./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_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93ad3f0e42b4c26a38d8e528f550b89aecdadec634fd1fe3b21f86af4528c655 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 00:04:58,978 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 00:04:59,039 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 00:04:59,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 00:04:59,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 00:04:59,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 00:04:59,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 00:04:59,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 00:04:59,058 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 00:04:59,059 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 00:04:59,059 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 00:04:59,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 00:04:59,060 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 00:04:59,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 00:04:59,060 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 00:04:59,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 00:04:59,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 00:04:59,061 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 00:04:59,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 00:04:59,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 00:04:59,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 00:04:59,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 00:04:59,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 00:04:59,063 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 00:04:59,063 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 00:04:59,063 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 00:04:59,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 00:04:59,064 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 00:04:59,064 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 00:04:59,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 00:04:59,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 00:04:59,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 00:04:59,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 00:04:59,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 00:04:59,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 00:04:59,066 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 00:04:59,066 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 00:04:59,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 00:04:59,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 00:04:59,067 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 00:04:59,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 00:04:59,068 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 00:04:59,068 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93ad3f0e42b4c26a38d8e528f550b89aecdadec634fd1fe3b21f86af4528c655 [2024-10-24 00:04:59,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 00:04:59,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 00:04:59,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 00:04:59,292 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 00:04:59,292 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 00:04:59,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c [2024-10-24 00:05:00,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 00:05:00,991 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 00:05:00,991 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c [2024-10-24 00:05:01,001 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3e0347b2/3cccf8ba7c6e42829d1bd99e0008b974/FLAG2ba364202 [2024-10-24 00:05:01,366 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3e0347b2/3cccf8ba7c6e42829d1bd99e0008b974 [2024-10-24 00:05:01,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 00:05:01,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 00:05:01,376 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 00:05:01,376 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 00:05:01,382 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 00:05:01,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605bee4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01, skipping insertion in model container [2024-10-24 00:05:01,384 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,405 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 00:05:01,612 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_unwindbound20.c[576,589] [2024-10-24 00:05:01,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 00:05:01,639 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 00:05:01,651 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_unwindbound20.c[576,589] [2024-10-24 00:05:01,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 00:05:01,690 INFO L204 MainTranslator]: Completed translation [2024-10-24 00:05:01,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01 WrapperNode [2024-10-24 00:05:01,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 00:05:01,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 00:05:01,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 00:05:01,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 00:05:01,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,725 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-10-24 00:05:01,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 00:05:01,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 00:05:01,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 00:05:01,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 00:05:01,736 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,737 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,749 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]. [2024-10-24 00:05:01,750 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,760 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 00:05:01,761 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 00:05:01,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 00:05:01,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 00:05:01,762 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01" (1/1) ... [2024-10-24 00:05:01,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 00:05:01,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:05:01,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 00:05:01,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 00:05:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 00:05:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 00:05:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 00:05:01,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 00:05:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 00:05:01,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 00:05:01,897 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 00:05:01,898 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 00:05:02,005 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-24 00:05:02,005 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 00:05:02,047 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 00:05:02,047 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 00:05:02,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:05:02 BoogieIcfgContainer [2024-10-24 00:05:02,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 00:05:02,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 00:05:02,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 00:05:02,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 00:05:02,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:05:01" (1/3) ... [2024-10-24 00:05:02,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3892b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:05:02, skipping insertion in model container [2024-10-24 00:05:02,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:05:01" (2/3) ... [2024-10-24 00:05:02,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3892b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:05:02, skipping insertion in model container [2024-10-24 00:05:02,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:05:02" (3/3) ... [2024-10-24 00:05:02,061 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound20.c [2024-10-24 00:05:02,077 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 00:05:02,078 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 00:05:02,141 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 00:05:02,153 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;@5d80be03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 00:05:02,157 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 00:05:02,165 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) [2024-10-24 00:05:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-24 00:05:02,180 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:02,181 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:05:02,185 