/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-examples/standard_two_index_08.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 06:51:22,498 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 06:51:22,568 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 06:51:22,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 06:51:22,572 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 06:51:22,594 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 06:51:22,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 06:51:22,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 06:51:22,595 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 06:51:22,596 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 06:51:22,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 06:51:22,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 06:51:22,597 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 06:51:22,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 06:51:22,597 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 06:51:22,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 06:51:22,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 06:51:22,598 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 06:51:22,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 06:51:22,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 06:51:22,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 06:51:22,599 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 06:51:22,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 06:51:22,600 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 06:51:22,600 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 06:51:22,600 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 06:51:22,600 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 06:51:22,600 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 06:51:22,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 06:51:22,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 06:51:22,601 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 06:51:22,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 06:51:22,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 06:51:22,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 06:51:22,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 06:51:22,602 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 06:51:22,602 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 06:51:22,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 06:51:22,602 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 06:51:22,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 06:51:22,602 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 06:51:22,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 06:51:22,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 06:51:22,603 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 06:51:22,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 06:51:22,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 06:51:22,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 06:51:22,750 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 06:51:22,750 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 06:51:22,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_two_index_08.i [2023-12-20 06:51:23,853 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 06:51:23,998 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 06:51:23,999 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_two_index_08.i [2023-12-20 06:51:24,003 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/018e9283f/24f2fbdfcffb4d9dbe7d1ab703991b7a/FLAGfc2003d0f [2023-12-20 06:51:24,013 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/018e9283f/24f2fbdfcffb4d9dbe7d1ab703991b7a [2023-12-20 06:51:24,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 06:51:24,016 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 06:51:24,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 06:51:24,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 06:51:24,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 06:51:24,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@784aa2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24, skipping insertion in model container [2023-12-20 06:51:24,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,033 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 06:51:24,161 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_two_index_08.i[814,827] [2023-12-20 06:51:24,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 06:51:24,181 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 06:51:24,189 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_two_index_08.i[814,827] [2023-12-20 06:51:24,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 06:51:24,206 INFO L206 MainTranslator]: Completed translation [2023-12-20 06:51:24,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24 WrapperNode [2023-12-20 06:51:24,207 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 06:51:24,208 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 06:51:24,208 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 06:51:24,208 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 06:51:24,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,230 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2023-12-20 06:51:24,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 06:51:24,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 06:51:24,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 06:51:24,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 06:51:24,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,238 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,246 INFO L175 MemorySlicer]: Split 7 memory accesses to 3 slices as follows [2, 3, 2]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-12-20 06:51:24,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,256 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,258 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 06:51:24,258 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 06:51:24,258 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 06:51:24,258 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 06:51:24,259 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24" (1/1) ... [2023-12-20 06:51:24,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 06:51:24,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:51:24,290 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) [2023-12-20 06:51:24,300 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 [2023-12-20 06:51:24,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 06:51:24,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 06:51:24,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-20 06:51:24,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-20 06:51:24,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-20 06:51:24,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-20 06:51:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-20 06:51:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-20 06:51:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 06:51:24,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 06:51:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-20 06:51:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-20 06:51:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-20 06:51:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-20 06:51:24,399 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 06:51:24,402 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 06:51:24,543 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 06:51:24,568 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 06:51:24,568 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-20 06:51:24,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:51:24 BoogieIcfgContainer [2023-12-20 06:51:24,569 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 06:51:24,570 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 06:51:24,570 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 06:51:24,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 06:51:24,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 06:51:24" (1/3) ... [2023-12-20 06:51:24,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6553dfec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:51:24, skipping insertion in model container [2023-12-20 06:51:24,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 06:51:24" (2/3) ... [2023-12-20 06:51:24,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6553dfec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 06:51:24, skipping insertion in model container [2023-12-20 06:51:24,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 06:51:24" (3/3) ... [2023-12-20 06:51:24,574 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_two_index_08.i [2023-12-20 06:51:24,586 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 06:51:24,587 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 06:51:24,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 06:51:24,622 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;@67d9cae3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 06:51:24,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 06:51:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 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) [2023-12-20 06:51:24,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-20 06:51:24,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:51:24,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:51:24,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:51:24,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:51:24,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1148868036, now seen corresponding path program 1 times [2023-12-20 06:51:24,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:51:24,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181580499] [2023-12-20 06:51:24,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:51:24,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:51:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:51:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 06:51:24,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:51:24,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181580499] [2023-12-20 06:51:24,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181580499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 06:51:24,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 06:51:24,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 06:51:24,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940485043] [2023-12-20 06:51:24,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 06:51:24,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 06:51:24,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:51:24,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 06:51:24,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 06:51:24,905 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 11 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) [2023-12-20 06:51:24,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:51:24,947 INFO L93 Difference]: Finished difference Result 23 states and 35 transitions. [2023-12-20 06:51:24,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 06:51:24,949 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 [2023-12-20 06:51:24,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:51:24,953 INFO L225 Difference]: With dead ends: 23 [2023-12-20 06:51:24,954 INFO L226 Difference]: Without dead ends: 11 [2023-12-20 06:51:24,955 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 [2023-12-20 06:51:24,958 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:51:24,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:51:24,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-12-20 06:51:24,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-12-20 06:51:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:51:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-12-20 06:51:24,981 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2023-12-20 06:51:24,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:51:24,981 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-12-20 06:51:24,982 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) [2023-12-20 06:51:24,982 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-12-20 06:51:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-20 06:51:24,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:51:24,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:51:24,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 06:51:24,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:51:24,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:51:24,985 INFO L85 PathProgramCache]: Analyzing trace with hash -790446873, now seen corresponding path program 1 times [2023-12-20 06:51:24,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:51:24,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313233186] [2023-12-20 06:51:24,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:51:24,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:51:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:51:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 06:51:25,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:51:25,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313233186] [2023-12-20 06:51:25,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313233186] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:51:25,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760177288] [2023-12-20 06:51:25,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:51:25,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:51:25,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:51:25,117 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) [2023-12-20 06:51:25,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 06:51:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:51:25,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-20 06:51:25,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:51:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 06:51:25,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 06:51:25,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760177288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 06:51:25,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 06:51:25,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-12-20 06:51:25,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706488831] [2023-12-20 06:51:25,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 06:51:25,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 06:51:25,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:51:25,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 06:51:25,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 06:51:25,176 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:51:25,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:51:25,191 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-12-20 06:51:25,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 06:51:25,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-20 06:51:25,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:51:25,192 INFO L225 Difference]: With dead ends: 23 [2023-12-20 06:51:25,192 INFO L226 Difference]: Without dead ends: 17 [2023-12-20 06:51:25,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 06:51:25,193 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:51:25,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:51:25,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-20 06:51:25,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2023-12-20 06:51:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:51:25,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2023-12-20 06:51:25,196 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2023-12-20 06:51:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:51:25,196 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2023-12-20 06:51:25,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:51:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-12-20 06:51:25,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-20 06:51:25,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:51:25,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:51:25,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 06:51:25,402 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 [2023-12-20 06:51:25,402 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:51:25,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:51:25,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1317396867, now seen corresponding path program 1 times [2023-12-20 06:51:25,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:51:25,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348252253] [2023-12-20 06:51:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:51:25,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:51:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:51:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 06:51:25,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:51:25,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348252253] [2023-12-20 06:51:25,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348252253] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:51:25,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029632381] [2023-12-20 06:51:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:51:25,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:51:25,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:51:25,447 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) [2023-12-20 06:51:25,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 06:51:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:51:25,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-20 06:51:25,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:51:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 06:51:25,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:51:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-20 06:51:25,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029632381] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:51:25,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:51:25,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-12-20 06:51:25,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743325192] [2023-12-20 06:51:25,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:51:25,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 06:51:25,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:51:25,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 06:51:25,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 06:51:25,553 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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) [2023-12-20 06:51:25,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:51:25,597 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2023-12-20 06:51:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 06:51:25,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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) Word has length 10 [2023-12-20 06:51:25,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:51:25,599 INFO L225 Difference]: With dead ends: 35 [2023-12-20 06:51:25,599 INFO L226 Difference]: Without dead ends: 26 [2023-12-20 06:51:25,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-20 06:51:25,602 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:51:25,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:51:25,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-20 06:51:25,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16. [2023-12-20 06:51:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 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) [2023-12-20 06:51:25,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-12-20 06:51:25,606 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2023-12-20 06:51:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:51:25,606 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-12-20 06:51:25,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 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) [2023-12-20 06:51:25,606 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-12-20 06:51:25,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-20 06:51:25,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:51:25,607 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:51:25,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 06:51:25,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-12-20 06:51:25,812 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:51:25,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:51:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1476057404, now seen corresponding path program 2 times [2023-12-20 06:51:25,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:51:25,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928208322] [2023-12-20 06:51:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:51:25,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:51:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:51:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 06:51:25,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:51:25,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928208322] [2023-12-20 06:51:25,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928208322] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:51:25,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279480368] [2023-12-20 06:51:25,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 06:51:25,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:51:25,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:51:25,940 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) [2023-12-20 06:51:25,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 06:51:26,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 06:51:26,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:51:26,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 06:51:26,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:51:26,035 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 06:51:26,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:51:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 06:51:26,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279480368] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:51:26,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:51:26,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2023-12-20 06:51:26,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146075770] [2023-12-20 06:51:26,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:51:26,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 06:51:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:51:26,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 06:51:26,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=106, Unknown=0, NotChecked=0, Total=210 [2023-12-20 06:51:26,087 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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) [2023-12-20 06:51:26,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:51:26,145 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2023-12-20 06:51:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 06:51:26,146 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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 14 [2023-12-20 06:51:26,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:51:26,148 INFO L225 Difference]: With dead ends: 56 [2023-12-20 06:51:26,148 INFO L226 Difference]: Without dead ends: 46 [2023-12-20 06:51:26,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=106, Unknown=0, NotChecked=0, Total=210 [2023-12-20 06:51:26,152 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:51:26,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 28 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:51:26,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-20 06:51:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 26. [2023-12-20 06:51:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 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) [2023-12-20 06:51:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-12-20 06:51:26,160 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 14 [2023-12-20 06:51:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:51:26,160 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-12-20 06:51:26,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 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) [2023-12-20 06:51:26,160 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-12-20 06:51:26,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-20 06:51:26,161 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:51:26,161 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:51:26,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 06:51:26,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:51:26,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:51:26,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:51:26,369 INFO L85 PathProgramCache]: Analyzing trace with hash 16464004, now seen corresponding path program 3 times [2023-12-20 06:51:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:51:26,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896868868] [2023-12-20 06:51:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:51:26,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:51:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:51:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-20 06:51:26,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:51:26,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896868868] [2023-12-20 06:51:26,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896868868] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:51:26,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687638275] [2023-12-20 06:51:26,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 06:51:26,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:51:26,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:51:26,504 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) [2023-12-20 06:51:26,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 06:51:26,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-20 06:51:26,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:51:26,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 06:51:26,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:51:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-20 06:51:26,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:51:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-20 06:51:26,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687638275] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:51:26,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:51:26,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-20 06:51:26,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401547492] [2023-12-20 06:51:26,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:51:26,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 06:51:26,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:51:26,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 06:51:26,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-20 06:51:26,663 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 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) [2023-12-20 06:51:26,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:51:26,721 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2023-12-20 06:51:26,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 06:51:26,721 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 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 24 [2023-12-20 06:51:26,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:51:26,722 INFO L225 Difference]: With dead ends: 84 [2023-12-20 06:51:26,722 INFO L226 Difference]: Without dead ends: 78 [2023-12-20 06:51:26,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-12-20 06:51:26,723 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 76 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 06:51:26,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 37 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 06:51:26,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-12-20 06:51:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 32. [2023-12-20 06:51:26,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 06:51:26,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-12-20 06:51:26,728 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 24 [2023-12-20 06:51:26,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:51:26,728 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-12-20 06:51:26,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 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) [2023-12-20 06:51:26,728 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-12-20 06:51:26,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-20 06:51:26,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:51:26,729 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:51:26,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 06:51:26,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:51:26,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:51:26,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:51:26,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2121897660, now seen corresponding path program 4 times [2023-12-20 06:51:26,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:51:26,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280986478] [2023-12-20 06:51:26,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:51:26,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:51:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:51:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-12-20 06:51:27,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:51:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280986478] [2023-12-20 06:51:27,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280986478] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:51:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87639278] [2023-12-20 06:51:27,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-20 06:51:27,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:51:27,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:51:27,150 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) [2023-12-20 06:51:27,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 06:51:27,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-20 06:51:27,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:51:27,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 06:51:27,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:51:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-20 06:51:27,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:51:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-12-20 06:51:27,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87639278] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:51:27,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:51:27,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 38 [2023-12-20 06:51:27,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711333992] [2023-12-20 06:51:27,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:51:27,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-20 06:51:27,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:51:27,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-20 06:51:27,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=702, Invalid=704, Unknown=0, NotChecked=0, Total=1406 [2023-12-20 06:51:27,521 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 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) [2023-12-20 06:51:27,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:51:27,629 INFO L93 Difference]: Finished difference Result 141 states and 170 transitions. [2023-12-20 06:51:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-20 06:51:27,629 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 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 30 [2023-12-20 06:51:27,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:51:27,630 INFO L225 Difference]: With dead ends: 141 [2023-12-20 06:51:27,630 INFO L226 Difference]: Without dead ends: 123 [2023-12-20 06:51:27,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=702, Invalid=704, Unknown=0, NotChecked=0, Total=1406 [2023-12-20 06:51:27,631 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 239 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 06:51:27,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 64 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 06:51:27,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-20 06:51:27,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 58. [2023-12-20 06:51:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 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) [2023-12-20 06:51:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2023-12-20 06:51:27,650 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 30 [2023-12-20 06:51:27,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:51:27,650 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2023-12-20 06:51:27,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 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) [2023-12-20 06:51:27,651 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2023-12-20 06:51:27,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 06:51:27,654 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:51:27,654 INFO L195 NwaCegarLoop]: trace histogram [35, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:51:27,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 06:51:27,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:51:27,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:51:27,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:51:27,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1282731747, now seen corresponding path program 5 times [2023-12-20 06:51:27,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:51:27,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664510633] [2023-12-20 06:51:27,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:51:27,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:51:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:51:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-12-20 06:51:28,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:51:28,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664510633] [2023-12-20 06:51:28,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664510633] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:51:28,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414052082] [2023-12-20 06:51:28,228 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-20 06:51:28,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:51:28,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:51:28,228 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) [2023-12-20 06:51:28,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 06:54:59,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2023-12-20 06:54:59,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:54:59,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-20 06:54:59,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:55:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-20 06:55:00,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:55:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-20 06:55:01,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414052082] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:55:01,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:55:01,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 37, 37] total 84 [2023-12-20 06:55:01,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688192175] [2023-12-20 06:55:01,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:55:01,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-12-20 06:55:01,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:55:01,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-12-20 06:55:01,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3485, Invalid=3487, Unknown=0, NotChecked=0, Total=6972 [2023-12-20 06:55:01,160 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 84 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 84 states have internal predecessors, (99), 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) [2023-12-20 06:55:01,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:55:01,414 INFO L93 Difference]: Finished difference Result 226 states and 281 transitions. [2023-12-20 06:55:01,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-20 06:55:01,419 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 84 states have internal predecessors, (99), 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 56 [2023-12-20 06:55:01,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:55:01,422 INFO L225 Difference]: With dead ends: 226 [2023-12-20 06:55:01,422 INFO L226 Difference]: Without dead ends: 205 [2023-12-20 06:55:01,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3765 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3485, Invalid=3487, Unknown=0, NotChecked=0, Total=6972 [2023-12-20 06:55:01,425 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 247 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 06:55:01,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 118 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 06:55:01,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-20 06:55:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 110. [2023-12-20 06:55:01,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.0275229357798166) internal successors, (112), 109 states have internal predecessors, (112), 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) [2023-12-20 06:55:01,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2023-12-20 06:55:01,432 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 56 [2023-12-20 06:55:01,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:55:01,432 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2023-12-20 06:55:01,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 84 states have internal predecessors, (99), 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) [2023-12-20 06:55:01,432 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2023-12-20 06:55:01,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-20 06:55:01,433 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:55:01,433 INFO L195 NwaCegarLoop]: trace histogram [81, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:55:01,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 06:55:01,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:55:01,652 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:55:01,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:55:01,653 INFO L85 PathProgramCache]: Analyzing trace with hash 740110595, now seen corresponding path program 6 times [2023-12-20 06:55:01,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:55:01,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904510614] [2023-12-20 06:55:01,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:55:01,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:55:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:55:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3511 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-20 06:55:02,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:55:02,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904510614] [2023-12-20 06:55:02,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904510614] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:55:02,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829201891] [2023-12-20 06:55:02,402 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-20 06:55:02,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:55:02,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:55:02,403 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) [2023-12-20 06:55:02,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 06:57:18,650 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2023-12-20 06:57:18,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:57:18,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-20 06:57:18,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:57:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3511 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-20 06:57:18,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:57:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3511 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-20 06:57:19,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829201891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:57:19,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:57:19,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 43 [2023-12-20 06:57:19,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406836291] [2023-12-20 06:57:19,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:57:19,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-20 06:57:19,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:57:19,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-20 06:57:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 06:57:19,191 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand has 43 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 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) [2023-12-20 06:57:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:57:19,466 INFO L93 Difference]: Finished difference Result 333 states and 356 transitions. [2023-12-20 06:57:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-20 06:57:19,466 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 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 108 [2023-12-20 06:57:19,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:57:19,467 INFO L225 Difference]: With dead ends: 333 [2023-12-20 06:57:19,467 INFO L226 Difference]: Without dead ends: 327 [2023-12-20 06:57:19,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 06:57:19,468 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 448 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 06:57:19,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 124 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 06:57:19,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-20 06:57:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 131. [2023-12-20 06:57:19,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.023076923076923) internal successors, (133), 130 states have internal predecessors, (133), 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) [2023-12-20 06:57:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2023-12-20 06:57:19,477 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 108 [2023-12-20 06:57:19,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:57:19,477 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2023-12-20 06:57:19,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 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) [2023-12-20 06:57:19,477 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2023-12-20 06:57:19,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-20 06:57:19,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:57:19,478 INFO L195 NwaCegarLoop]: trace histogram [81, 40, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:57:19,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 06:57:19,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:57:19,692 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:57:19,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:57:19,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1365267431, now seen corresponding path program 7 times [2023-12-20 06:57:19,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:57:19,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86593508] [2023-12-20 06:57:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:57:19,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:57:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:57:21,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2023-12-20 06:57:21,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:57:21,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86593508] [2023-12-20 06:57:21,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86593508] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:57:21,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118880935] [2023-12-20 06:57:21,228 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-20 06:57:21,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:57:21,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:57:21,229 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) [2023-12-20 06:57:21,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 06:57:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:57:21,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 83 conjunts are in the unsatisfiable core [2023-12-20 06:57:21,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:57:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2023-12-20 06:57:22,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:57:26,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2023-12-20 06:57:26,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118880935] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:57:26,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:57:26,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 83, 83] total 197 [2023-12-20 06:57:26,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212725361] [2023-12-20 06:57:26,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:57:26,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2023-12-20 06:57:26,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:57:26,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2023-12-20 06:57:26,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19305, Invalid=19307, Unknown=0, NotChecked=0, Total=38612 [2023-12-20 06:57:26,343 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand has 197 states, 197 states have (on average 1.1065989847715736) internal successors, (218), 197 states have internal predecessors, (218), 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) [2023-12-20 06:57:28,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:57:28,829 INFO L93 Difference]: Finished difference Result 564 states and 692 transitions. [2023-12-20 06:57:28,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2023-12-20 06:57:28,830 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 197 states have (on average 1.1065989847715736) internal successors, (218), 197 states have internal predecessors, (218), 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 129 [2023-12-20 06:57:28,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:57:28,832 INFO L225 Difference]: With dead ends: 564 [2023-12-20 06:57:28,832 INFO L226 Difference]: Without dead ends: 516 [2023-12-20 06:57:28,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21457 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=19305, Invalid=19307, Unknown=0, NotChecked=0, Total=38612 [2023-12-20 06:57:28,836 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 831 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 06:57:28,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 280 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 06:57:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-12-20 06:57:28,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 256. [2023-12-20 06:57:28,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.011764705882353) internal successors, (258), 255 states have internal predecessors, (258), 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) [2023-12-20 06:57:28,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 258 transitions. [2023-12-20 06:57:28,845 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 258 transitions. Word has length 129 [2023-12-20 06:57:28,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:57:28,846 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 258 transitions. [2023-12-20 06:57:28,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 197 states have (on average 1.1065989847715736) internal successors, (218), 197 states have internal predecessors, (218), 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) [2023-12-20 06:57:28,846 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 258 transitions. [2023-12-20 06:57:28,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-12-20 06:57:28,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:57:28,848 INFO L195 NwaCegarLoop]: trace histogram [194, 52, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:57:28,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 06:57:29,055 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,SelfDestructingSolverStorable8 [2023-12-20 06:57:29,056 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:57:29,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:57:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash -836057948, now seen corresponding path program 8 times [2023-12-20 06:57:29,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:57:29,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021488144] [2023-12-20 06:57:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:57:29,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:57:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:57:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 20293 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 18915 trivial. 0 not checked. [2023-12-20 06:57:31,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:57:31,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021488144] [2023-12-20 06:57:31,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021488144] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:57:31,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141842179] [2023-12-20 06:57:31,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-20 06:57:31,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:57:31,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:57:31,852 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) [2023-12-20 06:57:31,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 06:57:32,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-20 06:57:32,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-20 06:57:32,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 2277 conjuncts, 196 conjunts are in the unsatisfiable core [2023-12-20 06:57:32,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 06:57:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 20293 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2023-12-20 06:57:34,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 06:57:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 20293 backedges. 0 proven. 18915 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2023-12-20 06:57:49,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141842179] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 06:57:49,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 06:57:49,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 196, 196] total 421 [2023-12-20 06:57:49,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961233690] [2023-12-20 06:57:49,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 06:57:49,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 421 states [2023-12-20 06:57:49,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 06:57:49,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 421 interpolants. [2023-12-20 06:57:49,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88409, Invalid=88411, Unknown=0, NotChecked=0, Total=176820 [2023-12-20 06:57:49,501 INFO L87 Difference]: Start difference. First operand 256 states and 258 transitions. Second operand has 421 states, 421 states have (on average 1.0831353919239906) internal successors, (456), 421 states have internal predecessors, (456), 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) [2023-12-20 06:58:08,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 06:58:08,032 INFO L93 Difference]: Finished difference Result 956 states and 1209 transitions. [2023-12-20 06:58:08,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 421 states. [2023-12-20 06:58:08,033 INFO L78 Accepts]: Start accepts. Automaton has has 421 states, 421 states have (on average 1.0831353919239906) internal successors, (456), 421 states have internal predecessors, (456), 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 254 [2023-12-20 06:58:08,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 06:58:08,036 INFO L225 Difference]: With dead ends: 956 [2023-12-20 06:58:08,036 INFO L226 Difference]: Without dead ends: 896 [2023-12-20 06:58:08,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 419 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108253 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=88409, Invalid=88411, Unknown=0, NotChecked=0, Total=176820 [2023-12-20 06:58:08,046 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1823 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 06:58:08,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1823 Valid, 490 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 06:58:08,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2023-12-20 06:58:08,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 506. [2023-12-20 06:58:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.005940594059406) internal successors, (508), 505 states have internal predecessors, (508), 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) [2023-12-20 06:58:08,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 508 transitions. [2023-12-20 06:58:08,061 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 508 transitions. Word has length 254 [2023-12-20 06:58:08,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 06:58:08,061 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 508 transitions. [2023-12-20 06:58:08,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 421 states, 421 states have (on average 1.0831353919239906) internal successors, (456), 421 states have internal predecessors, (456), 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) [2023-12-20 06:58:08,062 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 508 transitions. [2023-12-20 06:58:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2023-12-20 06:58:08,067 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 06:58:08,067 INFO L195 NwaCegarLoop]: trace histogram [418, 78, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 06:58:08,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 06:58:08,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-20 06:58:08,277 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 06:58:08,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 06:58:08,277 INFO L85 PathProgramCache]: Analyzing trace with hash 469354980, now seen corresponding path program 9 times [2023-12-20 06:58:08,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 06:58:08,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344335076] [2023-12-20 06:58:08,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 06:58:08,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 06:58:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 06:58:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 90652 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 87571 trivial. 0 not checked. [2023-12-20 06:58:15,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 06:58:15,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344335076] [2023-12-20 06:58:15,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344335076] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 06:58:15,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555193967] [2023-12-20 06:58:15,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-20 06:58:15,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 06:58:15,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 06:58:15,170 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) [2023-12-20 06:58:15,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process Received shutdown request... [2023-12-20 07:06:04,092 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 [2023-12-20 07:06:04,112 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 07:06:05,117 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 [2023-12-20 07:06:05,317 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forcibly destroying the process [2023-12-20 07:06:05,340 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-20 07:06:05,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-20 07:06:05,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81] total 81 [2023-12-20 07:06:05,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662897159] [2023-12-20 07:06:05,341 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-20 07:06:05,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2023-12-20 07:06:05,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 07:06:05,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2023-12-20 07:06:05,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2023-12-20 07:06:05,343 INFO L87 Difference]: Start difference. First operand 506 states and 508 transitions. Second operand has 81 states, 81 states have (on average 1.0740740740740742) internal successors, (87), 81 states have internal predecessors, (87), 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) [2023-12-20 07:06:05,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 137 [2023-12-20 07:06:05,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 07:06:05,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2023-12-20 07:06:05,350 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 [2023-12-20 07:06:05,350 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] [2023-12-20 07:06:05,351 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 07:06:05,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 07:06:05,352 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (506states) and FLOYD_HOARE automaton (currently 2 states, 81 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2023-12-20 07:06:05,355 INFO L445 BasicCegarLoop]: Path program histogram: [9, 1, 1] [2023-12-20 07:06:05,356 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 07:06:05,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 07:06:05 BoogieIcfgContainer [2023-12-20 07:06:05,358 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 07:06:05,358 INFO L158 Benchmark]: Toolchain (without parser) took 881342.51ms. Allocated memory was 296.7MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 248.7MB in the beginning and 837.4MB in the end (delta: -588.8MB). Peak memory consumption was 516.6MB. Max. memory is 8.0GB. [2023-12-20 07:06:05,358 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 07:06:05,358 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.07ms. Allocated memory is still 296.7MB. Free memory was 248.7MB in the beginning and 237.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-20 07:06:05,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.32ms. Allocated memory is still 296.7MB. Free memory was 237.8MB in the beginning and 236.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 07:06:05,359 INFO L158 Benchmark]: Boogie Preprocessor took 27.01ms. Allocated memory is still 296.7MB. Free memory was 236.1MB in the beginning and 234.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 07:06:05,359 INFO L158 Benchmark]: RCFGBuilder took 310.49ms. Allocated memory is still 296.7MB. Free memory was 234.4MB in the beginning and 222.5MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 07:06:05,359 INFO L158 Benchmark]: TraceAbstraction took 880787.54ms. Allocated memory was 296.7MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 221.8MB in the beginning and 837.4MB in the end (delta: -615.7MB). Peak memory consumption was 489.3MB. Max. memory is 8.0GB. [2023-12-20 07:06:05,360 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 191.07ms. Allocated memory is still 296.7MB. Free memory was 248.7MB in the beginning and 237.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.32ms. Allocated memory is still 296.7MB. Free memory was 237.8MB in the beginning and 236.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.01ms. Allocated memory is still 296.7MB. Free memory was 236.1MB in the beginning and 234.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 310.49ms. Allocated memory is still 296.7MB. Free memory was 234.4MB in the beginning and 222.5MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 880787.54ms. Allocated memory was 296.7MB in the beginning and 1.4GB in the end (delta: 1.1GB). Free memory was 221.8MB in the beginning and 837.4MB in the end (delta: -615.7MB). Peak memory consumption was 489.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (506states) and FLOYD_HOARE automaton (currently 2 states, 81 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 880.7s, OverallIterations: 11, TraceHistogramMax: 418, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 22.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3714 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3714 mSDsluCounter, 1184 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1110 mSDsCounter, 1552 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2064 IncrementalHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1552 mSolverCounterUnsat, 74 mSDtfsCounter, 2064 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1492 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 884 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134209 ImplicationChecksByTransitivity, 26.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=506occurred in iteration=10, InterpolantAutomatonStates: 823, 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, 10 MinimizatonAttempts, 1087 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 348.6s SatisfiabilityAnalysisTime, 36.4s InterpolantComputationTime, 1780 NumberOfCodeBlocks, 1730 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 2377 ConstructedInterpolants, 0 QuantifiedInterpolants, 4273 SizeOfPredicates, 0 NumberOfNonLiveVariables, 5175 ConjunctsInSsa, 368 ConjunctsInUnsatCore, 28 InterpolantComputations, 2 PerfectInterpolantSequences, 125420/177360 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