/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-examples/sorting_selectionsort_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 16:55:06,354 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 16:55:06,425 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 16:55:06,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 16:55:06,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 16:55:06,453 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 16:55:06,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 16:55:06,454 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 16:55:06,454 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 16:55:06,457 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 16:55:06,457 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 16:55:06,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 16:55:06,458 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 16:55:06,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 16:55:06,459 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 16:55:06,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 16:55:06,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 16:55:06,460 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 16:55:06,460 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 16:55:06,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 16:55:06,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 16:55:06,461 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 16:55:06,461 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 16:55:06,461 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 16:55:06,461 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 16:55:06,462 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 16:55:06,462 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 16:55:06,462 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 16:55:06,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 16:55:06,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 16:55:06,463 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 16:55:06,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 16:55:06,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 16:55:06,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 16:55:06,464 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 16:55:06,464 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 16:55:06,464 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 16:55:06,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 16:55:06,464 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 16:55:06,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 16:55:06,465 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 16:55:06,465 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 16:55:06,465 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 16:55:06,465 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 16:55:06,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 16:55:06,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 16:55:06,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 16:55:06,711 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 16:55:06,711 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 16:55:06,712 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-2.i [2023-12-15 16:55:07,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 16:55:07,952 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 16:55:07,953 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-2.i [2023-12-15 16:55:07,958 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e21842b5/9be50cef2ef74b8c9b6fd473b283bfa5/FLAG184f49db1 [2023-12-15 16:55:07,967 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e21842b5/9be50cef2ef74b8c9b6fd473b283bfa5 [2023-12-15 16:55:07,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 16:55:07,969 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 16:55:07,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 16:55:07,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 16:55:07,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 16:55:07,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:55:07" (1/1) ... [2023-12-15 16:55:07,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f888fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:07, skipping insertion in model container [2023-12-15 16:55:07,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:55:07" (1/1) ... [2023-12-15 16:55:07,993 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 16:55:08,081 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-examples/sorting_selectionsort_ground-2.i[823,836] [2023-12-15 16:55:08,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 16:55:08,100 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 16:55:08,108 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-examples/sorting_selectionsort_ground-2.i[823,836] [2023-12-15 16:55:08,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 16:55:08,128 INFO L206 MainTranslator]: Completed translation [2023-12-15 16:55:08,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08 WrapperNode [2023-12-15 16:55:08,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 16:55:08,130 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 16:55:08,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 16:55:08,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 16:55:08,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08" (1/1) ... [2023-12-15 16:55:08,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08" (1/1) ... [2023-12-15 16:55:08,153 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 117 [2023-12-15 16:55:08,153 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 16:55:08,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 16:55:08,154 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 16:55:08,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 16:55:08,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08" (1/1) ... [2023-12-15 16:55:08,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08" (1/1) ... [2023-12-15 16:55:08,163 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08" (1/1) ... [2023-12-15 16:55:08,171 INFO L175 MemorySlicer]: Split 15 memory accesses to 2 slices as follows [2, 13]. 87 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]. [2023-12-15 16:55:08,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08" (1/1) ... [2023-12-15 16:55:08,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08" (1/1) ... [2023-12-15 16:55:08,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08" (1/1) ... [2023-12-15 16:55:08,187 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08" (1/1) ... [2023-12-15 16:55:08,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08" (1/1) ... [2023-12-15 16:55:08,189 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08" (1/1) ... [2023-12-15 16:55:08,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 16:55:08,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 16:55:08,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 16:55:08,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 16:55:08,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08" (1/1) ... [2023-12-15 16:55:08,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 16:55:08,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:08,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 16:55:08,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 16:55:08,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 16:55:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 16:55:08,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-15 16:55:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-15 16:55:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-15 16:55:08,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-15 16:55:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 16:55:08,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 16:55:08,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-15 16:55:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-15 16:55:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-15 16:55:08,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-15 16:55:08,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-15 16:55:08,356 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 16:55:08,357 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 16:55:08,517 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 16:55:08,535 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 16:55:08,535 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-15 16:55:08,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:55:08 BoogieIcfgContainer [2023-12-15 16:55:08,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 16:55:08,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 16:55:08,537 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 16:55:08,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 16:55:08,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:55:07" (1/3) ... [2023-12-15 16:55:08,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fcf73fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:55:08, skipping insertion in model container [2023-12-15 16:55:08,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:55:08" (2/3) ... [2023-12-15 16:55:08,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fcf73fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:55:08, skipping insertion in model container [2023-12-15 16:55:08,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:55:08" (3/3) ... [2023-12-15 16:55:08,541 INFO L112 eAbstractionObserver]: Analyzing ICFG sorting_selectionsort_ground-2.i [2023-12-15 16:55:08,553 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 16:55:08,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 16:55:08,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 16:55:08,588 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;@747d01b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 16:55:08,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 16:55:08,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 16:55:08,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-15 16:55:08,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:08,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:08,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:08,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:08,610 INFO L85 PathProgramCache]: Analyzing trace with hash 2038256253, now seen corresponding path program 1 times [2023-12-15 16:55:08,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:08,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532816755] [2023-12-15 16:55:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:08,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 16:55:08,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:08,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532816755] [2023-12-15 16:55:08,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532816755] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 16:55:08,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 16:55:08,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 16:55:08,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038118363] [2023-12-15 16:55:08,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 16:55:08,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 16:55:08,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:08,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 16:55:08,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 16:55:08,795 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 28 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:08,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:08,826 INFO L93 Difference]: Finished difference Result 65 states and 108 transitions. [2023-12-15 16:55:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 16:55:08,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-15 16:55:08,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:08,832 INFO L225 Difference]: With dead ends: 65 [2023-12-15 16:55:08,832 INFO L226 Difference]: Without dead ends: 32 [2023-12-15 16:55:08,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 16:55:08,836 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:08,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:55:08,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-15 16:55:08,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-15 16:55:08,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 16:55:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2023-12-15 16:55:08,862 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 11 [2023-12-15 16:55:08,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:08,863 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2023-12-15 16:55:08,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:08,863 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2023-12-15 16:55:08,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-15 16:55:08,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:08,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:08,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 16:55:08,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:08,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:08,864 INFO L85 PathProgramCache]: Analyzing trace with hash -929420434, now seen corresponding path program 1 times [2023-12-15 16:55:08,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:08,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823126569] [2023-12-15 16:55:08,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:08,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 16:55:08,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:08,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823126569] [2023-12-15 16:55:08,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823126569] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:08,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956084491] [2023-12-15 16:55:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:08,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:08,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:08,924 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:08,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 16:55:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:08,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-15 16:55:08,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 16:55:09,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 16:55:09,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956084491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 16:55:09,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 16:55:09,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 16:55:09,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346930471] [2023-12-15 16:55:09,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 16:55:09,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 16:55:09,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:09,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 16:55:09,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 16:55:09,016 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:09,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:09,069 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2023-12-15 16:55:09,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 16:55:09,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-15 16:55:09,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:09,070 INFO L225 Difference]: With dead ends: 60 [2023-12-15 16:55:09,070 INFO L226 Difference]: Without dead ends: 48 [2023-12-15 16:55:09,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 16:55:09,071 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:09,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 51 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:55:09,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-15 16:55:09,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 33. [2023-12-15 16:55:09,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 16:55:09,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2023-12-15 16:55:09,077 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 12 [2023-12-15 16:55:09,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:09,078 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2023-12-15 16:55:09,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:09,078 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2023-12-15 16:55:09,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-15 16:55:09,078 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:09,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:09,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-15 16:55:09,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:09,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:09,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:09,287 INFO L85 PathProgramCache]: Analyzing trace with hash -891550513, now seen corresponding path program 1 times [2023-12-15 16:55:09,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:09,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943997281] [2023-12-15 16:55:09,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:09,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 16:55:09,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:09,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943997281] [2023-12-15 16:55:09,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943997281] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:09,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662262080] [2023-12-15 16:55:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:09,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:09,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:09,411 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:09,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 16:55:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:09,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 16:55:09,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:09,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 16:55:09,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:55:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 16:55:09,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662262080] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:55:09,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:55:09,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-15 16:55:09,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769788596] [2023-12-15 16:55:09,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:55:09,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 16:55:09,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:09,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 16:55:09,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 16:55:09,523 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:09,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:09,561 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2023-12-15 16:55:09,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 16:55:09,562 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-15 16:55:09,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:09,564 INFO L225 Difference]: With dead ends: 66 [2023-12-15 16:55:09,564 INFO L226 Difference]: Without dead ends: 36 [2023-12-15 16:55:09,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-15 16:55:09,565 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:09,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:55:09,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-15 16:55:09,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-15 16:55:09,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 16:55:09,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2023-12-15 16:55:09,570 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 14 [2023-12-15 16:55:09,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:09,570 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2023-12-15 16:55:09,570 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:09,570 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2023-12-15 16:55:09,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-15 16:55:09,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:09,571 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:09,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 16:55:09,771 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,SelfDestructingSolverStorable2 [2023-12-15 16:55:09,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:09,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:09,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1261296920, now seen corresponding path program 2 times [2023-12-15 16:55:09,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:09,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839111519] [2023-12-15 16:55:09,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:09,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-15 16:55:09,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:09,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839111519] [2023-12-15 16:55:09,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839111519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 16:55:09,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 16:55:09,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 16:55:09,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568688558] [2023-12-15 16:55:09,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 16:55:09,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 16:55:09,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:09,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 16:55:09,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 16:55:09,891 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:09,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:09,961 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2023-12-15 16:55:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 16:55:09,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-15 16:55:09,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:09,964 INFO L225 Difference]: With dead ends: 82 [2023-12-15 16:55:09,964 INFO L226 Difference]: Without dead ends: 54 [2023-12-15 16:55:09,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 16:55:09,967 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:09,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 53 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 16:55:09,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-15 16:55:09,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2023-12-15 16:55:09,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 16:55:09,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2023-12-15 16:55:09,976 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 17 [2023-12-15 16:55:09,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:09,977 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2023-12-15 16:55:09,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:09,977 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2023-12-15 16:55:09,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-15 16:55:09,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:09,977 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:09,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 16:55:09,978 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:09,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:09,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1641264908, now seen corresponding path program 1 times [2023-12-15 16:55:09,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:09,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536474783] [2023-12-15 16:55:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:09,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 16:55:10,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:10,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536474783] [2023-12-15 16:55:10,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536474783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 16:55:10,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 16:55:10,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 16:55:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275880123] [2023-12-15 16:55:10,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 16:55:10,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 16:55:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 16:55:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 16:55:10,073 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:10,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:10,126 INFO L93 Difference]: Finished difference Result 79 states and 108 transitions. [2023-12-15 16:55:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 16:55:10,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-15 16:55:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:10,128 INFO L225 Difference]: With dead ends: 79 [2023-12-15 16:55:10,128 INFO L226 Difference]: Without dead ends: 51 [2023-12-15 16:55:10,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 16:55:10,129 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:10,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 72 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:55:10,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-15 16:55:10,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2023-12-15 16:55:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.325) internal successors, (53), 40 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 16:55:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2023-12-15 16:55:10,136 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 20 [2023-12-15 16:55:10,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:10,136 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2023-12-15 16:55:10,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:10,136 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2023-12-15 16:55:10,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 16:55:10,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:10,137 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:10,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 16:55:10,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:10,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:10,137 INFO L85 PathProgramCache]: Analyzing trace with hash -821471327, now seen corresponding path program 1 times [2023-12-15 16:55:10,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:10,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013443196] [2023-12-15 16:55:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:10,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 16:55:10,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:10,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013443196] [2023-12-15 16:55:10,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013443196] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:10,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329126901] [2023-12-15 16:55:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:10,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:10,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:10,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:10,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 16:55:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:10,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-15 16:55:10,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 16:55:10,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:55:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 16:55:10,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329126901] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:55:10,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:55:10,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-12-15 16:55:10,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695672686] [2023-12-15 16:55:10,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:55:10,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-15 16:55:10,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:10,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-15 16:55:10,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-15 16:55:10,383 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:10,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:10,404 INFO L93 Difference]: Finished difference Result 90 states and 123 transitions. [2023-12-15 16:55:10,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 16:55:10,405 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-15 16:55:10,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:10,405 INFO L225 Difference]: With dead ends: 90 [2023-12-15 16:55:10,405 INFO L226 Difference]: Without dead ends: 51 [2023-12-15 16:55:10,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-15 16:55:10,406 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:10,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:55:10,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-15 16:55:10,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-12-15 16:55:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2826086956521738) internal successors, (59), 46 states have internal predecessors, (59), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-15 16:55:10,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2023-12-15 16:55:10,418 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 21 [2023-12-15 16:55:10,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:10,418 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2023-12-15 16:55:10,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:10,418 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2023-12-15 16:55:10,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-15 16:55:10,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:10,419 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:10,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 16:55:10,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:10,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:10,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash 844164673, now seen corresponding path program 2 times [2023-12-15 16:55:10,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:10,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592697493] [2023-12-15 16:55:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-15 16:55:10,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:10,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592697493] [2023-12-15 16:55:10,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592697493] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:10,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761064480] [2023-12-15 16:55:10,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 16:55:10,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:10,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:10,754 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:10,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 16:55:10,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-15 16:55:10,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:55:10,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 16:55:10,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:10,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-15 16:55:10,972 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-15 16:55:10,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 16:55:10,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761064480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 16:55:10,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 16:55:10,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 18 [2023-12-15 16:55:10,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453485389] [2023-12-15 16:55:10,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 16:55:10,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 16:55:10,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:10,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 16:55:10,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-15 16:55:10,973 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:11,073 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2023-12-15 16:55:11,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 16:55:11,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-15 16:55:11,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:11,074 INFO L225 Difference]: With dead ends: 63 [2023-12-15 16:55:11,074 INFO L226 Difference]: Without dead ends: 61 [2023-12-15 16:55:11,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2023-12-15 16:55:11,075 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 44 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:11,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 122 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 16:55:11,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-15 16:55:11,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2023-12-15 16:55:11,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 50 states have internal predecessors, (62), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-15 16:55:11,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2023-12-15 16:55:11,081 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 27 [2023-12-15 16:55:11,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:11,081 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2023-12-15 16:55:11,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 16:55:11,081 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2023-12-15 16:55:11,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 16:55:11,082 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:11,082 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:11,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 16:55:11,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:11,286 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:11,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:11,287 INFO L85 PathProgramCache]: Analyzing trace with hash 925196036, now seen corresponding path program 1 times [2023-12-15 16:55:11,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:11,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494544072] [2023-12-15 16:55:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:11,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-15 16:55:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:11,426 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 16:55:11,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:11,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494544072] [2023-12-15 16:55:11,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494544072] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:11,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590625835] [2023-12-15 16:55:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:11,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:11,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:11,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:11,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 16:55:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:11,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-15 16:55:11,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 16:55:11,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:55:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 16:55:11,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590625835] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:55:11,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:55:11,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2023-12-15 16:55:11,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171705458] [2023-12-15 16:55:11,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:55:11,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-15 16:55:11,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:11,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-15 16:55:11,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-15 16:55:11,743 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 16:55:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:11,778 INFO L93 Difference]: Finished difference Result 112 states and 151 transitions. [2023-12-15 16:55:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 16:55:11,778 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2023-12-15 16:55:11,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:11,779 INFO L225 Difference]: With dead ends: 112 [2023-12-15 16:55:11,779 INFO L226 Difference]: Without dead ends: 68 [2023-12-15 16:55:11,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-12-15 16:55:11,780 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:11,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:55:11,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-15 16:55:11,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-15 16:55:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 62 states have internal predecessors, (74), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-15 16:55:11,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2023-12-15 16:55:11,786 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 34 [2023-12-15 16:55:11,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:11,786 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2023-12-15 16:55:11,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 16:55:11,786 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2023-12-15 16:55:11,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-15 16:55:11,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:11,787 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:11,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-15 16:55:11,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:11,991 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:11,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:11,992 INFO L85 PathProgramCache]: Analyzing trace with hash -2011549244, now seen corresponding path program 2 times [2023-12-15 16:55:11,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:11,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224352316] [2023-12-15 16:55:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:11,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:12,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-15 16:55:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 16:55:12,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:12,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224352316] [2023-12-15 16:55:12,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224352316] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:12,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009754779] [2023-12-15 16:55:12,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 16:55:12,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:12,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:12,390 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:12,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 16:55:12,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 16:55:12,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:55:12,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-15 16:55:12,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 16:55:12,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:55:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 16:55:13,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009754779] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:55:13,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:55:13,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 25] total 49 [2023-12-15 16:55:13,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858517713] [2023-12-15 16:55:13,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:55:13,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-15 16:55:13,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:13,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-15 16:55:13,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-12-15 16:55:13,143 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 16:55:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:13,197 INFO L93 Difference]: Finished difference Result 136 states and 187 transitions. [2023-12-15 16:55:13,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-15 16:55:13,197 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2023-12-15 16:55:13,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:13,199 INFO L225 Difference]: With dead ends: 136 [2023-12-15 16:55:13,199 INFO L226 Difference]: Without dead ends: 92 [2023-12-15 16:55:13,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-12-15 16:55:13,201 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:13,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 16:55:13,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-15 16:55:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-12-15 16:55:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 86 states have internal predecessors, (98), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-15 16:55:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2023-12-15 16:55:13,217 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 46 [2023-12-15 16:55:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:13,217 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2023-12-15 16:55:13,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 16:55:13,217 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2023-12-15 16:55:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-15 16:55:13,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:13,221 INFO L195 NwaCegarLoop]: trace histogram [46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:13,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 16:55:13,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:13,425 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:13,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:13,426 INFO L85 PathProgramCache]: Analyzing trace with hash -519997628, now seen corresponding path program 3 times [2023-12-15 16:55:13,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:13,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432888087] [2023-12-15 16:55:13,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:13,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:14,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-12-15 16:55:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 2 proven. 1081 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 16:55:14,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432888087] [2023-12-15 16:55:14,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432888087] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575003780] [2023-12-15 16:55:14,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 16:55:14,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:14,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:14,593 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:14,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 16:55:14,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-15 16:55:14,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:55:14,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 16:55:14,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:14,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2023-12-15 16:55:14,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:55:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1083 trivial. 0 not checked. [2023-12-15 16:55:14,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575003780] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:55:14,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:55:14,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 4, 4] total 51 [2023-12-15 16:55:14,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151262376] [2023-12-15 16:55:14,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:55:14,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-15 16:55:14,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:14,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-15 16:55:14,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1180, Invalid=1370, Unknown=0, NotChecked=0, Total=2550 [2023-12-15 16:55:14,783 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 51 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 51 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 16:55:14,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:14,927 INFO L93 Difference]: Finished difference Result 161 states and 201 transitions. [2023-12-15 16:55:14,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-15 16:55:14,927 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 51 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2023-12-15 16:55:14,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:14,928 INFO L225 Difference]: With dead ends: 161 [2023-12-15 16:55:14,928 INFO L226 Difference]: Without dead ends: 117 [2023-12-15 16:55:14,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1184, Invalid=1468, Unknown=0, NotChecked=0, Total=2652 [2023-12-15 16:55:14,930 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 39 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:14,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 238 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 16:55:14,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-15 16:55:14,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2023-12-15 16:55:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 94 states have (on average 1.1808510638297873) internal successors, (111), 95 states have internal predecessors, (111), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-15 16:55:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2023-12-15 16:55:14,942 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 70 [2023-12-15 16:55:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:14,943 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2023-12-15 16:55:14,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 51 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 16:55:14,943 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2023-12-15 16:55:14,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 16:55:14,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:14,946 INFO L195 NwaCegarLoop]: trace histogram [47, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:14,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-15 16:55:15,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:15,151 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:15,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:15,151 INFO L85 PathProgramCache]: Analyzing trace with hash 274341311, now seen corresponding path program 1 times [2023-12-15 16:55:15,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:15,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473188444] [2023-12-15 16:55:15,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:15,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:16,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-15 16:55:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 2 proven. 1128 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 16:55:16,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:16,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473188444] [2023-12-15 16:55:16,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473188444] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:16,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898503808] [2023-12-15 16:55:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:16,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:16,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:16,457 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:16,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 16:55:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:16,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-15 16:55:16,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 16:55:16,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:55:19,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 2 proven. 1128 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 16:55:19,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898503808] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:55:19,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:55:19,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 50] total 99 [2023-12-15 16:55:19,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484736041] [2023-12-15 16:55:19,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:55:19,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2023-12-15 16:55:19,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:19,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2023-12-15 16:55:19,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-15 16:55:19,085 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand has 99 states, 99 states have (on average 1.2121212121212122) internal successors, (120), 99 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 16:55:19,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:19,180 INFO L93 Difference]: Finished difference Result 202 states and 286 transitions. [2023-12-15 16:55:19,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-15 16:55:19,181 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.2121212121212122) internal successors, (120), 99 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 71 [2023-12-15 16:55:19,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:19,181 INFO L225 Difference]: With dead ends: 202 [2023-12-15 16:55:19,181 INFO L226 Difference]: Without dead ends: 150 [2023-12-15 16:55:19,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2023-12-15 16:55:19,184 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:19,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 16:55:19,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-15 16:55:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-12-15 16:55:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 143 states have (on average 1.118881118881119) internal successors, (160), 144 states have internal predecessors, (160), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-15 16:55:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 168 transitions. [2023-12-15 16:55:19,192 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 168 transitions. Word has length 71 [2023-12-15 16:55:19,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:19,192 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 168 transitions. [2023-12-15 16:55:19,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.2121212121212122) internal successors, (120), 99 states have internal predecessors, (120), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 16:55:19,192 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 168 transitions. [2023-12-15 16:55:19,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-15 16:55:19,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:19,193 INFO L195 NwaCegarLoop]: trace histogram [96, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:19,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-15 16:55:19,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-15 16:55:19,398 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:19,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:19,398 INFO L85 PathProgramCache]: Analyzing trace with hash -614969946, now seen corresponding path program 2 times [2023-12-15 16:55:19,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:19,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234350139] [2023-12-15 16:55:19,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:19,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:23,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-15 16:55:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4661 backedges. 2 proven. 4656 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 16:55:23,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:23,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234350139] [2023-12-15 16:55:23,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234350139] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:23,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117602345] [2023-12-15 16:55:23,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 16:55:23,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:23,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:23,958 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:23,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-15 16:55:24,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 16:55:24,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:55:24,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 98 conjunts are in the unsatisfiable core [2023-12-15 16:55:24,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4661 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-15 16:55:24,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:55:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4661 backedges. 2 proven. 4656 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 16:55:31,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117602345] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:55:31,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:55:31,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98, 99] total 197 [2023-12-15 16:55:31,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997257595] [2023-12-15 16:55:31,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:55:31,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2023-12-15 16:55:31,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:31,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2023-12-15 16:55:31,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2023-12-15 16:55:31,364 INFO L87 Difference]: Start difference. First operand 150 states and 168 transitions. Second operand has 197 states, 197 states have (on average 1.1065989847715736) internal successors, (218), 197 states have internal predecessors, (218), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 16:55:31,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:31,632 INFO L93 Difference]: Finished difference Result 300 states and 433 transitions. [2023-12-15 16:55:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2023-12-15 16:55:31,633 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 197 states have (on average 1.1065989847715736) internal successors, (218), 197 states have internal predecessors, (218), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 120 [2023-12-15 16:55:31,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:31,635 INFO L225 Difference]: With dead ends: 300 [2023-12-15 16:55:31,635 INFO L226 Difference]: Without dead ends: 248 [2023-12-15 16:55:31,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=19306, Invalid=19306, Unknown=0, NotChecked=0, Total=38612 [2023-12-15 16:55:31,638 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:31,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 16:55:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-12-15 16:55:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2023-12-15 16:55:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 241 states have (on average 1.070539419087137) internal successors, (258), 242 states have internal predecessors, (258), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-15 16:55:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 266 transitions. [2023-12-15 16:55:31,650 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 266 transitions. Word has length 120 [2023-12-15 16:55:31,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:31,651 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 266 transitions. [2023-12-15 16:55:31,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 197 states have (on average 1.1065989847715736) internal successors, (218), 197 states have internal predecessors, (218), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 16:55:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 266 transitions. [2023-12-15 16:55:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-12-15 16:55:31,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:31,655 INFO L195 NwaCegarLoop]: trace histogram [194, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:31,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-15 16:55:31,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:31,861 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:31,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:31,861 INFO L85 PathProgramCache]: Analyzing trace with hash -546200890, now seen corresponding path program 3 times [2023-12-15 16:55:31,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:31,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950414684] [2023-12-15 16:55:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:31,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:46,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-15 16:55:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:55:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18920 backedges. 2 proven. 18915 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-15 16:55:46,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:55:46,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950414684] [2023-12-15 16:55:46,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950414684] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:55:46,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91859873] [2023-12-15 16:55:46,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-15 16:55:46,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:55:46,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:55:46,258 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:55:46,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-15 16:55:46,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-15 16:55:46,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:55:46,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 16:55:46,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:55:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18920 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18919 trivial. 0 not checked. [2023-12-15 16:55:46,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 16:55:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 18920 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 18917 trivial. 0 not checked. [2023-12-15 16:55:46,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91859873] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 16:55:46,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 16:55:46,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 5, 5] total 203 [2023-12-15 16:55:46,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242620258] [2023-12-15 16:55:46,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 16:55:46,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2023-12-15 16:55:46,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 16:55:46,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2023-12-15 16:55:46,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19325, Invalid=21681, Unknown=0, NotChecked=0, Total=41006 [2023-12-15 16:55:46,849 INFO L87 Difference]: Start difference. First operand 248 states and 266 transitions. Second operand has 203 states, 203 states have (on average 1.1379310344827587) internal successors, (231), 203 states have internal predecessors, (231), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 16:55:59,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 16:55:59,394 INFO L93 Difference]: Finished difference Result 348 states and 412 transitions. [2023-12-15 16:55:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2023-12-15 16:55:59,394 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 1.1379310344827587) internal successors, (231), 203 states have internal predecessors, (231), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 218 [2023-12-15 16:55:59,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 16:55:59,395 INFO L225 Difference]: With dead ends: 348 [2023-12-15 16:55:59,395 INFO L226 Difference]: Without dead ends: 296 [2023-12-15 16:55:59,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21463 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=58179, Invalid=104633, Unknown=0, NotChecked=0, Total=162812 [2023-12-15 16:55:59,404 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 487 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 16:55:59,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 252 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 16:55:59,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-12-15 16:55:59,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 277. [2023-12-15 16:55:59,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 269 states have (on average 1.0892193308550187) internal successors, (293), 270 states have internal predecessors, (293), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-15 16:55:59,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 303 transitions. [2023-12-15 16:55:59,416 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 303 transitions. Word has length 218 [2023-12-15 16:55:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 16:55:59,416 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 303 transitions. [2023-12-15 16:55:59,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 1.1379310344827587) internal successors, (231), 203 states have internal predecessors, (231), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-15 16:55:59,416 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 303 transitions. [2023-12-15 16:55:59,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-12-15 16:55:59,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 16:55:59,418 INFO L195 NwaCegarLoop]: trace histogram [195, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 16:55:59,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-15 16:55:59,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-15 16:55:59,622 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 16:55:59,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 16:55:59,623 INFO L85 PathProgramCache]: Analyzing trace with hash -21559199, now seen corresponding path program 4 times [2023-12-15 16:55:59,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 16:55:59,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76853039] [2023-12-15 16:55:59,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 16:55:59,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 16:55:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:12,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-12-15 16:56:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 16:56:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 19136 backedges. 2 proven. 19110 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-15 16:56:12,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 16:56:12,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76853039] [2023-12-15 16:56:12,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76853039] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 16:56:12,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581953091] [2023-12-15 16:56:12,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-15 16:56:12,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 16:56:12,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 16:56:12,777 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 16:56:12,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-15 16:56:13,273 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-15 16:56:13,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 16:56:13,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 197 conjunts are in the unsatisfiable core [2023-12-15 16:56:13,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 16:56:13,506 INFO L134 CoverageAnalysis]: Checked inductivity of 19136 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-15 16:56:13,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 16:56:15,851 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 16:56:15,851 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 16:56:15,851 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 16:56:15,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-15 16:56:16,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-15 16:56:16,052 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 229 with TraceHistMax 195,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 219 known predicates. [2023-12-15 16:56:16,056 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1, 1, 1] [2023-12-15 16:56:16,057 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 16:56:16,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 04:56:16 BoogieIcfgContainer [2023-12-15 16:56:16,059 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 16:56:16,059 INFO L158 Benchmark]: Toolchain (without parser) took 68089.72ms. Allocated memory was 191.9MB in the beginning and 1.2GB in the end (delta: 968.9MB). Free memory was 147.8MB in the beginning and 949.6MB in the end (delta: -801.8MB). Peak memory consumption was 168.2MB. Max. memory is 8.0GB. [2023-12-15 16:56:16,059 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 16:56:16,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.14ms. Allocated memory is still 191.9MB. Free memory was 147.5MB in the beginning and 136.3MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-15 16:56:16,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.76ms. Allocated memory is still 191.9MB. Free memory was 136.3MB in the beginning and 134.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 16:56:16,059 INFO L158 Benchmark]: Boogie Preprocessor took 36.85ms. Allocated memory is still 191.9MB. Free memory was 134.5MB in the beginning and 132.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 16:56:16,060 INFO L158 Benchmark]: RCFGBuilder took 344.62ms. Allocated memory is still 191.9MB. Free memory was 132.4MB in the beginning and 118.0MB in the end (delta: 14.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-15 16:56:16,060 INFO L158 Benchmark]: TraceAbstraction took 67521.29ms. Allocated memory was 191.9MB in the beginning and 1.2GB in the end (delta: 968.9MB). Free memory was 117.1MB in the beginning and 949.6MB in the end (delta: -832.5MB). Peak memory consumption was 137.8MB. Max. memory is 8.0GB. [2023-12-15 16:56:16,061 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 191.9MB. Free memory is still 149.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.14ms. Allocated memory is still 191.9MB. Free memory was 147.5MB in the beginning and 136.3MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.76ms. Allocated memory is still 191.9MB. Free memory was 136.3MB in the beginning and 134.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.85ms. Allocated memory is still 191.9MB. Free memory was 134.5MB in the beginning and 132.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 344.62ms. Allocated memory is still 191.9MB. Free memory was 132.4MB in the beginning and 118.0MB in the end (delta: 14.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 67521.29ms. Allocated memory was 191.9MB in the beginning and 1.2GB in the end (delta: 968.9MB). Free memory was 117.1MB in the beginning and 949.6MB in the end (delta: -832.5MB). Peak memory consumption was 137.8MB. 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 analyzing trace of length 229 with TraceHistMax 195,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 219 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67.5s, OverallIterations: 14, TraceHistogramMax: 195, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 643 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 628 mSDsluCounter, 1924 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1508 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1448 IncrementalHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 416 mSDtfsCounter, 1448 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1888 GetRequests, 1029 SyntacticMatches, 2 SemanticMatches, 857 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22437 ImplicationChecksByTransitivity, 36.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=277occurred in iteration=13, InterpolantAutomatonStates: 663, 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, 13 MinimizatonAttempts, 78 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 33.3s InterpolantComputationTime, 1314 NumberOfCodeBlocks, 1065 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1877 ConstructedInterpolants, 0 QuantifiedInterpolants, 3688 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2469 ConjunctsInSsa, 216 ConjunctsInUnsatCore, 31 InterpolantComputations, 5 PerfectInterpolantSequences, 40160/78525 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