./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.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 e0c7c69d3788b9174ce50b7ab42b39214a13bc3eceec60ee173c8e1ad7db186a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:01:48,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:01:48,452 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:01:48,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:01:48,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:01:48,472 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:01:48,472 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:01:48,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:01:48,473 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:01:48,473 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:01:48,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:01:48,474 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:01:48,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:01:48,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:01:48,475 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:01:48,475 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:01:48,475 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:01:48,476 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:01:48,476 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:01:48,476 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:01:48,476 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:01:48,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:01:48,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:01:48,477 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:01:48,478 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:01:48,478 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:01:48,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:01:48,478 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:01:48,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:01:48,479 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:01:48,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:01:48,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:01:48,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:01:48,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:01:48,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:01:48,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:01:48,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:01:48,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:01:48,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:01:48,481 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:01:48,481 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:01:48,482 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:01:48,482 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0c7c69d3788b9174ce50b7ab42b39214a13bc3eceec60ee173c8e1ad7db186a [2024-11-18 16:01:48,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:01:48,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:01:48,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:01:48,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:01:48,838 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:01:48,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-18 16:01:50,171 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:01:50,645 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:01:50,646 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-18 16:01:50,684 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3672d386/c6908cbd46744f8a8204bcacdf9ec2ff/FLAG2763f3769 [2024-11-18 16:01:50,805 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3672d386/c6908cbd46744f8a8204bcacdf9ec2ff [2024-11-18 16:01:50,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:01:50,809 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:01:50,810 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:01:50,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:01:50,814 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:01:50,815 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:01:50" (1/1) ... [2024-11-18 16:01:50,816 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8f8eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:50, skipping insertion in model container [2024-11-18 16:01:50,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:01:50" (1/1) ... [2024-11-18 16:01:50,915 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:01:51,227 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/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c[8712,8725] [2024-11-18 16:01:51,270 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/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c[14267,14280] [2024-11-18 16:01:51,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:01:51,889 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:01:51,919 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/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c[8712,8725] [2024-11-18 16:01:51,926 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/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c[14267,14280] [2024-11-18 16:01:52,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:01:52,343 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:01:52,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52 WrapperNode [2024-11-18 16:01:52,344 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:01:52,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:01:52,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:01:52,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:01:52,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52" (1/1) ... [2024-11-18 16:01:52,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52" (1/1) ... [2024-11-18 16:01:52,724 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5039 [2024-11-18 16:01:52,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:01:52,725 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:01:52,725 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:01:52,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:01:52,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52" (1/1) ... [2024-11-18 16:01:52,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52" (1/1) ... [2024-11-18 16:01:52,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52" (1/1) ... [2024-11-18 16:01:53,009 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]. [2024-11-18 16:01:53,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52" (1/1) ... [2024-11-18 16:01:53,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52" (1/1) ... [2024-11-18 16:01:53,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52" (1/1) ... [2024-11-18 16:01:53,172 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52" (1/1) ... [2024-11-18 16:01:53,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52" (1/1) ... [2024-11-18 16:01:53,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52" (1/1) ... [2024-11-18 16:01:53,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:01:53,241 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:01:53,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:01:53,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:01:53,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52" (1/1) ... [2024-11-18 16:01:53,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:01:53,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:01:53,270 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) [2024-11-18 16:01:53,272 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 [2024-11-18 16:01:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:01:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:01:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:01:53,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:01:53,388 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:01:53,390 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:01:56,731 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-11-18 16:01:56,731 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:01:56,763 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:01:56,763 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 16:01:56,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:01:56 BoogieIcfgContainer [2024-11-18 16:01:56,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:01:56,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:01:56,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:01:56,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:01:56,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:01:50" (1/3) ... [2024-11-18 16:01:56,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fc3c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:01:56, skipping insertion in model container [2024-11-18 16:01:56,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:01:52" (2/3) ... [2024-11-18 16:01:56,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fc3c3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:01:56, skipping insertion in model container [2024-11-18 16:01:56,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:01:56" (3/3) ... [2024-11-18 16:01:56,770 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-18 16:01:56,784 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:01:56,784 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:01:56,854 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:01:56,859 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;@13cc4be8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:01:56,859 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:01:56,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 16:01:56,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:56,873 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] [2024-11-18 16:01:56,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:56,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:56,877 INFO L85 PathProgramCache]: Analyzing trace with hash 593970293, now seen corresponding path program 1 times [2024-11-18 16:01:56,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:56,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044029165] [2024-11-18 16:01:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:56,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:57,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:57,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044029165] [2024-11-18 16:01:57,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044029165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:57,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:57,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 16:01:57,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498348454] [2024-11-18 16:01:57,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:57,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 16:01:57,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:57,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 16:01:57,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 16:01:57,137 INFO L87 Difference]: Start difference. First operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:57,217 INFO L93 Difference]: Finished difference Result 1743 states and 3312 transitions. [2024-11-18 16:01:57,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 16:01:57,219 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-18 16:01:57,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:57,240 INFO L225 Difference]: With dead ends: 1743 [2024-11-18 16:01:57,240 INFO L226 Difference]: Without dead ends: 821 [2024-11-18 16:01:57,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 16:01:57,252 INFO L432 NwaCegarLoop]: 1615 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:57,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:57,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-18 16:01:57,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2024-11-18 16:01:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8937728937728937) internal successors, (1551), 820 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1551 transitions. [2024-11-18 16:01:57,320 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1551 transitions. Word has length 22 [2024-11-18 16:01:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:57,320 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1551 transitions. [2024-11-18 16:01:57,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:57,320 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1551 transitions. [2024-11-18 16:01:57,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 16:01:57,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:57,321 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] [2024-11-18 16:01:57,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:01:57,322 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:57,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:57,323 INFO L85 PathProgramCache]: Analyzing trace with hash -427098061, now seen corresponding path program 1 times [2024-11-18 16:01:57,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:57,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344518841] [2024-11-18 16:01:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:57,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:57,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:57,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344518841] [2024-11-18 16:01:57,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344518841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:57,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:57,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:01:57,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819388649] [2024-11-18 16:01:57,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:57,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:01:57,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:57,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:01:57,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:01:57,474 INFO L87 Difference]: Start difference. First operand 821 states and 1551 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:57,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:57,529 INFO L93 Difference]: Finished difference Result 863 states and 1615 transitions. [2024-11-18 16:01:57,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:01:57,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-18 16:01:57,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:57,533 INFO L225 Difference]: With dead ends: 863 [2024-11-18 16:01:57,533 INFO L226 Difference]: Without dead ends: 821 [2024-11-18 16:01:57,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:01:57,535 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 0 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6168 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:57,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6168 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-11-18 16:01:57,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2024-11-18 16:01:57,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8656898656898657) internal successors, (1528), 820 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1528 transitions. [2024-11-18 16:01:57,559 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1528 transitions. Word has length 22 [2024-11-18 16:01:57,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:57,559 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1528 transitions. [2024-11-18 16:01:57,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:57,560 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1528 transitions. [2024-11-18 16:01:57,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-18 16:01:57,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:57,561 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] [2024-11-18 16:01:57,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:01:57,561 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:57,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:57,566 INFO L85 PathProgramCache]: Analyzing trace with hash 3301806, now seen corresponding path program 1 times [2024-11-18 16:01:57,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:57,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429580955] [2024-11-18 16:01:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:57,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:57,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:57,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429580955] [2024-11-18 16:01:57,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429580955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:57,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:57,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:01:57,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232312213] [2024-11-18 16:01:57,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:57,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:01:57,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:57,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:01:57,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:01:57,764 INFO L87 Difference]: Start difference. First operand 821 states and 1528 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:57,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:57,892 INFO L93 Difference]: Finished difference Result 1125 states and 2008 transitions. [2024-11-18 16:01:57,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:01:57,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-18 16:01:57,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:57,896 INFO L225 Difference]: With dead ends: 1125 [2024-11-18 16:01:57,897 INFO L226 Difference]: Without dead ends: 1087 [2024-11-18 16:01:57,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-18 16:01:57,898 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 6285 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6285 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:57,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6285 Valid, 2135 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:01:57,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2024-11-18 16:01:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 857. [2024-11-18 16:01:57,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 855 states have (on average 1.8538011695906433) internal successors, (1585), 856 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1585 transitions. [2024-11-18 16:01:57,914 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1585 transitions. Word has length 44 [2024-11-18 16:01:57,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:57,914 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1585 transitions. [2024-11-18 16:01:57,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1585 transitions. [2024-11-18 16:01:57,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 16:01:57,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:57,916 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] [2024-11-18 16:01:57,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:01:57,916 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:57,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:57,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1757336638, now seen corresponding path program 1 times [2024-11-18 16:01:57,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:57,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78518160] [2024-11-18 16:01:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:57,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:58,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:58,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78518160] [2024-11-18 16:01:58,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78518160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:58,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:58,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:01:58,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089001467] [2024-11-18 16:01:58,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:58,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:01:58,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:58,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:01:58,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:58,006 INFO L87 Difference]: Start difference. First operand 857 states and 1585 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:58,036 INFO L93 Difference]: Finished difference Result 994 states and 1800 transitions. [2024-11-18 16:01:58,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:01:58,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-18 16:01:58,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:58,040 INFO L225 Difference]: With dead ends: 994 [2024-11-18 16:01:58,041 INFO L226 Difference]: Without dead ends: 920 [2024-11-18 16:01:58,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:01:58,044 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 1476 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:58,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1577 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:58,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-11-18 16:01:58,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 916. [2024-11-18 16:01:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8326039387308535) internal successors, (1675), 915 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1675 transitions. [2024-11-18 16:01:58,063 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1675 transitions. Word has length 46 [2024-11-18 16:01:58,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:58,063 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1675 transitions. [2024-11-18 16:01:58,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1675 transitions. [2024-11-18 16:01:58,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 16:01:58,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:58,067 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] [2024-11-18 16:01:58,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:01:58,067 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:58,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:58,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1823830150, now seen corresponding path program 1 times [2024-11-18 16:01:58,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:58,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337773334] [2024-11-18 16:01:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:58,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:58,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:58,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:58,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337773334] [2024-11-18 16:01:58,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337773334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:58,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:58,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:01:58,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895470318] [2024-11-18 16:01:58,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:58,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:01:58,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:58,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:01:58,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:01:58,364 INFO L87 Difference]: Start difference. First operand 916 states and 1675 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:58,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:58,615 INFO L93 Difference]: Finished difference Result 1051 states and 1883 transitions. [2024-11-18 16:01:58,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:01:58,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-18 16:01:58,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:58,619 INFO L225 Difference]: With dead ends: 1051 [2024-11-18 16:01:58,619 INFO L226 Difference]: Without dead ends: 918 [2024-11-18 16:01:58,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-18 16:01:58,624 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 1493 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:58,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1748 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:01:58,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2024-11-18 16:01:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 916. [2024-11-18 16:01:58,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8304157549234135) internal successors, (1673), 915 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:58,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1673 transitions. [2024-11-18 16:01:58,659 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1673 transitions. Word has length 46 [2024-11-18 16:01:58,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:58,659 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1673 transitions. [2024-11-18 16:01:58,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:58,660 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1673 transitions. [2024-11-18 16:01:58,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-18 16:01:58,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:58,664 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] [2024-11-18 16:01:58,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:01:58,664 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:58,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:58,665 INFO L85 PathProgramCache]: Analyzing trace with hash 289436656, now seen corresponding path program 1 times [2024-11-18 16:01:58,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:58,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005015843] [2024-11-18 16:01:58,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:58,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:58,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:58,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005015843] [2024-11-18 16:01:58,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005015843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:58,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:58,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:01:58,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945248788] [2024-11-18 16:01:58,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:58,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:01:58,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:58,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:01:58,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:01:58,825 INFO L87 Difference]: Start difference. First operand 916 states and 1673 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:58,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:01:58,856 INFO L93 Difference]: Finished difference Result 924 states and 1682 transitions. [2024-11-18 16:01:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:01:58,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-18 16:01:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:01:58,859 INFO L225 Difference]: With dead ends: 924 [2024-11-18 16:01:58,859 INFO L226 Difference]: Without dead ends: 922 [2024-11-18 16:01:58,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:01:58,860 INFO L432 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6091 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:01:58,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6091 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:01:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-11-18 16:01:58,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 922. [2024-11-18 16:01:58,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 920 states have (on average 1.8239130434782609) internal successors, (1678), 921 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:58,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1678 transitions. [2024-11-18 16:01:58,874 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1678 transitions. Word has length 47 [2024-11-18 16:01:58,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:01:58,875 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1678 transitions. [2024-11-18 16:01:58,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:01:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1678 transitions. [2024-11-18 16:01:58,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 16:01:58,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:01:58,876 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] [2024-11-18 16:01:58,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 16:01:58,876 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:01:58,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:01:58,877 INFO L85 PathProgramCache]: Analyzing trace with hash 6109941, now seen corresponding path program 1 times [2024-11-18 16:01:58,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:01:58,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429355144] [2024-11-18 16:01:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:01:58,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:01:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:01:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:01:58,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:01:58,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429355144] [2024-11-18 16:01:58,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429355144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:01:58,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:01:58,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:01:58,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605811473] [2024-11-18 16:01:58,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:01:58,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:01:58,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:01:58,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:01:58,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:01:58,977 INFO L87 Difference]: Start difference. First operand 922 states and 1678 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:04,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:04,463 INFO L93 Difference]: Finished difference Result 3177 states and 5987 transitions. [2024-11-18 16:02:04,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:02:04,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-18 16:02:04,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:04,470 INFO L225 Difference]: With dead ends: 3177 [2024-11-18 16:02:04,471 INFO L226 Difference]: Without dead ends: 2424 [2024-11-18 16:02:04,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:02:04,472 INFO L432 NwaCegarLoop]: 764 mSDtfsCounter, 2395 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:04,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2395 Valid, 782 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-18 16:02:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2024-11-18 16:02:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2424. [2024-11-18 16:02:04,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 2422 states have (on average 1.565648224607762) internal successors, (3792), 2423 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3792 transitions. [2024-11-18 16:02:04,514 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3792 transitions. Word has length 48 [2024-11-18 16:02:04,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:04,514 INFO L471 AbstractCegarLoop]: Abstraction has 2424 states and 3792 transitions. [2024-11-18 16:02:04,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3792 transitions. [2024-11-18 16:02:04,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 16:02:04,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:04,515 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] [2024-11-18 16:02:04,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 16:02:04,516 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:04,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2036800602, now seen corresponding path program 1 times [2024-11-18 16:02:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:04,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416255186] [2024-11-18 16:02:04,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:04,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:04,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:04,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416255186] [2024-11-18 16:02:04,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416255186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:02:04,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:02:04,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:02:04,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916083566] [2024-11-18 16:02:04,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:02:04,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:02:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:04,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:02:04,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:04,578 INFO L87 Difference]: Start difference. First operand 2424 states and 3792 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:04,634 INFO L93 Difference]: Finished difference Result 2686 states and 4184 transitions. [2024-11-18 16:02:04,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:02:04,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-18 16:02:04,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:04,654 INFO L225 Difference]: With dead ends: 2686 [2024-11-18 16:02:04,655 INFO L226 Difference]: Without dead ends: 2547 [2024-11-18 16:02:04,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:04,657 INFO L432 NwaCegarLoop]: 1565 mSDtfsCounter, 1487 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:04,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1630 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:02:04,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2024-11-18 16:02:04,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2545. [2024-11-18 16:02:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2543 states have (on average 1.5607550137632717) internal successors, (3969), 2544 states have internal predecessors, (3969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3969 transitions. [2024-11-18 16:02:04,715 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3969 transitions. Word has length 48 [2024-11-18 16:02:04,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:04,716 INFO L471 AbstractCegarLoop]: Abstraction has 2545 states and 3969 transitions. [2024-11-18 16:02:04,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:04,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3969 transitions. [2024-11-18 16:02:04,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 16:02:04,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:04,717 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] [2024-11-18 16:02:04,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 16:02:04,718 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:04,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash 42697894, now seen corresponding path program 1 times [2024-11-18 16:02:04,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:04,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960383744] [2024-11-18 16:02:04,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:04,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:04,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:04,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960383744] [2024-11-18 16:02:04,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960383744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:02:04,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:02:04,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:02:04,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508317758] [2024-11-18 16:02:04,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:02:04,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:02:04,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:04,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:02:04,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:04,790 INFO L87 Difference]: Start difference. First operand 2545 states and 3969 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:04,836 INFO L93 Difference]: Finished difference Result 3033 states and 4687 transitions. [2024-11-18 16:02:04,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:02:04,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-18 16:02:04,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:04,844 INFO L225 Difference]: With dead ends: 3033 [2024-11-18 16:02:04,844 INFO L226 Difference]: Without dead ends: 2773 [2024-11-18 16:02:04,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:04,848 INFO L432 NwaCegarLoop]: 1563 mSDtfsCounter, 1485 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:04,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1632 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:02:04,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2024-11-18 16:02:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2771. [2024-11-18 16:02:04,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 2769 states have (on average 1.549656915854099) internal successors, (4291), 2770 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 4291 transitions. [2024-11-18 16:02:04,907 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 4291 transitions. Word has length 48 [2024-11-18 16:02:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:04,908 INFO L471 AbstractCegarLoop]: Abstraction has 2771 states and 4291 transitions. [2024-11-18 16:02:04,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:04,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 4291 transitions. [2024-11-18 16:02:04,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-18 16:02:04,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:04,909 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] [2024-11-18 16:02:04,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 16:02:04,909 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:04,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:04,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1823630758, now seen corresponding path program 1 times [2024-11-18 16:02:04,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:04,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101526526] [2024-11-18 16:02:04,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:04,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:04,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:04,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:04,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101526526] [2024-11-18 16:02:04,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101526526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:02:04,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:02:04,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:02:04,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488097279] [2024-11-18 16:02:04,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:02:04,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:02:04,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:04,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:02:04,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:04,979 INFO L87 Difference]: Start difference. First operand 2771 states and 4291 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:05,035 INFO L93 Difference]: Finished difference Result 3679 states and 5597 transitions. [2024-11-18 16:02:05,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:02:05,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-18 16:02:05,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:05,044 INFO L225 Difference]: With dead ends: 3679 [2024-11-18 16:02:05,045 INFO L226 Difference]: Without dead ends: 3193 [2024-11-18 16:02:05,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:05,047 INFO L432 NwaCegarLoop]: 1561 mSDtfsCounter, 1483 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:05,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1634 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:02:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2024-11-18 16:02:05,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 3191. [2024-11-18 16:02:05,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3191 states, 3189 states have (on average 1.5274380683599875) internal successors, (4871), 3190 states have internal predecessors, (4871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:05,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3191 states to 3191 states and 4871 transitions. [2024-11-18 16:02:05,103 INFO L78 Accepts]: Start accepts. Automaton has 3191 states and 4871 transitions. Word has length 48 [2024-11-18 16:02:05,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:05,104 INFO L471 AbstractCegarLoop]: Abstraction has 3191 states and 4871 transitions. [2024-11-18 16:02:05,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:05,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3191 states and 4871 transitions. [2024-11-18 16:02:05,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-18 16:02:05,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:05,104 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] [2024-11-18 16:02:05,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 16:02:05,105 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:05,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:05,105 INFO L85 PathProgramCache]: Analyzing trace with hash 246335073, now seen corresponding path program 1 times [2024-11-18 16:02:05,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:05,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372765256] [2024-11-18 16:02:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:05,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:05,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:05,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372765256] [2024-11-18 16:02:05,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372765256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:02:05,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:02:05,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:02:05,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513282949] [2024-11-18 16:02:05,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:02:05,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:02:05,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:05,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:02:05,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:05,148 INFO L87 Difference]: Start difference. First operand 3191 states and 4871 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:05,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:05,195 INFO L93 Difference]: Finished difference Result 4158 states and 6269 transitions. [2024-11-18 16:02:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:02:05,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-18 16:02:05,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:05,205 INFO L225 Difference]: With dead ends: 4158 [2024-11-18 16:02:05,205 INFO L226 Difference]: Without dead ends: 3627 [2024-11-18 16:02:05,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:05,207 INFO L432 NwaCegarLoop]: 1570 mSDtfsCounter, 1486 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:05,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:02:05,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3627 states. [2024-11-18 16:02:05,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3627 to 3625. [2024-11-18 16:02:05,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 3623 states have (on average 1.5106265525807343) internal successors, (5473), 3624 states have internal predecessors, (5473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 5473 transitions. [2024-11-18 16:02:05,261 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 5473 transitions. Word has length 50 [2024-11-18 16:02:05,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:05,261 INFO L471 AbstractCegarLoop]: Abstraction has 3625 states and 5473 transitions. [2024-11-18 16:02:05,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:05,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 5473 transitions. [2024-11-18 16:02:05,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:02:05,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:05,262 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 16:02:05,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 16:02:05,262 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:05,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:05,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1523853909, now seen corresponding path program 1 times [2024-11-18 16:02:05,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:05,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492931235] [2024-11-18 16:02:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:05,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 16:02:05,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:05,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492931235] [2024-11-18 16:02:05,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492931235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:02:05,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:02:05,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:02:05,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308109016] [2024-11-18 16:02:05,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:02:05,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:02:05,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:05,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:02:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:02:05,378 INFO L87 Difference]: Start difference. First operand 3625 states and 5473 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:05,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:05,638 INFO L93 Difference]: Finished difference Result 9275 states and 13430 transitions. [2024-11-18 16:02:05,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:02:05,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-18 16:02:05,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:05,670 INFO L225 Difference]: With dead ends: 9275 [2024-11-18 16:02:05,671 INFO L226 Difference]: Without dead ends: 7937 [2024-11-18 16:02:05,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:02:05,675 INFO L432 NwaCegarLoop]: 1582 mSDtfsCounter, 4663 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:05,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4663 Valid, 3368 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:02:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2024-11-18 16:02:05,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 4961. [2024-11-18 16:02:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4961 states, 4959 states have (on average 1.4795321637426901) internal successors, (7337), 4960 states have internal predecessors, (7337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:05,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4961 states to 4961 states and 7337 transitions. [2024-11-18 16:02:05,786 INFO L78 Accepts]: Start accepts. Automaton has 4961 states and 7337 transitions. Word has length 65 [2024-11-18 16:02:05,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:05,786 INFO L471 AbstractCegarLoop]: Abstraction has 4961 states and 7337 transitions. [2024-11-18 16:02:05,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:05,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4961 states and 7337 transitions. [2024-11-18 16:02:05,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:02:05,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:05,788 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 16:02:05,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-18 16:02:05,788 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:05,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:05,789 INFO L85 PathProgramCache]: Analyzing trace with hash 555644587, now seen corresponding path program 1 times [2024-11-18 16:02:05,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:05,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601455262] [2024-11-18 16:02:05,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:05,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 16:02:05,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:05,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601455262] [2024-11-18 16:02:05,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601455262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:02:05,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:02:05,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:02:05,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657505317] [2024-11-18 16:02:05,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:02:05,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:02:05,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:05,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:02:05,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:02:05,902 INFO L87 Difference]: Start difference. First operand 4961 states and 7337 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:06,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:06,096 INFO L93 Difference]: Finished difference Result 10611 states and 15294 transitions. [2024-11-18 16:02:06,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:02:06,097 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-18 16:02:06,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:06,115 INFO L225 Difference]: With dead ends: 10611 [2024-11-18 16:02:06,115 INFO L226 Difference]: Without dead ends: 9273 [2024-11-18 16:02:06,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:02:06,119 INFO L432 NwaCegarLoop]: 1579 mSDtfsCounter, 4692 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4692 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:06,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4692 Valid, 3303 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:02:06,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9273 states. [2024-11-18 16:02:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9273 to 6969. [2024-11-18 16:02:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6969 states, 6967 states have (on average 1.451557341753983) internal successors, (10113), 6968 states have internal predecessors, (10113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:06,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6969 states to 6969 states and 10113 transitions. [2024-11-18 16:02:06,254 INFO L78 Accepts]: Start accepts. Automaton has 6969 states and 10113 transitions. Word has length 65 [2024-11-18 16:02:06,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:06,255 INFO L471 AbstractCegarLoop]: Abstraction has 6969 states and 10113 transitions. [2024-11-18 16:02:06,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:06,256 INFO L276 IsEmpty]: Start isEmpty. Operand 6969 states and 10113 transitions. [2024-11-18 16:02:06,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:02:06,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:06,257 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 16:02:06,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 16:02:06,257 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:06,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:06,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1958389845, now seen corresponding path program 1 times [2024-11-18 16:02:06,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:06,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720435438] [2024-11-18 16:02:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:06,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 16:02:06,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:06,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720435438] [2024-11-18 16:02:06,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720435438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:02:06,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:02:06,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:02:06,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87068198] [2024-11-18 16:02:06,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:02:06,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:02:06,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:06,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:02:06,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:02:06,422 INFO L87 Difference]: Start difference. First operand 6969 states and 10113 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:06,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:06,591 INFO L93 Difference]: Finished difference Result 11947 states and 17158 transitions. [2024-11-18 16:02:06,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:02:06,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-18 16:02:06,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:06,607 INFO L225 Difference]: With dead ends: 11947 [2024-11-18 16:02:06,607 INFO L226 Difference]: Without dead ends: 10609 [2024-11-18 16:02:06,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:02:06,612 INFO L432 NwaCegarLoop]: 1581 mSDtfsCounter, 4673 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4673 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:06,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4673 Valid, 3337 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:02:06,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10609 states. [2024-11-18 16:02:06,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10609 to 8305. [2024-11-18 16:02:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8305 states, 8303 states have (on average 1.4424906660243286) internal successors, (11977), 8304 states have internal predecessors, (11977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8305 states to 8305 states and 11977 transitions. [2024-11-18 16:02:06,828 INFO L78 Accepts]: Start accepts. Automaton has 8305 states and 11977 transitions. Word has length 65 [2024-11-18 16:02:06,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:06,828 INFO L471 AbstractCegarLoop]: Abstraction has 8305 states and 11977 transitions. [2024-11-18 16:02:06,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 8305 states and 11977 transitions. [2024-11-18 16:02:06,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 16:02:06,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:06,829 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] [2024-11-18 16:02:06,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 16:02:06,830 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:06,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:06,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1188964029, now seen corresponding path program 1 times [2024-11-18 16:02:06,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:06,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661056688] [2024-11-18 16:02:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:06,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:06,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:06,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661056688] [2024-11-18 16:02:06,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661056688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:02:06,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:02:06,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:02:06,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185595624] [2024-11-18 16:02:06,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:02:06,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:02:06,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:06,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:02:06,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:06,903 INFO L87 Difference]: Start difference. First operand 8305 states and 11977 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:06,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:06,970 INFO L93 Difference]: Finished difference Result 12647 states and 18118 transitions. [2024-11-18 16:02:06,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:02:06,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-18 16:02:06,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:06,979 INFO L225 Difference]: With dead ends: 12647 [2024-11-18 16:02:06,979 INFO L226 Difference]: Without dead ends: 6629 [2024-11-18 16:02:06,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:06,987 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 42 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:06,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3073 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:02:06,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6629 states. [2024-11-18 16:02:07,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6629 to 6627. [2024-11-18 16:02:07,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6627 states, 6625 states have (on average 1.4567547169811321) internal successors, (9651), 6626 states have internal predecessors, (9651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6627 states to 6627 states and 9651 transitions. [2024-11-18 16:02:07,087 INFO L78 Accepts]: Start accepts. Automaton has 6627 states and 9651 transitions. Word has length 67 [2024-11-18 16:02:07,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:07,087 INFO L471 AbstractCegarLoop]: Abstraction has 6627 states and 9651 transitions. [2024-11-18 16:02:07,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6627 states and 9651 transitions. [2024-11-18 16:02:07,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 16:02:07,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:07,089 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 16:02:07,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 16:02:07,089 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:07,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:07,089 INFO L85 PathProgramCache]: Analyzing trace with hash -733131994, now seen corresponding path program 1 times [2024-11-18 16:02:07,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:07,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983243645] [2024-11-18 16:02:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:07,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 16:02:07,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:07,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983243645] [2024-11-18 16:02:07,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983243645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:02:07,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:02:07,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:02:07,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503662381] [2024-11-18 16:02:07,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:02:07,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:02:07,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:07,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:02:07,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:02:07,179 INFO L87 Difference]: Start difference. First operand 6627 states and 9651 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:07,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:07,338 INFO L93 Difference]: Finished difference Result 10477 states and 15096 transitions. [2024-11-18 16:02:07,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:02:07,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-18 16:02:07,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:07,354 INFO L225 Difference]: With dead ends: 10477 [2024-11-18 16:02:07,355 INFO L226 Difference]: Without dead ends: 9515 [2024-11-18 16:02:07,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:02:07,360 INFO L432 NwaCegarLoop]: 1577 mSDtfsCounter, 4667 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3393 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:07,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3393 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:02:07,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9515 states. [2024-11-18 16:02:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9515 to 7587. [2024-11-18 16:02:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7587 states, 7585 states have (on average 1.4495715227422545) internal successors, (10995), 7586 states have internal predecessors, (10995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7587 states to 7587 states and 10995 transitions. [2024-11-18 16:02:07,645 INFO L78 Accepts]: Start accepts. Automaton has 7587 states and 10995 transitions. Word has length 67 [2024-11-18 16:02:07,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:07,645 INFO L471 AbstractCegarLoop]: Abstraction has 7587 states and 10995 transitions. [2024-11-18 16:02:07,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:07,646 INFO L276 IsEmpty]: Start isEmpty. Operand 7587 states and 10995 transitions. [2024-11-18 16:02:07,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 16:02:07,647 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:07,647 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 16:02:07,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 16:02:07,647 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:07,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:07,648 INFO L85 PathProgramCache]: Analyzing trace with hash 548136257, now seen corresponding path program 1 times [2024-11-18 16:02:07,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:07,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106246949] [2024-11-18 16:02:07,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:07,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:07,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:07,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106246949] [2024-11-18 16:02:07,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106246949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:02:07,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:02:07,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:02:07,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909198892] [2024-11-18 16:02:07,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:02:07,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:02:07,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:07,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:02:07,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:07,722 INFO L87 Difference]: Start difference. First operand 7587 states and 10995 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:07,780 INFO L93 Difference]: Finished difference Result 10231 states and 14693 transitions. [2024-11-18 16:02:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:02:07,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-18 16:02:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:07,788 INFO L225 Difference]: With dead ends: 10231 [2024-11-18 16:02:07,788 INFO L226 Difference]: Without dead ends: 4949 [2024-11-18 16:02:07,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:07,795 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:07,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3058 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:02:07,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2024-11-18 16:02:07,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4947. [2024-11-18 16:02:07,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4947 states, 4945 states have (on average 1.4671385237613752) internal successors, (7255), 4946 states have internal predecessors, (7255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:07,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 7255 transitions. [2024-11-18 16:02:07,872 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 7255 transitions. Word has length 68 [2024-11-18 16:02:07,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:07,873 INFO L471 AbstractCegarLoop]: Abstraction has 4947 states and 7255 transitions. [2024-11-18 16:02:07,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:07,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 7255 transitions. [2024-11-18 16:02:07,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 16:02:07,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:07,874 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 16:02:07,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 16:02:07,874 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:07,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:07,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1967598547, now seen corresponding path program 1 times [2024-11-18 16:02:07,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:07,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846402822] [2024-11-18 16:02:07,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:07,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:07,970 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:07,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:07,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846402822] [2024-11-18 16:02:07,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846402822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:02:07,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:02:07,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:02:07,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110145040] [2024-11-18 16:02:07,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:02:07,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:02:07,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:02:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:07,972 INFO L87 Difference]: Start difference. First operand 4947 states and 7255 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:08,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:08,007 INFO L93 Difference]: Finished difference Result 6271 states and 9083 transitions. [2024-11-18 16:02:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:02:08,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-18 16:02:08,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:08,013 INFO L225 Difference]: With dead ends: 6271 [2024-11-18 16:02:08,014 INFO L226 Difference]: Without dead ends: 3629 [2024-11-18 16:02:08,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:08,017 INFO L432 NwaCegarLoop]: 1546 mSDtfsCounter, 34 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:08,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:02:08,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2024-11-18 16:02:08,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3627. [2024-11-18 16:02:08,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3625 states have (on average 1.4915862068965517) internal successors, (5407), 3626 states have internal predecessors, (5407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 5407 transitions. [2024-11-18 16:02:08,073 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 5407 transitions. Word has length 70 [2024-11-18 16:02:08,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:08,074 INFO L471 AbstractCegarLoop]: Abstraction has 3627 states and 5407 transitions. [2024-11-18 16:02:08,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:08,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 5407 transitions. [2024-11-18 16:02:08,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 16:02:08,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:08,075 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 16:02:08,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 16:02:08,075 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:08,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:08,076 INFO L85 PathProgramCache]: Analyzing trace with hash -673918747, now seen corresponding path program 1 times [2024-11-18 16:02:08,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:08,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869837387] [2024-11-18 16:02:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:08,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:08,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:08,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869837387] [2024-11-18 16:02:08,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869837387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:02:08,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:02:08,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:02:08,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247298429] [2024-11-18 16:02:08,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:02:08,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:02:08,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:08,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:02:08,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:08,148 INFO L87 Difference]: Start difference. First operand 3627 states and 5407 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:08,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:08,175 INFO L93 Difference]: Finished difference Result 4291 states and 6311 transitions. [2024-11-18 16:02:08,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:02:08,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-18 16:02:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:08,181 INFO L225 Difference]: With dead ends: 4291 [2024-11-18 16:02:08,181 INFO L226 Difference]: Without dead ends: 2969 [2024-11-18 16:02:08,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:02:08,183 INFO L432 NwaCegarLoop]: 1539 mSDtfsCounter, 31 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:08,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:02:08,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2024-11-18 16:02:08,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2967. [2024-11-18 16:02:08,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2965 states have (on average 1.5156829679595278) internal successors, (4494), 2966 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:08,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 4494 transitions. [2024-11-18 16:02:08,221 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 4494 transitions. Word has length 72 [2024-11-18 16:02:08,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:08,221 INFO L471 AbstractCegarLoop]: Abstraction has 2967 states and 4494 transitions. [2024-11-18 16:02:08,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:08,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 4494 transitions. [2024-11-18 16:02:08,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 16:02:08,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:08,222 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 16:02:08,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 16:02:08,223 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:08,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:08,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1516893303, now seen corresponding path program 1 times [2024-11-18 16:02:08,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:08,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143610900] [2024-11-18 16:02:08,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:08,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:09,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:09,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143610900] [2024-11-18 16:02:09,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143610900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:02:09,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540585318] [2024-11-18 16:02:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:09,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:02:09,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:02:09,587 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) [2024-11-18 16:02:09,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 16:02:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:09,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 16:02:09,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:02:10,423 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:10,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:02:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:11,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540585318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:02:11,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:02:11,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-11-18 16:02:11,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649661959] [2024-11-18 16:02:11,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:02:11,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 16:02:11,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:11,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 16:02:11,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-11-18 16:02:11,634 INFO L87 Difference]: Start difference. First operand 2967 states and 4494 transitions. Second operand has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:14,006 INFO L93 Difference]: Finished difference Result 5331 states and 7678 transitions. [2024-11-18 16:02:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-18 16:02:14,006 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-18 16:02:14,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:14,014 INFO L225 Difference]: With dead ends: 5331 [2024-11-18 16:02:14,014 INFO L226 Difference]: Without dead ends: 4669 [2024-11-18 16:02:14,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=858, Invalid=3174, Unknown=0, NotChecked=0, Total=4032 [2024-11-18 16:02:14,017 INFO L432 NwaCegarLoop]: 1493 mSDtfsCounter, 17233 mSDsluCounter, 6475 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17233 SdHoareTripleChecker+Valid, 7968 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:14,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17233 Valid, 7968 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:02:14,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4669 states. [2024-11-18 16:02:14,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4669 to 4606. [2024-11-18 16:02:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4606 states, 4604 states have (on average 1.4443961772371852) internal successors, (6650), 4605 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:14,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4606 states to 4606 states and 6650 transitions. [2024-11-18 16:02:14,086 INFO L78 Accepts]: Start accepts. Automaton has 4606 states and 6650 transitions. Word has length 74 [2024-11-18 16:02:14,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:14,087 INFO L471 AbstractCegarLoop]: Abstraction has 4606 states and 6650 transitions. [2024-11-18 16:02:14,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:14,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states and 6650 transitions. [2024-11-18 16:02:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 16:02:14,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:14,088 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 16:02:14,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 16:02:14,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:02:14,289 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:14,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:14,290 INFO L85 PathProgramCache]: Analyzing trace with hash 217982714, now seen corresponding path program 1 times [2024-11-18 16:02:14,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:14,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600219646] [2024-11-18 16:02:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:14,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:14,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:14,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600219646] [2024-11-18 16:02:14,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600219646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:02:14,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519044653] [2024-11-18 16:02:14,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:14,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:02:14,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:02:14,627 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) [2024-11-18 16:02:14,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 16:02:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:14,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 16:02:14,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:02:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:15,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:02:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:15,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519044653] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:02:15,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:02:15,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-18 16:02:15,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701696016] [2024-11-18 16:02:15,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:02:15,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 16:02:15,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:15,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 16:02:15,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-18 16:02:15,675 INFO L87 Difference]: Start difference. First operand 4606 states and 6650 transitions. Second operand has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:16,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:16,959 INFO L93 Difference]: Finished difference Result 11183 states and 15455 transitions. [2024-11-18 16:02:16,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 16:02:16,960 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-18 16:02:16,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:16,974 INFO L225 Difference]: With dead ends: 11183 [2024-11-18 16:02:16,974 INFO L226 Difference]: Without dead ends: 8882 [2024-11-18 16:02:16,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=457, Invalid=1613, Unknown=0, NotChecked=0, Total=2070 [2024-11-18 16:02:16,979 INFO L432 NwaCegarLoop]: 1494 mSDtfsCounter, 19890 mSDsluCounter, 6312 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19890 SdHoareTripleChecker+Valid, 7806 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:16,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19890 Valid, 7806 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:02:16,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8882 states. [2024-11-18 16:02:17,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8882 to 8841. [2024-11-18 16:02:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8841 states, 8839 states have (on average 1.3808123090847382) internal successors, (12205), 8840 states have internal predecessors, (12205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8841 states to 8841 states and 12205 transitions. [2024-11-18 16:02:17,140 INFO L78 Accepts]: Start accepts. Automaton has 8841 states and 12205 transitions. Word has length 75 [2024-11-18 16:02:17,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:17,140 INFO L471 AbstractCegarLoop]: Abstraction has 8841 states and 12205 transitions. [2024-11-18 16:02:17,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:17,141 INFO L276 IsEmpty]: Start isEmpty. Operand 8841 states and 12205 transitions. [2024-11-18 16:02:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 16:02:17,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:17,142 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 16:02:17,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 16:02:17,345 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,SelfDestructingSolverStorable20 [2024-11-18 16:02:17,346 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:17,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:17,347 INFO L85 PathProgramCache]: Analyzing trace with hash -268185879, now seen corresponding path program 1 times [2024-11-18 16:02:17,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:17,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593521463] [2024-11-18 16:02:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:17,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:17,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:17,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593521463] [2024-11-18 16:02:17,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593521463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:02:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322011826] [2024-11-18 16:02:17,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:17,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:02:17,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:02:17,690 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) [2024-11-18 16:02:17,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 16:02:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:17,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 16:02:17,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:02:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:18,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:02:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:18,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322011826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:02:18,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:02:18,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2024-11-18 16:02:18,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840964580] [2024-11-18 16:02:18,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:02:18,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 16:02:18,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:18,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 16:02:18,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2024-11-18 16:02:18,853 INFO L87 Difference]: Start difference. First operand 8841 states and 12205 transitions. Second operand has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:02:19,571 INFO L93 Difference]: Finished difference Result 20518 states and 27641 transitions. [2024-11-18 16:02:19,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 16:02:19,573 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-18 16:02:19,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:02:19,587 INFO L225 Difference]: With dead ends: 20518 [2024-11-18 16:02:19,587 INFO L226 Difference]: Without dead ends: 13982 [2024-11-18 16:02:19,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 16:02:19,596 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 7615 mSDsluCounter, 6420 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7615 SdHoareTripleChecker+Valid, 7937 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 16:02:19,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7615 Valid, 7937 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 16:02:19,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13982 states. [2024-11-18 16:02:19,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13982 to 13340. [2024-11-18 16:02:19,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13340 states, 13338 states have (on average 1.3480281901334532) internal successors, (17980), 13339 states have internal predecessors, (17980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:19,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13340 states to 13340 states and 17980 transitions. [2024-11-18 16:02:19,872 INFO L78 Accepts]: Start accepts. Automaton has 13340 states and 17980 transitions. Word has length 76 [2024-11-18 16:02:19,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:02:19,872 INFO L471 AbstractCegarLoop]: Abstraction has 13340 states and 17980 transitions. [2024-11-18 16:02:19,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:02:19,873 INFO L276 IsEmpty]: Start isEmpty. Operand 13340 states and 17980 transitions. [2024-11-18 16:02:19,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 16:02:19,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:02:19,874 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 16:02:19,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 16:02:20,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:02:20,079 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:02:20,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:02:20,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1113650506, now seen corresponding path program 1 times [2024-11-18 16:02:20,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:02:20,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480856470] [2024-11-18 16:02:20,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:20,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:02:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:21,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:02:21,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480856470] [2024-11-18 16:02:21,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480856470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:02:21,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883679166] [2024-11-18 16:02:21,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:02:21,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:02:21,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:02:21,186 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 16:02:21,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 16:02:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:02:21,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-18 16:02:21,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:02:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:48,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:02:52,552 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:02:52,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883679166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:02:52,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:02:52,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25, 23] total 60 [2024-11-18 16:02:52,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228930578] [2024-11-18 16:02:52,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:02:52,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-18 16:02:52,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:02:52,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-18 16:02:52,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=3178, Unknown=4, NotChecked=0, Total=3540 [2024-11-18 16:02:52,554 INFO L87 Difference]: Start difference. First operand 13340 states and 17980 transitions. Second operand has 60 states, 60 states have (on average 3.4833333333333334) internal successors, (209), 60 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 16:03:01,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-18 16:03:06,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-18 16:03:16,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0]