:02,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:07:02,253 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:07:02,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 19:07:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:07:02,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 2007 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:07:02,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:07:03,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 2334 proven. 0 refuted. 0 times theorem prover too weak. 2919 trivial. 0 not checked. [2023-12-15 19:07:03,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:07:03,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409059940] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:07:03,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:07:03,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-15 19:07:03,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969489502] [2023-12-15 19:07:03,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:07:03,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:07:03,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:07:03,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:07:03,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:07:03,710 INFO L87 Difference]: Start difference. First operand 13163 states and 13543 transitions. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 2 states have internal predecessors, (583), 0 states have call successors, (0), 0 states 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 19:07:04,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:07:04,393 INFO L93 Difference]: Finished difference Result 25667 states and 26420 transitions. [2023-12-15 19:07:04,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:07:04,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 2 states have internal predecessors, (583), 0 states have call successors, (0), 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 1746 [2023-12-15 19:07:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:07:04,404 INFO L225 Difference]: With dead ends: 25667 [2023-12-15 19:07:04,405 INFO L226 Difference]: Without dead ends: 13163 [2023-12-15 19:07:04,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1752 GetRequests, 1746 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:07:04,413 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 87 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:07:04,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 79 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:07:04,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2023-12-15 19:07:04,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 13163. [2023-12-15 19:07:04,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0288709922504178) internal successors, (13542), 13162 states have internal predecessors, (13542), 0 states have call successors, (0), 0 states 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 19:07:04,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 13542 transitions. [2023-12-15 19:07:04,509 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 13542 transitions. Word has length 1746 [2023-12-15 19:07:04,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:07:04,510 INFO L495 AbstractCegarLoop]: Abstraction has 13163 states and 13542 transitions. [2023-12-15 19:07:04,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 2 states have internal predecessors, (583), 0 states have call successors, (0), 0 states 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 19:07:04,510 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 13542 transitions. [2023-12-15 19:07:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1777 [2023-12-15 19:07:04,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:07:04,535 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:04,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 19:07:04,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:07:04,741 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:07:04,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:07:04,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1762407479, now seen corresponding path program 1 times [2023-12-15 19:07:04,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:07:04,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42525768] [2023-12-15 19:07:04,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:07:04,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:07:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:07:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5962 backedges. 2328 proven. 156 refuted. 0 times theorem prover too weak. 3478 trivial. 0 not checked. [2023-12-15 19:07:06,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:07:06,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42525768] [2023-12-15 19:07:06,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42525768] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:07:06,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586443743] [2023-12-15 19:07:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:07:06,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:07:06,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:07:06,776 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:07:06,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 19:07:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:07:07,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 2059 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:07:07,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:07:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5962 backedges. 2484 proven. 0 refuted. 0 times theorem prover too weak. 3478 trivial. 0 not checked. [2023-12-15 19:07:07,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:07:07,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586443743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:07:07,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:07:07,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-15 19:07:07,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984380423] [2023-12-15 19:07:07,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:07:07,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:07:07,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:07:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:07:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:07:07,511 INFO L87 Difference]: Start difference. First operand 13163 states and 13542 transitions. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 19:07:08,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:07:08,268 INFO L93 Difference]: Finished difference Result 27970 states and 28797 transitions. [2023-12-15 19:07:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:07:08,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 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 1776 [2023-12-15 19:07:08,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:07:08,282 INFO L225 Difference]: With dead ends: 27970 [2023-12-15 19:07:08,283 INFO L226 Difference]: Without dead ends: 15466 [2023-12-15 19:07:08,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1780 GetRequests, 1775 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:07:08,291 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 173 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-15 19:07:08,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 77 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-15 19:07:08,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2023-12-15 19:07:08,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 14150. [2023-12-15 19:07:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14150 states, 14149 states have (on average 1.0289066365114143) internal successors, (14558), 14149 states have internal predecessors, (14558), 0 states have call successors, (0), 0 states 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 19:07:08,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14150 states to 14150 states and 14558 transitions. [2023-12-15 19:07:08,384 INFO L78 Accepts]: Start accepts. Automaton has 14150 states and 14558 transitions. Word has length 1776 [2023-12-15 19:07:08,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:07:08,385 INFO L495 AbstractCegarLoop]: Abstraction has 14150 states and 14558 transitions. [2023-12-15 19:07:08,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 19:07:08,385 INFO L276 IsEmpty]: Start isEmpty. Operand 14150 states and 14558 transitions. [2023-12-15 19:07:08,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1995 [2023-12-15 19:07:08,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:07:08,414 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 19:07:08,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 19:07:08,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:07:08,620 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:07:08,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:07:08,621 INFO L85 PathProgramCache]: Analyzing trace with hash 186637648, now seen corresponding path program 1 times [2023-12-15 19:07:08,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:07:08,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965804330] [2023-12-15 19:07:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:07:08,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:07:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:07:10,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7049 backedges. 4636 proven. 170 refuted. 0 times theorem prover too weak. 2243 trivial. 0 not checked. [2023-12-15 19:07:10,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:07:10,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965804330] [2023-12-15 19:07:10,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965804330] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:07:10,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677900968] [2023-12-15 19:07:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:07:10,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:07:10,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:07:10,018 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:07:10,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 19:07:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:07:10,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 2265 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-15 19:07:10,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:07:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7049 backedges. 4636 proven. 170 refuted. 0 times theorem prover too weak. 2243 trivial. 0 not checked. [2023-12-15 19:07:11,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:07:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7049 backedges. 4636 proven. 170 refuted. 0 times theorem prover too weak. 2243 trivial. 0 not checked. [2023-12-15 19:07:13,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677900968] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 19:07:13,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 19:07:13,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2023-12-15 19:07:13,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212933671] [2023-12-15 19:07:13,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 19:07:13,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 19:07:13,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:07:13,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 19:07:13,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:07:13,622 INFO L87 Difference]: Start difference. First operand 14150 states and 14558 transitions. Second operand has 7 states, 7 states have (on average 142.0) internal successors, (994), 6 states have internal predecessors, (994), 0 states have call successors, (0), 0 states 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 19:07:15,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:07:15,263 INFO L93 Difference]: Finished difference Result 28334 states and 29160 transitions. [2023-12-15 19:07:15,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-15 19:07:15,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 142.0) internal successors, (994), 6 states have internal predecessors, (994), 0 states have call successors, (0), 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 1994 [2023-12-15 19:07:15,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:07:15,276 INFO L225 Difference]: With dead ends: 28334 [2023-12-15 19:07:15,277 INFO L226 Difference]: Without dead ends: 14843 [2023-12-15 19:07:15,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3995 GetRequests, 3986 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-12-15 19:07:15,285 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 1109 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 3604 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 3723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 3604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:07:15,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 106 Invalid, 3723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 3604 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:07:15,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14843 states. [2023-12-15 19:07:15,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14843 to 14479. [2023-12-15 19:07:15,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14479 states, 14478 states have (on average 1.0259013675922088) internal successors, (14853), 14478 states have internal predecessors, (14853), 0 states have call successors, (0), 0 states 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 19:07:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14479 states to 14479 states and 14853 transitions. [2023-12-15 19:07:15,436 INFO L78 Accepts]: Start accepts. Automaton has 14479 states and 14853 transitions. Word has length 1994 [2023-12-15 19:07:15,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:07:15,436 INFO L495 AbstractCegarLoop]: Abstraction has 14479 states and 14853 transitions. [2023-12-15 19:07:15,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.0) internal successors, (994), 6 states have internal predecessors, (994), 0 states have call successors, (0), 0 states 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 19:07:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 14479 states and 14853 transitions. [2023-12-15 19:07:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2020 [2023-12-15 19:07:15,471 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:07:15,472 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 19:07:15,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 19:07:15,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:07:15,679 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:07:15,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:07:15,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1613672986, now seen corresponding path program 1 times [2023-12-15 19:07:15,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:07:15,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184474949] [2023-12-15 19:07:15,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:07:15,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:07:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:07:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7274 backedges. 4561 proven. 1745 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-12-15 19:07:19,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:07:19,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184474949] [2023-12-15 19:07:19,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184474949] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:07:19,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562806058] [2023-12-15 19:07:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:07:19,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:07:19,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:07:19,411 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:07:19,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 19:07:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:07:19,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 2287 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:07:19,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:07:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7274 backedges. 4894 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2023-12-15 19:07:20,073 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:07:20,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562806058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:07:20,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:07:20,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-15 19:07:20,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17240014] [2023-12-15 19:07:20,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:07:20,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:07:20,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:07:20,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:07:20,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:07:20,077 INFO L87 Difference]: Start difference. First operand 14479 states and 14853 transitions. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states 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 19:07:20,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:07:20,776 INFO L93 Difference]: Finished difference Result 29286 states and 30060 transitions. [2023-12-15 19:07:20,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:07:20,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 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 2019 [2023-12-15 19:07:20,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:07:20,789 INFO L225 Difference]: With dead ends: 29286 [2023-12-15 19:07:20,789 INFO L226 Difference]: Without dead ends: 15466 [2023-12-15 19:07:20,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2028 GetRequests, 2020 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-15 19:07:20,797 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 65 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:07:20,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 410 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 19:07:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2023-12-15 19:07:20,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 14808. [2023-12-15 19:07:20,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14808 states, 14807 states have (on average 1.0234348618896467) internal successors, (15154), 14807 states have internal predecessors, (15154), 0 states have call successors, (0), 0 states 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 19:07:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14808 states to 14808 states and 15154 transitions. [2023-12-15 19:07:20,916 INFO L78 Accepts]: Start accepts. Automaton has 14808 states and 15154 transitions. Word has length 2019 [2023-12-15 19:07:20,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:07:20,917 INFO L495 AbstractCegarLoop]: Abstraction has 14808 states and 15154 transitions. [2023-12-15 19:07:20,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states 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 19:07:20,917 INFO L276 IsEmpty]: Start isEmpty. Operand 14808 states and 15154 transitions. [2023-12-15 19:07:20,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2063 [2023-12-15 19:07:20,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:07:20,948 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:20,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 19:07:21,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-15 19:07:21,156 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:07:21,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:07:21,156 INFO L85 PathProgramCache]: Analyzing trace with hash -35498179, now seen corresponding path program 1 times [2023-12-15 19:07:21,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:07:21,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821634137] [2023-12-15 19:07:21,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:07:21,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:07:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-15 19:07:21,581 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 19:07:21,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 19:07:21,636 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Termination requested (timeout or resource limit) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:152) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:869) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:793) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-15 19:07:21,639 INFO L158 Benchmark]: Toolchain (without parser) took 59424.69ms. Allocated memory was 242.2MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 192.7MB in the beginning and 569.2MB in the end (delta: -376.6MB). Peak memory consumption was 830.9MB. Max. memory is 8.0GB. [2023-12-15 19:07:21,639 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:07:21,639 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.66ms. Allocated memory is still 242.2MB. Free memory was 192.7MB in the beginning and 129.7MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. [2023-12-15 19:07:21,639 INFO L158 Benchmark]: Boogie Procedure Inliner took 142.29ms. Allocated memory is still 242.2MB. Free memory was 129.7MB in the beginning and 183.3MB in the end (delta: -53.5MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-15 19:07:21,639 INFO L158 Benchmark]: Boogie Preprocessor took 202.34ms. Allocated memory is still 242.2MB. Free memory was 183.3MB in the beginning and 148.5MB in the end (delta: 34.8MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-15 19:07:21,640 INFO L158 Benchmark]: RCFGBuilder took 1691.89ms. Allocated memory was 242.2MB in the beginning and 345.0MB in the end (delta: 102.8MB). Free memory was 148.5MB in the beginning and 177.0MB in the end (delta: -28.5MB). Peak memory consumption was 84.4MB. Max. memory is 8.0GB. [2023-12-15 19:07:21,640 INFO L158 Benchmark]: TraceAbstraction took 56674.38ms. Allocated memory was 345.0MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 175.9MB in the beginning and 569.2MB in the end (delta: -393.3MB). Peak memory consumption was 710.9MB. Max. memory is 8.0GB. [2023-12-15 19:07:21,641 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 709.66ms. Allocated memory is still 242.2MB. Free memory was 192.7MB in the beginning and 129.7MB in the end (delta: 62.9MB). Peak memory consumption was 62.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 142.29ms. Allocated memory is still 242.2MB. Free memory was 129.7MB in the beginning and 183.3MB in the end (delta: -53.5MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 202.34ms. Allocated memory is still 242.2MB. Free memory was 183.3MB in the beginning and 148.5MB in the end (delta: 34.8MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1691.89ms. Allocated memory was 242.2MB in the beginning and 345.0MB in the end (delta: 102.8MB). Free memory was 148.5MB in the beginning and 177.0MB in the end (delta: -28.5MB). Peak memory consumption was 84.4MB. Max. memory is 8.0GB. * TraceAbstraction took 56674.38ms. Allocated memory was 345.0MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 175.9MB in the beginning and 569.2MB in the end (delta: -393.3MB). Peak memory consumption was 710.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Termination requested (timeout or resource limit) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Termination requested (timeout or resource limit): de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown