/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-industry-pattern/array_range_init.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 17:59:55,334 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 17:59:55,373 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 17:59:55,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 17:59:55,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 17:59:55,390 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 17:59:55,390 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 17:59:55,391 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 17:59:55,391 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 17:59:55,391 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 17:59:55,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 17:59:55,392 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 17:59:55,392 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 17:59:55,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 17:59:55,392 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 17:59:55,393 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 17:59:55,393 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 17:59:55,393 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 17:59:55,393 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 17:59:55,394 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 17:59:55,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 17:59:55,396 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 17:59:55,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 17:59:55,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 17:59:55,397 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 17:59:55,397 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 17:59:55,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 17:59:55,398 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 17:59:55,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 17:59:55,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 17:59:55,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 17:59:55,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 17:59:55,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 17:59:55,399 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 17:59:55,399 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 17:59:55,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 17:59:55,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 17:59:55,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 17:59:55,400 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 17:59:55,400 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 17:59:55,400 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 17:59:55,401 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 17:59:55,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 17:59:55,401 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 17:59:55,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 17:59:55,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 17:59:55,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 17:59:55,602 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 17:59:55,603 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 17:59:55,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_range_init.i [2023-12-18 17:59:56,828 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 17:59:56,987 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 17:59:56,988 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_range_init.i [2023-12-18 17:59:56,992 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/983675cd1/b4582a2b846e4c61890488607c9c012b/FLAG383c762e5 [2023-12-18 17:59:57,003 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/983675cd1/b4582a2b846e4c61890488607c9c012b [2023-12-18 17:59:57,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 17:59:57,008 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 17:59:57,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 17:59:57,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 17:59:57,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 17:59:57,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@257e65de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57, skipping insertion in model container [2023-12-18 17:59:57,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,027 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 17:59:57,120 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_range_init.i[809,822] [2023-12-18 17:59:57,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 17:59:57,135 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 17:59:57,143 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_range_init.i[809,822] [2023-12-18 17:59:57,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 17:59:57,156 INFO L206 MainTranslator]: Completed translation [2023-12-18 17:59:57,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57 WrapperNode [2023-12-18 17:59:57,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 17:59:57,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 17:59:57,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 17:59:57,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 17:59:57,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,177 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2023-12-18 17:59:57,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 17:59:57,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 17:59:57,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 17:59:57,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 17:59:57,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,195 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-12-18 17:59:57,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,196 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,202 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 17:59:57,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 17:59:57,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 17:59:57,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 17:59:57,204 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57" (1/1) ... [2023-12-18 17:59:57,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 17:59:57,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:59:57,229 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) [2023-12-18 17:59:57,238 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 [2023-12-18 17:59:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 17:59:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 17:59:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 17:59:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 17:59:57,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 17:59:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 17:59:57,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 17:59:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 17:59:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 17:59:57,318 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 17:59:57,319 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 17:59:57,407 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 17:59:57,423 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 17:59:57,423 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-18 17:59:57,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:59:57 BoogieIcfgContainer [2023-12-18 17:59:57,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 17:59:57,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 17:59:57,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 17:59:57,429 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 17:59:57,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 05:59:57" (1/3) ... [2023-12-18 17:59:57,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497c6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:59:57, skipping insertion in model container [2023-12-18 17:59:57,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:59:57" (2/3) ... [2023-12-18 17:59:57,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@497c6b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:59:57, skipping insertion in model container [2023-12-18 17:59:57,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:59:57" (3/3) ... [2023-12-18 17:59:57,431 INFO L112 eAbstractionObserver]: Analyzing ICFG array_range_init.i [2023-12-18 17:59:57,443 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 17:59:57,444 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 17:59:57,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 17:59:57,482 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;@2ab9cfe2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 17:59:57,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 17:59:57,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:57,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-18 17:59:57,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:59:57,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-18 17:59:57,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:59:57,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:59:57,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1929175509, now seen corresponding path program 1 times [2023-12-18 17:59:57,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:59:57,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554003585] [2023-12-18 17:59:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:59:57,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:59:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:59:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:59:57,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:59:57,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554003585] [2023-12-18 17:59:57,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554003585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 17:59:57,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 17:59:57,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 17:59:57,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139012714] [2023-12-18 17:59:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 17:59:57,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 17:59:57,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:59:57,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 17:59:57,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 17:59:57,629 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:57,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:59:57,642 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2023-12-18 17:59:57,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 17:59:57,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-18 17:59:57,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:59:57,648 INFO L225 Difference]: With dead ends: 20 [2023-12-18 17:59:57,649 INFO L226 Difference]: Without dead ends: 10 [2023-12-18 17:59:57,650 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 [2023-12-18 17:59:57,653 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:59:57,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:59:57,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-18 17:59:57,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-18 17:59:57,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-12-18 17:59:57,673 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2023-12-18 17:59:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:59:57,673 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-12-18 17:59:57,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-12-18 17:59:57,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-18 17:59:57,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:59:57,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-18 17:59:57,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 17:59:57,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:59:57,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:59:57,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1939334240, now seen corresponding path program 1 times [2023-12-18 17:59:57,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:59:57,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038944863] [2023-12-18 17:59:57,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:59:57,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:59:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:59:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:59:57,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:59:57,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038944863] [2023-12-18 17:59:57,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038944863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 17:59:57,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 17:59:57,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 17:59:57,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485471734] [2023-12-18 17:59:57,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 17:59:57,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 17:59:57,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:59:57,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 17:59:57,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 17:59:57,744 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:57,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:59:57,763 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2023-12-18 17:59:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 17:59:57,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-18 17:59:57,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:59:57,764 INFO L225 Difference]: With dead ends: 27 [2023-12-18 17:59:57,764 INFO L226 Difference]: Without dead ends: 18 [2023-12-18 17:59:57,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 17:59:57,765 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:59:57,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 9 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:59:57,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-12-18 17:59:57,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2023-12-18 17:59:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-12-18 17:59:57,768 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2023-12-18 17:59:57,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:59:57,768 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-12-18 17:59:57,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:57,769 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-18 17:59:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-18 17:59:57,769 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:59:57,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:59:57,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-18 17:59:57,769 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:59:57,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:59:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1508207766, now seen corresponding path program 1 times [2023-12-18 17:59:57,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:59:57,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727015846] [2023-12-18 17:59:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:59:57,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:59:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:59:57,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:59:57,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:59:57,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727015846] [2023-12-18 17:59:57,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727015846] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:59:57,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910048234] [2023-12-18 17:59:57,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:59:57,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:59:57,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:59:57,836 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) [2023-12-18 17:59:57,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 17:59:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:59:57,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 17:59:57,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:59:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:59:57,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:59:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:59:57,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910048234] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:59:57,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:59:57,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-18 17:59:57,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970624513] [2023-12-18 17:59:57,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:59:57,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-18 17:59:57,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:59:57,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-18 17:59:57,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-18 17:59:57,975 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:58,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:59:58,034 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2023-12-18 17:59:58,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 17:59:58,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 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 9 [2023-12-18 17:59:58,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:59:58,035 INFO L225 Difference]: With dead ends: 43 [2023-12-18 17:59:58,035 INFO L226 Difference]: Without dead ends: 37 [2023-12-18 17:59:58,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-18 17:59:58,037 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 36 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 17:59:58,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 14 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 17:59:58,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-18 17:59:58,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 20. [2023-12-18 17:59:58,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-12-18 17:59:58,040 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 9 [2023-12-18 17:59:58,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:59:58,040 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-12-18 17:59:58,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:58,041 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-12-18 17:59:58,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-18 17:59:58,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:59:58,041 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:59:58,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-18 17:59:58,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:59:58,242 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:59:58,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:59:58,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1383074466, now seen corresponding path program 1 times [2023-12-18 17:59:58,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:59:58,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805069732] [2023-12-18 17:59:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:59:58,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:59:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:59:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:59:58,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:59:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805069732] [2023-12-18 17:59:58,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805069732] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:59:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902516430] [2023-12-18 17:59:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:59:58,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:59:58,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:59:58,401 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) [2023-12-18 17:59:58,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 17:59:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:59:58,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-18 17:59:58,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:59:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:59:58,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:59:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:59:58,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902516430] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:59:58,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:59:58,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-12-18 17:59:58,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491855538] [2023-12-18 17:59:58,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:59:58,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-18 17:59:58,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:59:58,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-18 17:59:58,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-18 17:59:58,522 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:58,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:59:58,601 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions. [2023-12-18 17:59:58,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-18 17:59:58,601 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 18 [2023-12-18 17:59:58,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:59:58,603 INFO L225 Difference]: With dead ends: 101 [2023-12-18 17:59:58,603 INFO L226 Difference]: Without dead ends: 95 [2023-12-18 17:59:58,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-18 17:59:58,604 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 124 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 17:59:58,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 32 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 17:59:58,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-12-18 17:59:58,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 38. [2023-12-18 17:59:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2023-12-18 17:59:58,611 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 18 [2023-12-18 17:59:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:59:58,611 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2023-12-18 17:59:58,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2023-12-18 17:59:58,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-18 17:59:58,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:59:58,612 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 4, 1, 1, 1, 1, 1, 1] [2023-12-18 17:59:58,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-18 17:59:58,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-18 17:59:58,837 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:59:58,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:59:58,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1341948512, now seen corresponding path program 2 times [2023-12-18 17:59:58,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:59:58,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557133134] [2023-12-18 17:59:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:59:58,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:59:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:59:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:59:59,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:59:59,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557133134] [2023-12-18 17:59:59,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557133134] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:59:59,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487975839] [2023-12-18 17:59:59,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 17:59:59,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:59:59,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:59:59,129 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) [2023-12-18 17:59:59,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 17:59:59,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 17:59:59,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:59:59,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-18 17:59:59,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:59:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:59:59,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:59:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:59:59,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487975839] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:59:59,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:59:59,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-12-18 17:59:59,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860206714] [2023-12-18 17:59:59,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:59:59,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-18 17:59:59,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:59:59,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-18 17:59:59,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-18 17:59:59,435 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 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) [2023-12-18 17:59:59,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:59:59,630 INFO L93 Difference]: Finished difference Result 224 states and 265 transitions. [2023-12-18 17:59:59,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-18 17:59:59,630 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 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) Word has length 36 [2023-12-18 17:59:59,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:59:59,634 INFO L225 Difference]: With dead ends: 224 [2023-12-18 17:59:59,635 INFO L226 Difference]: Without dead ends: 218 [2023-12-18 17:59:59,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-18 17:59:59,638 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 225 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 17:59:59,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 71 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 17:59:59,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-18 17:59:59,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 74. [2023-12-18 17:59:59,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 73 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:59:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 96 transitions. [2023-12-18 17:59:59,654 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 96 transitions. Word has length 36 [2023-12-18 17:59:59,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:59:59,654 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 96 transitions. [2023-12-18 17:59:59,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 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) [2023-12-18 17:59:59,654 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 96 transitions. [2023-12-18 17:59:59,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-18 17:59:59,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:59:59,656 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 12, 10, 1, 1, 1, 1, 1, 1] [2023-12-18 17:59:59,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 17:59:59,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:59:59,862 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:59:59,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:59:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash -18414048, now seen corresponding path program 3 times [2023-12-18 17:59:59,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:59:59,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705886884] [2023-12-18 17:59:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:59:59,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:59:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:00:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:00:00,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:00:00,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705886884] [2023-12-18 18:00:00,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705886884] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:00:00,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292248784] [2023-12-18 18:00:00,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 18:00:00,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:00:00,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:00:00,389 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) [2023-12-18 18:00:00,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 18:00:00,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2023-12-18 18:00:00,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:00:00,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-18 18:00:00,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:00:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 373 proven. 155 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-12-18 18:00:00,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:00:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 373 proven. 155 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-12-18 18:00:01,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292248784] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:00:01,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:00:01,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 14, 14] total 49 [2023-12-18 18:00:01,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012611774] [2023-12-18 18:00:01,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:00:01,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-18 18:00:01,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:00:01,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-18 18:00:01,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 18:00:01,326 INFO L87 Difference]: Start difference. First operand 74 states and 96 transitions. Second operand has 49 states, 49 states have (on average 2.8979591836734695) internal successors, (142), 49 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:00:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:00:01,727 INFO L93 Difference]: Finished difference Result 478 states and 569 transitions. [2023-12-18 18:00:01,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-18 18:00:01,728 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.8979591836734695) internal successors, (142), 49 states have internal predecessors, (142), 0 states have call successors, (0), 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 72 [2023-12-18 18:00:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:00:01,729 INFO L225 Difference]: With dead ends: 478 [2023-12-18 18:00:01,729 INFO L226 Difference]: Without dead ends: 472 [2023-12-18 18:00:01,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-12-18 18:00:01,731 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 632 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 18:00:01,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 143 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 18:00:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2023-12-18 18:00:01,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 149. [2023-12-18 18:00:01,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3243243243243243) internal successors, (196), 148 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:00:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 196 transitions. [2023-12-18 18:00:01,742 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 196 transitions. Word has length 72 [2023-12-18 18:00:01,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:00:01,743 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 196 transitions. [2023-12-18 18:00:01,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.8979591836734695) internal successors, (142), 49 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:00:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 196 transitions. [2023-12-18 18:00:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-18 18:00:01,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:00:01,758 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 24, 23, 1, 1, 1, 1, 1, 1] [2023-12-18 18:00:01,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 18:00:01,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:00:01,959 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:00:01,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:00:01,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1487068904, now seen corresponding path program 4 times [2023-12-18 18:00:01,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:00:01,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149974314] [2023-12-18 18:00:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:00:01,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:00:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:00:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:00:03,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:00:03,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149974314] [2023-12-18 18:00:03,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149974314] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:00:03,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320262998] [2023-12-18 18:00:03,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 18:00:03,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:00:03,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:00:03,581 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) [2023-12-18 18:00:03,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 18:00:03,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 18:00:03,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 18:00:03,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-18 18:00:03,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 18:00:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:00:03,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 18:00:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3290 backedges. 0 proven. 3290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:00:06,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320262998] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 18:00:06,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 18:00:06,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 98 [2023-12-18 18:00:06,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142599773] [2023-12-18 18:00:06,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 18:00:06,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-18 18:00:06,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:00:06,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-18 18:00:06,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-18 18:00:06,034 INFO L87 Difference]: Start difference. First operand 149 states and 196 transitions. Second operand has 99 states, 99 states have (on average 2.9696969696969697) internal successors, (294), 98 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:00:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 18:00:08,463 INFO L93 Difference]: Finished difference Result 1046 states and 1256 transitions. [2023-12-18 18:00:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-12-18 18:00:08,463 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.9696969696969697) internal successors, (294), 98 states have internal predecessors, (294), 0 states have call successors, (0), 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 147 [2023-12-18 18:00:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 18:00:08,466 INFO L225 Difference]: With dead ends: 1046 [2023-12-18 18:00:08,466 INFO L226 Difference]: Without dead ends: 1040 [2023-12-18 18:00:08,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-18 18:00:08,469 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2289 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 861 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2289 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 861 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 18:00:08,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2289 Valid, 293 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [861 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 18:00:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2023-12-18 18:00:08,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 296. [2023-12-18 18:00:08,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.3288135593220338) internal successors, (392), 295 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:00:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 392 transitions. [2023-12-18 18:00:08,490 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 392 transitions. Word has length 147 [2023-12-18 18:00:08,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 18:00:08,490 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 392 transitions. [2023-12-18 18:00:08,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 2.9696969696969697) internal successors, (294), 98 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:00:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 392 transitions. [2023-12-18 18:00:08,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-12-18 18:00:08,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 18:00:08,493 INFO L195 NwaCegarLoop]: trace histogram [96, 96, 49, 47, 1, 1, 1, 1, 1, 1] [2023-12-18 18:00:08,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 18:00:08,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:00:08,700 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 18:00:08,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 18:00:08,700 INFO L85 PathProgramCache]: Analyzing trace with hash 306425058, now seen corresponding path program 5 times [2023-12-18 18:00:08,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 18:00:08,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194056182] [2023-12-18 18:00:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 18:00:08,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 18:00:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 18:00:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 13776 backedges. 0 proven. 13776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 18:00:13,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 18:00:13,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194056182] [2023-12-18 18:00:13,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194056182] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 18:00:13,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329285085] [2023-12-18 18:00:13,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 18:00:13,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 18:00:13,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 18:00:13,940 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 18:00:13,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Received shutdown request... [2023-12-18 18:14:41,051 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 18:14:41,060 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 [2023-12-18 18:14:42,067 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 0 [2023-12-18 18:14:42,251 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2023-12-18 18:14:42,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2023-12-18 18:14:42,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 18:14:42,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-18 18:14:42,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2023-12-18 18:14:42,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361652587] [2023-12-18 18:14:42,272 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-18 18:14:42,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-18 18:14:42,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 18:14:42,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-18 18:14:42,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-18 18:14:42,279 INFO L87 Difference]: Start difference. First operand 296 states and 392 transitions. Second operand has 99 states, 99 states have (on average 2.9696969696969697) internal successors, (294), 98 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 18:14:42,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 18:14:42,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-18 18:14:42,284 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 18:14:42,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 18:14:42,285 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-18 18:14:42,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-18 18:14:42,286 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (296states) and FLOYD_HOARE automaton (currently 2 states, 99 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-18 18:14:42,293 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2023-12-18 18:14:42,295 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 18:14:42,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 06:14:42 BoogieIcfgContainer [2023-12-18 18:14:42,298 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 18:14:42,298 INFO L158 Benchmark]: Toolchain (without parser) took 885290.37ms. Allocated memory was 239.1MB in the beginning and 659.6MB in the end (delta: 420.5MB). Free memory was 191.6MB in the beginning and 462.5MB in the end (delta: -271.0MB). Peak memory consumption was 151.0MB. Max. memory is 8.0GB. [2023-12-18 18:14:42,298 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 175.1MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 18:14:42,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 147.90ms. Allocated memory is still 239.1MB. Free memory was 191.2MB in the beginning and 180.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-18 18:14:42,298 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.87ms. Allocated memory is still 239.1MB. Free memory was 180.4MB in the beginning and 179.1MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-18 18:14:42,299 INFO L158 Benchmark]: Boogie Preprocessor took 24.55ms. Allocated memory is still 239.1MB. Free memory was 179.1MB in the beginning and 177.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 18:14:42,299 INFO L158 Benchmark]: RCFGBuilder took 220.48ms. Allocated memory is still 239.1MB. Free memory was 177.3MB in the beginning and 166.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-18 18:14:42,299 INFO L158 Benchmark]: TraceAbstraction took 884872.09ms. Allocated memory was 239.1MB in the beginning and 659.6MB in the end (delta: 420.5MB). Free memory was 165.8MB in the beginning and 462.5MB in the end (delta: -296.7MB). Peak memory consumption was 124.8MB. Max. memory is 8.0GB. [2023-12-18 18:14:42,301 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 175.1MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 147.90ms. Allocated memory is still 239.1MB. Free memory was 191.2MB in the beginning and 180.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.87ms. Allocated memory is still 239.1MB. Free memory was 180.4MB in the beginning and 179.1MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.55ms. Allocated memory is still 239.1MB. Free memory was 179.1MB in the beginning and 177.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 220.48ms. Allocated memory is still 239.1MB. Free memory was 177.3MB in the beginning and 166.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 884872.09ms. Allocated memory was 239.1MB in the beginning and 659.6MB in the end (delta: 420.5MB). Free memory was 165.8MB in the beginning and 462.5MB in the end (delta: -296.7MB). Peak memory consumption was 124.8MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (296states) and FLOYD_HOARE automaton (currently 2 states, 99 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 884.8s, OverallIterations: 8, TraceHistogramMax: 96, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3312 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3312 mSDsluCounter, 573 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 531 mSDsCounter, 1213 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 975 IncrementalHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1213 mSolverCounterUnsat, 42 mSDtfsCounter, 975 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 750 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=296occurred in iteration=7, InterpolantAutomatonStates: 198, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 1291 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 870 NumberOfCodeBlocks, 852 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1134 ConstructedInterpolants, 0 QuantifiedInterpolants, 3116 SizeOfPredicates, 0 NumberOfNonLiveVariables, 874 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 1120/26295 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