./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound100.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 e3523bc8254ad35e64aad06fd6e3c84672a9aa19521e18482795d6584edb45d0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:43:53,006 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:43:53,074 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:43:53,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:43:53,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:43:53,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:43:53,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:43:53,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:43:53,104 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:43:53,105 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:43:53,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:43:53,106 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:43:53,106 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:43:53,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:43:53,108 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:43:53,108 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:43:53,108 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:43:53,109 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:43:53,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:43:53,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:43:53,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:43:53,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:43:53,116 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:43:53,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:43:53,116 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:43:53,116 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:43:53,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:43:53,117 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:43:53,117 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:43:53,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:43:53,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:43:53,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:43:53,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:43:53,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:43:53,118 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:43:53,118 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:43:53,118 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:43:53,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:43:53,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:43:53,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:43:53,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:43:53,119 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:43:53,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3523bc8254ad35e64aad06fd6e3c84672a9aa19521e18482795d6584edb45d0 [2024-11-09 22:43:53,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:43:53,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:43:53,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:43:53,344 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:43:53,344 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:43:53,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound100.c [2024-11-09 22:43:54,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:43:54,788 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:43:54,789 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound100.c [2024-11-09 22:43:54,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83c8df98f/4faa1c1bea6746369382177839b1aecc/FLAG1df3e8ee1 [2024-11-09 22:43:54,805 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83c8df98f/4faa1c1bea6746369382177839b1aecc [2024-11-09 22:43:54,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:43:54,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:43:54,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:43:54,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:43:54,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:43:54,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:43:54" (1/1) ... [2024-11-09 22:43:54,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4515e7e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:54, skipping insertion in model container [2024-11-09 22:43:54,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:43:54" (1/1) ... [2024-11-09 22:43:54,827 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:43:54,952 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound100.c[538,551] [2024-11-09 22:43:54,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:43:54,976 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:43:54,985 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound100.c[538,551] [2024-11-09 22:43:54,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:43:55,010 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:43:55,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55 WrapperNode [2024-11-09 22:43:55,010 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:43:55,011 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:43:55,012 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:43:55,012 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:43:55,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55" (1/1) ... [2024-11-09 22:43:55,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55" (1/1) ... [2024-11-09 22:43:55,038 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-11-09 22:43:55,041 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:43:55,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:43:55,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:43:55,042 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:43:55,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55" (1/1) ... [2024-11-09 22:43:55,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55" (1/1) ... [2024-11-09 22:43:55,055 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55" (1/1) ... [2024-11-09 22:43:55,067 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-09 22:43:55,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55" (1/1) ... [2024-11-09 22:43:55,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55" (1/1) ... [2024-11-09 22:43:55,073 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55" (1/1) ... [2024-11-09 22:43:55,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55" (1/1) ... [2024-11-09 22:43:55,075 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55" (1/1) ... [2024-11-09 22:43:55,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55" (1/1) ... [2024-11-09 22:43:55,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:43:55,081 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:43:55,081 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:43:55,081 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:43:55,082 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55" (1/1) ... [2024-11-09 22:43:55,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:43:55,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:43:55,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 22:43:55,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 22:43:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:43:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 22:43:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 22:43:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:43:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:43:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:43:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 22:43:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 22:43:55,192 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:43:55,194 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:43:55,406 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-09 22:43:55,406 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:43:55,428 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:43:55,428 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:43:55,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:43:55 BoogieIcfgContainer [2024-11-09 22:43:55,429 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:43:55,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:43:55,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:43:55,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:43:55,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:43:54" (1/3) ... [2024-11-09 22:43:55,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67076651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:43:55, skipping insertion in model container [2024-11-09 22:43:55,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:55" (2/3) ... [2024-11-09 22:43:55,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67076651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:43:55, skipping insertion in model container [2024-11-09 22:43:55,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:43:55" (3/3) ... [2024-11-09 22:43:55,443 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound100.c [2024-11-09 22:43:55,466 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:43:55,470 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:43:55,597 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:43:55,607 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;@159f3e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:43:55,626 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:43:55,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 22:43:55,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 22:43:55,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:43:55,643 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:43:55,643 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:43:55,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:43:55,650 INFO L85 PathProgramCache]: Analyzing trace with hash 614803326, now seen corresponding path program 1 times [2024-11-09 22:43:55,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:43:55,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439271865] [2024-11-09 22:43:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:43:55,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:43:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:55,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:43:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:55,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:43:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:55,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:43:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:43:55,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:43:55,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439271865] [2024-11-09 