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:02,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:02,195 INFO L85 PathProgramCache]: Analyzing trace with hash 753274055, now seen corresponding path program 1 times [2024-10-24 00:05:02,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:02,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595544740] [2024-10-24 00:05:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:02,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:05:02,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:02,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595544740] [2024-10-24 00:05:02,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595544740] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:05:02,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:05:02,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 00:05:02,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195718211] [2024-10-24 00:05:02,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:05:02,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 00:05:02,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:02,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 00:05:02,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 00:05:02,381 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) [2024-10-24 00:05:02,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:02,411 INFO L93 Difference]: Finished difference Result 50 states and 82 transitions. [2024-10-24 00:05:02,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 00:05:02,414 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 [2024-10-24 00:05:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:02,422 INFO L225 Difference]: With dead ends: 50 [2024-10-24 00:05:02,423 INFO L226 Difference]: Without dead ends: 24 [2024-10-24 00:05:02,426 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 [2024-10-24 00:05:02,435 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 [2024-10-24 00:05:02,437 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] [2024-10-24 00:05:02,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-24 00:05:02,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-24 00:05:02,471 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) [2024-10-24 00:05:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2024-10-24 00:05:02,475 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 8 [2024-10-24 00:05:02,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:02,475 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2024-10-24 00:05:02,475 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) [2024-10-24 00:05:02,476 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2024-10-24 00:05:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 00:05:02,478 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:02,479 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:05:02,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 00:05:02,479 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:02,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:02,480 INFO L85 PathProgramCache]: Analyzing trace with hash -79941692, now seen corresponding path program 1 times [2024-10-24 00:05:02,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:02,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716949140] [2024-10-24 00:05:02,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:02,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:05:02,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:02,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716949140] [2024-10-24 00:05:02,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716949140] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:05:02,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:05:02,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 00:05:02,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474932377] [2024-10-24 00:05:02,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:05:02,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 00:05:02,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:02,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 00:05:02,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 00:05:02,735 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) [2024-10-24 00:05:02,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:02,777 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2024-10-24 00:05:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 00:05:02,781 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 [2024-10-24 00:05:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:02,782 INFO L225 Difference]: With dead ends: 33 [2024-10-24 00:05:02,782 INFO L226 Difference]: Without dead ends: 26 [2024-10-24 00:05:02,783 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 [2024-10-24 00:05:02,784 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 [2024-10-24 00:05:02,784 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] [2024-10-24 00:05:02,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-24 00:05:02,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-24 00:05:02,803 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) [2024-10-24 00:05:02,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2024-10-24 00:05:02,806 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 9 [2024-10-24 00:05:02,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:02,807 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2024-10-24 00:05:02,811 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) [2024-10-24 00:05:02,812 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2024-10-24 00:05:02,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 00:05:02,812 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:02,812 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:05:02,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 00:05:02,812 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:02,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:02,813 INFO L85 PathProgramCache]: Analyzing trace with hash -78452142, now seen corresponding path program 1 times [2024-10-24 00:05:02,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:02,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702953212] [2024-10-24 00:05:02,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:02,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:05:02,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209493250] [2024-10-24 00:05:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:02,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:02,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:05:02,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:05:02,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 00:05:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:02,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 00:05:02,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:05:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:05:02,994 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 00:05:02,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702953212] [2024-10-24 00:05:02,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:05:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209493250] [2024-10-24 00:05:02,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209493250] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:05:02,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:05:02,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 00:05:02,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779118313] [2024-10-24 00:05:02,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:05:02,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:05:02,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:02,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:05:02,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:05:02,997 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) [2024-10-24 00:05:03,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:03,035 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2024-10-24 00:05:03,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:05:03,036 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 [2024-10-24 00:05:03,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:03,036 INFO L225 Difference]: With dead ends: 36 [2024-10-24 00:05:03,036 INFO L226 Difference]: Without dead ends: 34 [2024-10-24 00:05:03,037 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 [2024-10-24 00:05:03,038 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 [2024-10-24 00:05:03,038 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] [2024-10-24 00:05:03,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-24 00:05:03,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2024-10-24 00:05:03,043 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) [2024-10-24 00:05:03,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2024-10-24 00:05:03,044 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 9 [2024-10-24 00:05:03,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:03,045 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2024-10-24 00:05:03,045 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) [2024-10-24 00:05:03,045 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-10-24 00:05:03,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-24 00:05:03,045 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:03,045 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:05:03,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 00:05:03,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:03,247 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:03,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:03,248 INFO L85 PathProgramCache]: Analyzing trace with hash 921583882, now seen corresponding path program 1 times [2024-10-24 00:05:03,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:03,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760923126] [2024-10-24 00:05:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:03,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:05:03,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982760207] [2024-10-24 00:05:03,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:03,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:03,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:05:03,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:05:03,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 00:05:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:03,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 00:05:03,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:05:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 00:05:03,335 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 00:05:03,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:03,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760923126] [2024-10-24 00:05:03,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:05:03,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982760207] [2024-10-24 00:05:03,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982760207] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:05:03,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:05:03,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 00:05:03,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589664799] [2024-10-24 00:05:03,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:05:03,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:05:03,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:03,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:05:03,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:05:03,338 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) [2024-10-24 00:05:03,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:03,386 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2024-10-24 00:05:03,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:05:03,387 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 [2024-10-24 00:05:03,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:03,388 INFO L225 Difference]: With dead ends: 49 [2024-10-24 00:05:03,388 INFO L226 Difference]: Without dead ends: 46 [2024-10-24 00:05:03,388 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 [2024-10-24 00:05:03,389 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, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:05:03,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 93 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:05:03,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-24 00:05:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-10-24 00:05:03,401 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) [2024-10-24 00:05:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2024-10-24 00:05:03,406 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 14 [2024-10-24 00:05:03,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:03,406 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2024-10-24 00:05:03,407 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) [2024-10-24 00:05:03,407 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2024-10-24 00:05:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-24 00:05:03,407 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:03,407 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:05:03,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 00:05:03,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-24 00:05:03,612 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:03,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:03,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1948965363, now seen corresponding path program 1 times [2024-10-24 00:05:03,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:03,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934138756] [2024-10-24 00:05:03,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:03,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:05:03,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790570020] [2024-10-24 00:05:03,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:03,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:03,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:05:03,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:05:03,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 00:05:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:03,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 00:05:03,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:05:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 00:05:03,749 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 00:05:03,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:03,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934138756] [2024-10-24 00:05:03,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:05:03,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790570020] [2024-10-24 00:05:03,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790570020] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:05:03,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:05:03,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 00:05:03,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947225750] [2024-10-24 00:05:03,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:05:03,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:05:03,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:05:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 00:05:03,751 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) [2024-10-24 00:05:03,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:03,827 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2024-10-24 00:05:03,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:05:03,827 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 [2024-10-24 00:05:03,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:03,829 INFO L225 Difference]: With dead ends: 74 [2024-10-24 00:05:03,831 INFO L226 Difference]: Without dead ends: 72 [2024-10-24 00:05:03,832 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 [2024-10-24 00:05:03,833 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 [2024-10-24 00:05:03,836 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] [2024-10-24 00:05:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-24 00:05:03,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2024-10-24 00:05:03,855 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) [2024-10-24 00:05:03,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 91 transitions. [2024-10-24 00:05:03,857 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 91 transitions. Word has length 22 [2024-10-24 00:05:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:03,857 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 91 transitions. [2024-10-24 00:05:03,858 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) [2024-10-24 00:05:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 91 transitions. [2024-10-24 00:05:03,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-24 00:05:03,861 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:03,861 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] [2024-10-24 00:05:03,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 00:05:04,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:04,062 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:04,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:04,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1914041250, now seen corresponding path program 1 times [2024-10-24 00:05:04,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:04,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405838452] [2024-10-24 00:05:04,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:04,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 00:05:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 00:05:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 00:05:04,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:04,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405838452] [2024-10-24 00:05:04,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405838452] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:05:04,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:05:04,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 00:05:04,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581772926] [2024-10-24 00:05:04,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:05:04,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 00:05:04,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:04,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 00:05:04,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 00:05:04,176 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) [2024-10-24 00:05:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:04,205 INFO L93 Difference]: Finished difference Result 104 states and 144 transitions. [2024-10-24 00:05:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 00:05:04,205 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 [2024-10-24 00:05:04,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:04,208 INFO L225 Difference]: With dead ends: 104 [2024-10-24 00:05:04,208 INFO L226 Difference]: Without dead ends: 69 [2024-10-24 00:05:04,208 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 [2024-10-24 00:05:04,209 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 [2024-10-24 00:05:04,209 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] [2024-10-24 00:05:04,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-10-24 00:05:04,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-10-24 00:05:04,218 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) [2024-10-24 00:05:04,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2024-10-24 00:05:04,220 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 25 [2024-10-24 00:05:04,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:04,220 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2024-10-24 00:05:04,220 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) [2024-10-24 00:05:04,220 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2024-10-24 00:05:04,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-24 00:05:04,221 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:04,221 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] [2024-10-24 00:05:04,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 00:05:04,221 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:04,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:04,221 INFO L85 PathProgramCache]: Analyzing trace with hash -531579021, now seen corresponding path program 1 times [2024-10-24 00:05:04,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:04,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372771717] [2024-10-24 00:05:04,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:04,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 00:05:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 00:05:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 00:05:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:05:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-24 00:05:04,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:04,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372771717] [2024-10-24 00:05:04,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372771717] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:05:04,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 00:05:04,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 00:05:04,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240549313] [2024-10-24 00:05:04,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:05:04,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 00:05:04,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:04,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 00:05:04,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 00:05:04,449 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) [2024-10-24 00:05:04,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:04,512 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2024-10-24 00:05:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 00:05:04,513 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 [2024-10-24 00:05:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:04,514 INFO L225 Difference]: With dead ends: 75 [2024-10-24 00:05:04,515 INFO L226 Difference]: Without dead ends: 73 [2024-10-24 00:05:04,516 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 [2024-10-24 00:05:04,516 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, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 00:05:04,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 100 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 00:05:04,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-24 00:05:04,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-10-24 00:05:04,530 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) [2024-10-24 00:05:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 96 transitions. [2024-10-24 00:05:04,533 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 96 transitions. Word has length 32 [2024-10-24 00:05:04,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:04,534 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 96 transitions. [2024-10-24 00:05:04,534 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) [2024-10-24 00:05:04,534 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 96 transitions. [2024-10-24 00:05:04,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-24 00:05:04,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:04,535 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] [2024-10-24 00:05:04,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 00:05:04,536 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:04,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:04,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2026419203, now seen corresponding path program 1 times [2024-10-24 00:05:04,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:04,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169715178] [2024-10-24 00:05:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:04,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 00:05:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 00:05:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 00:05:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:05:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:05:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-10-24 00:05:04,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:04,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169715178] [2024-10-24 00:05:04,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169715178] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:05:04,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54860433] [2024-10-24 00:05:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:04,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:04,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:05:04,713 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:05:04,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 00:05:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:04,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 00:05:04,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:05:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 00:05:04,841 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 00:05:04,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54860433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 00:05:04,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:05:04,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-10-24 00:05:04,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601947342] [2024-10-24 00:05:04,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:05:04,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 00:05:04,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:04,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 00:05:04,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-24 00:05:04,844 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) [2024-10-24 00:05:04,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:04,920 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2024-10-24 00:05:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 00:05:04,920 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 [2024-10-24 00:05:04,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:04,921 INFO L225 Difference]: With dead ends: 86 [2024-10-24 00:05:04,921 INFO L226 Difference]: Without dead ends: 84 [2024-10-24 00:05:04,922 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 [2024-10-24 00:05:04,923 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-10-24 00:05:04,923 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] [2024-10-24 00:05:04,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-24 00:05:04,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2024-10-24 00:05:04,938 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) [2024-10-24 00:05:04,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 103 transitions. [2024-10-24 00:05:04,940 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 103 transitions. Word has length 38 [2024-10-24 00:05:04,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:04,940 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 103 transitions. [2024-10-24 00:05:04,940 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) [2024-10-24 00:05:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 103 transitions. [2024-10-24 00:05:04,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-24 00:05:04,943 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:04,943 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] [2024-10-24 00:05:04,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 00:05:05,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:05,144 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:05,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash -369399342, now seen corresponding path program 1 times [2024-10-24 00:05:05,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:05,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533870988] [2024-10-24 00:05:05,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:05,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:05,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 00:05:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:05,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 00:05:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:05,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 00:05:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:05,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:05:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:05,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:05:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 00:05:05,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:05,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533870988] [2024-10-24 00:05:05,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533870988] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:05:05,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210044936] [2024-10-24 00:05:05,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:05,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:05,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:05:05,224 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:05:05,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 00:05:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:05,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 00:05:05,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:05:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 00:05:05,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:05:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 00:05:05,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210044936] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:05:05,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:05:05,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 12 [2024-10-24 00:05:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956996539] [2024-10-24 00:05:05,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:05:05,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 00:05:05,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 00:05:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-10-24 00:05:05,371 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) [2024-10-24 00:05:05,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:05,518 INFO L93 Difference]: Finished difference Result 246 states and 303 transitions. [2024-10-24 00:05:05,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 00:05:05,518 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 [2024-10-24 00:05:05,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:05,520 INFO L225 Difference]: With dead ends: 246 [2024-10-24 00:05:05,520 INFO L226 Difference]: Without dead ends: 239 [2024-10-24 00:05:05,520 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 [2024-10-24 00:05:05,521 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 [2024-10-24 00:05:05,521 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] [2024-10-24 00:05:05,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-10-24 00:05:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 223. [2024-10-24 00:05:05,557 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) [2024-10-24 00:05:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 278 transitions. [2024-10-24 00:05:05,559 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 278 transitions. Word has length 41 [2024-10-24 00:05:05,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:05,559 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 278 transitions. [2024-10-24 00:05:05,559 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) [2024-10-24 00:05:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 278 transitions. [2024-10-24 00:05:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-24 00:05:05,561 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:05,563 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] [2024-10-24 00:05:05,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 00:05:05,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:05,764 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:05,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:05,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1199104068, now seen corresponding path program 1 times [2024-10-24 00:05:05,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:05,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321171822] [2024-10-24 00:05:05,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:05,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:05:05,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29148547] [2024-10-24 00:05:05,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:05,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:05,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:05:05,787 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:05:05,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 00:05:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:05,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-24 00:05:05,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:05:06,078 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 00:05:06,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:05:06,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:06,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321171822] [2024-10-24 00:05:06,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:05:06,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29148547] [2024-10-24 00:05:06,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29148547] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:05:06,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:05:06,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-10-24 00:05:06,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347114051] [2024-10-24 00:05:06,311 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 00:05:06,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 00:05:06,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:06,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 00:05:06,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-10-24 00:05:06,313 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) [2024-10-24 00:05:06,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:06,453 INFO L93 Difference]: Finished difference Result 298 states and 366 transitions. [2024-10-24 00:05:06,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 00:05:06,453 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 [2024-10-24 00:05:06,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:06,455 INFO L225 Difference]: With dead ends: 298 [2024-10-24 00:05:06,455 INFO L226 Difference]: Without dead ends: 186 [2024-10-24 00:05:06,456 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 [2024-10-24 00:05:06,456 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 [2024-10-24 00:05:06,457 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] [2024-10-24 00:05:06,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-10-24 00:05:06,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2024-10-24 00:05:06,475 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) [2024-10-24 00:05:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 226 transitions. [2024-10-24 00:05:06,476 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 226 transitions. Word has length 46 [2024-10-24 00:05:06,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:06,477 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 226 transitions. [2024-10-24 00:05:06,477 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) [2024-10-24 00:05:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 226 transitions. [2024-10-24 00:05:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-24 00:05:06,478 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:06,478 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] [2024-10-24 00:05:06,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 00:05:06,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:06,683 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:06,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:06,684 INFO L85 PathProgramCache]: Analyzing trace with hash 902121970, now seen corresponding path program 1 times [2024-10-24 00:05:06,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:06,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415935741] [2024-10-24 00:05:06,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:06,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:05:06,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409896796] [2024-10-24 00:05:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:06,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:06,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:05:06,698 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:05:06,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 00:05:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:06,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 00:05:06,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:05:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 00:05:06,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:05:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-24 00:05:06,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:06,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415935741] [2024-10-24 00:05:06,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:05:06,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409896796] [2024-10-24 00:05:06,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409896796] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 00:05:06,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:05:06,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-10-24 00:05:06,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298000334] [2024-10-24 00:05:06,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 00:05:06,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 00:05:06,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:06,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 00:05:06,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 00:05:06,842 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) [2024-10-24 00:05:06,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:06,887 INFO L93 Difference]: Finished difference Result 203 states and 243 transitions. [2024-10-24 00:05:06,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 00:05:06,887 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 [2024-10-24 00:05:06,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:06,889 INFO L225 Difference]: With dead ends: 203 [2024-10-24 00:05:06,889 INFO L226 Difference]: Without dead ends: 201 [2024-10-24 00:05:06,889 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 [2024-10-24 00:05:06,889 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 [2024-10-24 00:05:06,890 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] [2024-10-24 00:05:06,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-10-24 00:05:06,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-10-24 00:05:06,905 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) [2024-10-24 00:05:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 238 transitions. [2024-10-24 00:05:06,906 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 238 transitions. Word has length 46 [2024-10-24 00:05:06,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:06,907 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 238 transitions. [2024-10-24 00:05:06,907 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) [2024-10-24 00:05:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 238 transitions. [2024-10-24 00:05:06,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 00:05:06,907 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:06,908 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] [2024-10-24 00:05:06,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 00:05:07,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:07,112 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:07,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:07,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1064319211, now seen corresponding path program 1 times [2024-10-24 00:05:07,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:07,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138430764] [2024-10-24 00:05:07,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:07,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 00:05:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 00:05:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 00:05:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:05:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:05:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 00:05:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 00:05:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-24 00:05:07,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:07,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138430764] [2024-10-24 00:05:07,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138430764] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:05:07,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420293384] [2024-10-24 00:05:07,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:07,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:07,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:05:07,193 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:05:07,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 00:05:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 00:05:07,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:05:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 40 proven. 34 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-10-24 00:05:07,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:05:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-24 00:05:07,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420293384] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:05:07,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:05:07,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 12 [2024-10-24 00:05:07,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424089440] [2024-10-24 00:05:07,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:05:07,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 00:05:07,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:07,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 00:05:07,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-10-24 00:05:07,340 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) [2024-10-24 00:05:07,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:07,488 INFO L93 Difference]: Finished difference Result 318 states and 375 transitions. [2024-10-24 00:05:07,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 00:05:07,489 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 [2024-10-24 00:05:07,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:07,490 INFO L225 Difference]: With dead ends: 318 [2024-10-24 00:05:07,490 INFO L226 Difference]: Without dead ends: 220 [2024-10-24 00:05:07,491 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 [2024-10-24 00:05:07,491 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 [2024-10-24 00:05:07,492 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] [2024-10-24 00:05:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-10-24 00:05:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2024-10-24 00:05:07,507 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) [2024-10-24 00:05:07,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 247 transitions. [2024-10-24 00:05:07,508 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 247 transitions. Word has length 54 [2024-10-24 00:05:07,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:07,508 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 247 transitions. [2024-10-24 00:05:07,508 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) [2024-10-24 00:05:07,508 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 247 transitions. [2024-10-24 00:05:07,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 00:05:07,509 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:07,509 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] [2024-10-24 00:05:07,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 00:05:07,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-24 00:05:07,710 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:07,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:07,710 INFO L85 PathProgramCache]: Analyzing trace with hash -716710404, now seen corresponding path program 2 times [2024-10-24 00:05:07,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:07,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823638818] [2024-10-24 00:05:07,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:07,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 00:05:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 00:05:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-24 00:05:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 00:05:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 00:05:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 00:05:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 00:05:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 00:05:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-24 00:05:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:07,818 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-10-24 00:05:07,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:07,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823638818] [2024-10-24 00:05:07,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823638818] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:05:07,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130311130] [2024-10-24 00:05:07,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 00:05:07,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:07,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:05:07,821 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:05:07,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 00:05:07,862 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 00:05:07,863 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:05:07,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 00:05:07,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:05:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-10-24 00:05:07,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:05:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-10-24 00:05:08,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130311130] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:05:08,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 00:05:08,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 14 [2024-10-24 00:05:08,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678917985] [2024-10-24 00:05:08,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 00:05:08,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 00:05:08,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:08,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 00:05:08,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-10-24 00:05:08,022 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) [2024-10-24 00:05:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:08,114 INFO L93 Difference]: Finished difference Result 228 states and 260 transitions. [2024-10-24 00:05:08,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 00:05:08,115 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 [2024-10-24 00:05:08,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:08,116 INFO L225 Difference]: With dead ends: 228 [2024-10-24 00:05:08,116 INFO L226 Difference]: Without dead ends: 226 [2024-10-24 00:05:08,117 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 [2024-10-24 00:05:08,117 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 [2024-10-24 00:05:08,117 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] [2024-10-24 00:05:08,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-10-24 00:05:08,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2024-10-24 00:05:08,133 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) [2024-10-24 00:05:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2024-10-24 00:05:08,134 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 62 [2024-10-24 00:05:08,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:08,135 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2024-10-24 00:05:08,135 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) [2024-10-24 00:05:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2024-10-24 00:05:08,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 00:05:08,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:08,136 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] [2024-10-24 00:05:08,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 00:05:08,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-24 00:05:08,340 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:08,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1772176059, now seen corresponding path program 1 times [2024-10-24 00:05:08,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:08,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203453293] [2024-10-24 00:05:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:08,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:05:08,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337893578] [2024-10-24 00:05:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:08,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:08,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:05:08,354 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:05:08,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 00:05:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 00:05:08,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-24 00:05:08,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:05:08,753 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 31 proven. 26 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-10-24 00:05:08,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:05:13,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:13,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203453293] [2024-10-24 00:05:13,536 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:05:13,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337893578] [2024-10-24 00:05:13,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337893578] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 00:05:13,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 00:05:13,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-10-24 00:05:13,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667294961] [2024-10-24 00:05:13,536 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 00:05:13,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 00:05:13,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:13,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 00:05:13,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=296, Unknown=1, NotChecked=0, Total=380 [2024-10-24 00:05:13,537 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) [2024-10-24 00:05:13,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:13,962 INFO L93 Difference]: Finished difference Result 254 states and 286 transitions. [2024-10-24 00:05:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 00:05:13,963 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 [2024-10-24 00:05:13,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:13,964 INFO L225 Difference]: With dead ends: 254 [2024-10-24 00:05:13,964 INFO L226 Difference]: Without dead ends: 251 [2024-10-24 00:05:13,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=90, Invalid=329, Unknown=1, NotChecked=0, Total=420 [2024-10-24 00:05:13,965 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, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 00:05:13,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 369 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 00:05:13,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-10-24 00:05:13,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2024-10-24 00:05:14,000 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) [2024-10-24 00:05:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 278 transitions. [2024-10-24 00:05:14,004 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 278 transitions. Word has length 70 [2024-10-24 00:05:14,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:14,005 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 278 transitions. [2024-10-24 00:05:14,005 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) [2024-10-24 00:05:14,005 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 278 transitions. [2024-10-24 00:05:14,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-24 00:05:14,007 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 00:05:14,007 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] [2024-10-24 00:05:14,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 00:05:14,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-24 00:05:14,208 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 00:05:14,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 00:05:14,209 INFO L85 PathProgramCache]: Analyzing trace with hash 51517626, now seen corresponding path program 2 times [2024-10-24 00:05:14,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 00:05:14,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004021047] [2024-10-24 00:05:14,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 00:05:14,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 00:05:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 00:05:14,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942657503] [2024-10-24 00:05:14,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 00:05:14,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 00:05:14,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 00:05:14,250 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 00:05:14,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 00:05:14,316 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 00:05:14,316 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 00:05:14,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-24 00:05:14,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 00:05:14,934 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 28 proven. 24 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-24 00:05:14,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 00:05:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-24 00:05:15,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 00:05:15,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004021047] [2024-10-24 00:05:15,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 00:05:15,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942657503] [2024-10-24 00:05:15,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942657503] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 00:05:15,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 00:05:15,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2024-10-24 00:05:15,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339899750] [2024-10-24 00:05:15,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 00:05:15,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 00:05:15,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 00:05:15,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 00:05:15,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-10-24 00:05:15,506 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) [2024-10-24 00:05:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 00:05:15,921 INFO L93 Difference]: Finished difference Result 269 states and 308 transitions. [2024-10-24 00:05:15,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 00:05:15,921 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 [2024-10-24 00:05:15,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 00:05:15,922 INFO L225 Difference]: With dead ends: 269 [2024-10-24 00:05:15,922 INFO L226 Difference]: Without dead ends: 0 [2024-10-24 00:05:15,923 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 [2024-10-24 00:05:15,923 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 91 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 00:05:15,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 444 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 00:05:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-24 00:05:15,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-24 00:05:15,924 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) [2024-10-24 00:05:15,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-24 00:05:15,924 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2024-10-24 00:05:15,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 00:05:15,924 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 00:05:15,924 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) [2024-10-24 00:05:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-24 00:05:15,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-24 00:05:15,928 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-24 00:05:15,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-24 00:05:16,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 00:05:16,132 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 00:05:16,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-24 00:05:17,204 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 00:05:17,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:05:17 BoogieIcfgContainer [2024-10-24 00:05:17,221 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 00:05:17,222 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 00:05:17,222 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 00:05:17,222 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 00:05:17,222 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:05:02" (3/4) ... [2024-10-24 00:05:17,224 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 00:05:17,226 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-10-24 00:05:17,229 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-10-24 00:05:17,229 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-24 00:05:17,229 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 00:05:17,229 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-24 00:05:17,294 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 00:05:17,295 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 00:05:17,295 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 00:05:17,295 INFO L158 Benchmark]: Toolchain (without parser) took 15924.31ms. Allocated memory was 130.0MB in the beginning and 369.1MB in the end (delta: 239.1MB). Free memory was 62.8MB in the beginning and 192.1MB in the end (delta: -129.3MB). Peak memory consumption was 110.7MB. Max. memory is 16.1GB. [2024-10-24 00:05:17,295 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 00:05:17,296 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.21ms. Allocated memory was 130.0MB in the beginning and 226.5MB in the end (delta: 96.5MB). Free memory was 62.6MB in the beginning and 197.3MB in the end (delta: -134.8MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2024-10-24 00:05:17,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.40ms. Allocated memory is still 226.5MB. Free memory was 197.3MB in the beginning and 196.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 00:05:17,296 INFO L158 Benchmark]: Boogie Preprocessor took 34.25ms. Allocated memory is still 226.5MB. Free memory was 196.2MB in the beginning and 194.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 00:05:17,296 INFO L158 Benchmark]: RCFGBuilder took 286.85ms. Allocated memory is still 226.5MB. Free memory was 194.2MB in the beginning and 179.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-24 00:05:17,296 INFO L158 Benchmark]: TraceAbstraction took 15171.34ms. Allocated memory was 226.5MB in the beginning and 369.1MB in the end (delta: 142.6MB). Free memory was 179.5MB in the beginning and 196.3MB in the end (delta: -16.7MB). Peak memory consumption was 162.6MB. Max. memory is 16.1GB. [2024-10-24 00:05:17,297 INFO L158 Benchmark]: Witness Printer took 73.12ms. Allocated memory is still 369.1MB. Free memory was 196.3MB in the beginning and 192.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 00:05:17,298 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.21ms. Allocated memory was 130.0MB in the beginning and 226.5MB in the end (delta: 96.5MB). Free memory was 62.6MB in the beginning and 197.3MB in the end (delta: -134.8MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.40ms. Allocated memory is still 226.5MB. Free memory was 197.3MB in the beginning and 196.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.25ms. Allocated memory is still 226.5MB. Free memory was 196.2MB in the beginning and 194.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 286.85ms. Allocated memory is still 226.5MB. Free memory was 194.2MB in the beginning and 179.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 15171.34ms. Allocated memory was 226.5MB in the beginning and 369.1MB in the end (delta: 142.6MB). Free memory was 179.5MB in the beginning and 196.3MB in the end (delta: -16.7MB). Peak memory consumption was 162.6MB. Max. memory is 16.1GB. * Witness Printer took 73.12ms. Allocated memory is still 369.1MB. Free memory was 196.3MB in the beginning and 192.1MB in the end (delta: 4.2MB). 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: 14.0s, OverallIterations: 15, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 417 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 378 mSDsluCounter, 2251 SdHoareTripleChecker+Invalid, 1.1s 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, 434 ImplicationChecksByTransitivity, 5.7s 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, 0.3s SatisfiabilityAnalysisTime, 8.5s 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) && (counter == \old(counter))) RESULT: Ultimate proved your program to be correct! [2024-10-24 00:05:17,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE