./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-97.i --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/hardness-nfm22/hardness_operatoramount_amount250_file-97.i -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 71088fcc9fbf7fdd414b5a09b7fb834bc17213c2f570683779dd1957ada6c960 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:49:25,505 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:49:25,580 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:49:25,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:49:25,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:49:25,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:49:25,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:49:25,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:49:25,614 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:49:25,614 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:49:25,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:49:25,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:49:25,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:49:25,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:49:25,616 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:49:25,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:49:25,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:49:25,618 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:49:25,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:49:25,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:49:25,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:49:25,621 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:49:25,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:49:25,622 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:49:25,622 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:49:25,622 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:49:25,623 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:49:25,623 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:49:25,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:49:25,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:49:25,624 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:49:25,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:49:25,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:49:25,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:49:25,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:49:25,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:49:25,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:49:25,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:49:25,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:49:25,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:49:25,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:49:25,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:49:25,629 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71088fcc9fbf7fdd414b5a09b7fb834bc17213c2f570683779dd1957ada6c960 [2024-11-18 23:49:25,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:49:25,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:49:25,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:49:25,932 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:49:25,933 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:49:25,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-97.i [2024-11-18 23:49:27,382 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:49:27,672 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:49:27,672 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-97.i [2024-11-18 23:49:27,682 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ff28df1/bf0bd534b64b42a5b46fa2e3e0f66668/FLAGa934188c2 [2024-11-18 23:49:27,953 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ff28df1/bf0bd534b64b42a5b46fa2e3e0f66668 [2024-11-18 23:49:27,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:49:27,956 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:49:27,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:49:27,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:49:27,962 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:49:27,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:49:27" (1/1) ... [2024-11-18 23:49:27,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d568ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:27, skipping insertion in model container [2024-11-18 23:49:27,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:49:27" (1/1) ... [2024-11-18 23:49:28,007 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:49:28,162 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/hardness-nfm22/hardness_operatoramount_amount250_file-97.i[916,929] [2024-11-18 23:49:28,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:49:28,326 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:49:28,336 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/hardness-nfm22/hardness_operatoramount_amount250_file-97.i[916,929] [2024-11-18 23:49:28,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:49:28,420 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:49:28,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28 WrapperNode [2024-11-18 23:49:28,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:49:28,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:49:28,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:49:28,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:49:28,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28" (1/1) ... [2024-11-18 23:49:28,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28" (1/1) ... [2024-11-18 23:49:28,500 INFO L138 Inliner]: procedures = 26, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 470 [2024-11-18 23:49:28,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:49:28,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:49:28,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:49:28,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:49:28,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28" (1/1) ... [2024-11-18 23:49:28,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28" (1/1) ... [2024-11-18 23:49:28,525 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28" (1/1) ... [2024-11-18 23:49:28,572 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 23:49:28,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28" (1/1) ... [2024-11-18 23:49:28,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28" (1/1) ... [2024-11-18 23:49:28,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28" (1/1) ... [2024-11-18 23:49:28,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28" (1/1) ... [2024-11-18 23:49:28,619 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28" (1/1) ... [2024-11-18 23:49:28,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28" (1/1) ... [2024-11-18 23:49:28,643 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:49:28,644 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:49:28,645 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:49:28,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:49:28,646 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28" (1/1) ... [2024-11-18 23:49:28,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:49:28,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:28,680 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 23:49:28,683 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 23:49:28,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:49:28,721 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:49:28,721 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:49:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:49:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:49:28,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:49:28,814 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:49:28,816 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:49:29,705 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-18 23:49:29,706 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:49:29,725 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:49:29,725 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:49:29,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:49:29 BoogieIcfgContainer [2024-11-18 23:49:29,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:49:29,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:49:29,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:49:29,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:49:29,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:49:27" (1/3) ... [2024-11-18 23:49:29,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fa8e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:49:29, skipping insertion in model container [2024-11-18 23:49:29,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:49:28" (2/3) ... [2024-11-18 23:49:29,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fa8e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:49:29, skipping insertion in model container [2024-11-18 23:49:29,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:49:29" (3/3) ... [2024-11-18 23:49:29,739 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-97.i [2024-11-18 23:49:29,754 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:49:29,755 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:49:29,829 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:49:29,837 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;@23404a03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:49:29,838 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:49:29,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 143 states have (on average 1.5244755244755244) internal successors, (218), 144 states have internal predecessors, (218), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 23:49:29,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-18 23:49:29,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:29,863 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:29,863 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:29,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:29,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1649428131, now seen corresponding path program 1 times [2024-11-18 23:49:29,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:29,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949323317] [2024-11-18 23:49:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:29,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:30,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2024-11-18 23:49:30,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:30,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949323317] [2024-11-18 23:49:30,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949323317] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:49:30,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782586399] [2024-11-18 23:49:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:30,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:30,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:30,438 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 23:49:30,439 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 23:49:30,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:30,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:49:30,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:49:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2024-11-18 23:49:30,757 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:49:30,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782586399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:30,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:49:30,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:49:30,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122605846] [2024-11-18 23:49:30,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:30,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:49:30,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:30,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:49:30,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:49:30,792 INFO L87 Difference]: Start difference. First operand has 189 states, 143 states have (on average 1.5244755244755244) internal successors, (218), 144 states have internal predecessors, (218), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-18 23:49:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:30,834 INFO L93 Difference]: Finished difference Result 371 states and 645 transitions. [2024-11-18 23:49:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:49:30,838 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) Word has length 289 [2024-11-18 23:49:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:30,847 INFO L225 Difference]: With dead ends: 371 [2024-11-18 23:49:30,848 INFO L226 Difference]: Without dead ends: 185 [2024-11-18 23:49:30,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 290 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 23:49:30,859 INFO L432 NwaCegarLoop]: 297 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, 297 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 23:49:30,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:49:30,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-18 23:49:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-18 23:49:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 140 states have (on average 1.5071428571428571) internal successors, (211), 140 states have internal predecessors, (211), 43 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-18 23:49:30,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 297 transitions. [2024-11-18 23:49:30,916 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 297 transitions. Word has length 289 [2024-11-18 23:49:30,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:30,917 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 297 transitions. [2024-11-18 23:49:30,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 2 states have call successors, (43) [2024-11-18 23:49:30,917 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 297 transitions. [2024-11-18 23:49:30,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-18 23:49:30,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:30,927 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:30,945 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 23:49:31,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 23:49:31,128 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:31,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:31,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1437054495, now seen corresponding path program 1 times [2024-11-18 23:49:31,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:31,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354427811] [2024-11-18 23:49:31,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:31,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 23:49:31,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:31,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354427811] [2024-11-18 23:49:31,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354427811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:31,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:31,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:49:31,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536694594] [2024-11-18 23:49:31,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:31,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:49:31,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:31,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:49:31,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:49:31,976 INFO L87 Difference]: Start difference. First operand 185 states and 297 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:32,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:32,316 INFO L93 Difference]: Finished difference Result 552 states and 889 transitions. [2024-11-18 23:49:32,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 23:49:32,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 289 [2024-11-18 23:49:32,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:32,326 INFO L225 Difference]: With dead ends: 552 [2024-11-18 23:49:32,326 INFO L226 Difference]: Without dead ends: 370 [2024-11-18 23:49:32,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-18 23:49:32,333 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 308 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:32,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1441 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:49:32,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-18 23:49:32,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 285. [2024-11-18 23:49:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 196 states have (on average 1.4744897959183674) internal successors, (289), 196 states have internal predecessors, (289), 86 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 23:49:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 461 transitions. [2024-11-18 23:49:32,400 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 461 transitions. Word has length 289 [2024-11-18 23:49:32,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:32,402 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 461 transitions. [2024-11-18 23:49:32,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:32,404 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 461 transitions. [2024-11-18 23:49:32,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-18 23:49:32,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:32,411 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:32,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:49:32,412 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:32,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:32,413 INFO L85 PathProgramCache]: Analyzing trace with hash 909538279, now seen corresponding path program 1 times [2024-11-18 23:49:32,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:32,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835525204] [2024-11-18 23:49:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:32,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 23:49:32,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:32,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835525204] [2024-11-18 23:49:32,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835525204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:32,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:32,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:49:32,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557520588] [2024-11-18 23:49:32,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:32,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:49:32,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:32,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:49:32,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:49:32,947 INFO L87 Difference]: Start difference. First operand 285 states and 461 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:32,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:32,975 INFO L93 Difference]: Finished difference Result 467 states and 755 transitions. [2024-11-18 23:49:32,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:49:32,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 290 [2024-11-18 23:49:32,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:32,980 INFO L225 Difference]: With dead ends: 467 [2024-11-18 23:49:32,980 INFO L226 Difference]: Without dead ends: 285 [2024-11-18 23:49:32,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 23:49:32,982 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 210 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:32,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 292 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:49:32,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-18 23:49:33,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-11-18 23:49:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 196 states have (on average 1.469387755102041) internal successors, (288), 196 states have internal predecessors, (288), 86 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 23:49:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 460 transitions. [2024-11-18 23:49:33,008 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 460 transitions. Word has length 290 [2024-11-18 23:49:33,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:33,009 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 460 transitions. [2024-11-18 23:49:33,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:33,010 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 460 transitions. [2024-11-18 23:49:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-18 23:49:33,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:33,013 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:33,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:49:33,014 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:33,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:33,015 INFO L85 PathProgramCache]: Analyzing trace with hash 837151721, now seen corresponding path program 1 times [2024-11-18 23:49:33,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:33,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368974273] [2024-11-18 23:49:33,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:33,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:35,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 23:49:35,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:35,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368974273] [2024-11-18 23:49:35,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368974273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:35,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:35,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 23:49:35,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803759858] [2024-11-18 23:49:35,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:35,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 23:49:35,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 23:49:35,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:49:35,158 INFO L87 Difference]: Start difference. First operand 285 states and 460 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:36,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:36,365 INFO L93 Difference]: Finished difference Result 776 states and 1237 transitions. [2024-11-18 23:49:36,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 23:49:36,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 290 [2024-11-18 23:49:36,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:36,371 INFO L225 Difference]: With dead ends: 776 [2024-11-18 23:49:36,371 INFO L226 Difference]: Without dead ends: 594 [2024-11-18 23:49:36,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:49:36,375 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 823 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:36,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1579 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 23:49:36,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-11-18 23:49:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 315. [2024-11-18 23:49:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 226 states have (on average 1.491150442477876) internal successors, (337), 226 states have internal predecessors, (337), 86 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-18 23:49:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 509 transitions. [2024-11-18 23:49:36,426 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 509 transitions. Word has length 290 [2024-11-18 23:49:36,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:36,429 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 509 transitions. [2024-11-18 23:49:36,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:36,429 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 509 transitions. [2024-11-18 23:49:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-18 23:49:36,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:36,434 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:36,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:49:36,435 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:36,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:36,437 INFO L85 PathProgramCache]: Analyzing trace with hash 896542135, now seen corresponding path program 1 times [2024-11-18 23:49:36,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:36,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097339951] [2024-11-18 23:49:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:36,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 23:49:36,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:36,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097339951] [2024-11-18 23:49:36,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097339951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:36,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:36,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:49:36,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088731883] [2024-11-18 23:49:36,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:36,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:49:36,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:36,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:49:36,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:49:36,813 INFO L87 Difference]: Start difference. First operand 315 states and 509 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:36,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:36,879 INFO L93 Difference]: Finished difference Result 700 states and 1126 transitions. [2024-11-18 23:49:36,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:49:36,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 290 [2024-11-18 23:49:36,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:36,883 INFO L225 Difference]: With dead ends: 700 [2024-11-18 23:49:36,884 INFO L226 Difference]: Without dead ends: 518 [2024-11-18 23:49:36,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 23:49:36,885 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 201 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:36,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 856 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:49:36,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-18 23:49:36,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 515. [2024-11-18 23:49:36,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 382 states have (on average 1.4921465968586387) internal successors, (570), 382 states have internal predecessors, (570), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 23:49:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 828 transitions. [2024-11-18 23:49:36,950 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 828 transitions. Word has length 290 [2024-11-18 23:49:36,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:36,951 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 828 transitions. [2024-11-18 23:49:36,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:36,952 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 828 transitions. [2024-11-18 23:49:36,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-18 23:49:36,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:36,957 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:36,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:49:36,957 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:36,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:36,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1739325888, now seen corresponding path program 1 times [2024-11-18 23:49:36,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:36,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044176961] [2024-11-18 23:49:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:36,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 23:49:38,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:38,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044176961] [2024-11-18 23:49:38,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044176961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:38,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:38,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 23:49:38,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834461446] [2024-11-18 23:49:38,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:38,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 23:49:38,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:38,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 23:49:38,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:49:38,375 INFO L87 Difference]: Start difference. First operand 515 states and 828 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:39,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:39,314 INFO L93 Difference]: Finished difference Result 1438 states and 2293 transitions. [2024-11-18 23:49:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:49:39,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 290 [2024-11-18 23:49:39,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:39,321 INFO L225 Difference]: With dead ends: 1438 [2024-11-18 23:49:39,321 INFO L226 Difference]: Without dead ends: 1078 [2024-11-18 23:49:39,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:49:39,323 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 814 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:39,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 2005 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 23:49:39,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2024-11-18 23:49:39,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 523. [2024-11-18 23:49:39,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 390 states have (on average 1.4923076923076923) internal successors, (582), 390 states have internal predecessors, (582), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 23:49:39,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 840 transitions. [2024-11-18 23:49:39,379 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 840 transitions. Word has length 290 [2024-11-18 23:49:39,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:39,380 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 840 transitions. [2024-11-18 23:49:39,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:39,380 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 840 transitions. [2024-11-18 23:49:39,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-18 23:49:39,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:39,384 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:39,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:49:39,384 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:39,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:39,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2105844949, now seen corresponding path program 1 times [2024-11-18 23:49:39,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:39,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616288807] [2024-11-18 23:49:39,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:39,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 23:49:39,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:39,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616288807] [2024-11-18 23:49:39,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616288807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:39,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:39,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 23:49:39,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468703778] [2024-11-18 23:49:39,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:39,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 23:49:39,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:39,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 23:49:39,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 23:49:39,821 INFO L87 Difference]: Start difference. First operand 523 states and 840 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:40,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:40,029 INFO L93 Difference]: Finished difference Result 922 states and 1478 transitions. [2024-11-18 23:49:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:49:40,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 291 [2024-11-18 23:49:40,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:40,036 INFO L225 Difference]: With dead ends: 922 [2024-11-18 23:49:40,036 INFO L226 Difference]: Without dead ends: 517 [2024-11-18 23:49:40,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 23:49:40,039 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 376 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:40,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 276 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:49:40,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-18 23:49:40,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 509. [2024-11-18 23:49:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 376 states have (on average 1.4574468085106382) internal successors, (548), 376 states have internal predecessors, (548), 129 states have call successors, (129), 3 states have call predecessors, (129), 3 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 23:49:40,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 806 transitions. [2024-11-18 23:49:40,100 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 806 transitions. Word has length 291 [2024-11-18 23:49:40,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:40,102 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 806 transitions. [2024-11-18 23:49:40,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:40,103 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 806 transitions. [2024-11-18 23:49:40,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-18 23:49:40,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:40,108 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:40,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:49:40,108 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:40,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:40,109 INFO L85 PathProgramCache]: Analyzing trace with hash 725976113, now seen corresponding path program 1 times [2024-11-18 23:49:40,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:40,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928355027] [2024-11-18 23:49:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:40,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:41,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-18 23:49:41,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:41,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928355027] [2024-11-18 23:49:41,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928355027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:49:41,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187466717] [2024-11-18 23:49:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:41,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:41,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:41,101 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 23:49:41,102 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 23:49:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:41,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 23:49:41,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:49:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1342 proven. 96 refuted. 0 times theorem prover too weak. 2174 trivial. 0 not checked. [2024-11-18 23:49:41,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:49:42,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 30 proven. 96 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-18 23:49:42,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187466717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:49:42,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:49:42,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2024-11-18 23:49:42,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308252657] [2024-11-18 23:49:42,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:49:42,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 23:49:42,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:42,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 23:49:42,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-18 23:49:42,253 INFO L87 Difference]: Start difference. First operand 509 states and 806 transitions. Second operand has 11 states, 11 states have (on average 17.09090909090909) internal successors, (188), 11 states have internal predecessors, (188), 5 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 4 states have call predecessors, (119), 5 states have call successors, (119) [2024-11-18 23:49:43,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:43,231 INFO L93 Difference]: Finished difference Result 1066 states and 1665 transitions. [2024-11-18 23:49:43,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 23:49:43,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.09090909090909) internal successors, (188), 11 states have internal predecessors, (188), 5 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 4 states have call predecessors, (119), 5 states have call successors, (119) Word has length 291 [2024-11-18 23:49:43,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:43,236 INFO L225 Difference]: With dead ends: 1066 [2024-11-18 23:49:43,236 INFO L226 Difference]: Without dead ends: 642 [2024-11-18 23:49:43,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2024-11-18 23:49:43,239 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 788 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:43,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 1184 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:49:43,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2024-11-18 23:49:43,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 469. [2024-11-18 23:49:43,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 332 states have (on average 1.4156626506024097) internal successors, (470), 332 states have internal predecessors, (470), 129 states have call successors, (129), 7 states have call predecessors, (129), 7 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 23:49:43,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 728 transitions. [2024-11-18 23:49:43,289 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 728 transitions. Word has length 291 [2024-11-18 23:49:43,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:43,290 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 728 transitions. [2024-11-18 23:49:43,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.09090909090909) internal successors, (188), 11 states have internal predecessors, (188), 5 states have call successors, (118), 2 states have call predecessors, (118), 4 states have return successors, (119), 4 states have call predecessors, (119), 5 states have call successors, (119) [2024-11-18 23:49:43,292 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 728 transitions. [2024-11-18 23:49:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2024-11-18 23:49:43,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:43,297 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:43,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 23:49:43,501 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,SelfDestructingSolverStorable7 [2024-11-18 23:49:43,503 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:43,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1968400452, now seen corresponding path program 1 times [2024-11-18 23:49:43,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:43,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101438370] [2024-11-18 23:49:43,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:43,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 66 proven. 