22:43:55,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439271865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:43:55,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:43:55,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:43:55,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919509353] [2024-11-09 22:43:55,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:43:55,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:43:55,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:43:55,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:43:55,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:43:55,825 INFO L87 Difference]: Start difference. First operand has 36 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:43:55,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:43:55,839 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2024-11-09 22:43:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:43:55,840 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-11-09 22:43:55,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:43:55,845 INFO L225 Difference]: With dead ends: 69 [2024-11-09 22:43:55,845 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 22:43:55,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:43:55,850 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:43:55,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:43:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 22:43:55,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 22:43:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 22:43:55,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-11-09 22:43:55,876 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 26 [2024-11-09 22:43:55,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:43:55,876 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-11-09 22:43:55,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 22:43:55,877 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-11-09 22:43:55,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 22:43:55,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:43:55,878 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:43:55,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:43:55,878 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:43:55,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:43:55,879 INFO L85 PathProgramCache]: Analyzing trace with hash 564228797, now seen corresponding path program 1 times [2024-11-09 22:43:55,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:43:55,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062788309] [2024-11-09 22:43:55,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:43:55,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:43:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:56,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:43:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:56,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:43:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:56,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:43:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:43:56,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:43:56,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062788309] [2024-11-09 22:43:56,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062788309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:43:56,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:43:56,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:43:56,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912089342] [2024-11-09 22:43:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:43:56,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:43:56,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:43:56,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:43:56,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:43:56,117 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 22:43:56,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:43:56,161 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2024-11-09 22:43:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:43:56,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2024-11-09 22:43:56,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:43:56,162 INFO L225 Difference]: With dead ends: 47 [2024-11-09 22:43:56,162 INFO L226 Difference]: Without dead ends: 44 [2024-11-09 22:43:56,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:43:56,164 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:43:56,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 137 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:43:56,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-09 22:43:56,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2024-11-09 22:43:56,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 22:43:56,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-11-09 22:43:56,171 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 26 [2024-11-09 22:43:56,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:43:56,172 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-11-09 22:43:56,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 22:43:56,172 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-11-09 22:43:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:43:56,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:43:56,173 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:43:56,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:43:56,173 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:43:56,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:43:56,174 INFO L85 PathProgramCache]: Analyzing trace with hash -451395543, now seen corresponding path program 1 times [2024-11-09 22:43:56,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:43:56,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118314854] [2024-11-09 22:43:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:43:56,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:43:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:56,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:43:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:56,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:43:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:56,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:43:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:56,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:43:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 22:43:56,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:43:56,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118314854] [2024-11-09 22:43:56,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118314854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:43:56,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:43:56,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:43:56,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228872917] [2024-11-09 22:43:56,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:43:56,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:43:56,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:43:56,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:43:56,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:43:56,259 INFO L87 Difference]: Start difference. First operand 36 states and 45 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 22:43:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:43:56,314 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2024-11-09 22:43:56,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:43:56,315 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2024-11-09 22:43:56,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:43:56,316 INFO L225 Difference]: With dead ends: 51 [2024-11-09 22:43:56,316 INFO L226 Difference]: Without dead ends: 48 [2024-11-09 22:43:56,316 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 [2024-11-09 22:43:56,317 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:43:56,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 134 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:43:56,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-09 22:43:56,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2024-11-09 22:43:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 22:43:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-11-09 22:43:56,323 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 31 [2024-11-09 22:43:56,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:43:56,324 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-11-09 22:43:56,324 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 22:43:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-11-09 22:43:56,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 22:43:56,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:43:56,325 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:43:56,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 22:43:56,325 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:43:56,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:43:56,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1637815805, now seen corresponding path program 1 times [2024-11-09 22:43:56,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:43:56,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776146633] [2024-11-09 22:43:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:43:56,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:43:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:43:56,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121954469] [2024-11-09 22:43:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:43:56,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:43:56,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:43:56,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:43:56,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:43:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:56,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:43:56,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:43:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 22:43:56,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:43:56,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:43:56,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776146633] [2024-11-09 22:43:56,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:43:56,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121954469] [2024-11-09 22:43:56,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121954469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:43:56,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:43:56,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:43:56,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677465208] [2024-11-09 22:43:56,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:43:56,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:43:56,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:43:56,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:43:56,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:43:56,484 INFO L87 Difference]: Start difference. First operand 40 states and 48 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, (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) [2024-11-09 22:43:56,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:43:56,548 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2024-11-09 22:43:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:43:56,549 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, (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 36 [2024-11-09 22:43:56,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:43:56,549 INFO L225 Difference]: With dead ends: 70 [2024-11-09 22:43:56,550 INFO L226 Difference]: Without dead ends: 55 [2024-11-09 22:43:56,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:43:56,550 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:43:56,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 136 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:43:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-09 22:43:56,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-09 22:43:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 states have internal predecessors, (39), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 22:43:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2024-11-09 22:43:56,564 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 36 [2024-11-09 22:43:56,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:43:56,564 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2024-11-09 22:43:56,565 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, (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) [2024-11-09 22:43:56,565 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2024-11-09 22:43:56,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 22:43:56,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:43:56,568 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:43:56,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 22:43:56,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:43:56,773 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:43:56,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:43:56,773 INFO L85 PathProgramCache]: Analyzing trace with hash 262091658, now seen corresponding path program 1 times [2024-11-09 22:43:56,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:43:56,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286193198] [2024-11-09 22:43:56,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:43:56,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:43:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:43:56,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849624707] [2024-11-09 22:43:56,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:43:56,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:43:56,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:43:56,810 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:43:56,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:43:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:56,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:43:56,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:43:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 22:43:56,954 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:43:56,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:43:56,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286193198] [2024-11-09 22:43:56,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:43:56,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849624707] [2024-11-09 22:43:56,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849624707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:43:56,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:43:56,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:43:56,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312945885] [2024-11-09 22:43:56,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:43:56,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:43:56,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:43:56,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:43:56,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:43:56,958 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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) [2024-11-09 22:43:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:43:57,018 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-11-09 22:43:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:43:57,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 44 [2024-11-09 22:43:57,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:43:57,021 INFO L225 Difference]: With dead ends: 70 [2024-11-09 22:43:57,021 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 22:43:57,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:43:57,023 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:43:57,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 118 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:43:57,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 22:43:57,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2024-11-09 22:43:57,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.170731707317073) internal successors, (48), 43 states have internal predecessors, (48), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 22:43:57,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2024-11-09 22:43:57,041 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 44 [2024-11-09 22:43:57,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:43:57,041 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2024-11-09 22:43:57,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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) [2024-11-09 22:43:57,042 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2024-11-09 22:43:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 22:43:57,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:43:57,042 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:43:57,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 22:43:57,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:43:57,244 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:43:57,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:43:57,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1164529390, now seen corresponding path program 1 times [2024-11-09 22:43:57,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:43:57,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440912396] [2024-11-09 22:43:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:43:57,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:43:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:43:57,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261165155] [2024-11-09 22:43:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:43:57,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:43:57,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:43:57,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:43:57,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:43:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:57,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 22:43:57,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:43:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-09 22:43:57,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:43:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-09 22:43:57,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:43:57,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440912396] [2024-11-09 22:43:57,525 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:43:57,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261165155] [2024-11-09 22:43:57,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261165155] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:43:57,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:43:57,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-09 22:43:57,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583525113] [2024-11-09 22:43:57,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:43:57,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:43:57,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:43:57,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:43:57,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:43:57,527 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-09 22:43:57,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:43:57,603 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2024-11-09 22:43:57,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:43:57,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 54 [2024-11-09 22:43:57,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:43:57,606 INFO L225 Difference]: With dead ends: 78 [2024-11-09 22:43:57,606 INFO L226 Difference]: Without dead ends: 75 [2024-11-09 22:43:57,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:43:57,607 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:43:57,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 128 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:43:57,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-09 22:43:57,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2024-11-09 22:43:57,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 49 states have internal predecessors, (53), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-09 22:43:57,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2024-11-09 22:43:57,620 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 54 [2024-11-09 22:43:57,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:43:57,620 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2024-11-09 22:43:57,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2024-11-09 22:43:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2024-11-09 22:43:57,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 22:43:57,621 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:43:57,621 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:43:57,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 22:43:57,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:43:57,826 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:43:57,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:43:57,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1672032700, now seen corresponding path program 1 times [2024-11-09 22:43:57,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:43:57,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522095910] [2024-11-09 22:43:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:43:57,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:43:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:57,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:43:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:57,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:43:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:57,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:43:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:57,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:43:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:57,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:43:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:57,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:43:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:58,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:43:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:58,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:43:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:58,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-09 22:43:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:58,021 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 22:43:58,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:43:58,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522095910] [2024-11-09 22:43:58,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522095910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:43:58,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:43:58,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:43:58,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197946345] [2024-11-09 22:43:58,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:43:58,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:43:58,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:43:58,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:43:58,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:43:58,025 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 22:43:58,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:43:58,073 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2024-11-09 22:43:58,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:43:58,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2024-11-09 22:43:58,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:43:58,075 INFO L225 Difference]: With dead ends: 83 [2024-11-09 22:43:58,076 INFO L226 Difference]: Without dead ends: 69 [2024-11-09 22:43:58,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:43:58,080 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 3 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:43:58,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 146 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:43:58,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-09 22:43:58,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-09 22:43:58,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 46 states have internal predecessors, (49), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-09 22:43:58,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2024-11-09 22:43:58,099 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 60 [2024-11-09 22:43:58,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:43:58,099 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2024-11-09 22:43:58,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 22:43:58,100 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2024-11-09 22:43:58,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 22:43:58,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:43:58,103 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2024-11-09 22:43:58,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 22:43:58,103 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:43:58,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:43:58,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1117702309, now seen corresponding path program 1 times [2024-11-09 22:43:58,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:43:58,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605926796] [2024-11-09 22:43:58,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:43:58,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:43:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:43:58,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690583394] [2024-11-09 22:43:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:43:58,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:43:58,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:43:58,144 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:43:58,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 22:43:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:43:58,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 22:43:58,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:43:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-09 22:43:58,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-09 22:44:00,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:00,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605926796] [2024-11-09 22:44:00,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:44:00,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690583394] [2024-11-09 22:44:00,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690583394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:00,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:44:00,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-09 22:44:00,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944695399] [2024-11-09 22:44:00,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:00,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 22:44:00,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:00,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 22:44:00,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:44:00,323 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 16 states have internal predecessors, (44), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-09 22:44:01,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:01,209 INFO L93 Difference]: Finished difference Result 168 states and 225 transitions. [2024-11-09 22:44:01,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 22:44:01,209 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 16 states have internal predecessors, (44), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) Word has length 76 [2024-11-09 22:44:01,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:01,211 INFO L225 Difference]: With dead ends: 168 [2024-11-09 22:44:01,211 INFO L226 Difference]: Without dead ends: 142 [2024-11-09 22:44:01,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:44:01,213 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 79 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:01,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 346 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 22:44:01,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-09 22:44:01,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 113. [2024-11-09 22:44:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 76 states have internal predecessors, (83), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-09 22:44:01,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 140 transitions. [2024-11-09 22:44:01,243 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 140 transitions. Word has length 76 [2024-11-09 22:44:01,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:01,243 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 140 transitions. [2024-11-09 22:44:01,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 16 states have internal predecessors, (44), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-09 22:44:01,244 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 140 transitions. [2024-11-09 22:44:01,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 22:44:01,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:01,245 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:44:01,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 22:44:01,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:01,450 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:01,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:01,450 INFO L85 PathProgramCache]: Analyzing trace with hash -584637425, now seen corresponding path program 1 times [2024-11-09 22:44:01,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:01,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041777529] [2024-11-09 22:44:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:01,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:01,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654469525] [2024-11-09 22:44:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:01,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:01,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:01,486 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:44:01,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 22:44:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:01,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 22:44:01,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:02,153 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 26 proven. 11 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-09 22:44:02,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-09 22:44:02,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:02,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041777529] [2024-11-09 22:44:02,699 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:44:02,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654469525] [2024-11-09 22:44:02,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654469525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:02,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:44:02,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-09 22:44:02,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517442051] [2024-11-09 22:44:02,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:02,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 22:44:02,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 22:44:02,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-11-09 22:44:02,701 INFO L87 Difference]: Start difference. First operand 113 states and 140 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2024-11-09 22:44:03,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:03,124 INFO L93 Difference]: Finished difference Result 156 states and 191 transitions. [2024-11-09 22:44:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 22:44:03,125 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) Word has length 87 [2024-11-09 22:44:03,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:03,126 INFO L225 Difference]: With dead ends: 156 [2024-11-09 22:44:03,126 INFO L226 Difference]: Without dead ends: 118 [2024-11-09 22:44:03,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:44:03,127 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 34 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:03,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 392 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:44:03,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-09 22:44:03,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 103. [2024-11-09 22:44:03,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.1363636363636365) internal successors, (75), 68 states have internal predecessors, (75), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-09 22:44:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 124 transitions. [2024-11-09 22:44:03,142 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 124 transitions. Word has length 87 [2024-11-09 22:44:03,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:03,142 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 124 transitions. [2024-11-09 22:44:03,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2024-11-09 22:44:03,143 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 124 transitions. [2024-11-09 22:44:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-09 22:44:03,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:03,144 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2024-11-09 22:44:03,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 22:44:03,348 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 [2024-11-09 22:44:03,349 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:03,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:03,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1210559409, now seen corresponding path program 2 times [2024-11-09 22:44:03,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:03,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822629749] [2024-11-09 22:44:03,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:03,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:44:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:44:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:44:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:44:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:44:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 22:44:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-09 22:44:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 22:44:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 22:44:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-09 22:44:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-09 22:44:03,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:03,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822629749] [2024-11-09 22:44:03,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822629749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:03,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530455225] [2024-11-09 22:44:03,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:44:03,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:03,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:03,534 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:44:03,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 22:44:03,583 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:44:03,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:44:03,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:44:03,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-09 22:44:03,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-09 22:44:03,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530455225] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:03,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:44:03,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-09 22:44:03,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221781399] [2024-11-09 22:44:03,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:03,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:44:03,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:03,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:44:03,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:44:03,712 INFO L87 Difference]: Start difference. First operand 103 states and 124 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-09 22:44:03,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:03,757 INFO L93 Difference]: Finished difference Result 134 states and 165 transitions. [2024-11-09 22:44:03,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:44:03,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 90 [2024-11-09 22:44:03,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:03,759 INFO L225 Difference]: With dead ends: 134 [2024-11-09 22:44:03,759 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 22:44:03,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:44:03,760 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:03,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:44:03,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 22:44:03,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-09 22:44:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 72 states have internal predecessors, (79), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-09 22:44:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2024-11-09 22:44:03,776 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 90 [2024-11-09 22:44:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:03,776 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2024-11-09 22:44:03,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-09 22:44:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2024-11-09 22:44:03,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-09 22:44:03,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:03,777 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:44:03,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 22:44:03,981 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 [2024-11-09 22:44:03,982 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:03,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:03,982 INFO L85 PathProgramCache]: Analyzing trace with hash 415838423, now seen corresponding path program 1 times [2024-11-09 22:44:03,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:03,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387873024] [2024-11-09 22:44:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:03,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:44:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:44:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:44:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:44:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:44:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 22:44:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-09 22:44:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 22:44:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 22:44:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-09 22:44:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-09 22:44:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-09 22:44:04,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:04,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387873024] [2024-11-09 22:44:04,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387873024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:04,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771034873] [2024-11-09 22:44:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:04,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:04,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:04,211 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) [2024-11-09 22:44:04,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 22:44:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:04,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 22:44:04,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-09 22:44:04,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-09 22:44:04,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771034873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:04,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:44:04,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 18 [2024-11-09 22:44:04,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089308913] [2024-11-09 22:44:04,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:04,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 22:44:04,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:04,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 22:44:04,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-09 22:44:04,856 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 15 states have internal predecessors, (54), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-09 22:44:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:05,143 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2024-11-09 22:44:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 22:44:05,144 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 15 states have internal predecessors, (54), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) Word has length 92 [2024-11-09 22:44:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:05,145 INFO L225 Difference]: With dead ends: 126 [2024-11-09 22:44:05,145 INFO L226 Difference]: Without dead ends: 106 [2024-11-09 22:44:05,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-09 22:44:05,146 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 32 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:05,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 434 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:44:05,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-09 22:44:05,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2024-11-09 22:44:05,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 63 states have (on average 1.126984126984127) internal successors, (71), 65 states have internal predecessors, (71), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-09 22:44:05,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2024-11-09 22:44:05,160 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 92 [2024-11-09 22:44:05,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:05,160 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2024-11-09 22:44:05,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 15 states have internal predecessors, (54), 10 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 11 states have call predecessors, (32), 10 states have call successors, (32) [2024-11-09 22:44:05,160 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2024-11-09 22:44:05,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 22:44:05,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:05,161 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:44:05,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 22:44:05,365 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 [2024-11-09 22:44:05,366 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:05,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:05,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1243520162, now seen corresponding path program 1 times [2024-11-09 22:44:05,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:05,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469616437] [2024-11-09 22:44:05,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:05,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:44:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:44:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:44:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:44:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:44:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 22:44:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-09 22:44:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 22:44:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 22:44:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-09 22:44:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-09 22:44:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-09 22:44:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-09 22:44:05,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:05,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469616437] [2024-11-09 22:44:05,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469616437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:05,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894531909] [2024-11-09 22:44:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:05,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:05,452 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) [2024-11-09 22:44:05,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 22:44:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:05,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 22:44:05,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-11-09 22:44:05,530 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:44:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894531909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:44:05,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:44:05,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-09 22:44:05,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438428712] [2024-11-09 22:44:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:44:05,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:44:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:05,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:44:05,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:44:05,532 INFO L87 Difference]: Start difference. First operand 98 states and 116 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-09 22:44:05,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:05,576 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2024-11-09 22:44:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:44:05,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 96 [2024-11-09 22:44:05,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:05,578 INFO L225 Difference]: With dead ends: 106 [2024-11-09 22:44:05,578 INFO L226 Difference]: Without dead ends: 93 [2024-11-09 22:44:05,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:44:05,578 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 10 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:05,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 97 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:44:05,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-09 22:44:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-09 22:44:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 60 states have (on average 1.1) internal successors, (66), 61 states have internal predecessors, (66), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 22:44:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2024-11-09 22:44:05,591 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 96 [2024-11-09 22:44:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:05,591 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2024-11-09 22:44:05,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-09 22:44:05,591 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2024-11-09 22:44:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 22:44:05,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:05,592 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:44:05,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 22:44:05,792 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 [2024-11-09 22:44:05,793 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:05,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:05,794 INFO L85 PathProgramCache]: Analyzing trace with hash -80949632, now seen corresponding path program 3 times [2024-11-09 22:44:05,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:05,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062267348] [2024-11-09 22:44:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:05,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:05,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821798169] [2024-11-09 22:44:05,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:44:05,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:05,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:05,828 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) [2024-11-09 22:44:05,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 22:44:05,882 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 22:44:05,883 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:44:05,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 22:44:05,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 37 proven. 55 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-09 22:44:06,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 37 proven. 55 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-09 22:44:22,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:22,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062267348] [2024-11-09 22:44:22,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:44:22,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821798169] [2024-11-09 22:44:22,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821798169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:22,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:44:22,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2024-11-09 22:44:22,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374260877] [2024-11-09 22:44:22,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:22,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 22:44:22,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:22,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 22:44:22,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:44:22,338 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) [2024-11-09 22:44:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:29,245 INFO L93 Difference]: Finished difference Result 179 states and 226 transitions. [2024-11-09 22:44:29,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 22:44:29,246 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) Word has length 108 [2024-11-09 22:44:29,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:29,247 INFO L225 Difference]: With dead ends: 179 [2024-11-09 22:44:29,247 INFO L226 Difference]: Without dead ends: 154 [2024-11-09 22:44:29,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:44:29,248 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 61 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:29,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 565 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 22:44:29,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-09 22:44:29,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2024-11-09 22:44:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.1) internal successors, (99), 94 states have internal predecessors, (99), 36 states have call successors, (36), 13 states have call predecessors, (36), 13 states have return successors, (35), 32 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-09 22:44:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 170 transitions. [2024-11-09 22:44:29,272 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 170 transitions. Word has length 108 [2024-11-09 22:44:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:29,272 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 170 transitions. [2024-11-09 22:44:29,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 20 states have internal predecessors, (60), 12 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 10 states have call predecessors, (29), 10 states have call successors, (29) [2024-11-09 22:44:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 170 transitions. [2024-11-09 22:44:29,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 22:44:29,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:29,273 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:44:29,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 22:44:29,474 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 [2024-11-09 22:44:29,474 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:29,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash -317950124, now seen corresponding path program 2 times [2024-11-09 22:44:29,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:29,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508058037] [2024-11-09 22:44:29,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:29,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:29,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748424660] [2024-11-09 22:44:29,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:44:29,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:29,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:29,516 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) [2024-11-09 22:44:29,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 22:44:29,586 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:44:29,586 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:44:29,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 22:44:29,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 85 proven. 57 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2024-11-09 22:44:30,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:30,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:30,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508058037] [2024-11-09 22:44:30,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:44:30,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748424660] [2024-11-09 22:44:30,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748424660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:30,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:44:30,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-09 22:44:30,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296823045] [2024-11-09 22:44:30,778 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:30,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 22:44:30,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:30,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 22:44:30,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-11-09 22:44:30,779 INFO L87 Difference]: Start difference. First operand 140 states and 170 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 22:44:31,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:31,176 INFO L93 Difference]: Finished difference Result 185 states and 220 transitions. [2024-11-09 22:44:31,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 22:44:31,176 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) Word has length 119 [2024-11-09 22:44:31,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:31,178 INFO L225 Difference]: With dead ends: 185 [2024-11-09 22:44:31,178 INFO L226 Difference]: Without dead ends: 163 [2024-11-09 22:44:31,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2024-11-09 22:44:31,179 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:31,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 612 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:44:31,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-09 22:44:31,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2024-11-09 22:44:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 105 states have (on average 1.0857142857142856) internal successors, (114), 110 states have internal predecessors, (114), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (38), 34 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-09 22:44:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 191 transitions. [2024-11-09 22:44:31,212 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 191 transitions. Word has length 119 [2024-11-09 22:44:31,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:31,212 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 191 transitions. [2024-11-09 22:44:31,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 22:44:31,212 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 191 transitions. [2024-11-09 22:44:31,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 22:44:31,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:31,213 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:44:31,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 22:44:31,413 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 [2024-11-09 22:44:31,414 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:31,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:31,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1162421995, now seen corresponding path program 1 times [2024-11-09 22:44:31,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:31,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552959350] [2024-11-09 22:44:31,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:31,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:31,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36089966] [2024-11-09 22:44:31,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:31,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:31,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:31,440 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) [2024-11-09 22:44:31,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 22:44:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:31,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 22:44:31,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 64 proven. 78 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2024-11-09 22:44:32,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:34,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:34,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552959350] [2024-11-09 22:44:34,146 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:44:34,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36089966] [2024-11-09 22:44:34,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36089966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:34,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:44:34,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-09 22:44:34,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861703793] [2024-11-09 22:44:34,147 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:34,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 22:44:34,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:34,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 22:44:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-09 22:44:34,148 INFO L87 Difference]: Start difference. First operand 162 states and 191 transitions. Second operand has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 22:44:34,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:34,514 INFO L93 Difference]: Finished difference Result 179 states and 206 transitions. [2024-11-09 22:44:34,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 22:44:34,514 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) Word has length 119 [2024-11-09 22:44:34,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:34,515 INFO L225 Difference]: With dead ends: 179 [2024-11-09 22:44:34,515 INFO L226 Difference]: Without dead ends: 176 [2024-11-09 22:44:34,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2024-11-09 22:44:34,516 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 4 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:34,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 456 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:44:34,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-09 22:44:34,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 164. [2024-11-09 22:44:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 107 states have (on average 1.0841121495327102) internal successors, (116), 113 states have internal predecessors, (116), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-09 22:44:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 191 transitions. [2024-11-09 22:44:34,545 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 191 transitions. Word has length 119 [2024-11-09 22:44:34,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:34,545 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 191 transitions. [2024-11-09 22:44:34,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.466666666666667) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2024-11-09 22:44:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 191 transitions. [2024-11-09 22:44:34,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-09 22:44:34,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:34,546 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:44:34,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 22:44:34,750 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 [2024-11-09 22:44:34,750 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:34,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:34,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1207836850, now seen corresponding path program 2 times [2024-11-09 22:44:34,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:34,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016814327] [2024-11-09 22:44:34,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:34,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:44:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,142 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:44:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:44:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:44:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:44:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 22:44:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-09 22:44:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 22:44:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 22:44:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-09 22:44:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-09 22:44:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-09 22:44:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-09 22:44:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-09 22:44:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-11-09 22:44:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-09 22:44:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 32 proven. 34 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2024-11-09 22:44:35,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:35,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016814327] [2024-11-09 22:44:35,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016814327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:35,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685149429] [2024-11-09 22:44:35,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:44:35,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:35,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:35,184 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:44:35,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 22:44:35,239 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:44:35,239 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:44:35,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 22:44:35,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:35,503 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 52 proven. 59 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-09 22:44:35,503 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 52 proven. 59 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-09 22:44:36,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685149429] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:36,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:44:36,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 24 [2024-11-09 22:44:36,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326290755] [2024-11-09 22:44:36,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:36,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 22:44:36,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:36,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 22:44:36,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-11-09 22:44:36,218 INFO L87 Difference]: Start difference. First operand 164 states and 191 transitions. Second operand has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 21 states have internal predecessors, (73), 17 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (44), 17 states have call predecessors, (44), 17 states have call successors, (44) [2024-11-09 22:44:36,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:36,768 INFO L93 Difference]: Finished difference Result 176 states and 204 transitions. [2024-11-09 22:44:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 22:44:36,769 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 21 states have internal predecessors, (73), 17 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (44), 17 states have call predecessors, (44), 17 states have call successors, (44) Word has length 124 [2024-11-09 22:44:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:36,770 INFO L225 Difference]: With dead ends: 176 [2024-11-09 22:44:36,770 INFO L226 Difference]: Without dead ends: 127 [2024-11-09 22:44:36,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-11-09 22:44:36,771 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 26 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:36,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 617 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 22:44:36,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-09 22:44:36,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-09 22:44:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 82 states have (on average 1.0853658536585367) internal successors, (89), 86 states have internal predecessors, (89), 30 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-09 22:44:36,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2024-11-09 22:44:36,801 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 124 [2024-11-09 22:44:36,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:36,801 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2024-11-09 22:44:36,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0416666666666665) internal successors, (73), 21 states have internal predecessors, (73), 17 states have call successors, (46), 3 states have call predecessors, (46), 2 states have return successors, (44), 17 states have call predecessors, (44), 17 states have call successors, (44) [2024-11-09 22:44:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2024-11-09 22:44:36,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-09 22:44:36,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:36,803 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:44:36,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 22:44:37,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 22:44:37,007 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:37,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1158616771, now seen corresponding path program 3 times [2024-11-09 22:44:37,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:37,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190073603] [2024-11-09 22:44:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:37,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:44:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:44:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:44:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:44:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:44:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 22:44:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-09 22:44:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 22:44:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 22:44:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-09 22:44:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-09 22:44:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 22:44:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-09 22:44:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-09 22:44:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-09 22:44:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-11-09 22:44:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-09 22:44:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-11-09 22:44:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:37,187 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 54 proven. 34 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2024-11-09 22:44:37,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:37,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190073603] [2024-11-09 22:44:37,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190073603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:37,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827036338] [2024-11-09 22:44:37,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:44:37,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:37,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:37,189 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:44:37,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 22:44:37,239 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 22:44:37,239 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:44:37,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 22:44:37,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 135 proven. 37 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2024-11-09 22:44:37,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2024-11-09 22:44:37,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827036338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:37,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:44:37,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 8] total 23 [2024-11-09 22:44:37,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280232169] [2024-11-09 22:44:37,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:37,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 22:44:37,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:37,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 22:44:37,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2024-11-09 22:44:37,747 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand has 23 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 18 states have internal predecessors, (75), 13 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (43), 12 states have call predecessors, (43), 10 states have call successors, (43) [2024-11-09 22:44:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:38,651 INFO L93 Difference]: Finished difference Result 154 states and 174 transitions. [2024-11-09 22:44:38,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 22:44:38,651 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 18 states have internal predecessors, (75), 13 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (43), 12 states have call predecessors, (43), 10 states have call successors, (43) Word has length 137 [2024-11-09 22:44:38,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:38,652 INFO L225 Difference]: With dead ends: 154 [2024-11-09 22:44:38,652 INFO L226 Difference]: Without dead ends: 145 [2024-11-09 22:44:38,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=236, Invalid=1170, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 22:44:38,653 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 45 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:38,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 473 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 22:44:38,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-09 22:44:38,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-09 22:44:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 98 states have internal predecessors, (103), 30 states have call successors, (30), 18 states have call predecessors, (30), 18 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-09 22:44:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2024-11-09 22:44:38,687 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 137 [2024-11-09 22:44:38,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:38,687 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2024-11-09 22:44:38,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 18 states have internal predecessors, (75), 13 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (43), 12 states have call predecessors, (43), 10 states have call successors, (43) [2024-11-09 22:44:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2024-11-09 22:44:38,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-09 22:44:38,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:38,689 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:44:38,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 22:44:38,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 22:44:38,893 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:38,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:38,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1625617691, now seen corresponding path program 4 times [2024-11-09 22:44:38,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:38,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187424492] [2024-11-09 22:44:38,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:38,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:38,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342880404] [2024-11-09 22:44:38,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:44:38,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:38,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:38,925 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:44:38,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 22:44:38,994 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:44:38,994 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:44:38,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-09 22:44:38,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 62 proven. 88 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2024-11-09 22:44:39,789 INFO L311 TraceCheckSpWp]: Computing backward predicates...