./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/kundu2.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/systemc/kundu2.cil.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 87760fc84dfa44e1b5109b35af0fae7e5f68f814afbb1ba90e7b46e4e9e3b4bf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 08:06:04,302 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 08:06:04,378 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 08:06:04,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 08:06:04,383 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 08:06:04,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 08:06:04,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 08:06:04,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 08:06:04,410 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 08:06:04,411 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 08:06:04,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 08:06:04,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 08:06:04,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 08:06:04,412 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 08:06:04,413 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 08:06:04,413 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 08:06:04,417 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 08:06:04,417 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 08:06:04,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 08:06:04,421 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 08:06:04,422 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 08:06:04,422 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 08:06:04,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 08:06:04,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 08:06:04,423 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 08:06:04,423 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 08:06:04,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 08:06:04,423 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 08:06:04,424 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 08:06:04,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 08:06:04,424 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 08:06:04,424 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 08:06:04,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:06:04,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 08:06:04,427 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 08:06:04,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 08:06:04,427 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 08:06:04,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 08:06:04,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 08:06:04,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 08:06:04,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 08:06:04,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 08:06:04,429 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87760fc84dfa44e1b5109b35af0fae7e5f68f814afbb1ba90e7b46e4e9e3b4bf [2024-11-16 08:06:04,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 08:06:04,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 08:06:04,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 08:06:04,688 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 08:06:04,688 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 08:06:04,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/kundu2.cil.c [2024-11-16 08:06:06,133 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 08:06:06,349 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 08:06:06,350 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/kundu2.cil.c [2024-11-16 08:06:06,364 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe594d645/cc1295f36a9943c8950411d881201aee/FLAG70c6f04c9 [2024-11-16 08:06:06,715 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe594d645/cc1295f36a9943c8950411d881201aee [2024-11-16 08:06:06,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 08:06:06,720 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 08:06:06,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 08:06:06,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 08:06:06,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 08:06:06,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:06:06" (1/1) ... [2024-11-16 08:06:06,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a854fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:06, skipping insertion in model container [2024-11-16 08:06:06,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:06:06" (1/1) ... [2024-11-16 08:06:06,760 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 08:06:06,946 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/systemc/kundu2.cil.c[636,649] [2024-11-16 08:06:07,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:06:07,021 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 08:06:07,032 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/systemc/kundu2.cil.c[636,649] [2024-11-16 08:06:07,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 08:06:07,081 INFO L204 MainTranslator]: Completed translation [2024-11-16 08:06:07,082 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07 WrapperNode [2024-11-16 08:06:07,082 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 08:06:07,083 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 08:06:07,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 08:06:07,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 08:06:07,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07" (1/1) ... [2024-11-16 08:06:07,096 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07" (1/1) ... [2024-11-16 08:06:07,120 INFO L138 Inliner]: procedures = 34, calls = 40, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 307 [2024-11-16 08:06:07,121 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 08:06:07,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 08:06:07,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 08:06:07,121 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 08:06:07,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07" (1/1) ... [2024-11-16 08:06:07,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07" (1/1) ... [2024-11-16 08:06:07,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07" (1/1) ... [2024-11-16 08:06:07,153 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]. [2024-11-16 08:06:07,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07" (1/1) ... [2024-11-16 08:06:07,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07" (1/1) ... [2024-11-16 08:06:07,159 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07" (1/1) ... [2024-11-16 08:06:07,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07" (1/1) ... [2024-11-16 08:06:07,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07" (1/1) ... [2024-11-16 08:06:07,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07" (1/1) ... [2024-11-16 08:06:07,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 08:06:07,165 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 08:06:07,166 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 08:06:07,166 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 08:06:07,167 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07" (1/1) ... [2024-11-16 08:06:07,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 08:06:07,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:06:07,212 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) [2024-11-16 08:06:07,214 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 [2024-11-16 08:06:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 08:06:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure write_data [2024-11-16 08:06:07,258 INFO L138 BoogieDeclarations]: Found implementation of procedure write_data [2024-11-16 08:06:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-16 08:06:07,258 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-16 08:06:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-16 08:06:07,258 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-16 08:06:07,258 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-16 08:06:07,260 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-16 08:06:07,260 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-16 08:06:07,260 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-16 08:06:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-16 08:06:07,261 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-16 08:06:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 08:06:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-16 08:06:07,261 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-16 08:06:07,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 08:06:07,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 08:06:07,372 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 08:06:07,374 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 08:06:07,747 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-16 08:06:07,748 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 08:06:07,767 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 08:06:07,768 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 08:06:07,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:06:07 BoogieIcfgContainer [2024-11-16 08:06:07,769 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 08:06:07,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 08:06:07,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 08:06:07,774 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 08:06:07,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:06:06" (1/3) ... [2024-11-16 08:06:07,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f38bdc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:06:07, skipping insertion in model container [2024-11-16 08:06:07,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:07" (2/3) ... [2024-11-16 08:06:07,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f38bdc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:06:07, skipping insertion in model container [2024-11-16 08:06:07,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:06:07" (3/3) ... [2024-11-16 08:06:07,776 INFO L112 eAbstractionObserver]: Analyzing ICFG kundu2.cil.c [2024-11-16 08:06:07,789 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 08:06:07,789 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 08:06:07,842 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 08:06:07,849 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;@83f99cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 08:06:07,849 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 08:06:07,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 130 states have (on average 1.4230769230769231) internal successors, (185), 134 states have internal predecessors, (185), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-16 08:06:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 08:06:07,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:07,868 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:07,869 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:07,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:07,873 INFO L85 PathProgramCache]: Analyzing trace with hash -678781014, now seen corresponding path program 1 times [2024-11-16 08:06:07,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:07,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941506990] [2024-11-16 08:06:07,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:07,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:08,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:08,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:08,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:08,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:08,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 08:06:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:08,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 08:06:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:08,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941506990] [2024-11-16 08:06:08,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941506990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:08,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:08,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:06:08,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933568289] [2024-11-16 08:06:08,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:08,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:06:08,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:08,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:06:08,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:06:08,443 INFO L87 Difference]: Start difference. First operand has 157 states, 130 states have (on average 1.4230769230769231) internal successors, (185), 134 states have internal predecessors, (185), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:08,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:08,922 INFO L93 Difference]: Finished difference Result 473 states and 681 transitions. [2024-11-16 08:06:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:06:08,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-11-16 08:06:08,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:08,938 INFO L225 Difference]: With dead ends: 473 [2024-11-16 08:06:08,938 INFO L226 Difference]: Without dead ends: 317 [2024-11-16 08:06:08,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:06:08,945 INFO L432 NwaCegarLoop]: 395 mSDtfsCounter, 439 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:08,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 955 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 08:06:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-16 08:06:09,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 274. [2024-11-16 08:06:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 232 states have (on average 1.3620689655172413) internal successors, (316), 236 states have internal predecessors, (316), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-16 08:06:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 371 transitions. [2024-11-16 08:06:09,017 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 371 transitions. Word has length 64 [2024-11-16 08:06:09,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:09,017 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 371 transitions. [2024-11-16 08:06:09,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:09,018 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 371 transitions. [2024-11-16 08:06:09,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 08:06:09,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:09,021 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:09,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 08:06:09,021 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:09,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:09,022 INFO L85 PathProgramCache]: Analyzing trace with hash 643888391, now seen corresponding path program 1 times [2024-11-16 08:06:09,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:09,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255224946] [2024-11-16 08:06:09,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:09,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:09,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:09,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:09,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:09,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 08:06:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:09,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 08:06:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:09,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:09,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255224946] [2024-11-16 08:06:09,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255224946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:09,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:09,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:06:09,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26886031] [2024-11-16 08:06:09,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:09,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:06:09,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:09,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:06:09,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:06:09,215 INFO L87 Difference]: Start difference. First operand 274 states and 371 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:09,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:09,500 INFO L93 Difference]: Finished difference Result 569 states and 783 transitions. [2024-11-16 08:06:09,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:06:09,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-11-16 08:06:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:09,506 INFO L225 Difference]: With dead ends: 569 [2024-11-16 08:06:09,506 INFO L226 Difference]: Without dead ends: 306 [2024-11-16 08:06:09,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:06:09,509 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 56 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:09,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 867 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:06:09,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-16 08:06:09,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 277. [2024-11-16 08:06:09,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 235 states have (on average 1.353191489361702) internal successors, (318), 239 states have internal predecessors, (318), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-16 08:06:09,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 373 transitions. [2024-11-16 08:06:09,561 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 373 transitions. Word has length 64 [2024-11-16 08:06:09,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:09,562 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 373 transitions. [2024-11-16 08:06:09,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:09,562 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 373 transitions. [2024-11-16 08:06:09,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 08:06:09,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:09,567 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:09,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 08:06:09,568 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:09,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:09,569 INFO L85 PathProgramCache]: Analyzing trace with hash -380805530, now seen corresponding path program 1 times [2024-11-16 08:06:09,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:09,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107562003] [2024-11-16 08:06:09,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:09,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:09,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:09,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:09,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:09,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 08:06:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:09,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 08:06:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:09,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:09,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107562003] [2024-11-16 08:06:09,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107562003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:09,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:09,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:06:09,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4119144] [2024-11-16 08:06:09,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:09,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:06:09,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:09,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:06:09,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:06:09,800 INFO L87 Difference]: Start difference. First operand 277 states and 373 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:10,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:10,416 INFO L93 Difference]: Finished difference Result 1001 states and 1382 transitions. [2024-11-16 08:06:10,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:06:10,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-11-16 08:06:10,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:10,423 INFO L225 Difference]: With dead ends: 1001 [2024-11-16 08:06:10,423 INFO L226 Difference]: Without dead ends: 735 [2024-11-16 08:06:10,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-16 08:06:10,426 INFO L432 NwaCegarLoop]: 384 mSDtfsCounter, 728 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:10,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1278 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 08:06:10,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-11-16 08:06:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 525. [2024-11-16 08:06:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 449 states have (on average 1.3474387527839644) internal successors, (605), 456 states have internal predecessors, (605), 51 states have call successors, (51), 25 states have call predecessors, (51), 24 states have return successors, (51), 44 states have call predecessors, (51), 48 states have call successors, (51) [2024-11-16 08:06:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 707 transitions. [2024-11-16 08:06:10,497 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 707 transitions. Word has length 64 [2024-11-16 08:06:10,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:10,498 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 707 transitions. [2024-11-16 08:06:10,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:10,498 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 707 transitions. [2024-11-16 08:06:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 08:06:10,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:10,501 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:10,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 08:06:10,501 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:10,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:10,501 INFO L85 PathProgramCache]: Analyzing trace with hash -680379005, now seen corresponding path program 1 times [2024-11-16 08:06:10,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:10,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27805359] [2024-11-16 08:06:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:10,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:10,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:10,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:10,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 08:06:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:10,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 08:06:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:10,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:10,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27805359] [2024-11-16 08:06:10,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27805359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:10,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:10,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:06:10,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476906580] [2024-11-16 08:06:10,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:10,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:06:10,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:10,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:06:10,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:06:10,660 INFO L87 Difference]: Start difference. First operand 525 states and 707 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:10,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:10,885 INFO L93 Difference]: Finished difference Result 1093 states and 1501 transitions. [2024-11-16 08:06:10,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:06:10,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-11-16 08:06:10,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:10,894 INFO L225 Difference]: With dead ends: 1093 [2024-11-16 08:06:10,894 INFO L226 Difference]: Without dead ends: 579 [2024-11-16 08:06:10,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:06:10,900 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 56 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:10,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 825 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:06:10,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-16 08:06:10,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 534. [2024-11-16 08:06:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 458 states have (on average 1.3384279475982532) internal successors, (613), 465 states have internal predecessors, (613), 51 states have call successors, (51), 25 states have call predecessors, (51), 24 states have return successors, (51), 44 states have call predecessors, (51), 48 states have call successors, (51) [2024-11-16 08:06:10,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 715 transitions. [2024-11-16 08:06:10,942 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 715 transitions. Word has length 64 [2024-11-16 08:06:10,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:10,943 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 715 transitions. [2024-11-16 08:06:10,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:10,943 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 715 transitions. [2024-11-16 08:06:10,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 08:06:10,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:10,944 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:10,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 08:06:10,945 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:10,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:10,945 INFO L85 PathProgramCache]: Analyzing trace with hash 952424994, now seen corresponding path program 1 times [2024-11-16 08:06:10,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:10,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099210107] [2024-11-16 08:06:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:10,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:10,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:10,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:10,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:11,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 08:06:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:11,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 08:06:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:11,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:11,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099210107] [2024-11-16 08:06:11,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099210107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:11,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:11,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:06:11,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331586117] [2024-11-16 08:06:11,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:11,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:06:11,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:11,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:06:11,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:06:11,086 INFO L87 Difference]: Start difference. First operand 534 states and 715 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:11,704 INFO L93 Difference]: Finished difference Result 1779 states and 2417 transitions. [2024-11-16 08:06:11,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:06:11,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-11-16 08:06:11,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:11,714 INFO L225 Difference]: With dead ends: 1779 [2024-11-16 08:06:11,715 INFO L226 Difference]: Without dead ends: 1256 [2024-11-16 08:06:11,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-16 08:06:11,718 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 814 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:11,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1167 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 08:06:11,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2024-11-16 08:06:11,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 763. [2024-11-16 08:06:11,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 653 states have (on average 1.326186830015314) internal successors, (866), 663 states have internal predecessors, (866), 73 states have call successors, (73), 37 states have call predecessors, (73), 36 states have return successors, (73), 63 states have call predecessors, (73), 70 states have call successors, (73) [2024-11-16 08:06:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1012 transitions. [2024-11-16 08:06:11,784 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1012 transitions. Word has length 64 [2024-11-16 08:06:11,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:11,786 INFO L471 AbstractCegarLoop]: Abstraction has 763 states and 1012 transitions. [2024-11-16 08:06:11,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:11,786 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1012 transitions. [2024-11-16 08:06:11,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 08:06:11,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:11,787 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:11,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 08:06:11,788 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:11,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:11,789 INFO L85 PathProgramCache]: Analyzing trace with hash 501892521, now seen corresponding path program 1 times [2024-11-16 08:06:11,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:11,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656851907] [2024-11-16 08:06:11,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:11,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:11,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:11,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:11,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:11,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:11,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:11,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:11,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656851907] [2024-11-16 08:06:11,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656851907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:11,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:11,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:06:11,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11306652] [2024-11-16 08:06:11,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:11,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:06:11,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:11,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:06:11,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:06:11,866 INFO L87 Difference]: Start difference. First operand 763 states and 1012 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:12,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:12,296 INFO L93 Difference]: Finished difference Result 2645 states and 3606 transitions. [2024-11-16 08:06:12,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 08:06:12,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2024-11-16 08:06:12,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:12,306 INFO L225 Difference]: With dead ends: 2645 [2024-11-16 08:06:12,307 INFO L226 Difference]: Without dead ends: 1893 [2024-11-16 08:06:12,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:06:12,310 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 453 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:12,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 1049 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 08:06:12,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2024-11-16 08:06:12,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1561. [2024-11-16 08:06:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1332 states have (on average 1.3018018018018018) internal successors, (1734), 1349 states have internal predecessors, (1734), 150 states have call successors, (150), 79 states have call predecessors, (150), 78 states have return successors, (171), 133 states have call predecessors, (171), 147 states have call successors, (171) [2024-11-16 08:06:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 2055 transitions. [2024-11-16 08:06:12,463 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 2055 transitions. Word has length 67 [2024-11-16 08:06:12,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:12,463 INFO L471 AbstractCegarLoop]: Abstraction has 1561 states and 2055 transitions. [2024-11-16 08:06:12,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:12,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 2055 transitions. [2024-11-16 08:06:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 08:06:12,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:12,466 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:12,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 08:06:12,466 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:12,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1475164998, now seen corresponding path program 1 times [2024-11-16 08:06:12,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:12,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380751843] [2024-11-16 08:06:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:12,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:12,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:12,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:12,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:12,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:12,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:12,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380751843] [2024-11-16 08:06:12,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380751843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:12,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:12,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:06:12,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692582766] [2024-11-16 08:06:12,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:12,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:06:12,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:12,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:06:12,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:06:12,583 INFO L87 Difference]: Start difference. First operand 1561 states and 2055 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:12,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:12,833 INFO L93 Difference]: Finished difference Result 3274 states and 4413 transitions. [2024-11-16 08:06:12,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 08:06:12,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2024-11-16 08:06:12,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:12,862 INFO L225 Difference]: With dead ends: 3274 [2024-11-16 08:06:12,863 INFO L226 Difference]: Without dead ends: 1724 [2024-11-16 08:06:12,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:06:12,867 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 56 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:12,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 809 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:06:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2024-11-16 08:06:12,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1585. [2024-11-16 08:06:12,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1356 states have (on average 1.2927728613569323) internal successors, (1753), 1373 states have internal predecessors, (1753), 150 states have call successors, (150), 79 states have call predecessors, (150), 78 states have return successors, (171), 133 states have call predecessors, (171), 147 states have call successors, (171) [2024-11-16 08:06:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2074 transitions. [2024-11-16 08:06:12,956 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2074 transitions. Word has length 67 [2024-11-16 08:06:12,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:12,957 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2074 transitions. [2024-11-16 08:06:12,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 08:06:12,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2074 transitions. [2024-11-16 08:06:12,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 08:06:12,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:12,958 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:12,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 08:06:12,958 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:12,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:12,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1794310299, now seen corresponding path program 1 times [2024-11-16 08:06:12,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:12,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713091757] [2024-11-16 08:06:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:12,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:13,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:13,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713091757] [2024-11-16 08:06:13,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713091757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:13,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:13,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:06:13,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559245501] [2024-11-16 08:06:13,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:13,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:06:13,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:13,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:06:13,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:06:13,068 INFO L87 Difference]: Start difference. First operand 1585 states and 2074 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 08:06:13,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:13,437 INFO L93 Difference]: Finished difference Result 4587 states and 6028 transitions. [2024-11-16 08:06:13,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 08:06:13,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 67 [2024-11-16 08:06:13,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:13,454 INFO L225 Difference]: With dead ends: 4587 [2024-11-16 08:06:13,454 INFO L226 Difference]: Without dead ends: 3094 [2024-11-16 08:06:13,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-16 08:06:13,462 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 258 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:13,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 936 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:06:13,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2024-11-16 08:06:13,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 2764. [2024-11-16 08:06:13,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2377 states have (on average 1.281447202355911) internal successors, (3046), 2412 states have internal predecessors, (3046), 247 states have call successors, (247), 140 states have call predecessors, (247), 139 states have return successors, (282), 212 states have call predecessors, (282), 244 states have call successors, (282) [2024-11-16 08:06:13,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3575 transitions. [2024-11-16 08:06:13,641 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3575 transitions. Word has length 67 [2024-11-16 08:06:13,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:13,641 INFO L471 AbstractCegarLoop]: Abstraction has 2764 states and 3575 transitions. [2024-11-16 08:06:13,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-16 08:06:13,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3575 transitions. [2024-11-16 08:06:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 08:06:13,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:13,643 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:13,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 08:06:13,643 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:13,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1412641383, now seen corresponding path program 1 times [2024-11-16 08:06:13,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:13,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046253560] [2024-11-16 08:06:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:13,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-16 08:06:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:13,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:13,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046253560] [2024-11-16 08:06:13,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046253560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:06:13,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440893533] [2024-11-16 08:06:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:13,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:06:13,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:06:13,766 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) [2024-11-16 08:06:13,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 08:06:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:13,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 08:06:13,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:06:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:13,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:06:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:14,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440893533] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 08:06:14,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 08:06:14,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 8 [2024-11-16 08:06:14,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157099831] [2024-11-16 08:06:14,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:14,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:06:14,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:14,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:06:14,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:06:14,090 INFO L87 Difference]: Start difference. First operand 2764 states and 3575 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 08:06:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:14,521 INFO L93 Difference]: Finished difference Result 6449 states and 8404 transitions. [2024-11-16 08:06:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:06:14,522 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 82 [2024-11-16 08:06:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:14,542 INFO L225 Difference]: With dead ends: 6449 [2024-11-16 08:06:14,542 INFO L226 Difference]: Without dead ends: 4292 [2024-11-16 08:06:14,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-16 08:06:14,551 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 317 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:14,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 1421 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:06:14,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2024-11-16 08:06:14,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 4262. [2024-11-16 08:06:14,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4262 states, 3672 states have (on average 1.2807734204793029) internal successors, (4703), 3719 states have internal predecessors, (4703), 377 states have call successors, (377), 213 states have call predecessors, (377), 212 states have return successors, (435), 330 states have call predecessors, (435), 374 states have call successors, (435) [2024-11-16 08:06:14,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4262 states to 4262 states and 5515 transitions. [2024-11-16 08:06:14,818 INFO L78 Accepts]: Start accepts. Automaton has 4262 states and 5515 transitions. Word has length 82 [2024-11-16 08:06:14,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:14,819 INFO L471 AbstractCegarLoop]: Abstraction has 4262 states and 5515 transitions. [2024-11-16 08:06:14,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 08:06:14,819 INFO L276 IsEmpty]: Start isEmpty. Operand 4262 states and 5515 transitions. [2024-11-16 08:06:14,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 08:06:14,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:14,820 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:14,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 08:06:15,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:06:15,022 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:15,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:15,022 INFO L85 PathProgramCache]: Analyzing trace with hash -657420242, now seen corresponding path program 1 times [2024-11-16 08:06:15,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:15,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637843939] [2024-11-16 08:06:15,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:15,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:15,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:15,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:15,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:15,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:15,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:15,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-16 08:06:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:15,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:15,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637843939] [2024-11-16 08:06:15,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637843939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:15,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:15,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:06:15,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267301035] [2024-11-16 08:06:15,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:15,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:06:15,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:15,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:06:15,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:06:15,115 INFO L87 Difference]: Start difference. First operand 4262 states and 5515 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 08:06:16,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:16,026 INFO L93 Difference]: Finished difference Result 13044 states and 17184 transitions. [2024-11-16 08:06:16,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 08:06:16,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 85 [2024-11-16 08:06:16,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:16,070 INFO L225 Difference]: With dead ends: 13044 [2024-11-16 08:06:16,070 INFO L226 Difference]: Without dead ends: 8794 [2024-11-16 08:06:16,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-16 08:06:16,086 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 414 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:16,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 653 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 08:06:16,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8794 states. [2024-11-16 08:06:16,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8794 to 8085. [2024-11-16 08:06:16,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8085 states, 6987 states have (on average 1.2640618291112065) internal successors, (8832), 7069 states have internal predecessors, (8832), 670 states have call successors, (670), 398 states have call predecessors, (670), 427 states have return successors, (1015), 619 states have call predecessors, (1015), 667 states have call successors, (1015) [2024-11-16 08:06:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8085 states to 8085 states and 10517 transitions. [2024-11-16 08:06:16,689 INFO L78 Accepts]: Start accepts. Automaton has 8085 states and 10517 transitions. Word has length 85 [2024-11-16 08:06:16,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:16,690 INFO L471 AbstractCegarLoop]: Abstraction has 8085 states and 10517 transitions. [2024-11-16 08:06:16,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 08:06:16,690 INFO L276 IsEmpty]: Start isEmpty. Operand 8085 states and 10517 transitions. [2024-11-16 08:06:16,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-16 08:06:16,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:16,692 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:16,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 08:06:16,692 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:16,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:16,693 INFO L85 PathProgramCache]: Analyzing trace with hash -643887441, now seen corresponding path program 1 times [2024-11-16 08:06:16,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:16,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412872079] [2024-11-16 08:06:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:16,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:16,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:16,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:16,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:16,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:16,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:16,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-16 08:06:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:16,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:16,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412872079] [2024-11-16 08:06:16,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412872079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:16,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:16,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:06:16,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086258487] [2024-11-16 08:06:16,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:16,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:06:16,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:16,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:06:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:06:16,748 INFO L87 Difference]: Start difference. First operand 8085 states and 10517 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 08:06:17,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:17,468 INFO L93 Difference]: Finished difference Result 16869 states and 22052 transitions. [2024-11-16 08:06:17,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:06:17,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (7), 4 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 85 [2024-11-16 08:06:17,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:17,518 INFO L225 Difference]: With dead ends: 16869 [2024-11-16 08:06:17,518 INFO L226 Difference]: Without dead ends: 8796 [2024-11-16 08:06:17,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:06:17,542 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 326 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:17,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 345 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:06:17,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8796 states. [2024-11-16 08:06:18,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8796 to 8080. [2024-11-16 08:06:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8080 states, 6985 states have (on average 1.2638511095204008) internal successors, (8828), 7066 states have internal predecessors, (8828), 667 states have call successors, (667), 398 states have call predecessors, (667), 427 states have return successors, (1012), 616 states have call predecessors, (1012), 664 states have call successors, (1012) [2024-11-16 08:06:18,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8080 states to 8080 states and 10507 transitions. [2024-11-16 08:06:18,240 INFO L78 Accepts]: Start accepts. Automaton has 8080 states and 10507 transitions. Word has length 85 [2024-11-16 08:06:18,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:18,240 INFO L471 AbstractCegarLoop]: Abstraction has 8080 states and 10507 transitions. [2024-11-16 08:06:18,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 08:06:18,242 INFO L276 IsEmpty]: Start isEmpty. Operand 8080 states and 10507 transitions. [2024-11-16 08:06:18,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 08:06:18,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:18,243 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:18,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 08:06:18,244 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:18,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:18,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2119486466, now seen corresponding path program 1 times [2024-11-16 08:06:18,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:18,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096105558] [2024-11-16 08:06:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:18,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:18,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:18,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:18,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:18,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:18,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:18,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-16 08:06:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:18,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:18,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096105558] [2024-11-16 08:06:18,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096105558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:18,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 08:06:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895104964] [2024-11-16 08:06:18,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:18,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 08:06:18,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:18,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 08:06:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:06:18,416 INFO L87 Difference]: Start difference. First operand 8080 states and 10507 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 08:06:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:19,652 INFO L93 Difference]: Finished difference Result 15811 states and 20716 transitions. [2024-11-16 08:06:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 08:06:19,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 86 [2024-11-16 08:06:19,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:19,693 INFO L225 Difference]: With dead ends: 15811 [2024-11-16 08:06:19,693 INFO L226 Difference]: Without dead ends: 8823 [2024-11-16 08:06:19,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-16 08:06:19,716 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 605 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:19,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 998 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 08:06:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8823 states. [2024-11-16 08:06:20,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8823 to 8074. [2024-11-16 08:06:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8074 states, 6979 states have (on average 1.2623585040836796) internal successors, (8810), 7060 states have internal predecessors, (8810), 667 states have call successors, (667), 398 states have call predecessors, (667), 427 states have return successors, (1012), 616 states have call predecessors, (1012), 664 states have call successors, (1012) [2024-11-16 08:06:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8074 states to 8074 states and 10489 transitions. [2024-11-16 08:06:20,245 INFO L78 Accepts]: Start accepts. Automaton has 8074 states and 10489 transitions. Word has length 86 [2024-11-16 08:06:20,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:20,245 INFO L471 AbstractCegarLoop]: Abstraction has 8074 states and 10489 transitions. [2024-11-16 08:06:20,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 08:06:20,245 INFO L276 IsEmpty]: Start isEmpty. Operand 8074 states and 10489 transitions. [2024-11-16 08:06:20,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-16 08:06:20,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:20,250 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:20,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 08:06:20,250 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:20,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:20,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1780874345, now seen corresponding path program 1 times [2024-11-16 08:06:20,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:20,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064818578] [2024-11-16 08:06:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:20,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:20,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:20,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:20,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:20,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:20,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:20,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 08:06:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 08:06:20,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:20,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064818578] [2024-11-16 08:06:20,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064818578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:06:20,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858543074] [2024-11-16 08:06:20,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:20,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:06:20,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:06:20,347 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) [2024-11-16 08:06:20,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 08:06:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:20,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 08:06:20,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:06:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:20,457 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 08:06:20,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858543074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:20,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 08:06:20,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-16 08:06:20,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674558216] [2024-11-16 08:06:20,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:20,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 08:06:20,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:20,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 08:06:20,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:06:20,459 INFO L87 Difference]: Start difference. First operand 8074 states and 10489 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 08:06:21,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:21,169 INFO L93 Difference]: Finished difference Result 22591 states and 29772 transitions. [2024-11-16 08:06:21,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 08:06:21,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 90 [2024-11-16 08:06:21,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:21,222 INFO L225 Difference]: With dead ends: 22591 [2024-11-16 08:06:21,223 INFO L226 Difference]: Without dead ends: 14529 [2024-11-16 08:06:21,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:06:21,249 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 141 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:21,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 534 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 08:06:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14529 states. [2024-11-16 08:06:22,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14529 to 14525. [2024-11-16 08:06:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14525 states, 12459 states have (on average 1.2522674371939964) internal successors, (15602), 12612 states have internal predecessors, (15602), 1257 states have call successors, (1257), 752 states have call predecessors, (1257), 808 states have return successors, (2229), 1162 states have call predecessors, (2229), 1254 states have call successors, (2229) [2024-11-16 08:06:22,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14525 states to 14525 states and 19088 transitions. [2024-11-16 08:06:22,501 INFO L78 Accepts]: Start accepts. Automaton has 14525 states and 19088 transitions. Word has length 90 [2024-11-16 08:06:22,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:22,605 INFO L471 AbstractCegarLoop]: Abstraction has 14525 states and 19088 transitions. [2024-11-16 08:06:22,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 08:06:22,605 INFO L276 IsEmpty]: Start isEmpty. Operand 14525 states and 19088 transitions. [2024-11-16 08:06:22,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-16 08:06:22,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:22,609 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:22,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 08:06:22,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 08:06:22,810 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:22,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1327356863, now seen corresponding path program 1 times [2024-11-16 08:06:22,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:22,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695282898] [2024-11-16 08:06:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:22,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:22,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:22,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:22,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:22,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:22,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:22,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-16 08:06:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:22,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-16 08:06:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 08:06:22,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:22,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695282898] [2024-11-16 08:06:22,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695282898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:22,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:22,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 08:06:22,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047885536] [2024-11-16 08:06:22,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:22,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 08:06:22,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:22,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 08:06:22,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:06:22,912 INFO L87 Difference]: Start difference. First operand 14525 states and 19088 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:06:24,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:24,920 INFO L93 Difference]: Finished difference Result 31892 states and 42244 transitions. [2024-11-16 08:06:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 08:06:24,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 99 [2024-11-16 08:06:24,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:24,987 INFO L225 Difference]: With dead ends: 31892 [2024-11-16 08:06:24,988 INFO L226 Difference]: Without dead ends: 20490 [2024-11-16 08:06:25,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-16 08:06:25,012 INFO L432 NwaCegarLoop]: 357 mSDtfsCounter, 811 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:25,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1398 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 08:06:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20490 states. [2024-11-16 08:06:26,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20490 to 19339. [2024-11-16 08:06:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19339 states, 16663 states have (on average 1.2545760067214786) internal successors, (20905), 16910 states have internal predecessors, (20905), 1585 states have call successors, (1585), 948 states have call predecessors, (1585), 1090 states have return successors, (3051), 1482 states have call predecessors, (3051), 1582 states have call successors, (3051) [2024-11-16 08:06:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19339 states to 19339 states and 25541 transitions. [2024-11-16 08:06:26,286 INFO L78 Accepts]: Start accepts. Automaton has 19339 states and 25541 transitions. Word has length 99 [2024-11-16 08:06:26,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:26,287 INFO L471 AbstractCegarLoop]: Abstraction has 19339 states and 25541 transitions. [2024-11-16 08:06:26,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:06:26,287 INFO L276 IsEmpty]: Start isEmpty. Operand 19339 states and 25541 transitions. [2024-11-16 08:06:26,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-16 08:06:26,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:26,294 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:26,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 08:06:26,294 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:26,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:26,295 INFO L85 PathProgramCache]: Analyzing trace with hash 642874961, now seen corresponding path program 1 times [2024-11-16 08:06:26,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:26,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199610931] [2024-11-16 08:06:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:26,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:26,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:26,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:26,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:26,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:26,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:26,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-16 08:06:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:26,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-16 08:06:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 08:06:26,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:26,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199610931] [2024-11-16 08:06:26,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199610931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:26,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:26,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 08:06:26,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804190046] [2024-11-16 08:06:26,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:26,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:06:26,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:26,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:06:26,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:06:26,466 INFO L87 Difference]: Start difference. First operand 19339 states and 25541 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:06:29,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:29,114 INFO L93 Difference]: Finished difference Result 47120 states and 62554 transitions. [2024-11-16 08:06:29,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 08:06:29,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2024-11-16 08:06:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:29,244 INFO L225 Difference]: With dead ends: 47120 [2024-11-16 08:06:29,245 INFO L226 Difference]: Without dead ends: 30920 [2024-11-16 08:06:29,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-11-16 08:06:29,296 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 937 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:29,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 1752 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 08:06:29,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30920 states. [2024-11-16 08:06:30,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30920 to 28426. [2024-11-16 08:06:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28426 states, 24568 states have (on average 1.2576522305437967) internal successors, (30898), 24887 states have internal predecessors, (30898), 2278 states have call successors, (2278), 1362 states have call predecessors, (2278), 1579 states have return successors, (4466), 2178 states have call predecessors, (4466), 2275 states have call successors, (4466) [2024-11-16 08:06:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28426 states to 28426 states and 37642 transitions. [2024-11-16 08:06:31,108 INFO L78 Accepts]: Start accepts. Automaton has 28426 states and 37642 transitions. Word has length 102 [2024-11-16 08:06:31,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:31,109 INFO L471 AbstractCegarLoop]: Abstraction has 28426 states and 37642 transitions. [2024-11-16 08:06:31,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:06:31,109 INFO L276 IsEmpty]: Start isEmpty. Operand 28426 states and 37642 transitions. [2024-11-16 08:06:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-16 08:06:31,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:31,116 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:31,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 08:06:31,116 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:31,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:31,116 INFO L85 PathProgramCache]: Analyzing trace with hash 593023257, now seen corresponding path program 1 times [2024-11-16 08:06:31,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:31,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236543407] [2024-11-16 08:06:31,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:31,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:31,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:31,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:31,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:31,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:31,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:31,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-16 08:06:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:31,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-16 08:06:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:31,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-16 08:06:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 08:06:31,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:31,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236543407] [2024-11-16 08:06:31,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236543407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:31,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:31,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 08:06:31,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801975497] [2024-11-16 08:06:31,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:31,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 08:06:31,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:31,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 08:06:31,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 08:06:31,216 INFO L87 Difference]: Start difference. First operand 28426 states and 37642 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-16 08:06:33,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:33,448 INFO L93 Difference]: Finished difference Result 58760 states and 77891 transitions. [2024-11-16 08:06:33,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 08:06:33,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 113 [2024-11-16 08:06:33,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:33,578 INFO L225 Difference]: With dead ends: 58760 [2024-11-16 08:06:33,578 INFO L226 Difference]: Without dead ends: 30350 [2024-11-16 08:06:33,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-16 08:06:33,657 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 419 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:33,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 481 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 08:06:33,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30350 states. [2024-11-16 08:06:35,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30350 to 27498. [2024-11-16 08:06:35,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27498 states, 23592 states have (on average 1.2476687012546626) internal successors, (29435), 23959 states have internal predecessors, (29435), 2278 states have call successors, (2278), 1362 states have call predecessors, (2278), 1627 states have return successors, (4074), 2178 states have call predecessors, (4074), 2275 states have call successors, (4074) [2024-11-16 08:06:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27498 states to 27498 states and 35787 transitions. [2024-11-16 08:06:35,795 INFO L78 Accepts]: Start accepts. Automaton has 27498 states and 35787 transitions. Word has length 113 [2024-11-16 08:06:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:35,795 INFO L471 AbstractCegarLoop]: Abstraction has 27498 states and 35787 transitions. [2024-11-16 08:06:35,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-16 08:06:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 27498 states and 35787 transitions. [2024-11-16 08:06:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-16 08:06:35,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:35,803 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:35,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 08:06:35,803 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:35,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:35,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1420819550, now seen corresponding path program 1 times [2024-11-16 08:06:35,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:35,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551962836] [2024-11-16 08:06:35,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:35,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:35,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:35,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:35,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:35,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:35,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:35,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-16 08:06:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:35,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-16 08:06:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 08:06:35,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:35,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551962836] [2024-11-16 08:06:35,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551962836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:35,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:35,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 08:06:35,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90079840] [2024-11-16 08:06:35,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:35,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 08:06:35,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:35,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 08:06:35,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:06:35,908 INFO L87 Difference]: Start difference. First operand 27498 states and 35787 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 5 states have internal predecessors, (95), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-16 08:06:39,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:39,665 INFO L93 Difference]: Finished difference Result 84135 states and 111947 transitions. [2024-11-16 08:06:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 08:06:39,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 5 states have internal predecessors, (95), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 112 [2024-11-16 08:06:39,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:39,864 INFO L225 Difference]: With dead ends: 84135 [2024-11-16 08:06:39,864 INFO L226 Difference]: Without dead ends: 56653 [2024-11-16 08:06:39,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2024-11-16 08:06:39,939 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 1239 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:39,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 1113 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 08:06:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56653 states. [2024-11-16 08:06:43,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56653 to 53751. [2024-11-16 08:06:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53751 states, 46023 states have (on average 1.2262781652651935) internal successors, (56437), 46756 states have internal predecessors, (56437), 4427 states have call successors, (4427), 2693 states have call predecessors, (4427), 3300 states have return successors, (8280), 4305 states have call predecessors, (8280), 4424 states have call successors, (8280) [2024-11-16 08:06:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53751 states to 53751 states and 69144 transitions. [2024-11-16 08:06:43,500 INFO L78 Accepts]: Start accepts. Automaton has 53751 states and 69144 transitions. Word has length 112 [2024-11-16 08:06:43,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:43,501 INFO L471 AbstractCegarLoop]: Abstraction has 53751 states and 69144 transitions. [2024-11-16 08:06:43,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 5 states have internal predecessors, (95), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-16 08:06:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 53751 states and 69144 transitions. [2024-11-16 08:06:43,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-16 08:06:43,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:43,509 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:43,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 08:06:43,509 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:43,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:43,510 INFO L85 PathProgramCache]: Analyzing trace with hash 626391789, now seen corresponding path program 1 times [2024-11-16 08:06:43,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:43,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793255152] [2024-11-16 08:06:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:43,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:43,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:43,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:43,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:43,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:43,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:43,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-16 08:06:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:43,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-16 08:06:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 08:06:43,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:43,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793255152] [2024-11-16 08:06:43,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793255152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 08:06:43,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279860029] [2024-11-16 08:06:43,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:43,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 08:06:43,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 08:06:43,607 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) [2024-11-16 08:06:43,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 08:06:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:43,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 08:06:43,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 08:06:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 08:06:43,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 08:06:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 08:06:44,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279860029] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 08:06:44,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 08:06:44,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 7] total 15 [2024-11-16 08:06:44,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208806256] [2024-11-16 08:06:44,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:44,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 08:06:44,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:44,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 08:06:44,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-16 08:06:44,050 INFO L87 Difference]: Start difference. First operand 53751 states and 69144 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:06:46,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:46,948 INFO L93 Difference]: Finished difference Result 59406 states and 76352 transitions. [2024-11-16 08:06:46,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 08:06:46,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 113 [2024-11-16 08:06:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:47,150 INFO L225 Difference]: With dead ends: 59406 [2024-11-16 08:06:47,151 INFO L226 Difference]: Without dead ends: 59402 [2024-11-16 08:06:47,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-16 08:06:47,175 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 527 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:47,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 1266 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 08:06:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59402 states. [2024-11-16 08:06:50,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59402 to 59165. [2024-11-16 08:06:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59165 states, 50693 states have (on average 1.226579606651806) internal successors, (62179), 51500 states have internal predecessors, (62179), 4843 states have call successors, (4843), 2951 states have call predecessors, (4843), 3628 states have return successors, (9015), 4717 states have call predecessors, (9015), 4840 states have call successors, (9015) [2024-11-16 08:06:50,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59165 states to 59165 states and 76037 transitions. [2024-11-16 08:06:50,402 INFO L78 Accepts]: Start accepts. Automaton has 59165 states and 76037 transitions. Word has length 113 [2024-11-16 08:06:50,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:50,403 INFO L471 AbstractCegarLoop]: Abstraction has 59165 states and 76037 transitions. [2024-11-16 08:06:50,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:06:50,403 INFO L276 IsEmpty]: Start isEmpty. Operand 59165 states and 76037 transitions. [2024-11-16 08:06:50,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-16 08:06:50,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:50,411 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:50,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 08:06:50,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 08:06:50,612 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:50,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:50,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1309769897, now seen corresponding path program 1 times [2024-11-16 08:06:50,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:50,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549461315] [2024-11-16 08:06:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:50,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:50,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:50,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:50,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:50,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:50,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:50,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-16 08:06:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:50,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-16 08:06:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:50,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-16 08:06:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-16 08:06:50,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:50,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549461315] [2024-11-16 08:06:50,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549461315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:50,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:50,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 08:06:50,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371604698] [2024-11-16 08:06:50,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:50,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 08:06:50,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:50,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 08:06:50,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 08:06:50,680 INFO L87 Difference]: Start difference. First operand 59165 states and 76037 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:06:54,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 08:06:54,043 INFO L93 Difference]: Finished difference Result 66590 states and 86084 transitions. [2024-11-16 08:06:54,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 08:06:54,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 114 [2024-11-16 08:06:54,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 08:06:54,229 INFO L225 Difference]: With dead ends: 66590 [2024-11-16 08:06:54,229 INFO L226 Difference]: Without dead ends: 63867 [2024-11-16 08:06:54,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-16 08:06:54,263 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 324 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 08:06:54,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 343 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 08:06:54,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63867 states. [2024-11-16 08:06:57,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63867 to 58824. [2024-11-16 08:06:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58824 states, 50410 states have (on average 1.2269986113866296) internal successors, (61853), 51215 states have internal predecessors, (61853), 4805 states have call successors, (4805), 2931 states have call predecessors, (4805), 3608 states have return successors, (8974), 4679 states have call predecessors, (8974), 4802 states have call successors, (8974) [2024-11-16 08:06:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58824 states to 58824 states and 75632 transitions. [2024-11-16 08:06:57,566 INFO L78 Accepts]: Start accepts. Automaton has 58824 states and 75632 transitions. Word has length 114 [2024-11-16 08:06:57,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 08:06:57,567 INFO L471 AbstractCegarLoop]: Abstraction has 58824 states and 75632 transitions. [2024-11-16 08:06:57,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 08:06:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 58824 states and 75632 transitions. [2024-11-16 08:06:57,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-16 08:06:57,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 08:06:57,581 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 08:06:57,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 08:06:57,581 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 08:06:57,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 08:06:57,582 INFO L85 PathProgramCache]: Analyzing trace with hash -995716220, now seen corresponding path program 1 times [2024-11-16 08:06:57,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 08:06:57,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506634597] [2024-11-16 08:06:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 08:06:57,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 08:06:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:57,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 08:06:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:57,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 08:06:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:57,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-16 08:06:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:57,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 08:06:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:57,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-16 08:06:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:57,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-16 08:06:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:57,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-16 08:06:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:57,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-16 08:06:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 08:06:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 08:06:57,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 08:06:57,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506634597] [2024-11-16 08:06:57,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506634597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 08:06:57,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 08:06:57,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 08:06:57,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888277295] [2024-11-16 08:06:57,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 08:06:57,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 08:06:57,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 08:06:57,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 08:06:57,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 08:06:57,695 INFO L87 Difference]: Start difference. First operand 58824 states and 75632 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 5 states have internal predecessors, (94), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)