60 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-18 23:49:44,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:44,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101438370] [2024-11-18 23:49:44,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101438370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:49:44,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940277417] [2024-11-18 23:49:44,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:44,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:44,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:44,148 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 23:49:44,150 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 23:49:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:44,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 23:49:44,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:49:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 1846 proven. 60 refuted. 0 times theorem prover too weak. 1706 trivial. 0 not checked. [2024-11-18 23:49:44,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:49:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 66 proven. 60 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-18 23:49:44,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940277417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:49:44,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:49:44,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-18 23:49:44,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985670489] [2024-11-18 23:49:44,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:49:44,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 23:49:44,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:44,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 23:49:44,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:49:44,831 INFO L87 Difference]: Start difference. First operand 469 states and 728 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2024-11-18 23:49:45,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:45,129 INFO L93 Difference]: Finished difference Result 856 states and 1316 transitions. [2024-11-18 23:49:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:49:45,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 291 [2024-11-18 23:49:45,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:45,133 INFO L225 Difference]: With dead ends: 856 [2024-11-18 23:49:45,134 INFO L226 Difference]: Without dead ends: 475 [2024-11-18 23:49:45,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 579 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:49:45,137 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 199 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:45,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 590 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:49:45,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-18 23:49:45,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 469. [2024-11-18 23:49:45,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 329 states have (on average 1.3708206686930091) internal successors, (451), 329 states have internal predecessors, (451), 129 states have call successors, (129), 10 states have call predecessors, (129), 10 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 23:49:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 709 transitions. [2024-11-18 23:49:45,219 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 709 transitions. Word has length 291 [2024-11-18 23:49:45,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:45,219 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 709 transitions. [2024-11-18 23:49:45,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (63), 2 states have call predecessors, (63), 4 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2024-11-18 23:49:45,220 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 709 transitions. [2024-11-18 23:49:45,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-18 23:49:45,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:45,225 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:45,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 23:49:45,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:45,426 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:45,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:45,427 INFO L85 PathProgramCache]: Analyzing trace with hash 617984224, now seen corresponding path program 1 times [2024-11-18 23:49:45,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:45,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114690463] [2024-11-18 23:49:45,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:45,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-11-18 23:49:45,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:45,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114690463] [2024-11-18 23:49:45,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114690463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:49:45,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:49:45,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:49:45,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303669742] [2024-11-18 23:49:45,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:49:45,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:49:45,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:45,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:49:45,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:49:45,773 INFO L87 Difference]: Start difference. First operand 469 states and 709 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:45,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:45,829 INFO L93 Difference]: Finished difference Result 849 states and 1290 transitions. [2024-11-18 23:49:45,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:49:45,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) Word has length 292 [2024-11-18 23:49:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:45,834 INFO L225 Difference]: With dead ends: 849 [2024-11-18 23:49:45,834 INFO L226 Difference]: Without dead ends: 472 [2024-11-18 23:49:45,837 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 23:49:45,839 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 0 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:45,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 548 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:49:45,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-11-18 23:49:45,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2024-11-18 23:49:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 332 states have (on average 1.3674698795180722) internal successors, (454), 332 states have internal predecessors, (454), 129 states have call successors, (129), 10 states have call predecessors, (129), 10 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2024-11-18 23:49:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 712 transitions. [2024-11-18 23:49:45,888 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 712 transitions. Word has length 292 [2024-11-18 23:49:45,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:45,888 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 712 transitions. [2024-11-18 23:49:45,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 1 states have call successors, (43), 1 states have call predecessors, (43), 1 states have return successors, (43), 1 states have call predecessors, (43), 1 states have call successors, (43) [2024-11-18 23:49:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 712 transitions. [2024-11-18 23:49:45,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-11-18 23:49:45,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:45,892 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:45,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 23:49:45,893 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:45,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:45,894 INFO L85 PathProgramCache]: Analyzing trace with hash 264895842, now seen corresponding path program 1 times [2024-11-18 23:49:45,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:45,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493411868] [2024-11-18 23:49:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:45,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 33 proven. 93 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2024-11-18 23:49:46,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:46,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493411868] [2024-11-18 23:49:46,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493411868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:49:46,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474844508] [2024-11-18 23:49:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:46,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:46,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:46,988 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 23:49:46,989 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 23:49:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:47,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 23:49:47,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:49:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 548 proven. 237 refuted. 0 times theorem prover too weak. 2827 trivial. 0 not checked. [2024-11-18 23:49:48,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:49:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 9 proven. 240 refuted. 0 times theorem prover too weak. 3363 trivial. 0 not checked. [2024-11-18 23:49:48,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474844508] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:49:48,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:49:48,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-18 23:49:48,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764238735] [2024-11-18 23:49:48,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:49:48,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 23:49:48,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:48,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 23:49:48,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-18 23:49:48,961 INFO L87 Difference]: Start difference. First operand 472 states and 712 transitions. Second operand has 18 states, 18 states have (on average 10.0) internal successors, (180), 18 states have internal predecessors, (180), 7 states have call successors, (128), 3 states have call predecessors, (128), 7 states have return successors, (129), 6 states have call predecessors, (129), 7 states have call successors, (129) [2024-11-18 23:49:50,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:49:50,395 INFO L93 Difference]: Finished difference Result 1285 states and 1895 transitions. [2024-11-18 23:49:50,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-18 23:49:50,396 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.0) internal successors, (180), 18 states have internal predecessors, (180), 7 states have call successors, (128), 3 states have call predecessors, (128), 7 states have return successors, (129), 6 states have call predecessors, (129), 7 states have call successors, (129) Word has length 292 [2024-11-18 23:49:50,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:49:50,403 INFO L225 Difference]: With dead ends: 1285 [2024-11-18 23:49:50,403 INFO L226 Difference]: Without dead ends: 905 [2024-11-18 23:49:50,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=460, Invalid=1262, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 23:49:50,406 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 729 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 23:49:50,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1471 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 23:49:50,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2024-11-18 23:49:50,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 879. [2024-11-18 23:49:50,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 632 states have (on average 1.3306962025316456) internal successors, (841), 632 states have internal predecessors, (841), 215 states have call successors, (215), 31 states have call predecessors, (215), 31 states have return successors, (215), 215 states have call predecessors, (215), 215 states have call successors, (215) [2024-11-18 23:49:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1271 transitions. [2024-11-18 23:49:50,499 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1271 transitions. Word has length 292 [2024-11-18 23:49:50,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:49:50,500 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1271 transitions. [2024-11-18 23:49:50,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.0) internal successors, (180), 18 states have internal predecessors, (180), 7 states have call successors, (128), 3 states have call predecessors, (128), 7 states have return successors, (129), 6 states have call predecessors, (129), 7 states have call successors, (129) [2024-11-18 23:49:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1271 transitions. [2024-11-18 23:49:50,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-18 23:49:50,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:49:50,505 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:50,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 23:49:50,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:50,710 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:49:50,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:49:50,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1974811117, now seen corresponding path program 1 times [2024-11-18 23:49:50,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:49:50,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724420786] [2024-11-18 23:49:50,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:50,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:49:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 120 proven. 240 refuted. 0 times theorem prover too weak. 3252 trivial. 0 not checked. [2024-11-18 23:49:52,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:49:52,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724420786] [2024-11-18 23:49:52,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724420786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:49:52,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444946505] [2024-11-18 23:49:52,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:49:52,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:49:52,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:49:52,754 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:49:52,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 23:49:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:49:52,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 23:49:52,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:49:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2285 proven. 87 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2024-11-18 23:49:54,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:49:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 273 proven. 96 refuted. 0 times theorem prover too weak. 3243 trivial. 0 not checked. [2024-11-18 23:49:55,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444946505] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:49:55,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:49:55,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 38 [2024-11-18 23:49:55,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391595334] [2024-11-18 23:49:55,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:49:55,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-18 23:49:55,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:49:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-18 23:49:55,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1208, Unknown=0, NotChecked=0, Total=1406 [2024-11-18 23:49:55,221 INFO L87 Difference]: Start difference. First operand 879 states and 1271 transitions. Second operand has 38 states, 36 states have (on average 6.111111111111111) internal successors, (220), 38 states have internal predecessors, (220), 14 states have call successors, (129), 5 states have call predecessors, (129), 12 states have return successors, (129), 12 states have call predecessors, (129), 14 states have call successors, (129) [2024-11-18 23:50:08,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:50:08,233 INFO L93 Difference]: Finished difference Result 7693 states and 10916 transitions. [2024-11-18 23:50:08,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2024-11-18 23:50:08,233 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 6.111111111111111) internal successors, (220), 38 states have internal predecessors, (220), 14 states have call successors, (129), 5 states have call predecessors, (129), 12 states have return successors, (129), 12 states have call predecessors, (129), 14 states have call successors, (129) Word has length 293 [2024-11-18 23:50:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:50:08,270 INFO L225 Difference]: With dead ends: 7693 [2024-11-18 23:50:08,270 INFO L226 Difference]: Without dead ends: 6935 [2024-11-18 23:50:08,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15726 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=5715, Invalid=33291, Unknown=0, NotChecked=0, Total=39006 [2024-11-18 23:50:08,286 INFO L432 NwaCegarLoop]: 618 mSDtfsCounter, 9789 mSDsluCounter, 6698 mSDsCounter, 0 mSdLazyCounter, 6951 mSolverCounterSat, 2502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9831 SdHoareTripleChecker+Valid, 7316 SdHoareTripleChecker+Invalid, 9453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2502 IncrementalHoareTripleChecker+Valid, 6951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:50:08,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9831 Valid, 7316 Invalid, 9453 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2502 Valid, 6951 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-18 23:50:08,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6935 states. [2024-11-18 23:50:08,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6935 to 4340. [2024-11-18 23:50:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4340 states, 3378 states have (on average 1.3368857312018947) internal successors, (4516), 3390 states have internal predecessors, (4516), 759 states have call successors, (759), 202 states have call predecessors, (759), 202 states have return successors, (759), 747 states have call predecessors, (759), 759 states have call successors, (759) [2024-11-18 23:50:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4340 states to 4340 states and 6034 transitions. [2024-11-18 23:50:08,902 INFO L78 Accepts]: Start accepts. Automaton has 4340 states and 6034 transitions. Word has length 293 [2024-11-18 23:50:08,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:50:08,903 INFO L471 AbstractCegarLoop]: Abstraction has 4340 states and 6034 transitions. [2024-11-18 23:50:08,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 6.111111111111111) internal successors, (220), 38 states have internal predecessors, (220), 14 states have call successors, (129), 5 states have call predecessors, (129), 12 states have return successors, (129), 12 states have call predecessors, (129), 14 states have call successors, (129) [2024-11-18 23:50:08,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4340 states and 6034 transitions. [2024-11-18 23:50:08,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-18 23:50:08,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:50:08,907 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:50:08,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 23:50:09,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 23:50:09,108 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:50:09,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:50:09,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1680531983, now seen corresponding path program 1 times [2024-11-18 23:50:09,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:50:09,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021461089] [2024-11-18 23:50:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:09,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:50:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 114 proven. 246 refuted. 0 times theorem prover too weak. 3252 trivial. 0 not checked. [2024-11-18 23:50:11,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:50:11,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021461089] [2024-11-18 23:50:11,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021461089] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:50:11,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178623949] [2024-11-18 23:50:11,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:50:11,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:50:11,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:50:11,436 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 23:50:11,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 23:50:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:50:11,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-18 23:50:11,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:50:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 2429 proven. 505 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2024-11-18 23:50:14,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 23:50:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3612 backedges. 321 proven. 498 refuted. 0 times theorem prover too weak. 2793 trivial. 0 not checked. [2024-11-18 23:50:17,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178623949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 23:50:17,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 23:50:17,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 32, 26] total 62 [2024-11-18 23:50:17,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849266974] [2024-11-18 23:50:17,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 23:50:17,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-18 23:50:17,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:50:17,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-18 23:50:17,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=2688, Unknown=0, NotChecked=0, Total=3782 [2024-11-18 23:50:17,154 INFO L87 Difference]: Start difference. First operand 4340 states and 6034 transitions. Second operand has 62 states, 58 states have (on average 4.344827586206897) internal successors, (252), 54 states have internal predecessors, (252), 18 states have call successors, (111), 9 states have call predecessors, (111), 21 states have return successors, (112), 18 states have call predecessors, (112), 18 states have call successors, (112) [2024-11-18 23:50:33,903 WARN L286 SmtUtils]: Spent 16.17s on a formula simplification. DAG size of input: 43 DAG size of output: 42 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)