/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loops-crafted-1/Mono5_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:51:16,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:51:16,283 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:51:16,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:51:16,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:51:16,316 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:51:16,317 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:51:16,317 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:51:16,317 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:51:16,320 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:51:16,320 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:51:16,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:51:16,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:51:16,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:51:16,322 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:51:16,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:51:16,322 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:51:16,323 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:51:16,323 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:51:16,323 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:51:16,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:51:16,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:51:16,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:51:16,324 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:51:16,324 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:51:16,324 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:51:16,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:51:16,324 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:51:16,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:51:16,325 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:51:16,325 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:51:16,325 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:51:16,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:51:16,326 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:51:16,326 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:51:16,326 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:51:16,326 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:51:16,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:51:16,326 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:51:16,326 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:51:16,326 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:51:16,327 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:51:16,327 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:51:16,327 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:51:16,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:51:16,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:51:16,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:51:16,550 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:51:16,550 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:51:16,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/Mono5_1.c [2023-12-16 04:51:17,570 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:51:17,730 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:51:17,731 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono5_1.c [2023-12-16 04:51:17,736 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c11aa5ae/7271d54d3f6646baaf4ad74d92ef46f2/FLAG131ba2085 [2023-12-16 04:51:17,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c11aa5ae/7271d54d3f6646baaf4ad74d92ef46f2 [2023-12-16 04:51:17,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:51:17,757 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:51:17,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:51:17,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:51:17,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:51:17,763 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cdd780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17, skipping insertion in model container [2023-12-16 04:51:17,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,778 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:51:17,890 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono5_1.c[311,324] [2023-12-16 04:51:17,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:51:17,912 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:51:17,921 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono5_1.c[311,324] [2023-12-16 04:51:17,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:51:17,935 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:51:17,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17 WrapperNode [2023-12-16 04:51:17,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:51:17,937 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:51:17,937 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:51:17,937 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:51:17,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,959 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2023-12-16 04:51:17,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:51:17,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:51:17,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:51:17,961 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:51:17,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,969 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,975 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 04:51:17,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,979 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,980 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,980 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:51:17,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:51:17,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:51:17,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:51:17,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (1/1) ... [2023-12-16 04:51:17,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:51:17,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:18,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 04:51:18,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 04:51:18,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:51:18,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:51:18,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:51:18,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:51:18,065 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:51:18,066 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:51:18,141 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:51:18,155 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:51:18,155 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:51:18,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:51:18 BoogieIcfgContainer [2023-12-16 04:51:18,156 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:51:18,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:51:18,157 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:51:18,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:51:18,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:51:17" (1/3) ... [2023-12-16 04:51:18,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7471b004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:51:18, skipping insertion in model container [2023-12-16 04:51:18,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:51:17" (2/3) ... [2023-12-16 04:51:18,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7471b004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:51:18, skipping insertion in model container [2023-12-16 04:51:18,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:51:18" (3/3) ... [2023-12-16 04:51:18,162 INFO L112 eAbstractionObserver]: Analyzing ICFG Mono5_1.c [2023-12-16 04:51:18,176 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:51:18,176 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:51:18,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:51:18,208 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;@1ff0a892, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:51:18,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:51:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-16 04:51:18,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:18,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-16 04:51:18,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:18,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash 63417192, now seen corresponding path program 1 times [2023-12-16 04:51:18,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:18,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064606457] [2023-12-16 04:51:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:18,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:18,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064606457] [2023-12-16 04:51:18,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064606457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:51:18,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:51:18,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:51:18,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114003576] [2023-12-16 04:51:18,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:51:18,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:51:18,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:51:18,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:51:18,340 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:18,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:18,354 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2023-12-16 04:51:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:51:18,355 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-12-16 04:51:18,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:18,360 INFO L225 Difference]: With dead ends: 16 [2023-12-16 04:51:18,360 INFO L226 Difference]: Without dead ends: 8 [2023-12-16 04:51:18,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:51:18,364 INFO L413 NwaCegarLoop]: 9 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, 9 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 [2023-12-16 04:51:18,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:51:18,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-12-16 04:51:18,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-12-16 04:51:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:18,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2023-12-16 04:51:18,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2023-12-16 04:51:18,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:18,384 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-12-16 04:51:18,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:18,384 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-12-16 04:51:18,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-16 04:51:18,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:18,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-16 04:51:18,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:51:18,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:18,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:18,385 INFO L85 PathProgramCache]: Analyzing trace with hash 63089491, now seen corresponding path program 1 times [2023-12-16 04:51:18,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:18,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96655771] [2023-12-16 04:51:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:18,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:18,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:18,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96655771] [2023-12-16 04:51:18,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96655771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:51:18,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:51:18,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:51:18,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455918858] [2023-12-16 04:51:18,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:51:18,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:51:18,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:18,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:51:18,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 04:51:18,549 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:18,579 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-12-16 04:51:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:51:18,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-12-16 04:51:18,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:18,580 INFO L225 Difference]: With dead ends: 15 [2023-12-16 04:51:18,588 INFO L226 Difference]: Without dead ends: 11 [2023-12-16 04:51:18,588 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 [2023-12-16 04:51:18,589 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:18,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 17 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:51:18,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-16 04:51:18,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-16 04:51:18,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:18,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-16 04:51:18,593 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 5 [2023-12-16 04:51:18,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:18,593 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-16 04:51:18,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:18,593 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-16 04:51:18,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 04:51:18,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:18,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:51:18,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 04:51:18,594 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:18,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash -157654054, now seen corresponding path program 1 times [2023-12-16 04:51:18,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:18,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438887273] [2023-12-16 04:51:18,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:18,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:18,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:18,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438887273] [2023-12-16 04:51:18,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438887273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:51:18,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:51:18,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:51:18,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106722286] [2023-12-16 04:51:18,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:51:18,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:51:18,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:18,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:51:18,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:51:18,684 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:18,706 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2023-12-16 04:51:18,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:51:18,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-16 04:51:18,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:18,708 INFO L225 Difference]: With dead ends: 21 [2023-12-16 04:51:18,708 INFO L226 Difference]: Without dead ends: 14 [2023-12-16 04:51:18,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:51:18,712 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:18,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:51:18,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-16 04:51:18,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-12-16 04:51:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:18,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-12-16 04:51:18,715 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2023-12-16 04:51:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:18,715 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-12-16 04:51:18,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-12-16 04:51:18,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-16 04:51:18,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:18,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:51:18,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 04:51:18,716 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:18,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash -53614603, now seen corresponding path program 1 times [2023-12-16 04:51:18,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:18,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834989237] [2023-12-16 04:51:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:18,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:18,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:18,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834989237] [2023-12-16 04:51:18,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834989237] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:51:18,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261017342] [2023-12-16 04:51:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:18,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:18,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:18,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:51:18,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:51:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:18,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 04:51:18,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:51:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 04:51:19,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:51:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 04:51:19,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261017342] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:51:19,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:51:19,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2023-12-16 04:51:19,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837513505] [2023-12-16 04:51:19,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:51:19,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:51:19,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:19,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:51:19,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:51:19,080 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:19,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:19,182 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-12-16 04:51:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:51:19,182 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-16 04:51:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:19,184 INFO L225 Difference]: With dead ends: 39 [2023-12-16 04:51:19,184 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 04:51:19,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-12-16 04:51:19,192 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:19,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 37 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:51:19,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 04:51:19,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2023-12-16 04:51:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:19,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-12-16 04:51:19,202 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 11 [2023-12-16 04:51:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:19,203 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-12-16 04:51:19,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-12-16 04:51:19,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 04:51:19,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:19,203 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 2, 1, 1, 1, 1, 1] [2023-12-16 04:51:19,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 04:51:19,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:19,415 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:19,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:19,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1124929139, now seen corresponding path program 2 times [2023-12-16 04:51:19,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:19,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562479069] [2023-12-16 04:51:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:19,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 04:51:19,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:19,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562479069] [2023-12-16 04:51:19,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562479069] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:51:19,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953336438] [2023-12-16 04:51:19,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:51:19,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:19,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:19,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:51:19,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:51:19,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:51:19,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:51:19,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 04:51:19,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:51:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 04:51:19,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:51:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 04:51:19,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953336438] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:51:19,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:51:19,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 16 [2023-12-16 04:51:19,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551038968] [2023-12-16 04:51:19,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:51:19,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 04:51:19,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:19,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 04:51:19,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-12-16 04:51:19,774 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:20,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:20,173 INFO L93 Difference]: Finished difference Result 75 states and 97 transitions. [2023-12-16 04:51:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 04:51:20,173 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-16 04:51:20,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:20,174 INFO L225 Difference]: With dead ends: 75 [2023-12-16 04:51:20,174 INFO L226 Difference]: Without dead ends: 47 [2023-12-16 04:51:20,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2023-12-16 04:51:20,175 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 64 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:20,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 114 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:51:20,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-16 04:51:20,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-12-16 04:51:20,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2023-12-16 04:51:20,184 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 23 [2023-12-16 04:51:20,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:20,185 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2023-12-16 04:51:20,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:20,185 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2023-12-16 04:51:20,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 04:51:20,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:20,187 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 10, 3, 1, 1, 1, 1, 1] [2023-12-16 04:51:20,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:51:20,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:20,391 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:20,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:20,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1706957416, now seen corresponding path program 3 times [2023-12-16 04:51:20,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:20,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249877979] [2023-12-16 04:51:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:20,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 106 proven. 15 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-16 04:51:20,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:20,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249877979] [2023-12-16 04:51:20,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249877979] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:51:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6920685] [2023-12-16 04:51:20,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:51:20,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:20,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:20,565 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:51:20,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:51:20,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-16 04:51:20,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:51:20,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 04:51:20,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:51:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 106 proven. 15 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-16 04:51:20,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:51:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 106 proven. 15 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-16 04:51:20,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6920685] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:51:20,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:51:20,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-16 04:51:20,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208961890] [2023-12-16 04:51:20,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:51:20,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 04:51:20,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:20,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 04:51:20,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:51:20,744 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:20,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:20,909 INFO L93 Difference]: Finished difference Result 105 states and 131 transitions. [2023-12-16 04:51:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 04:51:20,910 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-16 04:51:20,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:20,910 INFO L225 Difference]: With dead ends: 105 [2023-12-16 04:51:20,910 INFO L226 Difference]: Without dead ends: 71 [2023-12-16 04:51:20,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:51:20,911 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:20,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:51:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-16 04:51:20,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2023-12-16 04:51:20,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2) internal successors, (72), 60 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2023-12-16 04:51:20,918 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 44 [2023-12-16 04:51:20,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:20,918 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2023-12-16 04:51:20,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:20,918 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2023-12-16 04:51:20,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 04:51:20,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:20,919 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 10, 8, 1, 1, 1, 1, 1] [2023-12-16 04:51:20,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:51:21,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:21,120 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:21,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:21,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2002910195, now seen corresponding path program 4 times [2023-12-16 04:51:21,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:21,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867920652] [2023-12-16 04:51:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:21,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:21,326 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 251 proven. 100 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-16 04:51:21,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:21,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867920652] [2023-12-16 04:51:21,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867920652] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:51:21,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654513185] [2023-12-16 04:51:21,328 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 04:51:21,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:21,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:21,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:51:21,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:51:21,379 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 04:51:21,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:51:21,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 04:51:21,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:51:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 377 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-16 04:51:21,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:51:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 377 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-16 04:51:22,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654513185] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:51:22,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:51:22,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 34 [2023-12-16 04:51:22,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614878861] [2023-12-16 04:51:22,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:51:22,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-16 04:51:22,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:22,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-16 04:51:22,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 04:51:22,028 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 35 