./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 02:03:16,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 02:03:16,939 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 02:03:16,946 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 02:03:16,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 02:03:16,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 02:03:16,970 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 02:03:16,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 02:03:16,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 02:03:16,973 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 02:03:16,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 02:03:16,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 02:03:16,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 02:03:16,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 02:03:16,979 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 02:03:16,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 02:03:16,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 02:03:16,980 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 02:03:16,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 02:03:16,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 02:03:16,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 02:03:16,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 02:03:16,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 02:03:16,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 02:03:16,983 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 02:03:16,984 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 02:03:16,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 02:03:16,984 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 02:03:16,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 02:03:16,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 02:03:16,985 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 02:03:16,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 02:03:16,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 02:03:16,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 02:03:16,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 02:03:16,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 02:03:16,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 02:03:16,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 02:03:16,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 02:03:16,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 02:03:16,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 02:03:16,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 02:03:16,989 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a340dc1e9a375ad2082e9c8cecf3a1a681edcfe0f7220085504fa1991ced3d70 [2024-10-11 02:03:17,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 02:03:17,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 02:03:17,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 02:03:17,339 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 02:03:17,339 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 02:03:17,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2024-10-11 02:03:18,710 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 02:03:18,925 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 02:03:18,927 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c [2024-10-11 02:03:18,935 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fbe30a565/2b66846f9c4347488ef081a999c9d4c9/FLAGd2ea03041 [2024-10-11 02:03:18,948 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/fbe30a565/2b66846f9c4347488ef081a999c9d4c9 [2024-10-11 02:03:18,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 02:03:18,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 02:03:18,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 02:03:18,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 02:03:18,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 02:03:18,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:03:18" (1/1) ... [2024-10-11 02:03:18,959 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e1303c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:18, skipping insertion in model container [2024-10-11 02:03:18,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:03:18" (1/1) ... [2024-10-11 02:03:18,984 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 02:03:19,162 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c[576,589] [2024-10-11 02:03:19,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 02:03:19,189 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 02:03:19,201 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound10.c[576,589] [2024-10-11 02:03:19,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 02:03:19,223 INFO L204 MainTranslator]: Completed translation [2024-10-11 02:03:19,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19 WrapperNode [2024-10-11 02:03:19,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 02:03:19,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 02:03:19,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 02:03:19,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 02:03:19,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19" (1/1) ... [2024-10-11 02:03:19,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19" (1/1) ... [2024-10-11 02:03:19,259 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-10-11 02:03:19,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 02:03:19,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 02:03:19,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 02:03:19,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 02:03:19,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19" (1/1) ... [2024-10-11 02:03:19,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19" (1/1) ... [2024-10-11 02:03:19,273 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19" (1/1) ... [2024-10-11 02:03:19,290 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]. [2024-10-11 02:03:19,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19" (1/1) ... [2024-10-11 02:03:19,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19" (1/1) ... [2024-10-11 02:03:19,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19" (1/1) ... [2024-10-11 02:03:19,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19" (1/1) ... [2024-10-11 02:03:19,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19" (1/1) ... [2024-10-11 02:03:19,304 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19" (1/1) ... [2024-10-11 02:03:19,305 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 02:03:19,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 02:03:19,309 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 02:03:19,309 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 02:03:19,310 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19" (1/1) ... [2024-10-11 02:03:19,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 02:03:19,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:03:19,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 02:03:19,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 02:03:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 02:03:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 02:03:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 02:03:19,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 02:03:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 02:03:19,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 02:03:19,454 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 02:03:19,458 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 02:03:19,594 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-11 02:03:19,594 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 02:03:19,625 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 02:03:19,626 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 02:03:19,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:03:19 BoogieIcfgContainer [2024-10-11 02:03:19,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 02:03:19,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 02:03:19,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 02:03:19,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 02:03:19,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:03:18" (1/3) ... [2024-10-11 02:03:19,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46847357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:03:19, skipping insertion in model container [2024-10-11 02:03:19,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:03:19" (2/3) ... [2024-10-11 02:03:19,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46847357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:03:19, skipping insertion in model container [2024-10-11 02:03:19,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:03:19" (3/3) ... [2024-10-11 02:03:19,634 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound10.c [2024-10-11 02:03:19,679 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 02:03:19,681 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 02:03:19,742 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 02:03:19,748 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;@3202dec5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 02:03:19,748 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 02:03:19,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-11 02:03:19,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-11 02:03:19,758 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:19,759 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:19,760 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:19,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash 753274055, now seen corresponding path program 1 times [2024-10-11 02:03:19,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:19,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037532614] [2024-10-11 02:03:19,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:19,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 02:03:19,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:19,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037532614] [2024-10-11 02:03:19,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037532614] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:03:19,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:03:19,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 02:03:19,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209832162] [2024-10-11 02:03:19,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:03:19,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 02:03:19,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:19,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 02:03:19,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 02:03:19,986 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 02:03:20,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:20,035 INFO L93 Difference]: Finished difference Result 50 states and 82 transitions. [2024-10-11 02:03:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 02:03:20,040 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-11 02:03:20,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:20,048 INFO L225 Difference]: With dead ends: 50 [2024-10-11 02:03:20,048 INFO L226 Difference]: Without dead ends: 24 [2024-10-11 02:03:20,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 02:03:20,057 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:20,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:03:20,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-11 02:03:20,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-11 02:03:20,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 16 states have internal predecessors, (20), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 02:03:20,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2024-10-11 02:03:20,100 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 8 [2024-10-11 02:03:20,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:20,101 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2024-10-11 02:03:20,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 02:03:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2024-10-11 02:03:20,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-11 02:03:20,102 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:20,103 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:20,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 02:03:20,103 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:20,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:20,104 INFO L85 PathProgramCache]: Analyzing trace with hash -79941692, now seen corresponding path program 1 times [2024-10-11 02:03:20,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:20,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403192663] [2024-10-11 02:03:20,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:20,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 02:03:20,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403192663] [2024-10-11 02:03:20,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403192663] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:03:20,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:03:20,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 02:03:20,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213112014] [2024-10-11 02:03:20,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:03:20,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 02:03:20,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:20,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 02:03:20,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 02:03:20,265 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 02:03:20,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:20,297 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2024-10-11 02:03:20,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 02:03:20,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-11 02:03:20,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:20,300 INFO L225 Difference]: With dead ends: 33 [2024-10-11 02:03:20,300 INFO L226 Difference]: Without dead ends: 26 [2024-10-11 02:03:20,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 02:03:20,301 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:20,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:03:20,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-11 02:03:20,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-11 02:03:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 02:03:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2024-10-11 02:03:20,320 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 9 [2024-10-11 02:03:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:20,321 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2024-10-11 02:03:20,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 02:03:20,321 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2024-10-11 02:03:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-11 02:03:20,323 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:20,323 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:20,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 02:03:20,324 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:20,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:20,324 INFO L85 PathProgramCache]: Analyzing trace with hash -78452142, now seen corresponding path program 1 times [2024-10-11 02:03:20,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:20,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002972897] [2024-10-11 02:03:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:20,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:03:20,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816044586] [2024-10-11 02:03:20,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:20,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:20,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:03:20,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:03:20,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 02:03:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:20,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 02:03:20,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:03:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 02:03:20,498 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 02:03:20,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:20,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002972897] [2024-10-11 02:03:20,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:03:20,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816044586] [2024-10-11 02:03:20,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816044586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:03:20,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:03:20,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 02:03:20,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059237786] [2024-10-11 02:03:20,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:03:20,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 02:03:20,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:20,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 02:03:20,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 02:03:20,502 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 02:03:20,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:20,571 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2024-10-11 02:03:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 02:03:20,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-11 02:03:20,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:20,573 INFO L225 Difference]: With dead ends: 36 [2024-10-11 02:03:20,573 INFO L226 Difference]: Without dead ends: 34 [2024-10-11 02:03:20,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:03:20,574 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:20,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:03:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-11 02:03:20,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2024-10-11 02:03:20,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-11 02:03:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2024-10-11 02:03:20,591 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 9 [2024-10-11 02:03:20,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:20,591 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2024-10-11 02:03:20,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 02:03:20,592 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-10-11 02:03:20,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-11 02:03:20,592 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:20,592 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:20,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 02:03:20,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:20,793 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:20,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:20,794 INFO L85 PathProgramCache]: Analyzing trace with hash 921583882, now seen corresponding path program 1 times [2024-10-11 02:03:20,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:20,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140024801] [2024-10-11 02:03:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:20,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:03:20,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97868572] [2024-10-11 02:03:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:20,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:20,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:03:20,822 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:03:20,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 02:03:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:20,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 02:03:20,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:03:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 02:03:20,941 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 02:03:20,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:20,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140024801] [2024-10-11 02:03:20,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:03:20,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97868572] [2024-10-11 02:03:20,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97868572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:03:20,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:03:20,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 02:03:20,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655338819] [2024-10-11 02:03:20,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:03:20,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 02:03:20,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:20,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 02:03:20,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 02:03:20,945 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 02:03:21,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:21,024 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2024-10-11 02:03:21,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 02:03:21,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-10-11 02:03:21,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:21,026 INFO L225 Difference]: With dead ends: 49 [2024-10-11 02:03:21,026 INFO L226 Difference]: Without dead ends: 46 [2024-10-11 02:03:21,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:03:21,027 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:21,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 93 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:03:21,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-11 02:03:21,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-10-11 02:03:21,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-11 02:03:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2024-10-11 02:03:21,046 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 14 [2024-10-11 02:03:21,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:21,046 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2024-10-11 02:03:21,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-11 02:03:21,047 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2024-10-11 02:03:21,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-11 02:03:21,048 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:21,048 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:21,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 02:03:21,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:21,253 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:21,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:21,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1948965363, now seen corresponding path program 1 times [2024-10-11 02:03:21,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:21,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800705205] [2024-10-11 02:03:21,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:21,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:03:21,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205105248] [2024-10-11 02:03:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:21,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:21,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:03:21,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:03:21,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 02:03:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:21,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 02:03:21,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:03:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 02:03:21,394 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 02:03:21,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:21,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800705205] [2024-10-11 02:03:21,395 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:03:21,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205105248] [2024-10-11 02:03:21,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205105248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:03:21,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:03:21,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 02:03:21,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110811627] [2024-10-11 02:03:21,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:03:21,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 02:03:21,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:21,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 02:03:21,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 02:03:21,399 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 02:03:21,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:21,484 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2024-10-11 02:03:21,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 02:03:21,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-10-11 02:03:21,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:21,487 INFO L225 Difference]: With dead ends: 74 [2024-10-11 02:03:21,488 INFO L226 Difference]: Without dead ends: 72 [2024-10-11 02:03:21,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:03:21,490 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:21,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 110 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:03:21,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-11 02:03:21,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2024-10-11 02:03:21,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 40 states have (on average 1.3) internal successors, (52), 42 states have internal predecessors, (52), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-11 02:03:21,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 91 transitions. [2024-10-11 02:03:21,506 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 91 transitions. Word has length 22 [2024-10-11 02:03:21,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:21,507 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 91 transitions. [2024-10-11 02:03:21,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 02:03:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 91 transitions. [2024-10-11 02:03:21,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-11 02:03:21,508 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:21,508 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:21,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 02:03:21,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:21,713 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:21,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:21,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1914041250, now seen corresponding path program 1 times [2024-10-11 02:03:21,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:21,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699177045] [2024-10-11 02:03:21,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:21,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:21,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 02:03:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:21,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-11 02:03:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 02:03:21,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:21,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699177045] [2024-10-11 02:03:21,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699177045] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:03:21,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:03:21,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 02:03:21,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792060199] [2024-10-11 02:03:21,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:03:21,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 02:03:21,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:21,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 02:03:21,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:03:21,892 INFO L87 Difference]: Start difference. First operand 65 states and 91 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 02:03:21,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:21,938 INFO L93 Difference]: Finished difference Result 104 states and 144 transitions. [2024-10-11 02:03:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 02:03:21,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2024-10-11 02:03:21,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:21,941 INFO L225 Difference]: With dead ends: 104 [2024-10-11 02:03:21,941 INFO L226 Difference]: Without dead ends: 69 [2024-10-11 02:03:21,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:03:21,943 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:21,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 110 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:03:21,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-11 02:03:21,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-10-11 02:03:21,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 43 states have (on average 1.255813953488372) internal successors, (54), 45 states have internal predecessors, (54), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-11 02:03:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2024-10-11 02:03:21,966 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 25 [2024-10-11 02:03:21,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:21,966 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2024-10-11 02:03:21,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 02:03:21,967 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2024-10-11 02:03:21,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 02:03:21,969 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:21,969 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:21,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 02:03:21,969 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:21,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:21,970 INFO L85 PathProgramCache]: Analyzing trace with hash -531579021, now seen corresponding path program 1 times [2024-10-11 02:03:21,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:21,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064526267] [2024-10-11 02:03:21,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:21,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:22,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 02:03:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:22,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-11 02:03:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:22,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 02:03:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:22,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-11 02:03:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 02:03:22,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:22,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064526267] [2024-10-11 02:03:22,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064526267] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:03:22,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:03:22,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 02:03:22,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701225652] [2024-10-11 02:03:22,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:03:22,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 02:03:22,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:22,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 02:03:22,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 02:03:22,208 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 02:03:22,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:22,276 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2024-10-11 02:03:22,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 02:03:22,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-10-11 02:03:22,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:22,278 INFO L225 Difference]: With dead ends: 75 [2024-10-11 02:03:22,278 INFO L226 Difference]: Without dead ends: 73 [2024-10-11 02:03:22,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-11 02:03:22,279 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 17 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:22,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 100 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:03:22,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-11 02:03:22,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-11 02:03:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 48 states have internal predecessors, (57), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-11 02:03:22,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2024-10-11 02:03:22,291 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 32 [2024-10-11 02:03:22,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:22,292 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2024-10-11 02:03:22,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-11 02:03:22,292 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2024-10-11 02:03:22,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-11 02:03:22,293 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:22,293 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:22,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 02:03:22,293 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:22,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:22,293 INFO L85 PathProgramCache]: Analyzing trace with hash -2026419203, now seen corresponding path program 1 times [2024-10-11 02:03:22,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:22,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474005589] [2024-10-11 02:03:22,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:22,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:22,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 02:03:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:22,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-11 02:03:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:22,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 02:03:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:22,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-11 02:03:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:22,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-11 02:03:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-11 02:03:22,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:22,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474005589] [2024-10-11 02:03:22,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474005589] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:03:22,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504835090] [2024-10-11 02:03:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:22,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:22,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:03:22,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:03:22,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 02:03:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:22,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 02:03:22,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:03:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 02:03:22,700 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 02:03:22,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504835090] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:03:22,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 02:03:22,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-10-11 02:03:22,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067042308] [2024-10-11 02:03:22,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:03:22,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 02:03:22,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:22,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 02:03:22,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-11 02:03:22,703 INFO L87 Difference]: Start difference. First operand 73 states and 96 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 02:03:22,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:22,813 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2024-10-11 02:03:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 02:03:22,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-10-11 02:03:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:22,815 INFO L225 Difference]: With dead ends: 86 [2024-10-11 02:03:22,816 INFO L226 Difference]: Without dead ends: 84 [2024-10-11 02:03:22,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-10-11 02:03:22,818 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:22,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 147 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:03:22,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-11 02:03:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2024-10-11 02:03:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 53 states have internal predecessors, (60), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-11 02:03:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 103 transitions. [2024-10-11 02:03:22,843 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 103 transitions. Word has length 38 [2024-10-11 02:03:22,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:22,843 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 103 transitions. [2024-10-11 02:03:22,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-11 02:03:22,844 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 103 transitions. [2024-10-11 02:03:22,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 02:03:22,845 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:22,845 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:22,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 02:03:23,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 02:03:23,046 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:23,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:23,046 INFO L85 PathProgramCache]: Analyzing trace with hash -369399342, now seen corresponding path program 1 times [2024-10-11 02:03:23,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:23,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133399026] [2024-10-11 02:03:23,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:23,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:23,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 02:03:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:23,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-11 02:03:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:23,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 02:03:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:23,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-11 02:03:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:23,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-11 02:03:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 02:03:23,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:23,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133399026] [2024-10-11 02:03:23,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133399026] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:03:23,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123735191] [2024-10-11 02:03:23,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:23,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:23,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:03:23,155 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:03:23,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 02:03:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:23,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 02:03:23,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:03:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 02:03:23,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:03:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-11 02:03:23,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123735191] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:03:23,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 02:03:23,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 12 [2024-10-11 02:03:23,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580632338] [2024-10-11 02:03:23,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 02:03:23,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 02:03:23,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:23,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 02:03:23,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-10-11 02:03:23,381 INFO L87 Difference]: Start difference. First operand 79 states and 103 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-11 02:03:23,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:23,582 INFO L93 Difference]: Finished difference Result 246 states and 303 transitions. [2024-10-11 02:03:23,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 02:03:23,583 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 41 [2024-10-11 02:03:23,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:23,585 INFO L225 Difference]: With dead ends: 246 [2024-10-11 02:03:23,585 INFO L226 Difference]: Without dead ends: 239 [2024-10-11 02:03:23,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-10-11 02:03:23,587 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 85 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:23,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 187 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:03:23,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-11 02:03:23,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 223. [2024-10-11 02:03:23,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 143 states have (on average 1.2027972027972027) internal successors, (172), 152 states have internal predecessors, (172), 55 states have call successors, (55), 24 states have call predecessors, (55), 24 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-11 02:03:23,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 278 transitions. [2024-10-11 02:03:23,619 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 278 transitions. Word has length 41 [2024-10-11 02:03:23,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:23,620 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 278 transitions. [2024-10-11 02:03:23,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-11 02:03:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 278 transitions. [2024-10-11 02:03:23,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-11 02:03:23,621 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:23,622 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:23,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 02:03:23,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:23,823 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:23,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:23,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1199104068, now seen corresponding path program 1 times [2024-10-11 02:03:23,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:23,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519220520] [2024-10-11 02:03:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:23,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:03:23,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188223835] [2024-10-11 02:03:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:23,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:23,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:03:23,849 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:03:23,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 02:03:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:23,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 02:03:23,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:03:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-11 02:03:24,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:03:24,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:24,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519220520] [2024-10-11 02:03:24,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:03:24,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188223835] [2024-10-11 02:03:24,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188223835] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:03:24,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 02:03:24,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-11 02:03:24,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078356610] [2024-10-11 02:03:24,484 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 02:03:24,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 02:03:24,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:24,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 02:03:24,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-10-11 02:03:24,486 INFO L87 Difference]: Start difference. First operand 223 states and 278 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-11 02:03:24,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:24,667 INFO L93 Difference]: Finished difference Result 298 states and 366 transitions. [2024-10-11 02:03:24,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 02:03:24,667 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 46 [2024-10-11 02:03:24,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:24,669 INFO L225 Difference]: With dead ends: 298 [2024-10-11 02:03:24,671 INFO L226 Difference]: Without dead ends: 186 [2024-10-11 02:03:24,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-10-11 02:03:24,674 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:24,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 138 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:03:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-10-11 02:03:24,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2024-10-11 02:03:24,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 120 states have (on average 1.1916666666666667) internal successors, (143), 126 states have internal predecessors, (143), 43 states have call successors, (43), 21 states have call predecessors, (43), 21 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-11 02:03:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 226 transitions. [2024-10-11 02:03:24,702 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 226 transitions. Word has length 46 [2024-10-11 02:03:24,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:24,702 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 226 transitions. [2024-10-11 02:03:24,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 9 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-11 02:03:24,703 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 226 transitions. [2024-10-11 02:03:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-11 02:03:24,705 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:24,705 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:24,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 02:03:24,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 02:03:24,906 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:24,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:24,907 INFO L85 PathProgramCache]: Analyzing trace with hash 902121970, now seen corresponding path program 1 times [2024-10-11 02:03:24,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:24,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108235786] [2024-10-11 02:03:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:24,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:03:24,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210489365] [2024-10-11 02:03:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:24,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:24,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:03:24,924 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:03:24,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 02:03:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:24,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-11 02:03:24,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:03:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-11 02:03:25,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:03:25,130 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-11 02:03:25,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:25,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108235786] [2024-10-11 02:03:25,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:03:25,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210489365] [2024-10-11 02:03:25,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210489365] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 02:03:25,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 02:03:25,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-10-11 02:03:25,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989042880] [2024-10-11 02:03:25,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:03:25,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 02:03:25,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:25,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 02:03:25,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 02:03:25,135 INFO L87 Difference]: Start difference. First operand 185 states and 226 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 02:03:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:25,207 INFO L93 Difference]: Finished difference Result 203 states and 243 transitions. [2024-10-11 02:03:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 02:03:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2024-10-11 02:03:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:25,210 INFO L225 Difference]: With dead ends: 203 [2024-10-11 02:03:25,210 INFO L226 Difference]: Without dead ends: 201 [2024-10-11 02:03:25,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 02:03:25,211 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:25,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 70 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:03:25,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-11 02:03:25,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-10-11 02:03:25,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 132 states have (on average 1.1742424242424243) internal successors, (155), 138 states have internal predecessors, (155), 43 states have call successors, (43), 25 states have call predecessors, (43), 25 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-11 02:03:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 238 transitions. [2024-10-11 02:03:25,237 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 238 transitions. Word has length 46 [2024-10-11 02:03:25,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:25,237 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 238 transitions. [2024-10-11 02:03:25,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 02:03:25,238 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 238 transitions. [2024-10-11 02:03:25,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-11 02:03:25,240 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:25,241 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:25,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 02:03:25,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:25,442 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:25,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1064319211, now seen corresponding path program 1 times [2024-10-11 02:03:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:25,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113872288] [2024-10-11 02:03:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:25,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:25,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 02:03:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:25,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-11 02:03:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:25,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 02:03:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:25,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-11 02:03:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:25,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-11 02:03:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:25,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 02:03:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:25,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-11 02:03:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:25,576 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 02:03:25,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:25,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113872288] [2024-10-11 02:03:25,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113872288] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:03:25,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720932370] [2024-10-11 02:03:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:25,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:25,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:03:25,578 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:03:25,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 02:03:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:25,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 02:03:25,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:03:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 40 proven. 34 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-11 02:03:25,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:03:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-11 02:03:25,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720932370] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:03:25,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 02:03:25,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 12 [2024-10-11 02:03:25,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035118908] [2024-10-11 02:03:25,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 02:03:25,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 02:03:25,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:25,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 02:03:25,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-10-11 02:03:25,781 INFO L87 Difference]: Start difference. First operand 201 states and 238 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-10-11 02:03:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:25,962 INFO L93 Difference]: Finished difference Result 318 states and 375 transitions. [2024-10-11 02:03:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 02:03:25,964 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 54 [2024-10-11 02:03:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:25,966 INFO L225 Difference]: With dead ends: 318 [2024-10-11 02:03:25,966 INFO L226 Difference]: Without dead ends: 220 [2024-10-11 02:03:25,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-10-11 02:03:25,967 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 82 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:25,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 170 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:03:25,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-10-11 02:03:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2024-10-11 02:03:25,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 143 states have (on average 1.132867132867133) internal successors, (162), 148 states have internal predecessors, (162), 44 states have call successors, (44), 26 states have call predecessors, (44), 26 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2024-10-11 02:03:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 247 transitions. [2024-10-11 02:03:25,987 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 247 transitions. Word has length 54 [2024-10-11 02:03:25,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:25,987 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 247 transitions. [2024-10-11 02:03:25,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-10-11 02:03:25,988 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 247 transitions. [2024-10-11 02:03:25,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-11 02:03:25,988 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:25,988 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:26,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 02:03:26,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 02:03:26,190 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:26,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:26,190 INFO L85 PathProgramCache]: Analyzing trace with hash -716710404, now seen corresponding path program 2 times [2024-10-11 02:03:26,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:26,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471050771] [2024-10-11 02:03:26,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:26,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:26,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-11 02:03:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:26,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-11 02:03:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:26,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-11 02:03:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:26,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-11 02:03:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:26,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-11 02:03:26,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:26,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 02:03:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:26,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-11 02:03:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:26,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-11 02:03:26,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:26,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 02:03:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-10-11 02:03:26,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:26,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471050771] [2024-10-11 02:03:26,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471050771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:03:26,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932039350] [2024-10-11 02:03:26,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 02:03:26,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:26,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:03:26,404 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:03:26,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 02:03:26,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 02:03:26,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 02:03:26,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 02:03:26,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:03:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-10-11 02:03:26,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:03:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-10-11 02:03:26,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932039350] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:03:26,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 02:03:26,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 14 [2024-10-11 02:03:26,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947571564] [2024-10-11 02:03:26,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 02:03:26,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 02:03:26,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:26,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 02:03:26,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-10-11 02:03:26,690 INFO L87 Difference]: Start difference. First operand 214 states and 247 transitions. Second operand has 14 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-10-11 02:03:26,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:26,816 INFO L93 Difference]: Finished difference Result 228 states and 260 transitions. [2024-10-11 02:03:26,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 02:03:26,816 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 62 [2024-10-11 02:03:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:26,819 INFO L225 Difference]: With dead ends: 228 [2024-10-11 02:03:26,819 INFO L226 Difference]: Without dead ends: 226 [2024-10-11 02:03:26,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-10-11 02:03:26,820 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:26,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 90 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 02:03:26,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-10-11 02:03:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2024-10-11 02:03:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 152 states have (on average 1.118421052631579) internal successors, (170), 157 states have internal predecessors, (170), 44 states have call successors, (44), 29 states have call predecessors, (44), 29 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41) [2024-10-11 02:03:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2024-10-11 02:03:26,848 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 62 [2024-10-11 02:03:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:26,849 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2024-10-11 02:03:26,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 11 states have internal predecessors, (35), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-10-11 02:03:26,849 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2024-10-11 02:03:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-11 02:03:26,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:26,850 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 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, 1] [2024-10-11 02:03:26,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 02:03:27,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:27,055 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:27,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:27,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1772176059, now seen corresponding path program 1 times [2024-10-11 02:03:27,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:27,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353197898] [2024-10-11 02:03:27,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:27,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:03:27,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574591646] [2024-10-11 02:03:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:27,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:27,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:03:27,079 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:03:27,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 02:03:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:03:27,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-11 02:03:27,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:03:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-11 02:03:27,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:03:36,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:36,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353197898] [2024-10-11 02:03:36,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:03:36,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574591646] [2024-10-11 02:03:36,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574591646] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:03:36,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 02:03:36,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-10-11 02:03:36,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128933586] [2024-10-11 02:03:36,134 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 02:03:36,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 02:03:36,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:36,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 02:03:36,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-10-11 02:03:36,135 INFO L87 Difference]: Start difference. First operand 226 states and 255 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-11 02:03:36,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:36,496 INFO L93 Difference]: Finished difference Result 254 states and 286 transitions. [2024-10-11 02:03:36,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 02:03:36,497 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 70 [2024-10-11 02:03:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:36,499 INFO L225 Difference]: With dead ends: 254 [2024-10-11 02:03:36,499 INFO L226 Difference]: Without dead ends: 251 [2024-10-11 02:03:36,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2024-10-11 02:03:36,499 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:36,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 369 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 02:03:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-10-11 02:03:36,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2024-10-11 02:03:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 168 states have (on average 1.1071428571428572) internal successors, (186), 172 states have internal predecessors, (186), 47 states have call successors, (47), 33 states have call predecessors, (47), 33 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2024-10-11 02:03:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 278 transitions. [2024-10-11 02:03:36,525 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 278 transitions. Word has length 70 [2024-10-11 02:03:36,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:36,526 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 278 transitions. [2024-10-11 02:03:36,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-11 02:03:36,526 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 278 transitions. [2024-10-11 02:03:36,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-11 02:03:36,527 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:03:36,527 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:36,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 02:03:36,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 02:03:36,732 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:03:36,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:03:36,732 INFO L85 PathProgramCache]: Analyzing trace with hash 51517626, now seen corresponding path program 2 times [2024-10-11 02:03:36,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:03:36,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440541346] [2024-10-11 02:03:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:03:36,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:03:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 02:03:36,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882524665] [2024-10-11 02:03:36,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 02:03:36,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:03:36,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:03:36,757 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:03:36,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 02:03:36,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 02:03:36,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 02:03:36,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-11 02:03:36,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:03:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 28 proven. 24 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-11 02:03:37,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 02:03:37,882 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-11 02:03:37,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:03:37,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440541346] [2024-10-11 02:03:37,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 02:03:37,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882524665] [2024-10-11 02:03:37,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882524665] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 02:03:37,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 02:03:37,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2024-10-11 02:03:37,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18437184] [2024-10-11 02:03:37,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 02:03:37,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 02:03:37,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:03:37,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 02:03:37,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-10-11 02:03:37,885 INFO L87 Difference]: Start difference. First operand 249 states and 278 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 20 states have internal predecessors, (48), 12 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 12 states have call predecessors, (28), 12 states have call successors, (28) [2024-10-11 02:03:38,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:03:38,469 INFO L93 Difference]: Finished difference Result 269 states and 308 transitions. [2024-10-11 02:03:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 02:03:38,469 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 20 states have internal predecessors, (48), 12 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 12 states have call predecessors, (28), 12 states have call successors, (28) Word has length 94 [2024-10-11 02:03:38,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:03:38,470 INFO L225 Difference]: With dead ends: 269 [2024-10-11 02:03:38,470 INFO L226 Difference]: Without dead ends: 0 [2024-10-11 02:03:38,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2024-10-11 02:03:38,471 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 91 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 02:03:38,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 444 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 02:03:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-11 02:03:38,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-11 02:03:38,472 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) [2024-10-11 02:03:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-11 02:03:38,475 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2024-10-11 02:03:38,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:03:38,476 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-11 02:03:38,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 20 states have internal predecessors, (48), 12 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 12 states have call predecessors, (28), 12 states have call successors, (28) [2024-10-11 02:03:38,476 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-11 02:03:38,476 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-11 02:03:38,478 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-11 02:03:38,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-11 02:03:38,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 02:03:38,685 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 02:03:38,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-11 02:03:39,905 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 02:03:39,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:03:39 BoogieIcfgContainer [2024-10-11 02:03:39,932 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 02:03:39,933 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 02:03:39,933 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 02:03:39,933 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 02:03:39,933 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:03:19" (3/4) ... [2024-10-11 02:03:39,935 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 02:03:39,938 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-11 02:03:39,940 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-11 02:03:39,941 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-11 02:03:39,941 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 02:03:39,941 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 02:03:40,033 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 02:03:40,034 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 02:03:40,034 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 02:03:40,036 INFO L158 Benchmark]: Toolchain (without parser) took 21083.86ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 126.0MB in the beginning and 79.7MB in the end (delta: 46.3MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. [2024-10-11 02:03:40,036 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 157.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 02:03:40,036 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.50ms. Allocated memory is still 157.3MB. Free memory was 126.0MB in the beginning and 113.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 02:03:40,036 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.17ms. Allocated memory is still 157.3MB. Free memory was 113.1MB in the beginning and 111.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 02:03:40,037 INFO L158 Benchmark]: Boogie Preprocessor took 44.99ms. Allocated memory is still 157.3MB. Free memory was 111.6MB in the beginning and 110.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 02:03:40,037 INFO L158 Benchmark]: RCFGBuilder took 320.14ms. Allocated memory is still 157.3MB. Free memory was 110.2MB in the beginning and 126.1MB in the end (delta: -15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-11 02:03:40,037 INFO L158 Benchmark]: TraceAbstraction took 20303.54ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 125.1MB in the beginning and 84.9MB in the end (delta: 40.2MB). Peak memory consumption was 112.1MB. Max. memory is 16.1GB. [2024-10-11 02:03:40,037 INFO L158 Benchmark]: Witness Printer took 101.30ms. Allocated memory is still 188.7MB. Free memory was 84.9MB in the beginning and 79.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 02:03:40,039 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 157.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.50ms. Allocated memory is still 157.3MB. Free memory was 126.0MB in the beginning and 113.6MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.17ms. Allocated memory is still 157.3MB. Free memory was 113.1MB in the beginning and 111.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.99ms. Allocated memory is still 157.3MB. Free memory was 111.6MB in the beginning and 110.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 320.14ms. Allocated memory is still 157.3MB. Free memory was 110.2MB in the beginning and 126.1MB in the end (delta: -15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 20303.54ms. Allocated memory was 157.3MB in the beginning and 188.7MB in the end (delta: 31.5MB). Free memory was 125.1MB in the beginning and 84.9MB in the end (delta: 40.2MB). Peak memory consumption was 112.1MB. Max. memory is 16.1GB. * Witness Printer took 101.30ms. Allocated memory is still 188.7MB. Free memory was 84.9MB in the beginning and 79.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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: 17]: 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 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.0s, OverallIterations: 15, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 417 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 378 mSDsluCounter, 2251 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1811 mSDsCounter, 158 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1604 IncrementalHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 158 mSolverCounterUnsat, 440 mSDtfsCounter, 1604 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 997 GetRequests, 850 SyntacticMatches, 4 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=14, InterpolantAutomatonStates: 120, 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, 15 MinimizatonAttempts, 41 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 1066 NumberOfCodeBlocks, 1066 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1038 ConstructedInterpolants, 0 QuantifiedInterpolants, 3724 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1358 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 2218/2395 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: 46]: Loop Invariant Derived loop invariant: ((((x == (r + ((__int128) q * y))) && (1 <= y)) && (1 <= r)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((x == (r + ((__int128) q * y))) && (1 <= y)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-10-11 02:03:40,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE