./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label25.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/eca-rers2012/Problem14_label25.c -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 af25e83b6858fff60f7d1f210bf28c8f4df9d888273dfb197f604bfc8ae9e1a1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:37:50,535 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:37:50,622 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:37:50,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:37:50,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:37:50,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:37:50,652 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:37:50,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:37:50,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:37:50,655 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:37:50,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:37:50,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:37:50,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:37:50,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:37:50,657 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:37:50,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:37:50,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:37:50,659 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:37:50,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:37:50,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:37:50,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:37:50,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:37:50,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:37:50,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:37:50,663 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:37:50,663 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:37:50,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:37:50,664 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:37:50,664 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:37:50,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:37:50,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:37:50,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:37:50,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:37:50,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:37:50,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:37:50,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:37:50,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:37:50,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:37:50,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:37:50,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:37:50,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:37:50,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:37:50,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af25e83b6858fff60f7d1f210bf28c8f4df9d888273dfb197f604bfc8ae9e1a1 [2024-11-09 19:37:50,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:37:50,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:37:50,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:37:50,944 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:37:50,945 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:37:50,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label25.c [2024-11-09 19:37:52,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:37:52,673 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:37:52,674 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label25.c [2024-11-09 19:37:52,687 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac939b869/45191291cf434d008a4b4da1c1848479/FLAGee93f59bb [2024-11-09 19:37:52,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac939b869/45191291cf434d008a4b4da1c1848479 [2024-11-09 19:37:52,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:37:52,714 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:37:52,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:37:52,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:37:52,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:37:52,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:37:52" (1/1) ... [2024-11-09 19:37:52,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53bfc457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:52, skipping insertion in model container [2024-11-09 19:37:52,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:37:52" (1/1) ... [2024-11-09 19:37:52,767 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:37:53,012 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/eca-rers2012/Problem14_label25.c[6534,6547] [2024-11-09 19:37:53,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:37:53,210 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:37:53,263 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/eca-rers2012/Problem14_label25.c[6534,6547] [2024-11-09 19:37:53,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:37:53,370 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:37:53,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53 WrapperNode [2024-11-09 19:37:53,371 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:37:53,372 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:37:53,372 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:37:53,372 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:37:53,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53" (1/1) ... [2024-11-09 19:37:53,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53" (1/1) ... [2024-11-09 19:37:53,468 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2024-11-09 19:37:53,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:37:53,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:37:53,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:37:53,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:37:53,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53" (1/1) ... [2024-11-09 19:37:53,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53" (1/1) ... [2024-11-09 19:37:53,496 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53" (1/1) ... [2024-11-09 19:37:53,542 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 19:37:53,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53" (1/1) ... [2024-11-09 19:37:53,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53" (1/1) ... [2024-11-09 19:37:53,568 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53" (1/1) ... [2024-11-09 19:37:53,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53" (1/1) ... [2024-11-09 19:37:53,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53" (1/1) ... [2024-11-09 19:37:53,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53" (1/1) ... [2024-11-09 19:37:53,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:37:53,599 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:37:53,599 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:37:53,600 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:37:53,600 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53" (1/1) ... [2024-11-09 19:37:53,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:37:53,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:37:53,638 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) [2024-11-09 19:37:53,641 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 [2024-11-09 19:37:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:37:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:37:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:37:53,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:37:53,763 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:37:53,765 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:37:55,147 INFO L? ?]: Removed 236 outVars from TransFormulas that were not future-live. [2024-11-09 19:37:55,148 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:37:55,172 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:37:55,173 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:37:55,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:37:55 BoogieIcfgContainer [2024-11-09 19:37:55,173 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:37:55,175 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:37:55,175 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:37:55,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:37:55,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:37:52" (1/3) ... [2024-11-09 19:37:55,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535bcd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:37:55, skipping insertion in model container [2024-11-09 19:37:55,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:37:53" (2/3) ... [2024-11-09 19:37:55,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535bcd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:37:55, skipping insertion in model container [2024-11-09 19:37:55,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:37:55" (3/3) ... [2024-11-09 19:37:55,183 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label25.c [2024-11-09 19:37:55,199 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:37:55,200 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:37:55,277 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:37:55,286 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;@37fe0a3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:37:55,286 