states, 35 states have (on average 3.0285714285714285) internal successors, (106), 34 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:38,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:38,165 INFO L93 Difference]: Finished difference Result 159 states and 205 transitions. [2023-12-16 04:51:38,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-16 04:51:38,166 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.0285714285714285) internal successors, (106), 34 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-16 04:51:38,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:38,166 INFO L225 Difference]: With dead ends: 159 [2023-12-16 04:51:38,167 INFO L226 Difference]: Without dead ends: 101 [2023-12-16 04:51:38,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=935, Invalid=3355, Unknown=0, NotChecked=0, Total=4290 [2023-12-16 04:51:38,169 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 257 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:38,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 492 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 04:51:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-16 04:51:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2023-12-16 04:51:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2424242424242424) internal successors, (123), 99 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2023-12-16 04:51:38,180 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 59 [2023-12-16 04:51:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:38,180 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2023-12-16 04:51:38,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.0285714285714285) internal successors, (106), 34 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:38,180 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2023-12-16 04:51:38,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-16 04:51:38,182 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:38,182 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 22, 9, 1, 1, 1, 1, 1] [2023-12-16 04:51:38,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:51:38,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:38,391 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:38,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1425424072, now seen corresponding path program 5 times [2023-12-16 04:51:38,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:38,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606025716] [2023-12-16 04:51:38,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:38,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:38,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 628 proven. 126 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2023-12-16 04:51:38,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:38,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606025716] [2023-12-16 04:51:38,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606025716] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:51:38,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582156343] [2023-12-16 04:51:38,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 04:51:38,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:38,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:38,701 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:51:38,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:51:46,879 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2023-12-16 04:51:46,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:51:46,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-16 04:51:46,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:51:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1300 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-16 04:51:47,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:51:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1300 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-16 04:51:48,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582156343] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:51:48,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:51:48,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 25, 25] total 59 [2023-12-16 04:51:48,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141396210] [2023-12-16 04:51:48,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:51:48,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-16 04:51:48,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:48,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-16 04:51:48,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=656, Invalid=2884, Unknown=0, NotChecked=0, Total=3540 [2023-12-16 04:51:48,433 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 60 states, 60 states have (on average 3.0166666666666666) internal successors, (181), 59 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 04:52:35,271 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:52:35,286 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:52:36,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:52:36,471 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 04:52:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-16 04:52:36,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-16 04:52:36,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=972, Invalid=3998, Unknown=0, NotChecked=0, Total=4970 [2023-12-16 04:52:36,478 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 234 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 1840 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 04:52:36,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1608 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1840 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 04:52:36,479 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:52:36,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 04:52:36,479 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (100states) and FLOYD_HOARE automaton (currently 36 states, 60 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-16 04:52:36,482 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2023-12-16 04:52:36,484 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:52:36,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:52:36 BoogieIcfgContainer [2023-12-16 04:52:36,485 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:52:36,486 INFO L158 Benchmark]: Toolchain (without parser) took 78728.55ms. Allocated memory was 268.4MB in the beginning and 323.0MB in the end (delta: 54.5MB). Free memory was 214.9MB in the beginning and 103.2MB in the end (delta: 111.7MB). Peak memory consumption was 167.8MB. Max. memory is 8.0GB. [2023-12-16 04:52:36,486 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 210.8MB. Free memory is still 159.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:52:36,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.49ms. Allocated memory is still 268.4MB. Free memory was 214.9MB in the beginning and 204.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 04:52:36,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.79ms. Allocated memory is still 268.4MB. Free memory was 204.4MB in the beginning and 202.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 04:52:36,486 INFO L158 Benchmark]: Boogie Preprocessor took 20.03ms. Allocated memory is still 268.4MB. Free memory was 202.9MB in the beginning and 201.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 04:52:36,486 INFO L158 Benchmark]: RCFGBuilder took 174.37ms. Allocated memory is still 268.4MB. Free memory was 201.4MB in the beginning and 191.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 04:52:36,486 INFO L158 Benchmark]: TraceAbstraction took 78327.85ms. Allocated memory was 268.4MB in the beginning and 323.0MB in the end (delta: 54.5MB). Free memory was 190.8MB in the beginning and 103.2MB in the end (delta: 87.5MB). Peak memory consumption was 143.6MB. Max. memory is 8.0GB. [2023-12-16 04:52:36,487 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 210.8MB. Free memory is still 159.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 176.49ms. Allocated memory is still 268.4MB. Free memory was 214.9MB in the beginning and 204.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.79ms. Allocated memory is still 268.4MB. Free memory was 204.4MB in the beginning and 202.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.03ms. Allocated memory is still 268.4MB. Free memory was 202.9MB in the beginning and 201.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 174.37ms. Allocated memory is still 268.4MB. Free memory was 201.4MB in the beginning and 191.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 78327.85ms. Allocated memory was 268.4MB in the beginning and 323.0MB in the end (delta: 54.5MB). Free memory was 190.8MB in the beginning and 103.2MB in the end (delta: 87.5MB). Peak memory consumption was 143.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 4]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 4). Cancelled while NwaCegarLoop was constructing difference of abstraction (100states) and FLOYD_HOARE automaton (currently 36 states, 60 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 78.3s, OverallIterations: 8, TraceHistogramMax: 31, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 65.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 581 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 581 mSDsluCounter, 2308 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2162 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3138 IncrementalHoareTripleChecker+Invalid, 3162 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 146 mSDtfsCounter, 3138 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 578 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 18.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=7, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 8.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 488 NumberOfCodeBlocks, 482 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 705 ConstructedInterpolants, 0 QuantifiedInterpolants, 2637 SizeOfPredicates, 45 NumberOfNonLiveVariables, 627 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 2891/6619 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown