./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound50.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_valuebound50.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 a3c408aeb75b378569a9828f29f37caa03495bee0afeec4c4af831c79f34806f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:44:06,870 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:44:06,952 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:44:06,956 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:44:06,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:44:06,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:44:06,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:44:06,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:44:06,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:44:06,990 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:44:06,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:44:06,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:44:06,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:44:06,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:44:06,993 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:44:06,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:44:06,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:44:06,994 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:44:06,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:44:06,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:44:06,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:44:06,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:44:07,000 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:44:07,000 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:44:07,001 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:44:07,001 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:44:07,001 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:44:07,002 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:44:07,002 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:44:07,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:44:07,003 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:44:07,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:44:07,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:44:07,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:44:07,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:44:07,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:44:07,004 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:44:07,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:44:07,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:44:07,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:44:07,005 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:44:07,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:44:07,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3c408aeb75b378569a9828f29f37caa03495bee0afeec4c4af831c79f34806f [2024-11-09 22:44:07,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:44:07,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:44:07,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:44:07,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:44:07,303 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:44:07,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound50.c [2024-11-09 22:44:08,727 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:44:08,908 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:44:08,909 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound50.c [2024-11-09 22:44:08,915 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf365229/9d91e79ce79b4e5e8675d629d0f5c41b/FLAG031b1fcac [2024-11-09 22:44:08,931 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdf365229/9d91e79ce79b4e5e8675d629d0f5c41b [2024-11-09 22:44:08,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:44:08,937 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:44:08,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:44:08,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:44:08,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:44:08,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:08" (1/1) ... [2024-11-09 22:44:08,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fad4afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:08, skipping insertion in model container [2024-11-09 22:44:08,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:08" (1/1) ... [2024-11-09 22:44:08,964 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:44:09,156 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_valuebound50.c[538,551] [2024-11-09 22:44:09,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:44:09,186 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:44:09,196 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_valuebound50.c[538,551] [2024-11-09 22:44:09,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:44:09,223 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:44:09,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09 WrapperNode [2024-11-09 22:44:09,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:44:09,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:44:09,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:44:09,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:44:09,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09" (1/1) ... [2024-11-09 22:44:09,239 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09" (1/1) ... [2024-11-09 22:44:09,258 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-11-09 22:44:09,258 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:44:09,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:44:09,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:44:09,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:44:09,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09" (1/1) ... [2024-11-09 22:44:09,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09" (1/1) ... [2024-11-09 22:44:09,274 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09" (1/1) ... [2024-11-09 22:44:09,286 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 22:44:09,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09" (1/1) ... [2024-11-09 22:44:09,287 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09" (1/1) ... [2024-11-09 22:44:09,292 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09" (1/1) ... [2024-11-09 22:44:09,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09" (1/1) ... [2024-11-09 22:44:09,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09" (1/1) ... [2024-11-09 22:44:09,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09" (1/1) ... [2024-11-09 22:44:09,299 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:44:09,300 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:44:09,300 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:44:09,300 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:44:09,301 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09" (1/1) ... [2024-11-09 22:44:09,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:44:09,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:09,337 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 22:44:09,340 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 22:44:09,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:44:09,387 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 22:44:09,387 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 22:44:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:44:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:44:09,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:44:09,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 22:44:09,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 22:44:09,453 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:44:09,458 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:44:09,633 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-09 22:44:09,633 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:44:09,646 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:44:09,646 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:44:09,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:44:09 BoogieIcfgContainer [2024-11-09 22:44:09,647 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:44:09,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:44:09,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:44:09,665 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:44:09,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:44:08" (1/3) ... [2024-11-09 22:44:09,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:09, skipping insertion in model container [2024-11-09 22:44:09,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:09" (2/3) ... [2024-11-09 22:44:09,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:09, skipping insertion in model container [2024-11-09 22:44:09,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:44:09" (3/3) ... [2024-11-09 22:44:09,668 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound50.c [2024-11-09 22:44:09,681 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:44:09,681 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:44:09,727 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:44:09,733 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;@148e598b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:44:09,734 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:44:09,738 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 22:44:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 22:44:09,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:09,746 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 22:44:09,746 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:09,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash 614803326, now seen corresponding path program 1 times [2024-11-09 22:44:09,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:09,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177285815] [2024-11-09 22:44:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:09,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:09,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:09,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:09,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:09,912 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 22:44:09,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:09,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177285815] [2024-11-09 22:44:09,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177285815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:44:09,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:44:09,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:44:09,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277510454] [2024-11-09 22:44:09,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:44:09,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:44:09,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:09,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:44:09,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:44:09,942 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 22:44:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:09,966 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2024-11-09 22:44:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:44:09,968 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 22:44:09,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:09,974 INFO L225 Difference]: With dead ends: 69 [2024-11-09 22:44:09,974 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 22:44:09,978 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 22:44:09,981 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 22:44:09,982 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 22:44:09,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 22:44:10,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 22:44:10,012 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 22:44:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-11-09 22:44:10,015 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 26 [2024-11-09 22:44:10,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:10,016 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-11-09 22:44:10,016 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 22:44:10,016 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-11-09 22:44:10,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 22:44:10,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:10,018 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 22:44:10,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:44:10,019 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:10,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash 564228797, now seen corresponding path program 1 times [2024-11-09 22:44:10,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:10,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871836444] [2024-11-09 22:44:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:10,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:10,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:10,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:10,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:10,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:10,267 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 22:44:10,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:10,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871836444] [2024-11-09 22:44:10,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871836444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:44:10,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:44:10,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:44:10,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382823079] [2024-11-09 22:44:10,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:44:10,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:44:10,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:10,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:44:10,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:44:10,275 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 22:44:10,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:10,350 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2024-11-09 22:44:10,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:44:10,354 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 22:44:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:10,356 INFO L225 Difference]: With dead ends: 47 [2024-11-09 22:44:10,357 INFO L226 Difference]: Without dead ends: 44 [2024-11-09 22:44:10,357 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 22:44:10,359 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 22:44:10,359 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 22:44:10,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-09 22:44:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2024-11-09 22:44:10,376 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 22:44:10,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2024-11-09 22:44:10,378 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 26 [2024-11-09 22:44:10,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:10,379 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2024-11-09 22:44:10,379 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 22:44:10,379 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2024-11-09 22:44:10,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-09 22:44:10,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:10,380 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 22:44:10,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:44:10,380 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:10,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:10,383 INFO L85 PathProgramCache]: Analyzing trace with hash -451395543, now seen corresponding path program 1 times [2024-11-09 22:44:10,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:10,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626924739] [2024-11-09 22:44:10,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:10,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:10,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:10,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:10,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:10,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:44:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:10,565 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 22:44:10,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:10,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626924739] [2024-11-09 22:44:10,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626924739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:44:10,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:44:10,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:44:10,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904826761] [2024-11-09 22:44:10,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:44:10,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:44:10,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:10,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:44:10,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:44:10,572 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 22:44:10,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:10,651 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2024-11-09 22:44:10,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:44:10,651 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 22:44:10,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:10,652 INFO L225 Difference]: With dead ends: 51 [2024-11-09 22:44:10,653 INFO L226 Difference]: Without dead ends: 48 [2024-11-09 22:44:10,655 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 22:44:10,656 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:10,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 134 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:44:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-09 22:44:10,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2024-11-09 22:44:10,668 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 22:44:10,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2024-11-09 22:44:10,669 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 31 [2024-11-09 22:44:10,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:10,670 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2024-11-09 22:44:10,670 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 22:44:10,670 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2024-11-09 22:44:10,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 22:44:10,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:10,672 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 22:44:10,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 22:44:10,672 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:10,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1637815805, now seen corresponding path program 1 times [2024-11-09 22:44:10,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:10,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788177488] [2024-11-09 22:44:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:10,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:10,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806874477] [2024-11-09 22:44:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:10,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:10,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:10,711 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 22:44:10,712 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 22:44:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:10,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:44:10,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:10,928 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 22:44:10,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:44:10,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:10,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788177488] [2024-11-09 22:44:10,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:44:10,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806874477] [2024-11-09 22:44:10,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806874477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:44:10,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:44:10,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:44:10,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386720337] [2024-11-09 22:44:10,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:44:10,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:44:10,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:10,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:44:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:44:10,936 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 22:44:11,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:11,020 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2024-11-09 22:44:11,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:44:11,021 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 22:44:11,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:11,024 INFO L225 Difference]: With dead ends: 70 [2024-11-09 22:44:11,024 INFO L226 Difference]: Without dead ends: 55 [2024-11-09 22:44:11,025 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 22:44:11,027 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:11,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 136 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:44:11,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-09 22:44:11,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-09 22:44:11,061 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 22:44:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2024-11-09 22:44:11,063 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 36 [2024-11-09 22:44:11,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:11,063 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2024-11-09 22:44:11,064 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 22:44:11,064 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2024-11-09 22:44:11,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 22:44:11,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:11,065 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 22:44:11,083 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 22:44:11,266 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 22:44:11,267 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:11,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:11,267 INFO L85 PathProgramCache]: Analyzing trace with hash 262091658, now seen corresponding path program 1 times [2024-11-09 22:44:11,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:11,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604301509] [2024-11-09 22:44:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:11,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:11,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174322229] [2024-11-09 22:44:11,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:11,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:11,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:11,300 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 22:44:11,304 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 22:44:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:11,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:44:11,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:11,463 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 22:44:11,465 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:44:11,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:11,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604301509] [2024-11-09 22:44:11,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:44:11,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174322229] [2024-11-09 22:44:11,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174322229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:44:11,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:44:11,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:44:11,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405722704] [2024-11-09 22:44:11,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:44:11,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:44:11,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:11,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:44:11,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:44:11,469 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 22:44:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:11,544 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2024-11-09 22:44:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:44:11,545 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 22:44:11,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:11,547 INFO L225 Difference]: With dead ends: 70 [2024-11-09 22:44:11,548 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 22:44:11,548 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 22:44:11,551 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:11,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 118 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 22:44:11,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 22:44:11,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2024-11-09 22:44:11,565 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 22:44:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2024-11-09 22:44:11,566 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 44 [2024-11-09 22:44:11,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:11,567 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2024-11-09 22:44:11,567 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 22:44:11,567 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2024-11-09 22:44:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 22:44:11,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:11,569 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 22:44:11,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 22:44:11,772 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 22:44:11,773 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:11,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:11,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1164529390, now seen corresponding path program 1 times [2024-11-09 22:44:11,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:11,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606019440] [2024-11-09 22:44:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:11,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:11,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472462841] [2024-11-09 22:44:11,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:11,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:11,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:11,797 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 22:44:11,798 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 22:44:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:11,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 22:44:11,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:12,003 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 22:44:12,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:12,138 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 22:44:12,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:12,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606019440] [2024-11-09 22:44:12,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:44:12,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472462841] [2024-11-09 22:44:12,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472462841] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:12,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:44:12,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-09 22:44:12,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004052812] [2024-11-09 22:44:12,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:44:12,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:44:12,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:12,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:44:12,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:44:12,142 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 22:44:12,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:12,251 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2024-11-09 22:44:12,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:44:12,251 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 22:44:12,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:12,254 INFO L225 Difference]: With dead ends: 78 [2024-11-09 22:44:12,257 INFO L226 Difference]: Without dead ends: 75 [2024-11-09 22:44:12,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 22:44:12,258 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 22:44:12,259 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 22:44:12,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-09 22:44:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2024-11-09 22:44:12,277 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 22:44:12,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2024-11-09 22:44:12,281 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 54 [2024-11-09 22:44:12,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:12,281 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2024-11-09 22:44:12,281 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 22:44:12,281 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2024-11-09 22:44:12,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 22:44:12,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:12,283 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 22:44:12,302 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 22:44:12,489 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 22:44:12,490 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:12,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:12,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1672032700, now seen corresponding path program 1 times [2024-11-09 22:44:12,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:12,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732697278] [2024-11-09 22:44:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:12,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:12,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:12,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:12,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:12,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:44:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:12,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:44:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:12,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:44:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:12,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:44:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:12,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:44:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:12,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-09 22:44:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:12,672 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 22:44:12,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:12,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732697278] [2024-11-09 22:44:12,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732697278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:44:12,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:44:12,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 22:44:12,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534168809] [2024-11-09 22:44:12,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:44:12,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:44:12,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:12,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:44:12,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:44:12,677 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 22:44:12,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:12,738 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2024-11-09 22:44:12,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:44:12,738 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 22:44:12,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:12,740 INFO L225 Difference]: With dead ends: 83 [2024-11-09 22:44:12,740 INFO L226 Difference]: Without dead ends: 69 [2024-11-09 22:44:12,740 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 22:44:12,741 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 22:44:12,741 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 22:44:12,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-09 22:44:12,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-09 22:44:12,751 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 22:44:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2024-11-09 22:44:12,752 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 60 [2024-11-09 22:44:12,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:12,753 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2024-11-09 22:44:12,753 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 22:44:12,753 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2024-11-09 22:44:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 22:44:12,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:12,755 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 22:44:12,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 22:44:12,755 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:12,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:12,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1117702309, now seen corresponding path program 1 times [2024-11-09 22:44:12,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:12,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881094735] [2024-11-09 22:44:12,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:12,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:12,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047429361] [2024-11-09 22:44:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:12,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:12,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:12,783 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 22:44:12,785 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 22:44:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:12,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 22:44:12,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:13,531 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 22:44:13,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:15,728 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 22:44:15,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:15,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881094735] [2024-11-09 22:44:15,729 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:44:15,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047429361] [2024-11-09 22:44:15,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047429361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:15,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:44:15,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-09 22:44:15,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580797200] [2024-11-09 22:44:15,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:15,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 22:44:15,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:15,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 22:44:15,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-09 22:44:15,733 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 22:44:16,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:16,937 INFO L93 Difference]: Finished difference Result 168 states and 225 transitions. [2024-11-09 22:44:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 22:44:16,937 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 22:44:16,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:16,940 INFO L225 Difference]: With dead ends: 168 [2024-11-09 22:44:16,940 INFO L226 Difference]: Without dead ends: 142 [2024-11-09 22:44:16,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:44:16,941 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 79 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:16,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 346 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 22:44:16,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-09 22:44:16,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 113. [2024-11-09 22:44:16,977 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 22:44:16,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 140 transitions. [2024-11-09 22:44:16,978 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 140 transitions. Word has length 76 [2024-11-09 22:44:16,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:16,978 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 140 transitions. [2024-11-09 22:44:16,979 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 22:44:16,979 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 140 transitions. [2024-11-09 22:44:16,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 22:44:16,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:16,981 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 22:44:16,997 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 22:44:17,181 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 22:44:17,181 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:17,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:17,182 INFO L85 PathProgramCache]: Analyzing trace with hash -584637425, now seen corresponding path program 1 times [2024-11-09 22:44:17,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:17,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549977305] [2024-11-09 22:44:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:17,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:17,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963749372] [2024-11-09 22:44:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:17,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:17,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:17,208 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 22:44:17,210 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 22:44:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:17,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 22:44:17,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:17,779 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 22:44:17,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:18,502 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 22:44:18,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:18,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549977305] [2024-11-09 22:44:18,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:44:18,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963749372] [2024-11-09 22:44:18,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963749372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:18,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:44:18,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-09 22:44:18,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836114764] [2024-11-09 22:44:18,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:18,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 22:44:18,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:18,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 22:44:18,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-11-09 22:44:18,506 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 22:44:19,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:19,039 INFO L93 Difference]: Finished difference Result 156 states and 191 transitions. [2024-11-09 22:44:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 22:44:19,040 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 22:44:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:19,041 INFO L225 Difference]: With dead ends: 156 [2024-11-09 22:44:19,042 INFO L226 Difference]: Without dead ends: 118 [2024-11-09 22:44:19,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:44:19,044 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 34 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 22:44:19,045 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 22:44:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-09 22:44:19,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 103. [2024-11-09 22:44:19,074 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 22:44:19,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 124 transitions. [2024-11-09 22:44:19,077 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 124 transitions. Word has length 87 [2024-11-09 22:44:19,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:19,077 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 124 transitions. [2024-11-09 22:44:19,077 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 22:44:19,078 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 124 transitions. [2024-11-09 22:44:19,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-09 22:44:19,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:19,082 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 22:44:19,096 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 22:44:19,282 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 22:44:19,282 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:19,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:19,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1210559409, now seen corresponding path program 2 times [2024-11-09 22:44:19,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:19,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746388758] [2024-11-09 22:44:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:19,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:44:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:44:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:44:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:44:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:44:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 22:44:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-09 22:44:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 22:44:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 22:44:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-09 22:44:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:19,575 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 22:44:19,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:19,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746388758] [2024-11-09 22:44:19,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746388758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:19,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040919606] [2024-11-09 22:44:19,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:44:19,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:19,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:19,580 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 22:44:19,582 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 22:44:19,638 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:44:19,638 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:44:19,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:44:19,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:19,677 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 22:44:19,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:19,767 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 22:44:19,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040919606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:19,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:44:19,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-09 22:44:19,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696534415] [2024-11-09 22:44:19,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:19,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:44:19,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:19,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:44:19,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 22:44:19,770 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 22:44:19,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:19,830 INFO L93 Difference]: Finished difference Result 134 states and 165 transitions. [2024-11-09 22:44:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:44:19,831 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 22:44:19,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:19,832 INFO L225 Difference]: With dead ends: 134 [2024-11-09 22:44:19,832 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 22:44:19,832 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 22:44:19,833 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 22:44:19,833 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 22:44:19,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 22:44:19,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-09 22:44:19,856 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 22:44:19,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2024-11-09 22:44:19,857 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 90 [2024-11-09 22:44:19,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:19,857 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2024-11-09 22:44:19,858 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 22:44:19,858 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2024-11-09 22:44:19,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-09 22:44:19,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:19,859 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 22:44:19,875 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 22:44:20,059 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 22:44:20,060 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:20,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:20,061 INFO L85 PathProgramCache]: Analyzing trace with hash 415838423, now seen corresponding path program 1 times [2024-11-09 22:44:20,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:20,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948234485] [2024-11-09 22:44:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:20,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:44:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:44:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:44:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:44:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:44:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 22:44:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-09 22:44:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 22:44:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 22:44:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-09 22:44:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-09 22:44:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,410 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 22:44:20,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:20,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948234485] [2024-11-09 22:44:20,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948234485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:20,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924962296] [2024-11-09 22:44:20,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:20,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:20,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:20,413 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 22:44:20,414 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 22:44:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:20,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 22:44:20,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:20,812 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 22:44:20,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:21,209 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 22:44:21,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924962296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:21,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:44:21,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 18 [2024-11-09 22:44:21,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442646095] [2024-11-09 22:44:21,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:21,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 22:44:21,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:21,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 22:44:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-09 22:44:21,211 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 22:44:21,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:21,609 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2024-11-09 22:44:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 22:44:21,610 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 22:44:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:21,611 INFO L225 Difference]: With dead ends: 126 [2024-11-09 22:44:21,611 INFO L226 Difference]: Without dead ends: 106 [2024-11-09 22:44:21,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-11-09 22:44:21,612 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 32 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:21,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 434 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:44:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-09 22:44:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2024-11-09 22:44:21,632 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 22:44:21,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2024-11-09 22:44:21,633 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 92 [2024-11-09 22:44:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:21,634 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2024-11-09 22:44:21,634 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 22:44:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2024-11-09 22:44:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-09 22:44:21,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:21,635 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 22:44:21,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 22:44:21,839 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 22:44:21,840 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:21,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1243520162, now seen corresponding path program 1 times [2024-11-09 22:44:21,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:21,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182560482] [2024-11-09 22:44:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:21,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:44:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:44:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:44:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:44:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:44:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 22:44:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-09 22:44:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 22:44:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 22:44:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-09 22:44:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-09 22:44:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-09 22:44:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:21,949 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 22:44:21,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:21,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182560482] [2024-11-09 22:44:21,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182560482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:21,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464393455] [2024-11-09 22:44:21,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:21,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:21,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:21,951 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 22:44:21,953 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 22:44:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:22,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 22:44:22,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:22,044 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 22:44:22,044 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 22:44:22,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464393455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:44:22,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:44:22,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-09 22:44:22,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647558626] [2024-11-09 22:44:22,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:44:22,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 22:44:22,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:22,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 22:44:22,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 22:44:22,046 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 22:44:22,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:22,101 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2024-11-09 22:44:22,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 22:44:22,101 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 22:44:22,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:22,102 INFO L225 Difference]: With dead ends: 106 [2024-11-09 22:44:22,102 INFO L226 Difference]: Without dead ends: 93 [2024-11-09 22:44:22,103 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 22:44:22,103 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 22:44:22,103 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 22:44:22,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-09 22:44:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-09 22:44:22,123 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 22:44:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2024-11-09 22:44:22,124 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 96 [2024-11-09 22:44:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:22,125 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2024-11-09 22:44:22,125 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 22:44:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2024-11-09 22:44:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 22:44:22,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:22,126 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 22:44:22,144 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 22:44:22,331 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 22:44:22,332 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:22,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:22,332 INFO L85 PathProgramCache]: Analyzing trace with hash -80949632, now seen corresponding path program 3 times [2024-11-09 22:44:22,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:22,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306020566] [2024-11-09 22:44:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:22,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:22,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293840588] [2024-11-09 22:44:22,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:44:22,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:22,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:22,368 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 22:44:22,369 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 22:44:22,433 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 22:44:22,433 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:44:22,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 22:44:22,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:22,943 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 22:44:22,944 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:39,450 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 22:44:39,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:39,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306020566] [2024-11-09 22:44:39,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:44:39,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293840588] [2024-11-09 22:44:39,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293840588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:39,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 22:44:39,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2024-11-09 22:44:39,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091264458] [2024-11-09 22:44:39,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:39,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 22:44:39,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:39,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 22:44:39,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-09 22:44:39,452 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 22:44:46,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:46,624 INFO L93 Difference]: Finished difference Result 179 states and 226 transitions. [2024-11-09 22:44:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 22:44:46,625 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 22:44:46,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:46,627 INFO L225 Difference]: With dead ends: 179 [2024-11-09 22:44:46,628 INFO L226 Difference]: Without dead ends: 154 [2024-11-09 22:44:46,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2024-11-09 22:44:46,630 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 61 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:46,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 565 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 22:44:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-09 22:44:46,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2024-11-09 22:44:46,667 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 22:44:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 170 transitions. [2024-11-09 22:44:46,669 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 170 transitions. Word has length 108 [2024-11-09 22:44:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:46,669 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 170 transitions. [2024-11-09 22:44:46,669 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 22:44:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 170 transitions. [2024-11-09 22:44:46,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 22:44:46,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:46,672 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 22:44:46,689 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 22:44:46,872 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 22:44:46,872 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:46,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:46,873 INFO L85 PathProgramCache]: Analyzing trace with hash -317950124, now seen corresponding path program 2 times [2024-11-09 22:44:46,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:46,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012506398] [2024-11-09 22:44:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:46,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:46,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962904679] [2024-11-09 22:44:46,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:44:46,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:46,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:46,922 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 22:44:46,923 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 22:44:46,995 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:44:46,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:44:46,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 22:44:46,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:47,734 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 22:44:47,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:48,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:48,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012506398] [2024-11-09 22:44:48,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:44:48,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962904679] [2024-11-09 22:44:48,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962904679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:48,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:44:48,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-09 22:44:48,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455283706] [2024-11-09 22:44:48,370 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:48,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 22:44:48,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:48,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 22:44:48,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-11-09 22:44:48,371 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 22:44:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:48,855 INFO L93 Difference]: Finished difference Result 185 states and 220 transitions. [2024-11-09 22:44:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 22:44:48,856 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 22:44:48,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:48,857 INFO L225 Difference]: With dead ends: 185 [2024-11-09 22:44:48,857 INFO L226 Difference]: Without dead ends: 163 [2024-11-09 22:44:48,858 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 22:44:48,858 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:48,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 612 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 22:44:48,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-09 22:44:48,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2024-11-09 22:44:48,900 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 22:44:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 191 transitions. [2024-11-09 22:44:48,901 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 191 transitions. Word has length 119 [2024-11-09 22:44:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:48,901 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 191 transitions. [2024-11-09 22:44:48,902 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 22:44:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 191 transitions. [2024-11-09 22:44:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 22:44:48,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:48,903 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 22:44:48,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 22:44:49,103 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 22:44:49,103 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:49,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1162421995, now seen corresponding path program 1 times [2024-11-09 22:44:49,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:49,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921897518] [2024-11-09 22:44:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:49,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:49,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938127003] [2024-11-09 22:44:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:49,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:49,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:49,138 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 22:44:49,139 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 22:44:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:49,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 22:44:49,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:50,190 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 22:44:50,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:52,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:52,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921897518] [2024-11-09 22:44:52,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 22:44:52,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938127003] [2024-11-09 22:44:52,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938127003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:52,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 22:44:52,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-09 22:44:52,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698227522] [2024-11-09 22:44:52,122 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:52,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 22:44:52,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:52,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 22:44:52,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-09 22:44:52,123 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 22:44:52,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:52,487 INFO L93 Difference]: Finished difference Result 179 states and 206 transitions. [2024-11-09 22:44:52,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 22:44:52,488 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 22:44:52,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:52,489 INFO L225 Difference]: With dead ends: 179 [2024-11-09 22:44:52,489 INFO L226 Difference]: Without dead ends: 176 [2024-11-09 22:44:52,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2024-11-09 22:44:52,490 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 22:44:52,490 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 22:44:52,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-09 22:44:52,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 164. [2024-11-09 22:44:52,526 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 22:44:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 191 transitions. [2024-11-09 22:44:52,527 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 191 transitions. Word has length 119 [2024-11-09 22:44:52,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:52,528 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 191 transitions. [2024-11-09 22:44:52,528 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 22:44:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 191 transitions. [2024-11-09 22:44:52,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-09 22:44:52,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:52,529 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 22:44:52,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 22:44:52,733 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 22:44:52,734 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:52,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:52,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1207836850, now seen corresponding path program 2 times [2024-11-09 22:44:52,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:52,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793093062] [2024-11-09 22:44:52,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:52,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:44:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:44:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:44:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:44:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:44:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 22:44:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-09 22:44:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 22:44:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 22:44:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-09 22:44:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-09 22:44:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-09 22:44:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-09 22:44:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-09 22:44:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-11-09 22:44:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-09 22:44:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:53,237 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 22:44:53,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:53,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793093062] [2024-11-09 22:44:53,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793093062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:53,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26172650] [2024-11-09 