./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb960067570884de0638f14e8f74b0912d9ff4ed83f9c3c33e6cd3e420d05661 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 15:26:54,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 15:26:54,084 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 15:26:54,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 15:26:54,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 15:26:54,123 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 15:26:54,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 15:26:54,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 15:26:54,126 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 15:26:54,128 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 15:26:54,128 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 15:26:54,128 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 15:26:54,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 15:26:54,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 15:26:54,132 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 15:26:54,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 15:26:54,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 15:26:54,133 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 15:26:54,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 15:26:54,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 15:26:54,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 15:26:54,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 15:26:54,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 15:26:54,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 15:26:54,136 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 15:26:54,136 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 15:26:54,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 15:26:54,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 15:26:54,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 15:26:54,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 15:26:54,138 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 15:26:54,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 15:26:54,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:26:54,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 15:26:54,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 15:26:54,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 15:26:54,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 15:26:54,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 15:26:54,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 15:26:54,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 15:26:54,141 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 15:26:54,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 15:26:54,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb960067570884de0638f14e8f74b0912d9ff4ed83f9c3c33e6cd3e420d05661 [2024-11-11 15:26:54,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 15:26:54,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 15:26:54,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 15:26:54,417 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 15:26:54,417 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 15:26:54,419 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i [2024-11-11 15:26:55,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 15:26:56,128 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 15:26:56,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i [2024-11-11 15:26:56,138 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ba3c8459/c010fe84bb4b4376ad037cceef4f04d9/FLAG45339b383 [2024-11-11 15:26:56,494 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ba3c8459/c010fe84bb4b4376ad037cceef4f04d9 [2024-11-11 15:26:56,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 15:26:56,498 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 15:26:56,499 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 15:26:56,499 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 15:26:56,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 15:26:56,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b12258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56, skipping insertion in model container [2024-11-11 15:26:56,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,529 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 15:26:56,724 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i[814,827] [2024-11-11 15:26:56,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:26:56,763 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 15:26:56,774 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i[814,827] [2024-11-11 15:26:56,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 15:26:56,797 INFO L204 MainTranslator]: Completed translation [2024-11-11 15:26:56,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56 WrapperNode [2024-11-11 15:26:56,798 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 15:26:56,799 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 15:26:56,799 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 15:26:56,799 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 15:26:56,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,832 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2024-11-11 15:26:56,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 15:26:56,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 15:26:56,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 15:26:56,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 15:26:56,840 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,853 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-11 15:26:56,854 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,858 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 15:26:56,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 15:26:56,865 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 15:26:56,865 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 15:26:56,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56" (1/1) ... [2024-11-11 15:26:56,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 15:26:56,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:26:56,898 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) [2024-11-11 15:26:56,900 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 [2024-11-11 15:26:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 15:26:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 15:26:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 15:26:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 15:26:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 15:26:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 15:26:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 15:26:56,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 15:26:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 15:26:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 15:26:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 15:26:57,009 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 15:26:57,011 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 15:26:57,145 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-11 15:26:57,146 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 15:26:57,156 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 15:26:57,156 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-11 15:26:57,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:26:57 BoogieIcfgContainer [2024-11-11 15:26:57,157 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 15:26:57,159 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 15:26:57,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 15:26:57,161 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 15:26:57,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 03:26:56" (1/3) ... [2024-11-11 15:26:57,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3561141b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:26:57, skipping insertion in model container [2024-11-11 15:26:57,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 03:26:56" (2/3) ... [2024-11-11 15:26:57,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3561141b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 03:26:57, skipping insertion in model container [2024-11-11 15:26:57,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 03:26:57" (3/3) ... [2024-11-11 15:26:57,164 INFO L112 eAbstractionObserver]: Analyzing ICFG array_assert_loop_dep.i [2024-11-11 15:26:57,176 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 15:26:57,177 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 15:26:57,225 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 15:26:57,233 INFO L333 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, 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;@72a8e31f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 15:26:57,234 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 15:26:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 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) [2024-11-11 15:26:57,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-11 15:26:57,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:26:57,244 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:26:57,244 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:26:57,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:26:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1807957391, now seen corresponding path program 1 times [2024-11-11 15:26:57,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:26:57,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147026581] [2024-11-11 15:26:57,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:26:57,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:26:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:26:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:26:57,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:26:57,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147026581] [2024-11-11 15:26:57,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147026581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 15:26:57,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 15:26:57,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 15:26:57,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631717695] [2024-11-11 15:26:57,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 15:26:57,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 15:26:57,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:26:57,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 15:26:57,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 15:26:57,542 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 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) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-11 15:26:57,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:26:57,593 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2024-11-11 15:26:57,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 15:26:57,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-11-11 15:26:57,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:26:57,606 INFO L225 Difference]: With dead ends: 37 [2024-11-11 15:26:57,606 INFO L226 Difference]: Without dead ends: 21 [2024-11-11 15:26:57,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 15:26:57,612 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 15:26:57,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 20 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 15:26:57,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-11 15:26:57,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2024-11-11 15:26:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:26:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-11 15:26:57,639 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 7 [2024-11-11 15:26:57,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:26:57,639 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-11 15:26:57,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-11 15:26:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-11 15:26:57,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-11 15:26:57,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:26:57,640 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:26:57,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 15:26:57,641 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:26:57,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:26:57,642 INFO L85 PathProgramCache]: Analyzing trace with hash -369319347, now seen corresponding path program 1 times [2024-11-11 15:26:57,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:26:57,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237867518] [2024-11-11 15:26:57,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:26:57,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:26:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:26:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:26:57,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:26:57,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237867518] [2024-11-11 15:26:57,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237867518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:26:57,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018358987] [2024-11-11 15:26:57,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:26:57,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:26:57,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:26:57,730 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) [2024-11-11 15:26:57,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 15:26:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:26:57,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 15:26:57,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:26:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:26:57,906 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:26:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:26:57,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018358987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:26:57,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:26:57,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-11 15:26:57,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119690042] [2024-11-11 15:26:57,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:26:57,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 15:26:57,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:26:57,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 15:26:57,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-11 15:26:57,952 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2024-11-11 15:26:58,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:26:58,048 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2024-11-11 15:26:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-11 15:26:58,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 [2024-11-11 15:26:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:26:58,050 INFO L225 Difference]: With dead ends: 53 [2024-11-11 15:26:58,051 INFO L226 Difference]: Without dead ends: 41 [2024-11-11 15:26:58,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-11 15:26:58,053 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 39 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:26:58,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 23 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:26:58,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-11 15:26:58,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2024-11-11 15:26:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:26:58,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-11 15:26:58,067 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 9 [2024-11-11 15:26:58,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:26:58,068 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-11 15:26:58,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2024-11-11 15:26:58,068 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-11 15:26:58,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-11 15:26:58,070 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:26:58,070 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:26:58,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 15:26:58,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:26:58,275 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:26:58,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:26:58,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1716192135, now seen corresponding path program 2 times [2024-11-11 15:26:58,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:26:58,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111843163] [2024-11-11 15:26:58,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:26:58,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:26:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:26:58,442 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:26:58,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:26:58,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111843163] [2024-11-11 15:26:58,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111843163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:26:58,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126714292] [2024-11-11 15:26:58,443 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 15:26:58,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:26:58,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:26:58,445 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) [2024-11-11 15:26:58,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 15:26:58,501 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 15:26:58,505 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:26:58,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-11 15:26:58,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:26:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:26:58,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:26:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:26:58,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126714292] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:26:58,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:26:58,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-11 15:26:58,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724628942] [2024-11-11 15:26:58,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:26:58,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-11 15:26:58,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:26:58,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-11 15:26:58,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-11 15:26:58,611 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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) [2024-11-11 15:26:58,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:26:58,735 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2024-11-11 15:26:58,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-11 15:26:58,736 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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) Word has length 15 [2024-11-11 15:26:58,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:26:58,739 INFO L225 Difference]: With dead ends: 112 [2024-11-11 15:26:58,739 INFO L226 Difference]: Without dead ends: 95 [2024-11-11 15:26:58,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-11 15:26:58,741 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 143 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 15:26:58,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 50 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 15:26:58,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-11 15:26:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 55. [2024-11-11 15:26:58,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 54 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:26:58,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2024-11-11 15:26:58,758 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 15 [2024-11-11 15:26:58,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:26:58,758 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2024-11-11 15:26:58,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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) [2024-11-11 15:26:58,759 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2024-11-11 15:26:58,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-11 15:26:58,759 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:26:58,759 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:26:58,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-11 15:26:58,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-11 15:26:58,961 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:26:58,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:26:58,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1328180091, now seen corresponding path program 3 times [2024-11-11 15:26:58,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:26:58,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314885214] [2024-11-11 15:26:58,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:26:58,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:26:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:26:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:26:59,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:26:59,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314885214] [2024-11-11 15:26:59,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314885214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:26:59,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568648133] [2024-11-11 15:26:59,303 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 15:26:59,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:26:59,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:26:59,306 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) [2024-11-11 15:26:59,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 15:26:59,388 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-11 15:26:59,388 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:26:59,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-11 15:26:59,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:26:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:26:59,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:26:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:26:59,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568648133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:26:59,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:26:59,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-11 15:26:59,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309204083] [2024-11-11 15:26:59,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:26:59,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-11 15:26:59,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:26:59,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-11 15:26:59,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-11 15:26:59,733 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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) [2024-11-11 15:26:59,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:26:59,988 INFO L93 Difference]: Finished difference Result 235 states and 271 transitions. [2024-11-11 15:26:59,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-11 15:26:59,989 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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 27 [2024-11-11 15:26:59,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:26:59,991 INFO L225 Difference]: With dead ends: 235 [2024-11-11 15:26:59,992 INFO L226 Difference]: Without dead ends: 203 [2024-11-11 15:26:59,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-11 15:26:59,995 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 327 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 15:26:59,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 98 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 15:26:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-11 15:27:00,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 109. [2024-11-11 15:27:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.1296296296296295) internal successors, (122), 108 states have internal predecessors, (122), 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) [2024-11-11 15:27:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2024-11-11 15:27:00,017 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 27 [2024-11-11 15:27:00,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:27:00,018 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2024-11-11 15:27:00,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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) [2024-11-11 15:27:00,018 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2024-11-11 15:27:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-11 15:27:00,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:27:00,020 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:27:00,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 15:27:00,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:27:00,222 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:27:00,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:27:00,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1458393443, now seen corresponding path program 4 times [2024-11-11 15:27:00,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:27:00,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947319230] [2024-11-11 15:27:00,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:27:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:27:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:27:00,858 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:27:00,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:27:00,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947319230] [2024-11-11 15:27:00,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947319230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:27:00,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495757150] [2024-11-11 15:27:00,859 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 15:27:00,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:27:00,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:27:00,861 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) [2024-11-11 15:27:00,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 15:27:00,951 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 15:27:00,952 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:27:00,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-11 15:27:00,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:27:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:27:01,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:27:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:27:01,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495757150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:27:01,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:27:01,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-11 15:27:01,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924188132] [2024-11-11 15:27:01,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:27:01,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-11 15:27:01,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:27:01,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-11 15:27:01,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-11 15:27:01,904 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 49 states have internal predecessors, (100), 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) [2024-11-11 15:27:02,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:27:02,499 INFO L93 Difference]: Finished difference Result 481 states and 553 transitions. [2024-11-11 15:27:02,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-11 15:27:02,500 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 49 states have internal predecessors, (100), 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 51 [2024-11-11 15:27:02,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:27:02,503 INFO L225 Difference]: With dead ends: 481 [2024-11-11 15:27:02,504 INFO L226 Difference]: Without dead ends: 419 [2024-11-11 15:27:02,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-11 15:27:02,507 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 853 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 15:27:02,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 199 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 15:27:02,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-11-11 15:27:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 217. [2024-11-11 15:27:02,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.1203703703703705) internal successors, (242), 216 states have internal predecessors, (242), 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) [2024-11-11 15:27:02,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 242 transitions. [2024-11-11 15:27:02,534 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 242 transitions. Word has length 51 [2024-11-11 15:27:02,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:27:02,534 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 242 transitions. [2024-11-11 15:27:02,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0408163265306123) internal successors, (100), 49 states have internal predecessors, (100), 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) [2024-11-11 15:27:02,535 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 242 transitions. [2024-11-11 15:27:02,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-11 15:27:02,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:27:02,537 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:27:02,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-11 15:27:02,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:27:02,738 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:27:02,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:27:02,738 INFO L85 PathProgramCache]: Analyzing trace with hash 546272563, now seen corresponding path program 5 times [2024-11-11 15:27:02,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:27:02,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68446686] [2024-11-11 15:27:02,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:27:02,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:27:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:27:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:27:04,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:27:04,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68446686] [2024-11-11 15:27:04,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68446686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:27:04,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558116607] [2024-11-11 15:27:04,596 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 15:27:04,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:27:04,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:27:04,598 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) [2024-11-11 15:27:04,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 15:27:36,882 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-11 15:27:36,883 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 15:27:36,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-11 15:27:36,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 15:27:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:27:37,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 15:27:39,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:27:39,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558116607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 15:27:39,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 15:27:39,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-11 15:27:39,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870710467] [2024-11-11 15:27:39,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 15:27:39,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-11 15:27:39,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 15:27:39,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-11 15:27:39,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-11 15:27:39,506 INFO L87 Difference]: Start difference. First operand 217 states and 242 transitions. Second operand has 97 states, 97 states have (on average 2.020618556701031) internal successors, (196), 97 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:27:41,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 15:27:41,890 INFO L93 Difference]: Finished difference Result 973 states and 1117 transitions. [2024-11-11 15:27:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-11 15:27:41,891 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.020618556701031) internal successors, (196), 97 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-11 15:27:41,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 15:27:41,896 INFO L225 Difference]: With dead ends: 973 [2024-11-11 15:27:41,896 INFO L226 Difference]: Without dead ends: 851 [2024-11-11 15:27:41,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-11 15:27:41,899 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 3005 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3005 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 15:27:41,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3005 Valid, 384 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 15:27:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2024-11-11 15:27:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 433. [2024-11-11 15:27:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.1157407407407407) internal successors, (482), 432 states have internal predecessors, (482), 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) [2024-11-11 15:27:41,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 482 transitions. [2024-11-11 15:27:41,929 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 482 transitions. Word has length 99 [2024-11-11 15:27:41,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 15:27:41,929 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 482 transitions. [2024-11-11 15:27:41,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.020618556701031) internal successors, (196), 97 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 15:27:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 482 transitions. [2024-11-11 15:27:41,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-11 15:27:41,933 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 15:27:41,933 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 15:27:41,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 15:27:42,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:27:42,134 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 15:27:42,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 15:27:42,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1352998099, now seen corresponding path program 6 times [2024-11-11 15:27:42,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 15:27:42,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633704320] [2024-11-11 15:27:42,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 15:27:42,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 15:27:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 15:27:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 15:27:47,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 15:27:47,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633704320] [2024-11-11 15:27:47,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633704320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 15:27:47,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460455357] [2024-11-11 15:27:47,541 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 15:27:47,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 15:27:47,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 15:27:47,543 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) [2024-11-11 15:27:47,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process