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:37:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 246 states have (on average 2.186991869918699) internal successors, (538), 247 states have internal predecessors, (538), 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) [2024-11-09 19:37:55,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 19:37:55,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:37:55,305 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:37:55,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:37:55,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:37:55,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1972979231, now seen corresponding path program 1 times [2024-11-09 19:37:55,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:37:55,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109647475] [2024-11-09 19:37:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:37:55,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:37:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:37:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:37:55,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:37:55,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109647475] [2024-11-09 19:37:55,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109647475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:37:55,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:37:55,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:37:55,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619092350] [2024-11-09 19:37:55,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:37:55,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:37:55,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:37:55,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:37:55,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:37:55,941 INFO L87 Difference]: Start difference. First operand has 248 states, 246 states have (on average 2.186991869918699) internal successors, (538), 247 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-09 19:37:57,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:37:57,809 INFO L93 Difference]: Finished difference Result 859 states and 2019 transitions. [2024-11-09 19:37:57,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:37:57,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2024-11-09 19:37:57,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:37:57,827 INFO L225 Difference]: With dead ends: 859 [2024-11-09 19:37:57,828 INFO L226 Difference]: Without dead ends: 542 [2024-11-09 19:37:57,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:37:57,834 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 888 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:37:57,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 50 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 19:37:57,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-09 19:37:57,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2024-11-09 19:37:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 2.0720887245841033) internal successors, (1121), 541 states have internal predecessors, (1121), 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) [2024-11-09 19:37:57,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1121 transitions. [2024-11-09 19:37:57,909 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1121 transitions. Word has length 66 [2024-11-09 19:37:57,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:37:57,910 INFO L471 AbstractCegarLoop]: Abstraction has 542 states and 1121 transitions. [2024-11-09 19:37:57,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-09 19:37:57,911 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1121 transitions. [2024-11-09 19:37:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-09 19:37:57,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:37:57,926 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:37:57,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:37:57,927 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:37:57,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:37:57,928 INFO L85 PathProgramCache]: Analyzing trace with hash 520569941, now seen corresponding path program 1 times [2024-11-09 19:37:57,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:37:57,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436172399] [2024-11-09 19:37:57,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:37:57,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:37:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:37:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 19:37:58,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:37:58,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436172399] [2024-11-09 19:37:58,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436172399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:37:58,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:37:58,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:37:58,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556976767] [2024-11-09 19:37:58,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:37:58,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:37:58,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:37:58,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:37:58,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:37:58,241 INFO L87 Difference]: Start difference. First operand 542 states and 1121 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 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) [2024-11-09 19:37:59,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:37:59,122 INFO L93 Difference]: Finished difference Result 1082 states and 2342 transitions. [2024-11-09 19:37:59,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:37:59,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 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 204 [2024-11-09 19:37:59,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:37:59,129 INFO L225 Difference]: With dead ends: 1082 [2024-11-09 19:37:59,130 INFO L226 Difference]: Without dead ends: 721 [2024-11-09 19:37:59,131 INFO L431 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 [2024-11-09 19:37:59,132 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 239 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:37:59,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 60 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:37:59,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-11-09 19:37:59,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2024-11-09 19:37:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 1.9791666666666667) internal successors, (1425), 720 states have internal predecessors, (1425), 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) [2024-11-09 19:37:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1425 transitions. [2024-11-09 19:37:59,161 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1425 transitions. Word has length 204 [2024-11-09 19:37:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:37:59,162 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1425 transitions. [2024-11-09 19:37:59,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 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) [2024-11-09 19:37:59,162 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1425 transitions. [2024-11-09 19:37:59,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-09 19:37:59,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:37:59,165 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:37:59,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:37:59,166 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:37:59,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:37:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1737845389, now seen corresponding path program 1 times [2024-11-09 19:37:59,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:37:59,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053735580] [2024-11-09 19:37:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:37:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:37:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:37:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 19:37:59,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:37:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053735580] [2024-11-09 19:37:59,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053735580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:37:59,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:37:59,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:37:59,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271290928] [2024-11-09 19:37:59,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:37:59,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:37:59,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:37:59,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:37:59,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:37:59,512 INFO L87 Difference]: Start difference. First operand 721 states and 1425 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 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) [2024-11-09 19:38:00,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:00,472 INFO L93 Difference]: Finished difference Result 1470 states and 2938 transitions. [2024-11-09 19:38:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:38:00,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 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 227 [2024-11-09 19:38:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:00,477 INFO L225 Difference]: With dead ends: 1470 [2024-11-09 19:38:00,477 INFO L226 Difference]: Without dead ends: 900 [2024-11-09 19:38:00,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:38:00,479 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 214 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:00,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 121 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 19:38:00,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2024-11-09 19:38:00,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 900. [2024-11-09 19:38:00,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 899 states have (on average 1.799777530589544) internal successors, (1618), 899 states have internal predecessors, (1618), 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) [2024-11-09 19:38:00,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1618 transitions. [2024-11-09 19:38:00,500 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1618 transitions. Word has length 227 [2024-11-09 19:38:00,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:00,501 INFO L471 AbstractCegarLoop]: Abstraction has 900 states and 1618 transitions. [2024-11-09 19:38:00,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 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) [2024-11-09 19:38:00,502 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1618 transitions. [2024-11-09 19:38:00,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-09 19:38:00,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:00,507 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:00,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:38:00,508 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:00,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:00,508 INFO L85 PathProgramCache]: Analyzing trace with hash -47362813, now seen corresponding path program 1 times [2024-11-09 19:38:00,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:00,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248082782] [2024-11-09 19:38:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:00,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 320 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:38:01,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:01,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248082782] [2024-11-09 19:38:01,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248082782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:01,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369827921] [2024-11-09 19:38:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:01,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:01,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:01,224 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) [2024-11-09 19:38:01,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:38:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:01,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:38:01,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-09 19:38:01,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:01,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369827921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:01,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:01,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-09 19:38:01,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978269622] [2024-11-09 19:38:01,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:01,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:01,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:01,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:01,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:01,544 INFO L87 Difference]: Start difference. First operand 900 states and 1618 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2024-11-09 19:38:02,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:02,308 INFO L93 Difference]: Finished difference Result 2335 states and 4262 transitions. [2024-11-09 19:38:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:02,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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 359 [2024-11-09 19:38:02,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:02,316 INFO L225 Difference]: With dead ends: 2335 [2024-11-09 19:38:02,316 INFO L226 Difference]: Without dead ends: 1616 [2024-11-09 19:38:02,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:38:02,319 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 230 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:02,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 380 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:38:02,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2024-11-09 19:38:02,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1437. [2024-11-09 19:38:02,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 1.7764623955431755) internal successors, (2551), 1436 states have internal predecessors, (2551), 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) [2024-11-09 19:38:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2551 transitions. [2024-11-09 19:38:02,349 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2551 transitions. Word has length 359 [2024-11-09 19:38:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:02,350 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 2551 transitions. [2024-11-09 19:38:02,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 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) [2024-11-09 19:38:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2551 transitions. [2024-11-09 19:38:02,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-09 19:38:02,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:02,359 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:02,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:38:02,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:02,560 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:02,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:02,561 INFO L85 PathProgramCache]: Analyzing trace with hash -941259549, now seen corresponding path program 1 times [2024-11-09 19:38:02,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:02,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761348204] [2024-11-09 19:38:02,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:02,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 612 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-09 19:38:03,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:03,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761348204] [2024-11-09 19:38:03,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761348204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:03,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:38:03,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:38:03,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073045711] [2024-11-09 19:38:03,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:03,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:03,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:03,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:38:03,076 INFO L87 Difference]: Start difference. First operand 1437 states and 2551 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2024-11-09 19:38:03,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:03,894 INFO L93 Difference]: Finished difference Result 3051 states and 5503 transitions. [2024-11-09 19:38:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:03,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 459 [2024-11-09 19:38:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:03,904 INFO L225 Difference]: With dead ends: 3051 [2024-11-09 19:38:03,905 INFO L226 Difference]: Without dead ends: 1795 [2024-11-09 19:38:03,907 INFO L431 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 [2024-11-09 19:38:03,908 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 187 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:03,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 79 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 19:38:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2024-11-09 19:38:03,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1795. [2024-11-09 19:38:03,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 1.7692307692307692) internal successors, (3174), 1794 states have internal predecessors, (3174), 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) [2024-11-09 19:38:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 3174 transitions. [2024-11-09 19:38:03,948 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 3174 transitions. Word has length 459 [2024-11-09 19:38:03,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:03,949 INFO L471 AbstractCegarLoop]: Abstraction has 1795 states and 3174 transitions. [2024-11-09 19:38:03,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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) [2024-11-09 19:38:03,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 3174 transitions. [2024-11-09 19:38:03,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2024-11-09 19:38:03,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:03,954 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:03,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:38:03,954 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:03,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1917583461, now seen corresponding path program 1 times [2024-11-09 19:38:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:03,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438153021] [2024-11-09 19:38:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 564 proven. 23 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-11-09 19:38:04,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:04,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438153021] [2024-11-09 19:38:04,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438153021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:04,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057635679] [2024-11-09 19:38:04,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:04,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:04,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:04,505 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) [2024-11-09 19:38:04,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:38:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:04,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:38:04,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2024-11-09 19:38:04,807 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:04,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057635679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:04,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:04,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:38:04,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564043927] [2024-11-09 19:38:04,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:04,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:04,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:04,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:04,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:04,810 INFO L87 Difference]: Start difference. First operand 1795 states and 3174 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2024-11-09 19:38:05,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:05,596 INFO L93 Difference]: Finished difference Result 4125 states and 7374 transitions. [2024-11-09 19:38:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:05,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 483 [2024-11-09 19:38:05,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:05,606 INFO L225 Difference]: With dead ends: 4125 [2024-11-09 19:38:05,607 INFO L226 Difference]: Without dead ends: 2511 [2024-11-09 19:38:05,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:05,610 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 230 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:05,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 383 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:38:05,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2024-11-09 19:38:05,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2332. [2024-11-09 19:38:05,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2332 states, 2331 states have (on average 1.7571857571857572) internal successors, (4096), 2331 states have internal predecessors, (4096), 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) [2024-11-09 19:38:05,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 4096 transitions. [2024-11-09 19:38:05,656 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 4096 transitions. Word has length 483 [2024-11-09 19:38:05,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:05,657 INFO L471 AbstractCegarLoop]: Abstraction has 2332 states and 4096 transitions. [2024-11-09 19:38:05,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2024-11-09 19:38:05,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 4096 transitions. [2024-11-09 19:38:05,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2024-11-09 19:38:05,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:05,666 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:05,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 19:38:05,867 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,SelfDestructingSolverStorable5 [2024-11-09 19:38:05,868 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:05,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:05,868 INFO L85 PathProgramCache]: Analyzing trace with hash -482542455, now seen corresponding path program 1 times [2024-11-09 19:38:05,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:05,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844630021] [2024-11-09 19:38:05,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:05,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 576 proven. 23 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-11-09 19:38:06,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:06,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844630021] [2024-11-09 19:38:06,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844630021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:06,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338549393] [2024-11-09 19:38:06,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:06,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:06,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:06,478 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) [2024-11-09 19:38:06,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:38:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:06,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:38:06,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 802 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2024-11-09 19:38:06,756 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:06,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338549393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:06,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:06,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:38:06,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972375354] [2024-11-09 19:38:06,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:06,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:06,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:06,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:06,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:06,759 INFO L87 Difference]: Start difference. First operand 2332 states and 4096 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2024-11-09 19:38:07,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:07,397 INFO L93 Difference]: Finished difference Result 5020 states and 8923 transitions. [2024-11-09 19:38:07,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:07,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 489 [2024-11-09 19:38:07,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:07,409 INFO L225 Difference]: With dead ends: 5020 [2024-11-09 19:38:07,409 INFO L226 Difference]: Without dead ends: 2869 [2024-11-09 19:38:07,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:07,412 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 233 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:07,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 330 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 19:38:07,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2024-11-09 19:38:07,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2511. [2024-11-09 19:38:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2510 states have (on average 1.7800796812749005) internal successors, (4468), 2510 states have internal predecessors, (4468), 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) [2024-11-09 19:38:07,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 4468 transitions. [2024-11-09 19:38:07,460 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 4468 transitions. Word has length 489 [2024-11-09 19:38:07,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:07,461 INFO L471 AbstractCegarLoop]: Abstraction has 2511 states and 4468 transitions. [2024-11-09 19:38:07,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2024-11-09 19:38:07,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 4468 transitions. [2024-11-09 19:38:07,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2024-11-09 19:38:07,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:38:07,467 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:07,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:38:07,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:07,669 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:38:07,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:38:07,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1299723819, now seen corresponding path program 1 times [2024-11-09 19:38:07,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:38:07,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046546471] [2024-11-09 19:38:07,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:07,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:38:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 622 proven. 