/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/standard_sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 17:18:07,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 17:18:07,686 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 17:18:07,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 17:18:07,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 17:18:07,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 17:18:07,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 17:18:07,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 17:18:07,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 17:18:07,714 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 17:18:07,714 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 17:18:07,715 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 17:18:07,715 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 17:18:07,716 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 17:18:07,716 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 17:18:07,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 17:18:07,717 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 17:18:07,717 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 17:18:07,717 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 17:18:07,718 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 17:18:07,718 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 17:18:07,718 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 17:18:07,718 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 17:18:07,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 17:18:07,719 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 17:18:07,719 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 17:18:07,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 17:18:07,719 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 17:18:07,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 17:18:07,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 17:18:07,721 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 17:18:07,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 17:18:07,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 17:18:07,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 17:18:07,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 17:18:07,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 17:18:07,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 17:18:07,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 17:18:07,722 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 17:18:07,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 17:18:07,722 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 17:18:07,722 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 17:18:07,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 17:18:07,722 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 17:18:07,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 17:18:07,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 17:18:07,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 17:18:07,934 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 17:18:07,934 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 17:18:07,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_sentinel-2.i [2023-12-18 17:18:08,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 17:18:09,043 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 17:18:09,043 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_sentinel-2.i [2023-12-18 17:18:09,048 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cbde8474/eef791bc129d44b8816383b910572d94/FLAG17d219998 [2023-12-18 17:18:09,058 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cbde8474/eef791bc129d44b8816383b910572d94 [2023-12-18 17:18:09,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 17:18:09,061 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 17:18:09,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 17:18:09,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 17:18:09,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 17:18:09,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@647ef882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09, skipping insertion in model container [2023-12-18 17:18:09,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,083 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 17:18:09,199 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/standard_sentinel-2.i[852,865] [2023-12-18 17:18:09,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 17:18:09,230 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 17:18:09,238 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/standard_sentinel-2.i[852,865] [2023-12-18 17:18:09,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 17:18:09,255 INFO L206 MainTranslator]: Completed translation [2023-12-18 17:18:09,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09 WrapperNode [2023-12-18 17:18:09,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 17:18:09,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 17:18:09,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 17:18:09,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 17:18:09,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,281 INFO L138 Inliner]: procedures = 16, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2023-12-18 17:18:09,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 17:18:09,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 17:18:09,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 17:18:09,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 17:18:09,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,309 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2023-12-18 17:18:09,310 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,317 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 17:18:09,329 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 17:18:09,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 17:18:09,329 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 17:18:09,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09" (1/1) ... [2023-12-18 17:18:09,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 17:18:09,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:09,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-18 17:18:09,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-18 17:18:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 17:18:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 17:18:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 17:18:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-18 17:18:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 17:18:09,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 17:18:09,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 17:18:09,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 17:18:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 17:18:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 17:18:09,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-18 17:18:09,432 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 17:18:09,433 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 17:18:09,527 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 17:18:09,562 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 17:18:09,562 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-18 17:18:09,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:18:09 BoogieIcfgContainer [2023-12-18 17:18:09,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 17:18:09,564 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 17:18:09,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 17:18:09,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 17:18:09,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 05:18:09" (1/3) ... [2023-12-18 17:18:09,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1456f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:18:09, skipping insertion in model container [2023-12-18 17:18:09,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 05:18:09" (2/3) ... [2023-12-18 17:18:09,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1456f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 05:18:09, skipping insertion in model container [2023-12-18 17:18:09,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 05:18:09" (3/3) ... [2023-12-18 17:18:09,568 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_sentinel-2.i [2023-12-18 17:18:09,578 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 17:18:09,578 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 17:18:09,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 17:18:09,612 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;@1559e26d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 17:18:09,612 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 17:18:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:09,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-18 17:18:09,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:09,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:09,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:09,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:09,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1906001596, now seen corresponding path program 1 times [2023-12-18 17:18:09,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:09,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116327518] [2023-12-18 17:18:09,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:09,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:18:09,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:09,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116327518] [2023-12-18 17:18:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116327518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 17:18:09,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 17:18:09,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 17:18:09,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116843596] [2023-12-18 17:18:09,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 17:18:09,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-18 17:18:09,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:09,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-18 17:18:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 17:18:09,811 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:09,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:09,852 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2023-12-18 17:18:09,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-18 17:18:09,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-18 17:18:09,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:09,858 INFO L225 Difference]: With dead ends: 25 [2023-12-18 17:18:09,858 INFO L226 Difference]: Without dead ends: 11 [2023-12-18 17:18:09,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-18 17:18:09,863 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:09,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:18:09,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-18 17:18:09,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-18 17:18:09,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-12-18 17:18:09,882 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2023-12-18 17:18:09,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:09,882 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-12-18 17:18:09,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:09,883 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-12-18 17:18:09,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-18 17:18:09,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:09,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:09,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-18 17:18:09,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:09,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:09,884 INFO L85 PathProgramCache]: Analyzing trace with hash 695681176, now seen corresponding path program 1 times [2023-12-18 17:18:09,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:09,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073269596] [2023-12-18 17:18:09,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:09,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:18:09,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073269596] [2023-12-18 17:18:09,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073269596] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449218358] [2023-12-18 17:18:09,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:09,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:09,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:09,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:18:09,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 17:18:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:10,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 17:18:10,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:18:10,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 17:18:10,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449218358] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:10,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:10,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-12-18 17:18:10,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650452185] [2023-12-18 17:18:10,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:10,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-18 17:18:10,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:10,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-18 17:18:10,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-18 17:18:10,113 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:10,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:10,134 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2023-12-18 17:18:10,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-18 17:18:10,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-18 17:18:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:10,135 INFO L225 Difference]: With dead ends: 22 [2023-12-18 17:18:10,135 INFO L226 Difference]: Without dead ends: 14 [2023-12-18 17:18:10,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-18 17:18:10,137 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:10,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:18:10,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-18 17:18:10,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-18 17:18:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-12-18 17:18:10,143 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2023-12-18 17:18:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:10,144 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-12-18 17:18:10,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-12-18 17:18:10,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-18 17:18:10,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:10,146 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:10,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-18 17:18:10,351 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 [2023-12-18 17:18:10,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:10,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash -648600920, now seen corresponding path program 2 times [2023-12-18 17:18:10,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:10,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239539339] [2023-12-18 17:18:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:10,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:10,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-18 17:18:10,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:10,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239539339] [2023-12-18 17:18:10,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239539339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 17:18:10,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 17:18:10,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-18 17:18:10,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532345680] [2023-12-18 17:18:10,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 17:18:10,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 17:18:10,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:10,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 17:18:10,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 17:18:10,473 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:10,497 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2023-12-18 17:18:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 17:18:10,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-18 17:18:10,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:10,498 INFO L225 Difference]: With dead ends: 20 [2023-12-18 17:18:10,498 INFO L226 Difference]: Without dead ends: 16 [2023-12-18 17:18:10,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 17:18:10,500 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:10,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:18:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-18 17:18:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-18 17:18:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-12-18 17:18:10,506 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2023-12-18 17:18:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:10,506 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-12-18 17:18:10,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:10,506 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-12-18 17:18:10,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-18 17:18:10,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:10,507 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:10,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-18 17:18:10,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:10,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:10,508 INFO L85 PathProgramCache]: Analyzing trace with hash -486551357, now seen corresponding path program 1 times [2023-12-18 17:18:10,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:10,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938474474] [2023-12-18 17:18:10,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:10,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:18:10,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:10,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938474474] [2023-12-18 17:18:10,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938474474] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592175497] [2023-12-18 17:18:10,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:10,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:10,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:10,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:18:10,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 17:18:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:10,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-18 17:18:10,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:18:10,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:18:10,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592175497] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:10,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:10,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-12-18 17:18:10,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64585740] [2023-12-18 17:18:10,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:10,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-18 17:18:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:10,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-18 17:18:10,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-12-18 17:18:10,726 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:10,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:10,747 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2023-12-18 17:18:10,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-18 17:18:10,747 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-18 17:18:10,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:10,748 INFO L225 Difference]: With dead ends: 32 [2023-12-18 17:18:10,749 INFO L226 Difference]: Without dead ends: 22 [2023-12-18 17:18:10,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-12-18 17:18:10,750 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:10,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:18:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-18 17:18:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-18 17:18:10,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-12-18 17:18:10,755 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2023-12-18 17:18:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:10,755 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-12-18 17:18:10,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2023-12-18 17:18:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-18 17:18:10,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:10,757 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:10,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 17:18:10,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-18 17:18:10,964 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:10,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:10,964 INFO L85 PathProgramCache]: Analyzing trace with hash 405768899, now seen corresponding path program 2 times [2023-12-18 17:18:10,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:10,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759568094] [2023-12-18 17:18:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:10,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:11,152 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:18:11,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:11,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759568094] [2023-12-18 17:18:11,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759568094] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:11,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110783457] [2023-12-18 17:18:11,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 17:18:11,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:11,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:11,154 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:18:11,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 17:18:11,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 17:18:11,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:18:11,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-18 17:18:11,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:11,257 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:18:11,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:18:11,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110783457] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:11,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:11,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-12-18 17:18:11,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872547759] [2023-12-18 17:18:11,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:11,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-18 17:18:11,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:11,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-18 17:18:11,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-12-18 17:18:11,434 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:11,457 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2023-12-18 17:18:11,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-18 17:18:11,458 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-18 17:18:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:11,458 INFO L225 Difference]: With dead ends: 44 [2023-12-18 17:18:11,458 INFO L226 Difference]: Without dead ends: 34 [2023-12-18 17:18:11,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-12-18 17:18:11,459 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 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 [2023-12-18 17:18:11,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:18:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-18 17:18:11,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-12-18 17:18:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:11,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2023-12-18 17:18:11,463 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 21 [2023-12-18 17:18:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:11,463 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2023-12-18 17:18:11,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2023-12-18 17:18:11,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-18 17:18:11,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:11,464 INFO L195 NwaCegarLoop]: trace histogram [22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:11,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 17:18:11,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:11,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:11,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:11,665 INFO L85 PathProgramCache]: Analyzing trace with hash -829129021, now seen corresponding path program 3 times [2023-12-18 17:18:11,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:11,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868366102] [2023-12-18 17:18:11,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:11,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 17:18:12,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:12,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868366102] [2023-12-18 17:18:12,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868366102] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:12,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143502903] [2023-12-18 17:18:12,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 17:18:12,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:12,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:12,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:18:12,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 17:18:12,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-18 17:18:12,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:18:12,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-18 17:18:12,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:12,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-18 17:18:12,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-18 17:18:12,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-12-18 17:18:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-18 17:18:12,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-18 17:18:12,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143502903] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:12,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:12,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 6, 6] total 33 [2023-12-18 17:18:12,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779127762] [2023-12-18 17:18:12,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:12,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-18 17:18:12,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:12,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-18 17:18:12,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=732, Unknown=0, NotChecked=0, Total=1056 [2023-12-18 17:18:12,390 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 33 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 33 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:12,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:12,567 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2023-12-18 17:18:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-18 17:18:12,568 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 33 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-18 17:18:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:12,568 INFO L225 Difference]: With dead ends: 53 [2023-12-18 17:18:12,568 INFO L226 Difference]: Without dead ends: 39 [2023-12-18 17:18:12,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=361, Invalid=1045, Unknown=0, NotChecked=0, Total=1406 [2023-12-18 17:18:12,570 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:12,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 45 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 17:18:12,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-18 17:18:12,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-18 17:18:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2023-12-18 17:18:12,574 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 33 [2023-12-18 17:18:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:12,574 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2023-12-18 17:18:12,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 33 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:12,575 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2023-12-18 17:18:12,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-18 17:18:12,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:12,575 INFO L195 NwaCegarLoop]: trace histogram [23, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:12,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-18 17:18:12,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:12,780 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:12,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:12,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1717105495, now seen corresponding path program 4 times [2023-12-18 17:18:12,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:12,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457333914] [2023-12-18 17:18:12,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:12,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:18:13,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:13,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457333914] [2023-12-18 17:18:13,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457333914] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:13,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905031779] [2023-12-18 17:18:13,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 17:18:13,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:13,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:13,241 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:18:13,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 17:18:13,336 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 17:18:13,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:18:13,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-18 17:18:13,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:18:13,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:18:14,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905031779] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:14,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:14,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2023-12-18 17:18:14,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465567511] [2023-12-18 17:18:14,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:14,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-18 17:18:14,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:14,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-18 17:18:14,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2023-12-18 17:18:14,014 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 50 states, 50 states have (on average 1.16) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:14,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:14,061 INFO L93 Difference]: Finished difference Result 78 states and 104 transitions. [2023-12-18 17:18:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-18 17:18:14,061 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.16) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-18 17:18:14,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:14,062 INFO L225 Difference]: With dead ends: 78 [2023-12-18 17:18:14,062 INFO L226 Difference]: Without dead ends: 64 [2023-12-18 17:18:14,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2023-12-18 17:18:14,063 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:14,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:18:14,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-18 17:18:14,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-18 17:18:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2023-12-18 17:18:14,068 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 38 [2023-12-18 17:18:14,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:14,068 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2023-12-18 17:18:14,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.16) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:14,069 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2023-12-18 17:18:14,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-18 17:18:14,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:14,070 INFO L195 NwaCegarLoop]: trace histogram [48, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:14,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 17:18:14,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:14,275 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:14,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:14,276 INFO L85 PathProgramCache]: Analyzing trace with hash -680697671, now seen corresponding path program 5 times [2023-12-18 17:18:14,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:14,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079837029] [2023-12-18 17:18:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:14,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:18:15,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:15,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079837029] [2023-12-18 17:18:15,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079837029] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:15,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302759699] [2023-12-18 17:18:15,596 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 17:18:15,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:15,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:15,597 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:18:15,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 17:18:20,250 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-12-18 17:18:20,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:18:20,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-18 17:18:20,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:18:20,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:18:22,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302759699] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:22,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:22,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 99 [2023-12-18 17:18:22,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650338172] [2023-12-18 17:18:22,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:22,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2023-12-18 17:18:22,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:22,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2023-12-18 17:18:22,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2023-12-18 17:18:22,698 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 100 states, 100 states have (on average 1.08) internal successors, (108), 99 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:22,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:22,796 INFO L93 Difference]: Finished difference Result 128 states and 179 transitions. [2023-12-18 17:18:22,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-12-18 17:18:22,797 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.08) internal successors, (108), 99 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-18 17:18:22,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:22,801 INFO L225 Difference]: With dead ends: 128 [2023-12-18 17:18:22,801 INFO L226 Difference]: Without dead ends: 114 [2023-12-18 17:18:22,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2023-12-18 17:18:22,804 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:22,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 17:18:22,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-18 17:18:22,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-12-18 17:18:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.0176991150442478) internal successors, (115), 113 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:22,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2023-12-18 17:18:22,821 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 63 [2023-12-18 17:18:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:22,821 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2023-12-18 17:18:22,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.08) internal successors, (108), 99 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2023-12-18 17:18:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-18 17:18:22,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:22,823 INFO L195 NwaCegarLoop]: trace histogram [98, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:22,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-18 17:18:23,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:23,034 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:23,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:23,034 INFO L85 PathProgramCache]: Analyzing trace with hash -805441863, now seen corresponding path program 6 times [2023-12-18 17:18:23,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:23,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035786032] [2023-12-18 17:18:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:23,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4863 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 17:18:27,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:27,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035786032] [2023-12-18 17:18:27,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035786032] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:27,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825131501] [2023-12-18 17:18:27,666 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-18 17:18:27,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:27,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:27,668 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) [2023-12-18 17:18:27,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 17:18:27,899 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-18 17:18:27,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:18:27,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-18 17:18:27,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:28,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-18 17:18:28,425 INFO L349 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2023-12-18 17:18:28,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 47 [2023-12-18 17:18:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4863 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2023-12-18 17:18:28,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:29,276 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 49 treesize of output 43 [2023-12-18 17:18:29,284 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-12-18 17:18:29,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 1 [2023-12-18 17:18:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4863 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-12-18 17:18:29,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825131501] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:29,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:29,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 11, 10] total 119 [2023-12-18 17:18:29,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279775410] [2023-12-18 17:18:29,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:29,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2023-12-18 17:18:29,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:29,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2023-12-18 17:18:29,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5226, Invalid=8816, Unknown=0, NotChecked=0, Total=14042 [2023-12-18 17:18:29,296 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand has 119 states, 119 states have (on average 1.1680672268907564) internal successors, (139), 119 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:34,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:34,507 INFO L93 Difference]: Finished difference Result 145 states and 151 transitions. [2023-12-18 17:18:34,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-12-18 17:18:34,509 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 1.1680672268907564) internal successors, (139), 119 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2023-12-18 17:18:34,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:34,510 INFO L225 Difference]: With dead ends: 145 [2023-12-18 17:18:34,510 INFO L226 Difference]: Without dead ends: 123 [2023-12-18 17:18:34,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8430 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=15375, Invalid=36837, Unknown=0, NotChecked=0, Total=52212 [2023-12-18 17:18:34,516 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 48 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:34,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 46 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 17:18:34,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-18 17:18:34,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-12-18 17:18:34,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:34,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2023-12-18 17:18:34,523 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 113 [2023-12-18 17:18:34,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:34,523 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2023-12-18 17:18:34,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 1.1680672268907564) internal successors, (139), 119 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:34,523 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2023-12-18 17:18:34,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-18 17:18:34,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:34,525 INFO L195 NwaCegarLoop]: trace histogram [99, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:34,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 17:18:34,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:34,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:34,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:34,735 INFO L85 PathProgramCache]: Analyzing trace with hash -930996331, now seen corresponding path program 7 times [2023-12-18 17:18:34,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:34,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078114785] [2023-12-18 17:18:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:34,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5006 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:18:39,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:18:39,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078114785] [2023-12-18 17:18:39,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078114785] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:18:39,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555795668] [2023-12-18 17:18:39,248 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-18 17:18:39,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:18:39,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:18:39,250 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) [2023-12-18 17:18:39,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 17:18:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:18:39,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 101 conjunts are in the unsatisfiable core [2023-12-18 17:18:39,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:18:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5006 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:18:39,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:18:48,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5006 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:18:48,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555795668] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:18:48,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:18:48,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 201 [2023-12-18 17:18:48,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300096527] [2023-12-18 17:18:48,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:18:48,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 202 states [2023-12-18 17:18:48,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:18:48,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2023-12-18 17:18:48,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2023-12-18 17:18:48,303 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 202 states, 202 states have (on average 1.0396039603960396) internal successors, (210), 201 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:48,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:18:48,640 INFO L93 Difference]: Finished difference Result 246 states and 348 transitions. [2023-12-18 17:18:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2023-12-18 17:18:48,640 INFO L78 Accepts]: Start accepts. Automaton has has 202 states, 202 states have (on average 1.0396039603960396) internal successors, (210), 201 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2023-12-18 17:18:48,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:18:48,642 INFO L225 Difference]: With dead ends: 246 [2023-12-18 17:18:48,642 INFO L226 Difference]: Without dead ends: 224 [2023-12-18 17:18:48,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=20301, Invalid=20301, Unknown=0, NotChecked=0, Total=40602 [2023-12-18 17:18:48,644 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 17:18:48,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 17:18:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-18 17:18:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2023-12-18 17:18:48,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.0089686098654709) internal successors, (225), 223 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2023-12-18 17:18:48,670 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 122 [2023-12-18 17:18:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:18:48,670 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2023-12-18 17:18:48,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 202 states, 202 states have (on average 1.0396039603960396) internal successors, (210), 201 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:18:48,671 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2023-12-18 17:18:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-12-18 17:18:48,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:18:48,674 INFO L195 NwaCegarLoop]: trace histogram [200, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:18:48,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 17:18:48,874 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,SelfDestructingSolverStorable9 [2023-12-18 17:18:48,874 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:18:48,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:18:48,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2120155045, now seen corresponding path program 8 times [2023-12-18 17:18:48,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:18:48,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810235839] [2023-12-18 17:18:48,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:18:48,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:18:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:19:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 20156 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:19:05,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:19:05,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810235839] [2023-12-18 17:19:05,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810235839] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:19:05,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461958669] [2023-12-18 17:19:05,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 17:19:05,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:19:05,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:19:05,474 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) [2023-12-18 17:19:05,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 17:19:05,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 17:19:05,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:19:05,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 202 conjunts are in the unsatisfiable core [2023-12-18 17:19:05,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:19:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 20156 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:19:06,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:19:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 20156 backedges. 0 proven. 20100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:19:40,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461958669] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:19:40,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:19:40,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202, 202] total 403 [2023-12-18 17:19:40,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713674719] [2023-12-18 17:19:40,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:19:40,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 404 states [2023-12-18 17:19:40,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:19:40,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 404 interpolants. [2023-12-18 17:19:40,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81406, Invalid=81406, Unknown=0, NotChecked=0, Total=162812 [2023-12-18 17:19:40,957 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 404 states, 404 states have (on average 1.0198019801980198) internal successors, (412), 403 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:19:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:19:42,627 INFO L93 Difference]: Finished difference Result 448 states and 651 transitions. [2023-12-18 17:19:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2023-12-18 17:19:42,628 INFO L78 Accepts]: Start accepts. Automaton has has 404 states, 404 states have (on average 1.0198019801980198) internal successors, (412), 403 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2023-12-18 17:19:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:19:42,631 INFO L225 Difference]: With dead ends: 448 [2023-12-18 17:19:42,631 INFO L226 Difference]: Without dead ends: 426 [2023-12-18 17:19:42,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.9s TimeCoverageRelationStatistics Valid=81406, Invalid=81406, Unknown=0, NotChecked=0, Total=162812 [2023-12-18 17:19:42,636 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-18 17:19:42,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-18 17:19:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2023-12-18 17:19:42,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2023-12-18 17:19:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.0047058823529411) internal successors, (427), 425 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:19:42,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 427 transitions. [2023-12-18 17:19:42,651 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 427 transitions. Word has length 223 [2023-12-18 17:19:42,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:19:42,651 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 427 transitions. [2023-12-18 17:19:42,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 404 states, 404 states have (on average 1.0198019801980198) internal successors, (412), 403 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:19:42,652 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 427 transitions. [2023-12-18 17:19:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2023-12-18 17:19:42,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:19:42,655 INFO L195 NwaCegarLoop]: trace histogram [402, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:19:42,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 17:19:42,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:19:42,865 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:19:42,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:19:42,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1380382117, now seen corresponding path program 9 times [2023-12-18 17:19:42,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:19:42,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551493110] [2023-12-18 17:19:42,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:19:42,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:19:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:20:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 81059 backedges. 0 proven. 81003 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-18 17:20:54,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:20:54,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551493110] [2023-12-18 17:20:54,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551493110] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:20:54,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314544813] [2023-12-18 17:20:54,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 17:20:54,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:20:54,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:20:54,636 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) [2023-12-18 17:20:54,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 17:20:55,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-18 17:20:55,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:20:55,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-18 17:20:55,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:20:55,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-18 17:20:58,790 INFO L349 Elim1Store]: treesize reduction 24, result has 86.1 percent of original size [2023-12-18 17:20:58,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 86 treesize of output 179 [2023-12-18 17:20:59,515 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-12-18 17:20:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 81059 backedges. 0 proven. 1259 refuted. 0 times theorem prover too weak. 79800 trivial. 0 not checked. [2023-12-18 17:20:59,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:21:06,302 INFO L134 CoverageAnalysis]: Checked inductivity of 81059 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 81003 trivial. 0 not checked. [2023-12-18 17:21:06,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314544813] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:21:06,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:21:06,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [404, 21, 18] total 440 [2023-12-18 17:21:06,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418432122] [2023-12-18 17:21:06,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:21:06,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 440 states [2023-12-18 17:21:06,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:21:06,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 440 interpolants. [2023-12-18 17:21:06,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83258, Invalid=109902, Unknown=0, NotChecked=0, Total=193160 [2023-12-18 17:21:06,319 INFO L87 Difference]: Start difference. First operand 426 states and 427 transitions. Second operand has 440 states, 440 states have (on average 1.040909090909091) internal successors, (458), 440 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:21:19,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:21:19,417 INFO L93 Difference]: Finished difference Result 481 states and 491 transitions. [2023-12-18 17:21:19,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 442 states. [2023-12-18 17:21:19,424 INFO L78 Accepts]: Start accepts. Automaton has has 440 states, 440 states have (on average 1.040909090909091) internal successors, (458), 440 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 425 [2023-12-18 17:21:19,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:21:19,425 INFO L225 Difference]: With dead ends: 481 [2023-12-18 17:21:19,425 INFO L226 Difference]: Without dead ends: 443 [2023-12-18 17:21:19,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1279 GetRequests, 814 SyntacticMatches, 0 SemanticMatches, 465 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16422 ImplicationChecksByTransitivity, 66.9s TimeCoverageRelationStatistics Valid=83858, Invalid=133764, Unknown=0, NotChecked=0, Total=217622 [2023-12-18 17:21:19,433 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 75 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-18 17:21:19,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 85 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-18 17:21:19,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-12-18 17:21:19,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2023-12-18 17:21:19,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.004524886877828) internal successors, (444), 442 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:21:19,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 444 transitions. [2023-12-18 17:21:19,450 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 444 transitions. Word has length 425 [2023-12-18 17:21:19,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:21:19,450 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 444 transitions. [2023-12-18 17:21:19,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 440 states, 440 states have (on average 1.040909090909091) internal successors, (458), 440 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:21:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 444 transitions. [2023-12-18 17:21:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2023-12-18 17:21:19,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:21:19,455 INFO L195 NwaCegarLoop]: trace histogram [403, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:21:19,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 17:21:19,661 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,SelfDestructingSolverStorable11 [2023-12-18 17:21:19,661 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:21:19,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:21:19,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2003097965, now seen corresponding path program 10 times [2023-12-18 17:21:19,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:21:19,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36973470] [2023-12-18 17:21:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:21:19,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:21:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:22:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 81646 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-18 17:22:34,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:22:34,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36973470] [2023-12-18 17:22:34,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36973470] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:22:34,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465410112] [2023-12-18 17:22:34,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 17:22:34,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:22:34,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:22:34,029 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) [2023-12-18 17:22:34,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 17:22:34,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 17:22:34,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 17:22:34,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 3758 conjuncts, 405 conjunts are in the unsatisfiable core [2023-12-18 17:22:34,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 17:22:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 81646 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-18 17:22:35,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 17:25:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 81646 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-18 17:25:02,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465410112] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 17:25:02,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-18 17:25:02,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [405, 405, 405] total 809 [2023-12-18 17:25:02,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79655516] [2023-12-18 17:25:02,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-18 17:25:02,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 810 states [2023-12-18 17:25:02,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:25:02,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 810 interpolants. [2023-12-18 17:25:02,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327645, Invalid=327645, Unknown=0, NotChecked=0, Total=655290 [2023-12-18 17:25:02,205 INFO L87 Difference]: Start difference. First operand 443 states and 444 transitions. Second operand has 810 states, 810 states have (on average 1.0098765432098766) internal successors, (818), 809 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:25:13,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 17:25:13,980 INFO L93 Difference]: Finished difference Result 886 states and 1292 transitions. [2023-12-18 17:25:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 810 states. [2023-12-18 17:25:13,981 INFO L78 Accepts]: Start accepts. Automaton has has 810 states, 810 states have (on average 1.0098765432098766) internal successors, (818), 809 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 442 [2023-12-18 17:25:13,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 17:25:13,984 INFO L225 Difference]: With dead ends: 886 [2023-12-18 17:25:13,984 INFO L226 Difference]: Without dead ends: 848 [2023-12-18 17:25:14,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1287 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 808 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 194.4s TimeCoverageRelationStatistics Valid=327645, Invalid=327645, Unknown=0, NotChecked=0, Total=655290 [2023-12-18 17:25:14,007 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-18 17:25:14,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-18 17:25:14,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2023-12-18 17:25:14,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2023-12-18 17:25:14,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 847 states have (on average 1.0023612750885478) internal successors, (849), 847 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:25:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 849 transitions. [2023-12-18 17:25:14,034 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 849 transitions. Word has length 442 [2023-12-18 17:25:14,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 17:25:14,034 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 849 transitions. [2023-12-18 17:25:14,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 810 states, 810 states have (on average 1.0098765432098766) internal successors, (818), 809 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:25:14,035 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 849 transitions. [2023-12-18 17:25:14,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2023-12-18 17:25:14,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 17:25:14,040 INFO L195 NwaCegarLoop]: trace histogram [808, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 17:25:14,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-18 17:25:14,244 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,SelfDestructingSolverStorable12 [2023-12-18 17:25:14,245 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 17:25:14,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 17:25:14,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1819145859, now seen corresponding path program 11 times [2023-12-18 17:25:14,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 17:25:14,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228376279] [2023-12-18 17:25:14,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 17:25:14,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 17:25:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 17:31:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 327076 backedges. 0 proven. 326836 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-12-18 17:31:14,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 17:31:14,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228376279] [2023-12-18 17:31:14,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228376279] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-18 17:31:14,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999565521] [2023-12-18 17:31:14,577 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 17:31:14,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 17:31:14,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 17:31:14,579 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 17:31:14,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process Received shutdown request... [2023-12-18 17:31:31,502 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 17:31:31,502 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 17:31:32,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-18 17:31:32,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 17:31:32,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-18 17:31:32,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [810] total 810 [2023-12-18 17:31:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996413223] [2023-12-18 17:31:32,570 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-18 17:31:32,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 811 states [2023-12-18 17:31:32,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 17:31:32,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 811 interpolants. [2023-12-18 17:31:32,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328455, Invalid=328455, Unknown=0, NotChecked=0, Total=656910 [2023-12-18 17:31:32,636 INFO L87 Difference]: Start difference. First operand 848 states and 849 transitions. Second operand has 811 states, 811 states have (on average 1.0086313193588163) internal successors, (818), 810 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 17:31:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 17:31:32,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 17:31:32,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 809 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 198.0s TimeCoverageRelationStatistics Valid=328455, Invalid=328455, Unknown=0, NotChecked=0, Total=656910 [2023-12-18 17:31:32,670 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 17:31:32,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 17:31:32,671 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-18 17:31:32,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-18 17:31:32,672 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (848states) and FLOYD_HOARE automaton (currently 2 states, 811 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-18 17:31:32,675 INFO L445 BasicCegarLoop]: Path program histogram: [11, 2, 1] [2023-12-18 17:31:32,676 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 17:31:32,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 05:31:32 BoogieIcfgContainer [2023-12-18 17:31:32,678 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 17:31:32,678 INFO L158 Benchmark]: Toolchain (without parser) took 803617.22ms. Allocated memory was 274.7MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 230.8MB in the beginning and 731.9MB in the end (delta: -501.1MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-18 17:31:32,678 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 228.6MB. Free memory is still 178.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 17:31:32,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.33ms. Allocated memory is still 274.7MB. Free memory was 230.4MB in the beginning and 219.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-18 17:31:32,678 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.27ms. Allocated memory is still 274.7MB. Free memory was 219.8MB in the beginning and 218.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 17:31:32,678 INFO L158 Benchmark]: Boogie Preprocessor took 46.00ms. Allocated memory is still 274.7MB. Free memory was 218.2MB in the beginning and 216.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-18 17:31:32,679 INFO L158 Benchmark]: RCFGBuilder took 234.09ms. Allocated memory is still 274.7MB. Free memory was 216.5MB in the beginning and 204.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 17:31:32,679 INFO L158 Benchmark]: TraceAbstraction took 803113.77ms. Allocated memory was 274.7MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 204.2MB in the beginning and 731.9MB in the end (delta: -527.6MB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-18 17:31:32,680 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 228.6MB. Free memory is still 178.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.33ms. Allocated memory is still 274.7MB. Free memory was 230.4MB in the beginning and 219.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.27ms. Allocated memory is still 274.7MB. Free memory was 219.8MB in the beginning and 218.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.00ms. Allocated memory is still 274.7MB. Free memory was 218.2MB in the beginning and 216.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 234.09ms. Allocated memory is still 274.7MB. Free memory was 216.5MB in the beginning and 204.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 803113.77ms. Allocated memory was 274.7MB in the beginning and 2.0GB in the end (delta: 1.7GB). Free memory was 204.2MB in the beginning and 731.9MB in the end (delta: -527.6MB). Peak memory consumption was 1.2GB. 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: 14]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 14). Cancelled while NwaCegarLoop was constructing difference of abstraction (848states) and FLOYD_HOARE automaton (currently 2 states, 811 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 803.1s, OverallIterations: 14, TraceHistogramMax: 808, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 32.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 130 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 559 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 455 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2815 IncrementalHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 104 mSDtfsCounter, 2815 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5279 GetRequests, 2146 SyntacticMatches, 0 SemanticMatches, 3133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25047 ImplicationChecksByTransitivity, 530.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=848occurred in iteration=13, InterpolantAutomatonStates: 2208, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 9.1s SatisfiabilityAnalysisTime, 737.8s InterpolantComputationTime, 3878 NumberOfCodeBlocks, 3384 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 5347 ConstructedInterpolants, 17 QuantifiedInterpolants, 15141 SizeOfPredicates, 34 NumberOfNonLiveVariables, 8200 ConjunctsInSsa, 902 ConjunctsInUnsatCore, 36 InterpolantComputations, 2 PerfectInterpolantSequences, 172373/910679 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