./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f3efee8c660a339e6d13fe6728631748153baced66b17ec0d4ea728c6f50decb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:33:18,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:33:18,569 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:33:18,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:33:18,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:33:18,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:33:18,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:33:18,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:33:18,591 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:33:18,591 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:33:18,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:33:18,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:33:18,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:33:18,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:33:18,594 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:33:18,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:33:18,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:33:18,594 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:33:18,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:33:18,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:33:18,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:33:18,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:33:18,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:33:18,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:33:18,598 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:33:18,598 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:33:18,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:33:18,599 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:33:18,599 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:33:18,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:33:18,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:33:18,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:33:18,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:33:18,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:33:18,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:33:18,600 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:33:18,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:33:18,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:33:18,600 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:33:18,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:33:18,600 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:33:18,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:33:18,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3efee8c660a339e6d13fe6728631748153baced66b17ec0d4ea728c6f50decb [2024-11-16 09:33:18,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:33:18,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:33:18,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:33:18,817 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:33:18,818 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:33:18,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2024-11-16 09:33:20,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:33:20,407 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:33:20,408 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2024-11-16 09:33:20,437 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa5df3196/d45f6228c121469c85eb8e89fe3c1f00/FLAG26d3e76b4 [2024-11-16 09:33:20,450 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa5df3196/d45f6228c121469c85eb8e89fe3c1f00 [2024-11-16 09:33:20,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:33:20,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:33:20,455 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:33:20,456 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:33:20,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:33:20,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:33:20" (1/1) ... [2024-11-16 09:33:20,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323383d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:20, skipping insertion in model container [2024-11-16 09:33:20,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:33:20" (1/1) ... [2024-11-16 09:33:20,518 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:33:20,763 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c[6487,6500] [2024-11-16 09:33:20,815 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c[14235,14248] [2024-11-16 09:33:21,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:33:21,291 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:33:21,316 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c[6487,6500] [2024-11-16 09:33:21,332 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c[14235,14248] [2024-11-16 09:33:21,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:33:21,652 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:33:21,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21 WrapperNode [2024-11-16 09:33:21,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:33:21,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:33:21,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:33:21,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:33:21,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21" (1/1) ... [2024-11-16 09:33:21,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21" (1/1) ... [2024-11-16 09:33:21,906 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4982 [2024-11-16 09:33:21,906 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:33:21,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:33:21,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:33:21,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:33:21,915 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21" (1/1) ... [2024-11-16 09:33:21,915 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21" (1/1) ... [2024-11-16 09:33:21,953 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21" (1/1) ... [2024-11-16 09:33:22,151 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 09:33:22,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21" (1/1) ... [2024-11-16 09:33:22,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21" (1/1) ... [2024-11-16 09:33:22,250 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21" (1/1) ... [2024-11-16 09:33:22,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21" (1/1) ... [2024-11-16 09:33:22,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21" (1/1) ... [2024-11-16 09:33:22,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21" (1/1) ... [2024-11-16 09:33:22,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:33:22,344 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:33:22,345 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:33:22,345 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:33:22,345 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21" (1/1) ... [2024-11-16 09:33:22,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:33:22,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:22,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 09:33:22,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 09:33:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:33:22,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:33:22,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:33:22,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:33:22,553 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:33:22,555 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:33:25,578 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1989: havoc calculate_output_#t~ret29#1; [2024-11-16 09:33:25,579 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3468: havoc calculate_output2_#t~ret30#1; [2024-11-16 09:33:25,579 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4958: havoc calculate_output3_#t~ret31#1; [2024-11-16 09:33:25,667 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-16 09:33:25,667 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:33:25,696 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:33:25,696 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:33:25,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:33:25 BoogieIcfgContainer [2024-11-16 09:33:25,697 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:33:25,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:33:25,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:33:25,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:33:25,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:33:20" (1/3) ... [2024-11-16 09:33:25,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5685e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:33:25, skipping insertion in model container [2024-11-16 09:33:25,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:33:21" (2/3) ... [2024-11-16 09:33:25,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5685e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:33:25, skipping insertion in model container [2024-11-16 09:33:25,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:33:25" (3/3) ... [2024-11-16 09:33:25,706 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2024-11-16 09:33:25,718 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:33:25,718 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:33:25,782 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:33:25,789 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;@2a6821ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:33:25,789 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:33:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 881 states, 878 states have (on average 1.898633257403189) internal successors, (1667), 880 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:25,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 09:33:25,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:25,805 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:25,805 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:25,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:25,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1430645132, now seen corresponding path program 1 times [2024-11-16 09:33:25,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:25,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104127924] [2024-11-16 09:33:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:25,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:25,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:25,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104127924] [2024-11-16 09:33:25,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104127924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:25,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:25,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:33:25,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739054349] [2024-11-16 09:33:25,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:25,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 09:33:25,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:25,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 09:33:25,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:33:26,002 INFO L87 Difference]: Start difference. First operand has 881 states, 878 states have (on average 1.898633257403189) internal successors, (1667), 880 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:26,070 INFO L93 Difference]: Finished difference Result 1736 states and 3290 transitions. [2024-11-16 09:33:26,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 09:33:26,072 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 09:33:26,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:26,090 INFO L225 Difference]: With dead ends: 1736 [2024-11-16 09:33:26,091 INFO L226 Difference]: Without dead ends: 813 [2024-11-16 09:33:26,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:33:26,096 INFO L432 NwaCegarLoop]: 1596 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, 1596 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 [2024-11-16 09:33:26,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-16 09:33:26,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2024-11-16 09:33:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 811 states have (on average 1.8890258939580764) internal successors, (1532), 812 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1532 transitions. [2024-11-16 09:33:26,163 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1532 transitions. Word has length 22 [2024-11-16 09:33:26,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:26,164 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1532 transitions. [2024-11-16 09:33:26,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,164 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1532 transitions. [2024-11-16 09:33:26,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 09:33:26,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:26,165 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:26,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:33:26,165 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:26,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash 920110955, now seen corresponding path program 1 times [2024-11-16 09:33:26,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:26,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895188014] [2024-11-16 09:33:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:26,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:26,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:26,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895188014] [2024-11-16 09:33:26,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895188014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:26,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:26,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:26,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943722734] [2024-11-16 09:33:26,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:26,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:26,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:26,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:26,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:26,332 INFO L87 Difference]: Start difference. First operand 813 states and 1532 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:26,408 INFO L93 Difference]: Finished difference Result 852 states and 1589 transitions. [2024-11-16 09:33:26,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:26,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 09:33:26,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:26,412 INFO L225 Difference]: With dead ends: 852 [2024-11-16 09:33:26,412 INFO L226 Difference]: Without dead ends: 813 [2024-11-16 09:33:26,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:26,413 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 0 mSDsluCounter, 4569 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6099 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:26,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6099 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-16 09:33:26,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2024-11-16 09:33:26,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 811 states have (on average 1.8692971639950677) internal successors, (1516), 812 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1516 transitions. [2024-11-16 09:33:26,432 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1516 transitions. Word has length 22 [2024-11-16 09:33:26,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:26,432 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1516 transitions. [2024-11-16 09:33:26,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,433 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1516 transitions. [2024-11-16 09:33:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 09:33:26,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:26,435 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:26,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:33:26,435 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:26,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:26,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1481333562, now seen corresponding path program 1 times [2024-11-16 09:33:26,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:26,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439015607] [2024-11-16 09:33:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:26,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:26,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:26,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439015607] [2024-11-16 09:33:26,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439015607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:26,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:26,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:26,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455553172] [2024-11-16 09:33:26,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:26,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:26,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:26,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:26,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:26,546 INFO L87 Difference]: Start difference. First operand 813 states and 1516 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:26,641 INFO L93 Difference]: Finished difference Result 1023 states and 1834 transitions. [2024-11-16 09:33:26,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:33:26,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-16 09:33:26,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:26,646 INFO L225 Difference]: With dead ends: 1023 [2024-11-16 09:33:26,646 INFO L226 Difference]: Without dead ends: 988 [2024-11-16 09:33:26,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:26,647 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 4668 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:26,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4668 Valid, 1812 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2024-11-16 09:33:26,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 845. [2024-11-16 09:33:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.856465005931198) internal successors, (1565), 844 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1565 transitions. [2024-11-16 09:33:26,673 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1565 transitions. Word has length 37 [2024-11-16 09:33:26,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:26,673 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1565 transitions. [2024-11-16 09:33:26,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,674 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1565 transitions. [2024-11-16 09:33:26,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 09:33:26,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:26,675 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:26,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:33:26,675 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:26,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:26,676 INFO L85 PathProgramCache]: Analyzing trace with hash 361982440, now seen corresponding path program 1 times [2024-11-16 09:33:26,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:26,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785077323] [2024-11-16 09:33:26,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:26,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:26,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:26,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785077323] [2024-11-16 09:33:26,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785077323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:26,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:26,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:26,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113548639] [2024-11-16 09:33:26,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:26,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:26,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:26,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:26,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:26,823 INFO L87 Difference]: Start difference. First operand 845 states and 1565 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:26,893 INFO L93 Difference]: Finished difference Result 915 states and 1669 transitions. [2024-11-16 09:33:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:26,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-16 09:33:26,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:26,896 INFO L225 Difference]: With dead ends: 915 [2024-11-16 09:33:26,896 INFO L226 Difference]: Without dead ends: 848 [2024-11-16 09:33:26,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:33:26,898 INFO L432 NwaCegarLoop]: 1511 mSDtfsCounter, 4438 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4438 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:26,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4438 Valid, 1609 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:26,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2024-11-16 09:33:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 845. [2024-11-16 09:33:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.8552787663107948) internal successors, (1564), 844 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1564 transitions. [2024-11-16 09:33:26,917 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1564 transitions. Word has length 39 [2024-11-16 09:33:26,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:26,917 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1564 transitions. [2024-11-16 09:33:26,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1564 transitions. [2024-11-16 09:33:26,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 09:33:26,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:26,919 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:26,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:33:26,919 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:26,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:26,919 INFO L85 PathProgramCache]: Analyzing trace with hash 60372957, now seen corresponding path program 1 times [2024-11-16 09:33:26,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:26,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394852442] [2024-11-16 09:33:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:26,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:26,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:26,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394852442] [2024-11-16 09:33:26,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394852442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:26,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:26,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:26,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348962806] [2024-11-16 09:33:26,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:26,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:26,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:26,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:26,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:26,985 INFO L87 Difference]: Start difference. First operand 845 states and 1564 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:27,014 INFO L93 Difference]: Finished difference Result 967 states and 1746 transitions. [2024-11-16 09:33:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:27,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-16 09:33:27,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:27,018 INFO L225 Difference]: With dead ends: 967 [2024-11-16 09:33:27,018 INFO L226 Difference]: Without dead ends: 900 [2024-11-16 09:33:27,018 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 [2024-11-16 09:33:27,019 INFO L432 NwaCegarLoop]: 1512 mSDtfsCounter, 1472 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:27,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1558 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:27,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2024-11-16 09:33:27,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 895. [2024-11-16 09:33:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 893 states have (on average 1.832026875699888) internal successors, (1636), 894 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1636 transitions. [2024-11-16 09:33:27,036 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1636 transitions. Word has length 40 [2024-11-16 09:33:27,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:27,036 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1636 transitions. [2024-11-16 09:33:27,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,036 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1636 transitions. [2024-11-16 09:33:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:27,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:27,037 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:27,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:33:27,038 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:27,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1296615530, now seen corresponding path program 1 times [2024-11-16 09:33:27,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:27,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956641939] [2024-11-16 09:33:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:27,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:27,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:27,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956641939] [2024-11-16 09:33:27,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956641939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:27,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:27,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:27,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868852296] [2024-11-16 09:33:27,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:27,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:27,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:27,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:27,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:27,085 INFO L87 Difference]: Start difference. First operand 895 states and 1636 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:27,110 INFO L93 Difference]: Finished difference Result 1113 states and 1954 transitions. [2024-11-16 09:33:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 09:33:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:27,114 INFO L225 Difference]: With dead ends: 1113 [2024-11-16 09:33:27,114 INFO L226 Difference]: Without dead ends: 996 [2024-11-16 09:33:27,114 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 [2024-11-16 09:33:27,116 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 1481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:27,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1603 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:27,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2024-11-16 09:33:27,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 993. [2024-11-16 09:33:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 991 states have (on average 1.7911200807265388) internal successors, (1775), 992 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1775 transitions. [2024-11-16 09:33:27,134 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1775 transitions. Word has length 41 [2024-11-16 09:33:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:27,135 INFO L471 AbstractCegarLoop]: Abstraction has 993 states and 1775 transitions. [2024-11-16 09:33:27,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,135 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1775 transitions. [2024-11-16 09:33:27,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:27,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:27,137 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:27,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:33:27,137 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:27,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:27,138 INFO L85 PathProgramCache]: Analyzing trace with hash -906749014, now seen corresponding path program 1 times [2024-11-16 09:33:27,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:27,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296175880] [2024-11-16 09:33:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:27,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:27,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:27,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:27,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296175880] [2024-11-16 09:33:27,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296175880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:27,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:27,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:27,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956008632] [2024-11-16 09:33:27,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:27,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:27,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:27,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:27,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:27,179 INFO L87 Difference]: Start difference. First operand 993 states and 1775 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:27,201 INFO L93 Difference]: Finished difference Result 1391 states and 2343 transitions. [2024-11-16 09:33:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:27,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 09:33:27,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:27,205 INFO L225 Difference]: With dead ends: 1391 [2024-11-16 09:33:27,205 INFO L226 Difference]: Without dead ends: 1176 [2024-11-16 09:33:27,205 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 [2024-11-16 09:33:27,207 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 1479 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:27,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 1605 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:27,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-16 09:33:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1173. [2024-11-16 09:33:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1171 states have (on average 1.725875320239112) internal successors, (2021), 1172 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 2021 transitions. [2024-11-16 09:33:27,283 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 2021 transitions. Word has length 41 [2024-11-16 09:33:27,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:27,283 INFO L471 AbstractCegarLoop]: Abstraction has 1173 states and 2021 transitions. [2024-11-16 09:33:27,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 2021 transitions. [2024-11-16 09:33:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:27,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:27,284 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:27,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 09:33:27,284 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:27,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:27,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1431026069, now seen corresponding path program 1 times [2024-11-16 09:33:27,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:27,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361751981] [2024-11-16 09:33:27,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:27,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:27,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:27,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361751981] [2024-11-16 09:33:27,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361751981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:27,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:27,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 09:33:27,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206976869] [2024-11-16 09:33:27,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:27,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 09:33:27,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:27,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 09:33:27,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:27,449 INFO L87 Difference]: Start difference. First operand 1173 states and 2021 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:27,510 INFO L93 Difference]: Finished difference Result 1200 states and 2055 transitions. [2024-11-16 09:33:27,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 09:33:27,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 09:33:27,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:27,514 INFO L225 Difference]: With dead ends: 1200 [2024-11-16 09:33:27,514 INFO L226 Difference]: Without dead ends: 1197 [2024-11-16 09:33:27,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:27,515 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 0 mSDsluCounter, 9047 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10557 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:27,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10557 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2024-11-16 09:33:27,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1197. [2024-11-16 09:33:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1195 states have (on average 1.707949790794979) internal successors, (2041), 1196 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 2041 transitions. [2024-11-16 09:33:27,532 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 2041 transitions. Word has length 41 [2024-11-16 09:33:27,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:27,533 INFO L471 AbstractCegarLoop]: Abstraction has 1197 states and 2041 transitions. [2024-11-16 09:33:27,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 2041 transitions. [2024-11-16 09:33:27,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 09:33:27,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:27,534 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:27,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 09:33:27,534 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:27,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:27,534 INFO L85 PathProgramCache]: Analyzing trace with hash 422057994, now seen corresponding path program 1 times [2024-11-16 09:33:27,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:27,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32626396] [2024-11-16 09:33:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:27,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:27,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:27,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32626396] [2024-11-16 09:33:27,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32626396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:27,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:27,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:27,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187583018] [2024-11-16 09:33:27,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:27,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:27,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:27,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:27,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:27,580 INFO L87 Difference]: Start difference. First operand 1197 states and 2041 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:27,604 INFO L93 Difference]: Finished difference Result 1655 states and 2682 transitions. [2024-11-16 09:33:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:27,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-16 09:33:27,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:27,610 INFO L225 Difference]: With dead ends: 1655 [2024-11-16 09:33:27,610 INFO L226 Difference]: Without dead ends: 1403 [2024-11-16 09:33:27,611 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 [2024-11-16 09:33:27,612 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 1480 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1604 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:27,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1604 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:27,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2024-11-16 09:33:27,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1400. [2024-11-16 09:33:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1398 states have (on average 1.65379113018598) internal successors, (2312), 1399 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2312 transitions. [2024-11-16 09:33:27,634 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2312 transitions. Word has length 43 [2024-11-16 09:33:27,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:27,634 INFO L471 AbstractCegarLoop]: Abstraction has 1400 states and 2312 transitions. [2024-11-16 09:33:27,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2312 transitions. [2024-11-16 09:33:27,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 09:33:27,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:27,635 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:27,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 09:33:27,636 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:27,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:27,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1397666540, now seen corresponding path program 1 times [2024-11-16 09:33:27,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:27,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126882750] [2024-11-16 09:33:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:27,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 09:33:27,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:27,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126882750] [2024-11-16 09:33:27,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126882750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:27,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:27,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:27,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299242226] [2024-11-16 09:33:27,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:27,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:27,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:27,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:27,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:27,736 INFO L87 Difference]: Start difference. First operand 1400 states and 2312 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:27,808 INFO L93 Difference]: Finished difference Result 3404 states and 5040 transitions. [2024-11-16 09:33:27,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:27,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-16 09:33:27,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:27,816 INFO L225 Difference]: With dead ends: 3404 [2024-11-16 09:33:27,816 INFO L226 Difference]: Without dead ends: 2785 [2024-11-16 09:33:27,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:27,818 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 3068 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3068 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:27,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3068 Valid, 3178 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2024-11-16 09:33:27,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2016. [2024-11-16 09:33:27,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 2014 states have (on average 1.561072492552135) internal successors, (3144), 2015 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 3144 transitions. [2024-11-16 09:33:27,856 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 3144 transitions. Word has length 58 [2024-11-16 09:33:27,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:27,857 INFO L471 AbstractCegarLoop]: Abstraction has 2016 states and 3144 transitions. [2024-11-16 09:33:27,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 3144 transitions. [2024-11-16 09:33:27,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 09:33:27,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:27,857 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:27,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 09:33:27,858 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:27,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:27,858 INFO L85 PathProgramCache]: Analyzing trace with hash -805698004, now seen corresponding path program 1 times [2024-11-16 09:33:27,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:27,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477492809] [2024-11-16 09:33:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:27,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 09:33:27,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:27,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477492809] [2024-11-16 09:33:27,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477492809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:27,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:27,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:27,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404636114] [2024-11-16 09:33:27,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:27,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:27,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:27,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:27,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:27,933 INFO L87 Difference]: Start difference. First operand 2016 states and 3144 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:28,014 INFO L93 Difference]: Finished difference Result 4020 states and 5872 transitions. [2024-11-16 09:33:28,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:28,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-16 09:33:28,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:28,023 INFO L225 Difference]: With dead ends: 4020 [2024-11-16 09:33:28,023 INFO L226 Difference]: Without dead ends: 3401 [2024-11-16 09:33:28,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:28,024 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 3073 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:28,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3073 Valid, 3167 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:28,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2024-11-16 09:33:28,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 2944. [2024-11-16 09:33:28,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2944 states, 2942 states have (on average 1.4901427600271924) internal successors, (4384), 2943 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 4384 transitions. [2024-11-16 09:33:28,074 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 4384 transitions. Word has length 58 [2024-11-16 09:33:28,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:28,074 INFO L471 AbstractCegarLoop]: Abstraction has 2944 states and 4384 transitions. [2024-11-16 09:33:28,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 4384 transitions. [2024-11-16 09:33:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 09:33:28,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:28,075 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:28,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 09:33:28,075 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:28,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:28,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1122141838, now seen corresponding path program 1 times [2024-11-16 09:33:28,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:28,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985904684] [2024-11-16 09:33:28,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:28,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:28,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:28,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985904684] [2024-11-16 09:33:28,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985904684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:28,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:28,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:28,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912560411] [2024-11-16 09:33:28,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:28,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:28,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:28,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:28,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:28,137 INFO L87 Difference]: Start difference. First operand 2944 states and 4384 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:28,175 INFO L93 Difference]: Finished difference Result 4536 states and 6563 transitions. [2024-11-16 09:33:28,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:28,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-16 09:33:28,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:28,182 INFO L225 Difference]: With dead ends: 4536 [2024-11-16 09:33:28,182 INFO L226 Difference]: Without dead ends: 2373 [2024-11-16 09:33:28,184 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 [2024-11-16 09:33:28,184 INFO L432 NwaCegarLoop]: 1542 mSDtfsCounter, 35 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:28,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:28,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2024-11-16 09:33:28,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2370. [2024-11-16 09:33:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2368 states have (on average 1.5261824324324325) internal successors, (3614), 2369 states have internal predecessors, (3614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3614 transitions. [2024-11-16 09:33:28,224 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3614 transitions. Word has length 60 [2024-11-16 09:33:28,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:28,224 INFO L471 AbstractCegarLoop]: Abstraction has 2370 states and 3614 transitions. [2024-11-16 09:33:28,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3614 transitions. [2024-11-16 09:33:28,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 09:33:28,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:28,225 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:28,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 09:33:28,225 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:28,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1252169204, now seen corresponding path program 1 times [2024-11-16 09:33:28,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:28,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128471889] [2024-11-16 09:33:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:28,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:33:28,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:28,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128471889] [2024-11-16 09:33:28,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128471889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:28,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:28,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733211226] [2024-11-16 09:33:28,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:28,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:28,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:28,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:28,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:28,306 INFO L87 Difference]: Start difference. First operand 2370 states and 3614 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:28,412 INFO L93 Difference]: Finished difference Result 3726 states and 5470 transitions. [2024-11-16 09:33:28,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:28,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-16 09:33:28,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:28,421 INFO L225 Difference]: With dead ends: 3726 [2024-11-16 09:33:28,421 INFO L226 Difference]: Without dead ends: 3275 [2024-11-16 09:33:28,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:28,423 INFO L432 NwaCegarLoop]: 1556 mSDtfsCounter, 3071 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3071 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:28,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3071 Valid, 3194 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:28,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2024-11-16 09:33:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 2818. [2024-11-16 09:33:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2816 states have (on average 1.4992897727272727) internal successors, (4222), 2817 states have internal predecessors, (4222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 4222 transitions. [2024-11-16 09:33:28,469 INFO L78 Accepts]: Start accepts. Automaton has 2818 states and 4222 transitions. Word has length 60 [2024-11-16 09:33:28,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:28,470 INFO L471 AbstractCegarLoop]: Abstraction has 2818 states and 4222 transitions. [2024-11-16 09:33:28,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2818 states and 4222 transitions. [2024-11-16 09:33:28,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 09:33:28,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:28,471 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:28,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 09:33:28,471 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:28,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:28,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1545598382, now seen corresponding path program 1 times [2024-11-16 09:33:28,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:28,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128090558] [2024-11-16 09:33:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:28,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:28,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:28,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128090558] [2024-11-16 09:33:28,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128090558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:28,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:28,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:28,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050318182] [2024-11-16 09:33:28,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:28,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:28,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:28,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:28,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:28,533 INFO L87 Difference]: Start difference. First operand 2818 states and 4222 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:28,561 INFO L93 Difference]: Finished difference Result 3832 states and 5594 transitions. [2024-11-16 09:33:28,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:28,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-16 09:33:28,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:28,566 INFO L225 Difference]: With dead ends: 3832 [2024-11-16 09:33:28,566 INFO L226 Difference]: Without dead ends: 1813 [2024-11-16 09:33:28,567 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 [2024-11-16 09:33:28,568 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 28 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:28,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:28,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2024-11-16 09:33:28,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1810. [2024-11-16 09:33:28,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1808 states have (on average 1.5685840707964602) internal successors, (2836), 1809 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2836 transitions. [2024-11-16 09:33:28,597 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2836 transitions. Word has length 62 [2024-11-16 09:33:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:28,597 INFO L471 AbstractCegarLoop]: Abstraction has 1810 states and 2836 transitions. [2024-11-16 09:33:28,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2836 transitions. [2024-11-16 09:33:28,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 09:33:28,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:28,598 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:28,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 09:33:28,598 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:28,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:28,599 INFO L85 PathProgramCache]: Analyzing trace with hash 585202352, now seen corresponding path program 1 times [2024-11-16 09:33:28,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:28,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44859666] [2024-11-16 09:33:28,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:28,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:28,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:28,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44859666] [2024-11-16 09:33:28,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44859666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:28,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:28,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:28,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012057229] [2024-11-16 09:33:28,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:28,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:28,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:28,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:28,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:28,654 INFO L87 Difference]: Start difference. First operand 1810 states and 2836 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:28,674 INFO L93 Difference]: Finished difference Result 2320 states and 3515 transitions. [2024-11-16 09:33:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:28,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-16 09:33:28,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:28,678 INFO L225 Difference]: With dead ends: 2320 [2024-11-16 09:33:28,678 INFO L226 Difference]: Without dead ends: 1309 [2024-11-16 09:33:28,682 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 [2024-11-16 09:33:28,682 INFO L432 NwaCegarLoop]: 1528 mSDtfsCounter, 23 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3013 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:28,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3013 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:28,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2024-11-16 09:33:28,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1306. [2024-11-16 09:33:28,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1304 states have (on average 1.6503067484662577) internal successors, (2152), 1305 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 2152 transitions. [2024-11-16 09:33:28,705 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 2152 transitions. Word has length 64 [2024-11-16 09:33:28,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:28,705 INFO L471 AbstractCegarLoop]: Abstraction has 1306 states and 2152 transitions. [2024-11-16 09:33:28,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 2152 transitions. [2024-11-16 09:33:28,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 09:33:28,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:28,706 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:28,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 09:33:28,707 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:28,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:28,707 INFO L85 PathProgramCache]: Analyzing trace with hash 65408791, now seen corresponding path program 1 times [2024-11-16 09:33:28,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:28,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352012123] [2024-11-16 09:33:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:28,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:28,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:28,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352012123] [2024-11-16 09:33:28,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352012123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:28,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841572624] [2024-11-16 09:33:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:28,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:28,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:28,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:33:28,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 09:33:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:29,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 09:33:29,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:29,466 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:29,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:30,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841572624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:30,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:30,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-16 09:33:30,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904474499] [2024-11-16 09:33:30,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:30,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 09:33:30,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:30,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 09:33:30,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-16 09:33:30,103 INFO L87 Difference]: Start difference. First operand 1306 states and 2152 transitions. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:30,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:30,550 INFO L93 Difference]: Finished difference Result 2377 states and 3571 transitions. [2024-11-16 09:33:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 09:33:30,551 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-16 09:33:30,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:30,555 INFO L225 Difference]: With dead ends: 2377 [2024-11-16 09:33:30,555 INFO L226 Difference]: Without dead ends: 1870 [2024-11-16 09:33:30,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2024-11-16 09:33:30,557 INFO L432 NwaCegarLoop]: 1497 mSDtfsCounter, 15349 mSDsluCounter, 4746 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15349 SdHoareTripleChecker+Valid, 6243 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:30,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15349 Valid, 6243 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 09:33:30,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2024-11-16 09:33:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1846. [2024-11-16 09:33:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1844 states have (on average 1.5428416485900216) internal successors, (2845), 1845 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2845 transitions. [2024-11-16 09:33:30,597 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2845 transitions. Word has length 66 [2024-11-16 09:33:30,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:30,597 INFO L471 AbstractCegarLoop]: Abstraction has 1846 states and 2845 transitions. [2024-11-16 09:33:30,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:30,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2845 transitions. [2024-11-16 09:33:30,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 09:33:30,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:30,599 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:30,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 09:33:30,799 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,SelfDestructingSolverStorable15 [2024-11-16 09:33:30,800 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:30,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2079770871, now seen corresponding path program 1 times [2024-11-16 09:33:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:30,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366955074] [2024-11-16 09:33:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:30,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:31,050 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:31,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:31,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366955074] [2024-11-16 09:33:31,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366955074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:31,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705236993] [2024-11-16 09:33:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:31,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:31,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:31,053 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:33:31,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 09:33:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:31,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-16 09:33:31,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:34,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:36,483 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:36,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705236993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:36,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:36,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 20] total 44 [2024-11-16 09:33:36,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38098917] [2024-11-16 09:33:36,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:36,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 09:33:36,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:36,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 09:33:36,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1564, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 09:33:36,485 INFO L87 Difference]: Start difference. First operand 1846 states and 2845 transitions. Second operand has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:43,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:43,405 INFO L93 Difference]: Finished difference Result 8497 states and 11465 transitions. [2024-11-16 09:33:43,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-16 09:33:43,406 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-16 09:33:43,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:43,416 INFO L225 Difference]: With dead ends: 8497 [2024-11-16 09:33:43,416 INFO L226 Difference]: Without dead ends: 7450 [2024-11-16 09:33:43,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4699 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=3071, Invalid=11691, Unknown=0, NotChecked=0, Total=14762 [2024-11-16 09:33:43,421 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 13611 mSDsluCounter, 14524 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13611 SdHoareTripleChecker+Valid, 16042 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:43,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13611 Valid, 16042 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1355 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 09:33:43,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7450 states. [2024-11-16 09:33:43,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7450 to 4186. [2024-11-16 09:33:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 4184 states have (on average 1.3984225621414914) internal successors, (5851), 4185 states have internal predecessors, (5851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 5851 transitions. [2024-11-16 09:33:43,515 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 5851 transitions. Word has length 66 [2024-11-16 09:33:43,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:43,515 INFO L471 AbstractCegarLoop]: Abstraction has 4186 states and 5851 transitions. [2024-11-16 09:33:43,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 5851 transitions. [2024-11-16 09:33:43,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 09:33:43,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:43,516 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:43,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 09:33:43,717 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,SelfDestructingSolverStorable16 [2024-11-16 09:33:43,718 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:43,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:43,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1699220583, now seen corresponding path program 1 times [2024-11-16 09:33:43,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:43,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261213112] [2024-11-16 09:33:43,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:43,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:44,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:44,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261213112] [2024-11-16 09:33:44,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261213112] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:44,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383744232] [2024-11-16 09:33:44,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:44,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:44,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:44,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:33:44,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 09:33:44,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:44,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 09:33:44,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:46,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:47,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383744232] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:47,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:47,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 21] total 57 [2024-11-16 09:33:47,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303887978] [2024-11-16 09:33:47,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:47,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-16 09:33:47,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:47,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-16 09:33:47,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2885, Unknown=0, NotChecked=0, Total=3192 [2024-11-16 09:33:47,745 INFO L87 Difference]: Start difference. First operand 4186 states and 5851 transitions. Second operand has 57 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 57 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:58,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:58,379 INFO L93 Difference]: Finished difference Result 11233 states and 14866 transitions. [2024-11-16 09:33:58,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-16 09:33:58,380 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 57 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-16 09:33:58,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:58,389 INFO L225 Difference]: With dead ends: 11233 [2024-11-16 09:33:58,389 INFO L226 Difference]: Without dead ends: 9430 [2024-11-16 09:33:58,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6579 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=4780, Invalid=19400, Unknown=0, NotChecked=0, Total=24180 [2024-11-16 09:33:58,395 INFO L432 NwaCegarLoop]: 1555 mSDtfsCounter, 28822 mSDsluCounter, 27731 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28822 SdHoareTripleChecker+Valid, 29286 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:58,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28822 Valid, 29286 Invalid, 2932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 09:33:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9430 states. [2024-11-16 09:33:58,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9430 to 3970. [2024-11-16 09:33:58,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 3968 states have (on average 1.4017137096774193) internal successors, (5562), 3969 states have internal predecessors, (5562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:58,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 5562 transitions. [2024-11-16 09:33:58,498 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 5562 transitions. Word has length 67 [2024-11-16 09:33:58,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:58,498 INFO L471 AbstractCegarLoop]: Abstraction has 3970 states and 5562 transitions. [2024-11-16 09:33:58,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 57 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:58,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 5562 transitions. [2024-11-16 09:33:58,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 09:33:58,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:58,499 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:58,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 09:33:58,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 09:33:58,700 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:58,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:58,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2033078427, now seen corresponding path program 1 times [2024-11-16 09:33:58,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:58,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92756754] [2024-11-16 09:33:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:58,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:58,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:58,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92756754] [2024-11-16 09:33:58,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92756754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:58,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736080963] [2024-11-16 09:33:58,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:58,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:58,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:58,983 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) [2024-11-16 09:33:58,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 09:33:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:59,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 09:33:59,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:33:59,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:33:59,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736080963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:59,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:59,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2024-11-16 09:33:59,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060866077] [2024-11-16 09:33:59,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:59,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 09:33:59,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:59,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 09:33:59,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:33:59,269 INFO L87 Difference]: Start difference. First operand 3970 states and 5562 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:00,311 INFO L93 Difference]: Finished difference Result 11252 states and 14736 transitions. [2024-11-16 09:34:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-16 09:34:00,311 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 09:34:00,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:00,321 INFO L225 Difference]: With dead ends: 11252 [2024-11-16 09:34:00,321 INFO L226 Difference]: Without dead ends: 8081 [2024-11-16 09:34:00,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=371, Invalid=1269, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 09:34:00,325 INFO L432 NwaCegarLoop]: 1519 mSDtfsCounter, 9353 mSDsluCounter, 6268 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9353 SdHoareTripleChecker+Valid, 7787 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:34:00,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9353 Valid, 7787 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 09:34:00,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8081 states. [2024-11-16 09:34:00,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8081 to 7988. [2024-11-16 09:34:00,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7988 states, 7986 states have (on average 1.279739544202354) internal successors, (10220), 7987 states have internal predecessors, (10220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7988 states to 7988 states and 10220 transitions. [2024-11-16 09:34:00,564 INFO L78 Accepts]: Start accepts. Automaton has 7988 states and 10220 transitions. Word has length 68 [2024-11-16 09:34:00,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:00,564 INFO L471 AbstractCegarLoop]: Abstraction has 7988 states and 10220 transitions. [2024-11-16 09:34:00,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:00,564 INFO L276 IsEmpty]: Start isEmpty. Operand 7988 states and 10220 transitions. [2024-11-16 09:34:00,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:34:00,565 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:00,565 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:34:00,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 09:34:00,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:00,770 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:00,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:00,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1878836538, now seen corresponding path program 1 times [2024-11-16 09:34:00,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:00,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993428623] [2024-11-16 09:34:00,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:00,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:00,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:00,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993428623] [2024-11-16 09:34:00,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993428623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:34:00,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:34:00,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:34:00,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862206535] [2024-11-16 09:34:00,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:34:00,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 09:34:00,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:00,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 09:34:00,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 09:34:00,888 INFO L87 Difference]: Start difference. First operand 7988 states and 10220 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:04,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:04,949 INFO L93 Difference]: Finished difference Result 10247 states and 14533 transitions. [2024-11-16 09:34:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 09:34:04,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 09:34:04,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:04,962 INFO L225 Difference]: With dead ends: 10247 [2024-11-16 09:34:04,962 INFO L226 Difference]: Without dead ends: 9492 [2024-11-16 09:34:04,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:34:04,965 INFO L432 NwaCegarLoop]: 752 mSDtfsCounter, 2331 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2331 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:34:04,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2331 Valid, 775 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-16 09:34:04,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9492 states. [2024-11-16 09:34:05,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9492 to 9492. [2024-11-16 09:34:05,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9492 states, 9490 states have (on average 1.2998946259220232) internal successors, (12336), 9491 states have internal predecessors, (12336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:05,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9492 states to 9492 states and 12336 transitions. [2024-11-16 09:34:05,274 INFO L78 Accepts]: Start accepts. Automaton has 9492 states and 12336 transitions. Word has length 69 [2024-11-16 09:34:05,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:05,274 INFO L471 AbstractCegarLoop]: Abstraction has 9492 states and 12336 transitions. [2024-11-16 09:34:05,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:05,274 INFO L276 IsEmpty]: Start isEmpty. Operand 9492 states and 12336 transitions. [2024-11-16 09:34:05,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:34:05,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:05,275 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:34:05,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 09:34:05,275 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:05,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:05,276 INFO L85 PathProgramCache]: Analyzing trace with hash -731290903, now seen corresponding path program 1 times [2024-11-16 09:34:05,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:05,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929158968] [2024-11-16 09:34:05,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:05,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:06,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:06,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929158968] [2024-11-16 09:34:06,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929158968] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:34:06,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717172186] [2024-11-16 09:34:06,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:06,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:06,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:34:06,269 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) [2024-11-16 09:34:06,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 09:34:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:06,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-16 09:34:06,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:34:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:07,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:34:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:09,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717172186] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:34:09,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:34:09,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 18] total 52 [2024-11-16 09:34:09,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70990640] [2024-11-16 09:34:09,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:34:09,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-16 09:34:09,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-16 09:34:09,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2418, Unknown=0, NotChecked=0, Total=2652 [2024-11-16 09:34:09,589 INFO L87 Difference]: Start difference. First operand 9492 states and 12336 transitions. Second operand has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:16,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:16,091 INFO L93 Difference]: Finished difference Result 15401 states and 19535 transitions. [2024-11-16 09:34:16,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-16 09:34:16,091 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 09:34:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:16,101 INFO L225 Difference]: With dead ends: 15401 [2024-11-16 09:34:16,102 INFO L226 Difference]: Without dead ends: 11296 [2024-11-16 09:34:16,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2590 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1848, Invalid=9072, Unknown=0, NotChecked=0, Total=10920 [2024-11-16 09:34:16,109 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 27653 mSDsluCounter, 29660 mSDsCounter, 0 mSdLazyCounter, 2474 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27653 SdHoareTripleChecker+Valid, 31165 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:34:16,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27653 Valid, 31165 Invalid, 2554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2474 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 09:34:16,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11296 states. [2024-11-16 09:34:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11296 to 8074. [2024-11-16 09:34:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8074 states, 8072 states have (on average 1.3204905847373638) internal successors, (10659), 8073 states have internal predecessors, (10659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8074 states to 8074 states and 10659 transitions. [2024-11-16 09:34:16,373 INFO L78 Accepts]: Start accepts. Automaton has 8074 states and 10659 transitions. Word has length 69 [2024-11-16 09:34:16,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:16,374 INFO L471 AbstractCegarLoop]: Abstraction has 8074 states and 10659 transitions. [2024-11-16 09:34:16,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:34:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 8074 states and 10659 transitions. [2024-11-16 09:34:16,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-16 09:34:16,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:16,377 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:34:16,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 09:34:16,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:16,581 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:16,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:16,581 INFO L85 PathProgramCache]: Analyzing trace with hash 621848533, now seen corresponding path program 1 times [2024-11-16 09:34:16,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:16,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742725464] [2024-11-16 09:34:16,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:16,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:17,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:17,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742725464] [2024-11-16 09:34:17,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742725464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:34:17,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21836014] [2024-11-16 09:34:17,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:17,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:17,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:34:17,188 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) [2024-11-16 09:34:17,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 09:34:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:17,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 09:34:17,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:34:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:18,292 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:34:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:20,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21836014] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:34:20,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:34:20,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 17] total 47 [2024-11-16 09:34:20,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663240651] [2024-11-16 09:34:20,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:34:20,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-16 09:34:20,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:20,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-16 09:34:20,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1971, Unknown=0, NotChecked=0, Total=2162 [2024-11-16 09:34:20,541 INFO L87 Difference]: Start difference. First operand 8074 states and 10659 transitions. Second operand has 47 states, 47 states have (on average 6.48936170212766) internal successors, (305), 47 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)