23 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-09 19:38:08,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:38:08,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046546471] [2024-11-09 19:38:08,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046546471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:38:08,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616178003] [2024-11-09 19:38:08,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:38:08,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:08,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:38:08,289 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) [2024-11-09 19:38:08,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 19:38:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:38:08,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:38:08,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:38:08,559 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2024-11-09 19:38:08,560 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:38:08,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616178003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:38:08,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:38:08,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:38:08,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605591107] [2024-11-09 19:38:08,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:38:08,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:38:08,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:38:08,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:38:08,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:08,562 INFO L87 Difference]: Start difference. First operand 2511 states and 4468 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2024-11-09 19:38:09,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:38:09,276 INFO L93 Difference]: Finished difference Result 6091 states and 10905 transitions. [2024-11-09 19:38:09,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:38:09,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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 521 [2024-11-09 19:38:09,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:38:09,279 INFO L225 Difference]: With dead ends: 6091 [2024-11-09 19:38:09,279 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 19:38:09,286 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:38:09,287 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 240 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:38:09,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 342 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 19:38:09,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 19:38:09,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 19:38:09,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-09 19:38:09,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 19:38:09,290 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 521 [2024-11-09 19:38:09,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:38:09,290 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 19:38:09,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 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) [2024-11-09 19:38:09,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 19:38:09,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 19:38:09,293 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 19:38:09,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 19:38:09,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:38:09,498 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:38:09,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 19:38:09,553 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 19:38:09,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 07:38:09 BoogieIcfgContainer [2024-11-09 19:38:09,565 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 19:38:09,565 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 19:38:09,565 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 19:38:09,566 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 19:38:09,567 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:37:55" (3/4) ... [2024-11-09 19:38:09,569 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-09 19:38:09,596 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-09 19:38:09,598 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-09 19:38:09,599 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 19:38:09,600 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 19:38:09,753 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 19:38:09,753 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 19:38:09,753 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 19:38:09,754 INFO L158 Benchmark]: Toolchain (without parser) took 17040.19ms. Allocated memory was 144.7MB in the beginning and 400.6MB in the end (delta: 255.9MB). Free memory was 85.2MB in the beginning and 149.7MB in the end (delta: -64.5MB). Peak memory consumption was 193.1MB. Max. memory is 16.1GB. [2024-11-09 19:38:09,755 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 144.7MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 19:38:09,755 INFO L158 Benchmark]: CACSL2BoogieTranslator took 656.08ms. Allocated memory was 144.7MB in the beginning and 199.2MB in the end (delta: 54.5MB). Free memory was 85.2MB in the beginning and 160.0MB in the end (delta: -74.8MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2024-11-09 19:38:09,755 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.91ms. Allocated memory is still 199.2MB. Free memory was 160.0MB in the beginning and 150.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 19:38:09,755 INFO L158 Benchmark]: Boogie Preprocessor took 128.80ms. Allocated memory is still 199.2MB. Free memory was 150.7MB in the beginning and 139.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 19:38:09,756 INFO L158 Benchmark]: IcfgBuilder took 1573.99ms. Allocated memory is still 199.2MB. Free memory was 139.2MB in the beginning and 97.5MB in the end (delta: 41.7MB). Peak memory consumption was 96.5MB. Max. memory is 16.1GB. [2024-11-09 19:38:09,756 INFO L158 Benchmark]: TraceAbstraction took 14389.76ms. Allocated memory was 199.2MB in the beginning and 400.6MB in the end (delta: 201.3MB). Free memory was 97.5MB in the beginning and 166.5MB in the end (delta: -69.0MB). Peak memory consumption was 135.5MB. Max. memory is 16.1GB. [2024-11-09 19:38:09,756 INFO L158 Benchmark]: Witness Printer took 187.98ms. Allocated memory is still 400.6MB. Free memory was 166.5MB in the beginning and 149.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 19:38:09,758 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 144.7MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 656.08ms. Allocated memory was 144.7MB in the beginning and 199.2MB in the end (delta: 54.5MB). Free memory was 85.2MB in the beginning and 160.0MB in the end (delta: -74.8MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.91ms. Allocated memory is still 199.2MB. Free memory was 160.0MB in the beginning and 150.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 128.80ms. Allocated memory is still 199.2MB. Free memory was 150.7MB in the beginning and 139.2MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * IcfgBuilder took 1573.99ms. Allocated memory is still 199.2MB. Free memory was 139.2MB in the beginning and 97.5MB in the end (delta: 41.7MB). Peak memory consumption was 96.5MB. Max. memory is 16.1GB. * TraceAbstraction took 14389.76ms. Allocated memory was 199.2MB in the beginning and 400.6MB in the end (delta: 201.3MB). Free memory was 97.5MB in the beginning and 166.5MB in the end (delta: -69.0MB). Peak memory consumption was 135.5MB. Max. memory is 16.1GB. * Witness Printer took 187.98ms. Allocated memory is still 400.6MB. Free memory was 166.5MB in the beginning and 149.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * 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 - PositiveResult [Line: 206]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 248 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.2s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2461 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2461 mSDsluCounter, 1745 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 1038 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6354 IncrementalHoareTripleChecker+Invalid, 7392 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1038 mSolverCounterUnsat, 1680 mSDtfsCounter, 6354 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1877 GetRequests, 1853 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2511occurred in iteration=7, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 716 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 4660 NumberOfCodeBlocks, 4660 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 4648 ConstructedInterpolants, 0 QuantifiedInterpolants, 16641 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2371 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 6774/6975 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 890]: Location Invariant Derived location invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-09 19:38:09,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE