/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/loops/sum03-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 21:58:34,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 21:58:34,895 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 21:58:34,899 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 21:58:34,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 21:58:34,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 21:58:34,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 21:58:34,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 21:58:34,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 21:58:34,929 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 21:58:34,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 21:58:34,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 21:58:34,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 21:58:34,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 21:58:34,931 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 21:58:34,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 21:58:34,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 21:58:34,932 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 21:58:34,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 21:58:34,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 21:58:34,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 21:58:34,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 21:58:34,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 21:58:34,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 21:58:34,934 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 21:58:34,934 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 21:58:34,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 21:58:34,934 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 21:58:34,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 21:58:34,935 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 21:58:34,936 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 21:58:34,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 21:58:34,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:58:34,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 21:58:34,937 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 21:58:34,937 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 21:58:34,937 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 21:58:34,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 21:58:34,937 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 21:58:34,937 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 21:58:34,937 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 21:58:34,938 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 21:58:34,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 21:58:34,938 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 21:58:35,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 21:58:35,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 21:58:35,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 21:58:35,189 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 21:58:35,189 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 21:58:35,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2023-12-15 21:58:36,322 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 21:58:36,512 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 21:58:36,513 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i [2023-12-15 21:58:36,519 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5799df88d/9ba5836c7b1b4aff8f71ec606f6f4d02/FLAGff95d509f [2023-12-15 21:58:36,534 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5799df88d/9ba5836c7b1b4aff8f71ec606f6f4d02 [2023-12-15 21:58:36,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 21:58:36,538 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 21:58:36,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 21:58:36,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 21:58:36,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 21:58:36,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a58bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36, skipping insertion in model container [2023-12-15 21:58:36,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,566 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 21:58:36,720 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i[807,820] [2023-12-15 21:58:36,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:58:36,744 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 21:58:36,756 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i[807,820] [2023-12-15 21:58:36,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 21:58:36,773 INFO L206 MainTranslator]: Completed translation [2023-12-15 21:58:36,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36 WrapperNode [2023-12-15 21:58:36,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 21:58:36,775 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 21:58:36,775 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 21:58:36,775 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 21:58:36,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,806 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2023-12-15 21:58:36,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 21:58:36,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 21:58:36,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 21:58:36,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 21:58:36,816 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,817 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,826 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 21:58:36,827 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,827 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,838 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,839 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,840 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 21:58:36,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 21:58:36,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 21:58:36,845 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 21:58:36,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36" (1/1) ... [2023-12-15 21:58:36,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 21:58:36,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:58:36,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 21:58:36,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 21:58:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 21:58:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 21:58:36,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 21:58:36,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 21:58:36,967 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 21:58:36,969 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 21:58:37,090 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 21:58:37,121 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 21:58:37,121 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 21:58:37,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:58:37 BoogieIcfgContainer [2023-12-15 21:58:37,121 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 21:58:37,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 21:58:37,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 21:58:37,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 21:58:37,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 09:58:36" (1/3) ... [2023-12-15 21:58:37,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56192a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:58:37, skipping insertion in model container [2023-12-15 21:58:37,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 09:58:36" (2/3) ... [2023-12-15 21:58:37,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56192a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 09:58:37, skipping insertion in model container [2023-12-15 21:58:37,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 09:58:37" (3/3) ... [2023-12-15 21:58:37,129 INFO L112 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2023-12-15 21:58:37,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 21:58:37,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 21:58:37,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 21:58:37,199 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;@44ef965d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 21:58:37,199 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 21:58:37,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:37,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-15 21:58:37,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:37,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-15 21:58:37,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:58:37,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:58:37,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1900177325, now seen corresponding path program 1 times [2023-12-15 21:58:37,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:58:37,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824008281] [2023-12-15 21:58:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:37,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:58:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:37,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:58:37,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824008281] [2023-12-15 21:58:37,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824008281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:58:37,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:58:37,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 21:58:37,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964307390] [2023-12-15 21:58:37,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:58:37,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 21:58:37,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:58:37,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 21:58:37,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 21:58:37,571 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:37,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:58:37,639 INFO L93 Difference]: Finished difference Result 22 states and 33 transitions. [2023-12-15 21:58:37,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:58:37,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-15 21:58:37,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:58:37,647 INFO L225 Difference]: With dead ends: 22 [2023-12-15 21:58:37,648 INFO L226 Difference]: Without dead ends: 13 [2023-12-15 21:58:37,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:58:37,654 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:37,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:58:37,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-15 21:58:37,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-15 21:58:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-12-15 21:58:37,681 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2023-12-15 21:58:37,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:58:37,681 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-12-15 21:58:37,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:37,682 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-12-15 21:58:37,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-15 21:58:37,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:37,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-15 21:58:37,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 21:58:37,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:58:37,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:58:37,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1900117743, now seen corresponding path program 1 times [2023-12-15 21:58:37,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:58:37,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146715315] [2023-12-15 21:58:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:37,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:58:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:37,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:58:37,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146715315] [2023-12-15 21:58:37,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146715315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 21:58:37,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 21:58:37,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 21:58:37,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089350323] [2023-12-15 21:58:37,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 21:58:37,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 21:58:37,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:58:37,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 21:58:37,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:58:37,909 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:37,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:58:37,946 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2023-12-15 21:58:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 21:58:37,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-15 21:58:37,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:58:37,947 INFO L225 Difference]: With dead ends: 24 [2023-12-15 21:58:37,947 INFO L226 Difference]: Without dead ends: 12 [2023-12-15 21:58:37,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 21:58:37,949 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:37,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:58:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-15 21:58:37,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-15 21:58:37,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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) [2023-12-15 21:58:37,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-12-15 21:58:37,961 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 6 [2023-12-15 21:58:37,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:58:37,962 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-12-15 21:58:37,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:37,962 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-12-15 21:58:37,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-15 21:58:37,962 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:37,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 21:58:37,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 21:58:37,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:58:37,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:58:37,968 INFO L85 PathProgramCache]: Analyzing trace with hash -583907041, now seen corresponding path program 1 times [2023-12-15 21:58:37,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:58:37,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386154782] [2023-12-15 21:58:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:37,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:58:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:38,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:58:38,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386154782] [2023-12-15 21:58:38,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386154782] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:58:38,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578606799] [2023-12-15 21:58:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:38,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:58:38,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:58:38,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:58:38,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 21:58:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:38,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-15 21:58:38,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:58:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:38,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:58:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:38,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578606799] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:58:38,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:58:38,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-15 21:58:38,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969007887] [2023-12-15 21:58:38,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:58:38,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-15 21:58:38,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:58:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-15 21:58:38,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-15 21:58:38,208 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:38,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:58:38,253 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-12-15 21:58:38,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 21:58:38,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-15 21:58:38,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:58:38,255 INFO L225 Difference]: With dead ends: 37 [2023-12-15 21:58:38,255 INFO L226 Difference]: Without dead ends: 30 [2023-12-15 21:58:38,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-12-15 21:58:38,256 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:38,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 32 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 21:58:38,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-15 21:58:38,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2023-12-15 21:58:38,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:38,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2023-12-15 21:58:38,261 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2023-12-15 21:58:38,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:58:38,261 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2023-12-15 21:58:38,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2023-12-15 21:58:38,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-15 21:58:38,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:38,262 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-12-15 21:58:38,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 21:58:38,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:58:38,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:58:38,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:58:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash -583966623, now seen corresponding path program 1 times [2023-12-15 21:58:38,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:58:38,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542160316] [2023-12-15 21:58:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:38,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:58:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:38,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:58:38,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542160316] [2023-12-15 21:58:38,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542160316] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:58:38,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143865167] [2023-12-15 21:58:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:38,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:58:38,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:58:38,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:58:38,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 21:58:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:38,887 WARN L260 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-15 21:58:38,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:58:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:39,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:58:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:39,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143865167] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:58:39,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:58:39,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-12-15 21:58:39,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079044074] [2023-12-15 21:58:39,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:58:39,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-15 21:58:39,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:58:39,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-15 21:58:39,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-12-15 21:58:39,417 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:39,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:58:39,827 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-12-15 21:58:39,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-15 21:58:39,827 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-15 21:58:39,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:58:39,828 INFO L225 Difference]: With dead ends: 33 [2023-12-15 21:58:39,828 INFO L226 Difference]: Without dead ends: 31 [2023-12-15 21:58:39,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-12-15 21:58:39,830 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:39,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 35 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 21:58:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-15 21:58:39,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-12-15 21:58:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 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) [2023-12-15 21:58:39,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2023-12-15 21:58:39,839 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 11 [2023-12-15 21:58:39,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:58:39,839 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2023-12-15 