22:44:53,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:44:53,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:53,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:53,240 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 22:44:53,246 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 22:44:53,308 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:44:53,308 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:44:53,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 22:44:53,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:53,654 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 22:44:53,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:54,443 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 22:44:54,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26172650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:54,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:44:54,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 12] total 24 [2024-11-09 22:44:54,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821612766] [2024-11-09 22:44:54,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:54,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 22:44:54,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:54,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 22:44:54,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-11-09 22:44:54,447 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 22:44:54,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:54,893 INFO L93 Difference]: Finished difference Result 176 states and 204 transitions. [2024-11-09 22:44:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 22:44:54,893 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 22:44:54,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:54,894 INFO L225 Difference]: With dead ends: 176 [2024-11-09 22:44:54,894 INFO L226 Difference]: Without dead ends: 127 [2024-11-09 22:44:54,895 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 22:44:54,895 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:54,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 617 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:44:54,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-09 22:44:54,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-09 22:44:54,925 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 22:44:54,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2024-11-09 22:44:54,926 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 124 [2024-11-09 22:44:54,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:54,926 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2024-11-09 22:44:54,926 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 22:44:54,926 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2024-11-09 22:44:54,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-09 22:44:54,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:54,928 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 22:44:54,944 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 22:44:55,131 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 22:44:55,132 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:55,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:55,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1158616771, now seen corresponding path program 3 times [2024-11-09 22:44:55,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:55,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869885795] [2024-11-09 22:44:55,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:55,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-09 22:44:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-09 22:44:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-09 22:44:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-09 22:44:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-09 22:44:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-09 22:44:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-09 22:44:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-09 22:44:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-09 22:44:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-09 22:44:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 22:44:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 22:44:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-09 22:44:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-09 22:44:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-09 22:44:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-09 22:44:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-09 22:44:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-09 22:44:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-11-09 22:44:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-09 22:44:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-11-09 22:44:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:44:55,357 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 22:44:55,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:44:55,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869885795] [2024-11-09 22:44:55,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869885795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:44:55,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309807836] [2024-11-09 22:44:55,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:44:55,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:55,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:55,360 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 22:44:55,361 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 22:44:55,420 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 22:44:55,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:44:55,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 22:44:55,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:55,750 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 22:44:55,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:44:55,980 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 22:44:55,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309807836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:44:55,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:44:55,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 8] total 23 [2024-11-09 22:44:55,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585384794] [2024-11-09 22:44:55,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:44:55,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 22:44:55,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:44:55,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 22:44:55,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2024-11-09 22:44:55,982 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 22:44:57,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:44:57,044 INFO L93 Difference]: Finished difference Result 154 states and 174 transitions. [2024-11-09 22:44:57,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 22:44:57,045 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 22:44:57,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:44:57,046 INFO L225 Difference]: With dead ends: 154 [2024-11-09 22:44:57,046 INFO L226 Difference]: Without dead ends: 145 [2024-11-09 22:44:57,046 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 22:44:57,047 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 45 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:44:57,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 473 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 22:44:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-09 22:44:57,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-09 22:44:57,075 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 22:44:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2024-11-09 22:44:57,076 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 137 [2024-11-09 22:44:57,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:44:57,077 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2024-11-09 22:44:57,077 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 22:44:57,077 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2024-11-09 22:44:57,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-09 22:44:57,078 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:44:57,078 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 22:44:57,090 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 22:44:57,278 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 22:44:57,278 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:44:57,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:44:57,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1625617691, now seen corresponding path program 4 times [2024-11-09 22:44:57,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:44:57,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073918684] [2024-11-09 22:44:57,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:44:57,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:44:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 22:44:57,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1775500260] [2024-11-09 22:44:57,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:44:57,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:44:57,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:44:57,318 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 22:44:57,322 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 22:44:57,413 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:44:57,414 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:44:57,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-09 22:44:57,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:44:58,199 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 22:44:58,199 INFO L311 TraceCheckSpWp]: Computing backward predicates...