21:58:39,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:39,840 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2023-12-15 21:58:39,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 21:58:39,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:39,841 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1] [2023-12-15 21:58:39,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 21:58:40,052 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 [2023-12-15 21:58:40,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:58:40,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:58:40,053 INFO L85 PathProgramCache]: Analyzing trace with hash 517506605, now seen corresponding path program 2 times [2023-12-15 21:58:40,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:58:40,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834380327] [2023-12-15 21:58:40,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:40,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:58:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 21:58:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:40,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 21:58:40,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834380327] [2023-12-15 21:58:40,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834380327] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 21:58:40,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461207926] [2023-12-15 21:58:40,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-15 21:58:40,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 21:58:40,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 21:58:40,169 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 21:58:40,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 21:58:40,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-15 21:58:40,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-15 21:58:40,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 21:58:40,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 21:58:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:40,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 21:58:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 21:58:40,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461207926] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 21:58:40,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 21:58:40,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2023-12-15 21:58:40,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881932223] [2023-12-15 21:58:40,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 21:58:40,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-15 21:58:40,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 21:58:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-15 21:58:40,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2023-12-15 21:58:40,625 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 21:58:46,719 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2023-12-15 21:58:46,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 21:58:46,720 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 20 states have internal predecessors, (64), 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 26 [2023-12-15 21:58:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 21:58:46,721 INFO L225 Difference]: With dead ends: 68 [2023-12-15 21:58:46,721 INFO L226 Difference]: Without dead ends: 61 [2023-12-15 21:58:46,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=307, Invalid=505, Unknown=0, NotChecked=0, Total=812 [2023-12-15 21:58:46,722 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 20 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 21:58:46,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 134 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 21:58:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-15 21:58:46,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2023-12-15 21:58:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 59 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2023-12-15 21:58:46,736 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 26 [2023-12-15 21:58:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 21:58:46,736 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2023-12-15 21:58:46,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 21:58:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2023-12-15 21:58:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-15 21:58:46,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 21:58:46,738 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1] [2023-12-15 21:58:46,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 21:58:46,950 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 [2023-12-15 21:58:46,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 21:58:46,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 21:58:46,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1411171347, now seen corresponding path program 3 times [2023-12-15 21:58:46,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 21:58:46,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940764425] [2023-12-15 21:58:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 21:58:46,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 21:58:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-15 21:58:47,021 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-15 21:58:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-15 21:58:47,079 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-15 21:58:47,079 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-15 21:58:47,080 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 21:58:47,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 21:58:47,084 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2023-12-15 21:58:47,087 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 21:58:47,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 09:58:47 BoogieIcfgContainer [2023-12-15 21:58:47,110 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 21:58:47,110 INFO L158 Benchmark]: Toolchain (without parser) took 10571.96ms. Allocated memory is still 247.5MB. Free memory was 200.8MB in the beginning and 114.1MB in the end (delta: 86.7MB). Peak memory consumption was 88.2MB. Max. memory is 8.0GB. [2023-12-15 21:58:47,110 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 197.1MB. Free memory is still 151.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 21:58:47,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.08ms. Allocated memory is still 247.5MB. Free memory was 200.3MB in the beginning and 189.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-15 21:58:47,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.57ms. Allocated memory is still 247.5MB. Free memory was 189.8MB in the beginning and 188.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-15 21:58:47,111 INFO L158 Benchmark]: Boogie Preprocessor took 37.17ms. Allocated memory is still 247.5MB. Free memory was 188.3MB in the beginning and 186.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-15 21:58:47,111 INFO L158 Benchmark]: RCFGBuilder took 276.24ms. Allocated memory is still 247.5MB. Free memory was 186.7MB in the beginning and 177.2MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-15 21:58:47,112 INFO L158 Benchmark]: TraceAbstraction took 9986.66ms. Allocated memory is still 247.5MB. Free memory was 176.7MB in the beginning and 114.1MB in the end (delta: 62.5MB). Peak memory consumption was 64.1MB. Max. memory is 8.0GB. [2023-12-15 21:58:47,113 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 197.1MB. Free memory is still 151.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 234.08ms. Allocated memory is still 247.5MB. Free memory was 200.3MB in the beginning and 189.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.57ms. Allocated memory is still 247.5MB. Free memory was 189.8MB in the beginning and 188.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.17ms. Allocated memory is still 247.5MB. Free memory was 188.3MB in the beginning and 186.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 276.24ms. Allocated memory is still 247.5MB. Free memory was 186.7MB in the beginning and 177.2MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 9986.66ms. Allocated memory is still 247.5MB. Free memory was 176.7MB in the beginning and 114.1MB in the end (delta: 62.5MB). Peak memory consumption was 64.1MB. 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 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int sn=0; [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L22] unsigned int loop1=__VERIFIER_nondet_uint(), n1=__VERIFIER_nondet_uint(); [L23] unsigned int x=0; VAL [sn=0, x=0] [L24] COND TRUE 1 VAL [sn=0, x=0] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=2, x=0] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=2, x=1] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=4, x=1] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=4, x=2] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=6, x=2] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=6, x=3] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=8, x=3] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=8, x=4] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=10, x=4] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=10, x=5] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=12, x=5] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=12, x=6] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=14, x=6] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=14, x=7] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=16, x=7] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=16, x=8] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=18, x=8] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=18, x=9] [L25] COND TRUE x<10 [L26] sn = sn + (2) VAL [sn=20, x=9] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L29] RET __VERIFIER_assert(sn==x*(2) || sn == 0) [L24] COND TRUE 1 VAL [sn=20, x=10] [L25] COND FALSE !(x<10) VAL [sn=20, x=10] [L28] x++ [L29] CALL __VERIFIER_assert(sn==x*(2) || sn == 0) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L15] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.9s, OverallIterations: 6, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 231 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 194 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 228 IncrementalHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 37 mSDtfsCounter, 228 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=5, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 995 SizeOfPredicates, 8 NumberOfNonLiveVariables, 170 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 30/162 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 proved your program to be incorrect! [2023-12-15 21:58:47,128 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 Received shutdown request...