./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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/Problem05_label45+token_ring.02.cil-1.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 1e48f4337a15a9c341fdd857d44943beb3f49e54e3888dcfe82472f36a11730d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 03:23:23,755 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 03:23:23,809 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 03:23:23,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 03:23:23,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 03:23:23,845 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 03:23:23,846 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 03:23:23,846 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 03:23:23,847 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 03:23:23,847 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 03:23:23,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 03:23:23,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 03:23:23,849 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 03:23:23,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 03:23:23,850 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 03:23:23,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 03:23:23,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 03:23:23,851 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 03:23:23,852 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 03:23:23,852 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 03:23:23,852 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 03:23:23,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 03:23:23,853 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 03:23:23,853 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 03:23:23,854 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 03:23:23,854 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 03:23:23,854 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 03:23:23,854 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 03:23:23,855 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 03:23:23,855 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 03:23:23,855 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 03:23:23,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 03:23:23,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:23:23,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 03:23:23,856 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 03:23:23,856 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 03:23:23,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 03:23:23,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 03:23:23,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 03:23:23,857 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 03:23:23,857 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 03:23:23,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 03:23:23,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e48f4337a15a9c341fdd857d44943beb3f49e54e3888dcfe82472f36a11730d [2024-11-22 03:23:24,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 03:23:24,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 03:23:24,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 03:23:24,096 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 03:23:24,096 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 03:23:24,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-1.c [2024-11-22 03:23:25,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 03:23:25,888 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 03:23:25,889 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.02.cil-1.c [2024-11-22 03:23:25,957 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90bd89786/37a62bb3607a4eca88dc36931fc7a18a/FLAG2efca81cb [2024-11-22 03:23:26,007 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90bd89786/37a62bb3607a4eca88dc36931fc7a18a [2024-11-22 03:23:26,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 03:23:26,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 03:23:26,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 03:23:26,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 03:23:26,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 03:23:26,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:23:26" (1/1) ... [2024-11-22 03:23:26,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31fa18b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:26, skipping insertion in model container [2024-11-22 03:23:26,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:23:26" (1/1) ... [2024-11-22 03:23:26,167 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 03:23:27,406 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/Problem05_label45+token_ring.02.cil-1.c[380323,380336] [2024-11-22 03:23:27,429 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/Problem05_label45+token_ring.02.cil-1.c[383339,383352] [2024-11-22 03:23:27,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:23:27,572 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 03:23:28,199 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/Problem05_label45+token_ring.02.cil-1.c[380323,380336] [2024-11-22 03:23:28,204 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/Problem05_label45+token_ring.02.cil-1.c[383339,383352] [2024-11-22 03:23:28,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 03:23:28,260 INFO L204 MainTranslator]: Completed translation [2024-11-22 03:23:28,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28 WrapperNode [2024-11-22 03:23:28,261 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 03:23:28,262 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 03:23:28,262 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 03:23:28,262 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 03:23:28,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28" (1/1) ... [2024-11-22 03:23:28,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28" (1/1) ... [2024-11-22 03:23:28,637 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12633 [2024-11-22 03:23:28,637 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 03:23:28,638 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 03:23:28,638 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 03:23:28,638 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 03:23:28,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28" (1/1) ... [2024-11-22 03:23:28,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28" (1/1) ... [2024-11-22 03:23:28,687 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28" (1/1) ... [2024-11-22 03:23:28,760 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]. [2024-11-22 03:23:28,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28" (1/1) ... [2024-11-22 03:23:28,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28" (1/1) ... [2024-11-22 03:23:28,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28" (1/1) ... [2024-11-22 03:23:29,032 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28" (1/1) ... [2024-11-22 03:23:29,056 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28" (1/1) ... [2024-11-22 03:23:29,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28" (1/1) ... [2024-11-22 03:23:29,128 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 03:23:29,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 03:23:29,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 03:23:29,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 03:23:29,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28" (1/1) ... [2024-11-22 03:23:29,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 03:23:29,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:23:29,167 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) [2024-11-22 03:23:29,169 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 [2024-11-22 03:23:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 03:23:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-22 03:23:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-22 03:23:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-22 03:23:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-22 03:23:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-22 03:23:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-22 03:23:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-22 03:23:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-22 03:23:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-22 03:23:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-22 03:23:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 03:23:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-22 03:23:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-22 03:23:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 03:23:29,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 03:23:29,372 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 03:23:29,374 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 03:23:35,665 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2024-11-22 03:23:35,665 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 03:23:35,720 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 03:23:35,720 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-22 03:23:35,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:23:35 BoogieIcfgContainer [2024-11-22 03:23:35,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 03:23:35,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 03:23:35,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 03:23:35,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 03:23:35,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:23:26" (1/3) ... [2024-11-22 03:23:35,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392fdc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:23:35, skipping insertion in model container [2024-11-22 03:23:35,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:23:28" (2/3) ... [2024-11-22 03:23:35,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@392fdc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:23:35, skipping insertion in model container [2024-11-22 03:23:35,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:23:35" (3/3) ... [2024-11-22 03:23:35,738 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.02.cil-1.c [2024-11-22 03:23:35,754 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 03:23:35,754 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 03:23:35,841 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 03:23:35,849 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b1954ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 03:23:35,849 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 03:23:35,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 2318 states, 2293 states have (on average 1.8560837331007414) internal successors, (4256), 2296 states have internal predecessors, (4256), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-22 03:23:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 03:23:35,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:35,869 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] [2024-11-22 03:23:35,869 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:35,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:35,873 INFO L85 PathProgramCache]: Analyzing trace with hash -257117409, now seen corresponding path program 1 times [2024-11-22 03:23:35,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:35,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244810787] [2024-11-22 03:23:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:35,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:36,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:36,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244810787] [2024-11-22 03:23:36,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244810787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:36,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:36,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 03:23:36,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471507491] [2024-11-22 03:23:36,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:36,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 03:23:36,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:36,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 03:23:36,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 03:23:36,230 INFO L87 Difference]: Start difference. First operand has 2318 states, 2293 states have (on average 1.8560837331007414) internal successors, (4256), 2296 states have internal predecessors, (4256), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:36,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:36,650 INFO L93 Difference]: Finished difference Result 4757 states and 8765 transitions. [2024-11-22 03:23:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 03:23:36,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-22 03:23:36,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:36,682 INFO L225 Difference]: With dead ends: 4757 [2024-11-22 03:23:36,683 INFO L226 Difference]: Without dead ends: 2379 [2024-11-22 03:23:36,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:36,699 INFO L432 NwaCegarLoop]: 4173 mSDtfsCounter, 4329 mSDsluCounter, 8410 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4339 SdHoareTripleChecker+Valid, 12583 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:36,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4339 Valid, 12583 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 03:23:36,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2024-11-22 03:23:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 2370. [2024-11-22 03:23:36,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2328 states have (on average 1.8311855670103092) internal successors, (4263), 2331 states have internal predecessors, (4263), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2024-11-22 03:23:36,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 4318 transitions. [2024-11-22 03:23:36,831 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 4318 transitions. Word has length 68 [2024-11-22 03:23:36,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:36,832 INFO L471 AbstractCegarLoop]: Abstraction has 2370 states and 4318 transitions. [2024-11-22 03:23:36,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:36,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 4318 transitions. [2024-11-22 03:23:36,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 03:23:36,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:36,837 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] [2024-11-22 03:23:36,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 03:23:36,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:36,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1270216611, now seen corresponding path program 1 times [2024-11-22 03:23:36,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:36,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260175585] [2024-11-22 03:23:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:36,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:37,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:37,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:37,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260175585] [2024-11-22 03:23:37,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260175585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:37,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:37,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:23:37,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463621654] [2024-11-22 03:23:37,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:37,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:23:37,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:37,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:23:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:37,004 INFO L87 Difference]: Start difference. First operand 2370 states and 4318 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:37,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:37,386 INFO L93 Difference]: Finished difference Result 2754 states and 4879 transitions. [2024-11-22 03:23:37,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:23:37,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-22 03:23:37,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:37,397 INFO L225 Difference]: With dead ends: 2754 [2024-11-22 03:23:37,397 INFO L226 Difference]: Without dead ends: 2515 [2024-11-22 03:23:37,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 03:23:37,401 INFO L432 NwaCegarLoop]: 4193 mSDtfsCounter, 4252 mSDsluCounter, 12548 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4262 SdHoareTripleChecker+Valid, 16741 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:37,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4262 Valid, 16741 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 03:23:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2024-11-22 03:23:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2482. [2024-11-22 03:23:37,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2422 states have (on average 1.8158546655656482) internal successors, (4398), 2426 states have internal predecessors, (4398), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2024-11-22 03:23:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 4478 transitions. [2024-11-22 03:23:37,463 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 4478 transitions. Word has length 68 [2024-11-22 03:23:37,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:37,464 INFO L471 AbstractCegarLoop]: Abstraction has 2482 states and 4478 transitions. [2024-11-22 03:23:37,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:37,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 4478 transitions. [2024-11-22 03:23:37,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 03:23:37,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:37,469 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] [2024-11-22 03:23:37,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 03:23:37,469 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:37,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:37,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2146235617, now seen corresponding path program 1 times [2024-11-22 03:23:37,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:37,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336833376] [2024-11-22 03:23:37,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:37,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:37,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:37,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336833376] [2024-11-22 03:23:37,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336833376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:37,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:37,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:23:37,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605973820] [2024-11-22 03:23:37,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:37,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:23:37,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:37,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:23:37,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:37,598 INFO L87 Difference]: Start difference. First operand 2482 states and 4478 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:37,938 INFO L93 Difference]: Finished difference Result 3100 states and 5378 transitions. [2024-11-22 03:23:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:23:37,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-22 03:23:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:37,948 INFO L225 Difference]: With dead ends: 3100 [2024-11-22 03:23:37,949 INFO L226 Difference]: Without dead ends: 2749 [2024-11-22 03:23:37,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 03:23:37,951 INFO L432 NwaCegarLoop]: 4105 mSDtfsCounter, 4259 mSDsluCounter, 12349 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4269 SdHoareTripleChecker+Valid, 16454 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:37,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4269 Valid, 16454 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 03:23:37,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2024-11-22 03:23:38,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2715. [2024-11-22 03:23:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2617 states have (on average 1.7879251050821552) internal successors, (4679), 2625 states have internal predecessors, (4679), 60 states have call successors, (60), 30 states have call predecessors, (60), 36 states have return successors, (76), 63 states have call predecessors, (76), 60 states have call successors, (76) [2024-11-22 03:23:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 4815 transitions. [2024-11-22 03:23:38,022 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 4815 transitions. Word has length 68 [2024-11-22 03:23:38,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:38,022 INFO L471 AbstractCegarLoop]: Abstraction has 2715 states and 4815 transitions. [2024-11-22 03:23:38,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:38,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 4815 transitions. [2024-11-22 03:23:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 03:23:38,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:38,025 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] [2024-11-22 03:23:38,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 03:23:38,026 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:38,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:38,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1704831005, now seen corresponding path program 1 times [2024-11-22 03:23:38,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:38,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170071486] [2024-11-22 03:23:38,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:38,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:38,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:38,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170071486] [2024-11-22 03:23:38,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170071486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:38,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:38,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:23:38,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937097175] [2024-11-22 03:23:38,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:38,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:23:38,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:38,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:23:38,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:38,147 INFO L87 Difference]: Start difference. First operand 2715 states and 4815 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:38,673 INFO L93 Difference]: Finished difference Result 3851 states and 6474 transitions. [2024-11-22 03:23:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:23:38,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-22 03:23:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:38,684 INFO L225 Difference]: With dead ends: 3851 [2024-11-22 03:23:38,684 INFO L226 Difference]: Without dead ends: 3267 [2024-11-22 03:23:38,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 03:23:38,686 INFO L432 NwaCegarLoop]: 4179 mSDtfsCounter, 4251 mSDsluCounter, 12503 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4260 SdHoareTripleChecker+Valid, 16682 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:38,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4260 Valid, 16682 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 03:23:38,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2024-11-22 03:23:38,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 3161. [2024-11-22 03:23:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3161 states, 2985 states have (on average 1.743718592964824) internal successors, (5205), 3007 states have internal predecessors, (5205), 100 states have call successors, (100), 54 states have call predecessors, (100), 74 states have return successors, (164), 107 states have call predecessors, (164), 100 states have call successors, (164) [2024-11-22 03:23:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 5469 transitions. [2024-11-22 03:23:38,771 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 5469 transitions. Word has length 68 [2024-11-22 03:23:38,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:38,771 INFO L471 AbstractCegarLoop]: Abstraction has 3161 states and 5469 transitions. [2024-11-22 03:23:38,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:38,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 5469 transitions. [2024-11-22 03:23:38,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 03:23:38,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:38,773 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] [2024-11-22 03:23:38,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 03:23:38,773 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:38,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:38,773 INFO L85 PathProgramCache]: Analyzing trace with hash 561550181, now seen corresponding path program 1 times [2024-11-22 03:23:38,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:38,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490691589] [2024-11-22 03:23:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:38,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:38,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:38,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:38,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490691589] [2024-11-22 03:23:38,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490691589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:38,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:38,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 03:23:38,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240690901] [2024-11-22 03:23:38,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:38,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 03:23:38,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:38,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 03:23:38,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:38,854 INFO L87 Difference]: Start difference. First operand 3161 states and 5469 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:39,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:39,248 INFO L93 Difference]: Finished difference Result 5213 states and 8518 transitions. [2024-11-22 03:23:39,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 03:23:39,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-22 03:23:39,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:39,264 INFO L225 Difference]: With dead ends: 5213 [2024-11-22 03:23:39,264 INFO L226 Difference]: Without dead ends: 4183 [2024-11-22 03:23:39,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 03:23:39,269 INFO L432 NwaCegarLoop]: 4177 mSDtfsCounter, 4248 mSDsluCounter, 12497 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4261 SdHoareTripleChecker+Valid, 16674 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:39,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4261 Valid, 16674 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 03:23:39,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2024-11-22 03:23:39,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 4088. [2024-11-22 03:23:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 3742 states have (on average 1.6774452164617852) internal successors, (6277), 3810 states have internal predecessors, (6277), 176 states have call successors, (176), 102 states have call predecessors, (176), 168 states have return successors, (432), 191 states have call predecessors, (432), 176 states have call successors, (432) [2024-11-22 03:23:39,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 6885 transitions. [2024-11-22 03:23:39,413 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 6885 transitions. Word has length 68 [2024-11-22 03:23:39,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:39,414 INFO L471 AbstractCegarLoop]: Abstraction has 4088 states and 6885 transitions. [2024-11-22 03:23:39,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 6885 transitions. [2024-11-22 03:23:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 03:23:39,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:39,417 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] [2024-11-22 03:23:39,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 03:23:39,417 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:39,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash 80469923, now seen corresponding path program 1 times [2024-11-22 03:23:39,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:39,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665147934] [2024-11-22 03:23:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:39,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 03:23:39,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:39,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665147934] [2024-11-22 03:23:39,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665147934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:39,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:23:39,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 03:23:39,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157811921] [2024-11-22 03:23:39,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:39,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 03:23:39,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:39,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 03:23:39,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:23:39,477 INFO L87 Difference]: Start difference. First operand 4088 states and 6885 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:39,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:39,681 INFO L93 Difference]: Finished difference Result 7109 states and 11454 transitions. [2024-11-22 03:23:39,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 03:23:39,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-22 03:23:39,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:39,701 INFO L225 Difference]: With dead ends: 7109 [2024-11-22 03:23:39,701 INFO L226 Difference]: Without dead ends: 5153 [2024-11-22 03:23:39,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 03:23:39,710 INFO L432 NwaCegarLoop]: 4297 mSDtfsCounter, 4271 mSDsluCounter, 4238 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4271 SdHoareTripleChecker+Valid, 8535 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:39,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4271 Valid, 8535 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 03:23:39,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5153 states. [2024-11-22 03:23:39,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5153 to 5072. [2024-11-22 03:23:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5072 states, 4556 states have (on average 1.620939420544337) internal successors, (7385), 4653 states have internal predecessors, (7385), 272 states have call successors, (272), 156 states have call predecessors, (272), 242 states have return successors, (585), 278 states have call predecessors, (585), 272 states have call successors, (585) [2024-11-22 03:23:39,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5072 states to 5072 states and 8242 transitions. [2024-11-22 03:23:39,878 INFO L78 Accepts]: Start accepts. Automaton has 5072 states and 8242 transitions. Word has length 68 [2024-11-22 03:23:39,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:39,880 INFO L471 AbstractCegarLoop]: Abstraction has 5072 states and 8242 transitions. [2024-11-22 03:23:39,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 03:23:39,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5072 states and 8242 transitions. [2024-11-22 03:23:39,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 03:23:39,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:39,890 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:23:39,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 03:23:39,890 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:39,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:39,891 INFO L85 PathProgramCache]: Analyzing trace with hash -855841062, now seen corresponding path program 1 times [2024-11-22 03:23:39,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:39,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086337488] [2024-11-22 03:23:39,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:39,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:39,956 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 03:23:39,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:39,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086337488] [2024-11-22 03:23:39,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086337488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:23:39,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000355886] [2024-11-22 03:23:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:39,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:39,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:23:39,960 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) [2024-11-22 03:23:39,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 03:23:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:40,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:23:40,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:23:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 03:23:40,111 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:23:40,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000355886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:40,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:23:40,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 03:23:40,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120312397] [2024-11-22 03:23:40,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:40,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:23:40,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:40,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:23:40,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:40,113 INFO L87 Difference]: Start difference. First operand 5072 states and 8242 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 03:23:40,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:40,350 INFO L93 Difference]: Finished difference Result 10809 states and 16648 transitions. [2024-11-22 03:23:40,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:23:40,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 111 [2024-11-22 03:23:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:40,382 INFO L225 Difference]: With dead ends: 10809 [2024-11-22 03:23:40,382 INFO L226 Difference]: Without dead ends: 7869 [2024-11-22 03:23:40,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:40,392 INFO L432 NwaCegarLoop]: 4141 mSDtfsCounter, 4100 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4100 SdHoareTripleChecker+Valid, 4302 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:40,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4100 Valid, 4302 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:23:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7869 states. [2024-11-22 03:23:40,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7869 to 7815. [2024-11-22 03:23:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7815 states, 6823 states have (on average 1.5479994137476183) internal successors, (10562), 7015 states have internal predecessors, (10562), 510 states have call successors, (510), 308 states have call predecessors, (510), 480 states have return successors, (1121), 507 states have call predecessors, (1121), 510 states have call successors, (1121) [2024-11-22 03:23:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7815 states to 7815 states and 12193 transitions. [2024-11-22 03:23:40,664 INFO L78 Accepts]: Start accepts. Automaton has 7815 states and 12193 transitions. Word has length 111 [2024-11-22 03:23:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:40,666 INFO L471 AbstractCegarLoop]: Abstraction has 7815 states and 12193 transitions. [2024-11-22 03:23:40,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-22 03:23:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 7815 states and 12193 transitions. [2024-11-22 03:23:40,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 03:23:40,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:40,675 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:23:40,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 03:23:40,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:40,876 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:40,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:40,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1748397894, now seen corresponding path program 1 times [2024-11-22 03:23:40,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:40,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911986148] [2024-11-22 03:23:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:40,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 03:23:40,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:40,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911986148] [2024-11-22 03:23:40,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911986148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:23:40,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257389755] [2024-11-22 03:23:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:40,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:40,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:23:40,937 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) [2024-11-22 03:23:40,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 03:23:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:41,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:23:41,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:23:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 03:23:41,041 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:23:41,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257389755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:41,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:23:41,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 03:23:41,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46119938] [2024-11-22 03:23:41,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:41,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:23:41,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:41,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:23:41,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:41,043 INFO L87 Difference]: Start difference. First operand 7815 states and 12193 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 03:23:41,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:41,489 INFO L93 Difference]: Finished difference Result 18857 states and 28495 transitions. [2024-11-22 03:23:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:23:41,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 111 [2024-11-22 03:23:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:41,546 INFO L225 Difference]: With dead ends: 18857 [2024-11-22 03:23:41,547 INFO L226 Difference]: Without dead ends: 13175 [2024-11-22 03:23:41,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:41,563 INFO L432 NwaCegarLoop]: 4304 mSDtfsCounter, 156 mSDsluCounter, 4140 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 8444 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:41,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 8444 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:23:41,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13175 states. [2024-11-22 03:23:42,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13175 to 13175. [2024-11-22 03:23:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13175 states, 11246 states have (on average 1.485950560199182) internal successors, (16711), 11611 states have internal predecessors, (16711), 975 states have call successors, (975), 608 states have call predecessors, (975), 952 states have return successors, (2348), 987 states have call predecessors, (2348), 975 states have call successors, (2348) [2024-11-22 03:23:42,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13175 states to 13175 states and 20034 transitions. [2024-11-22 03:23:42,287 INFO L78 Accepts]: Start accepts. Automaton has 13175 states and 20034 transitions. Word has length 111 [2024-11-22 03:23:42,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:42,291 INFO L471 AbstractCegarLoop]: Abstraction has 13175 states and 20034 transitions. [2024-11-22 03:23:42,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-22 03:23:42,293 INFO L276 IsEmpty]: Start isEmpty. Operand 13175 states and 20034 transitions. [2024-11-22 03:23:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-22 03:23:42,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:42,327 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:23:42,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 03:23:42,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-22 03:23:42,528 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:42,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:42,528 INFO L85 PathProgramCache]: Analyzing trace with hash 508044484, now seen corresponding path program 1 times [2024-11-22 03:23:42,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:42,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398860583] [2024-11-22 03:23:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:42,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-22 03:23:42,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:42,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398860583] [2024-11-22 03:23:42,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398860583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:23:42,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765064835] [2024-11-22 03:23:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:42,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:42,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:23:42,612 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) [2024-11-22 03:23:42,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 03:23:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:42,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:23:42,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:23:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 03:23:42,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:23:42,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765064835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:42,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:23:42,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-22 03:23:42,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83874455] [2024-11-22 03:23:42,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:42,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:23:42,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:42,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:23:42,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:42,826 INFO L87 Difference]: Start difference. First operand 13175 states and 20034 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-22 03:23:43,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:43,774 INFO L93 Difference]: Finished difference Result 34819 states and 51847 transitions. [2024-11-22 03:23:43,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:23:43,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 144 [2024-11-22 03:23:43,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:43,848 INFO L225 Difference]: With dead ends: 34819 [2024-11-22 03:23:43,849 INFO L226 Difference]: Without dead ends: 23781 [2024-11-22 03:23:43,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:43,874 INFO L432 NwaCegarLoop]: 4144 mSDtfsCounter, 4057 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4057 SdHoareTripleChecker+Valid, 4305 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:43,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4057 Valid, 4305 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:23:43,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23781 states. [2024-11-22 03:23:44,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23781 to 23571. [2024-11-22 03:23:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23571 states, 19814 states have (on average 1.4428686787120217) internal successors, (28589), 20541 states have internal predecessors, (28589), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1886 states have return successors, (4542), 1863 states have call predecessors, (4542), 1869 states have call successors, (4542) [2024-11-22 03:23:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23571 states to 23571 states and 35000 transitions. [2024-11-22 03:23:44,725 INFO L78 Accepts]: Start accepts. Automaton has 23571 states and 35000 transitions. Word has length 144 [2024-11-22 03:23:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:44,727 INFO L471 AbstractCegarLoop]: Abstraction has 23571 states and 35000 transitions. [2024-11-22 03:23:44,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-22 03:23:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 23571 states and 35000 transitions. [2024-11-22 03:23:44,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-22 03:23:44,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:44,777 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:23:44,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 03:23:44,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:44,978 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:44,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:44,979 INFO L85 PathProgramCache]: Analyzing trace with hash 663714365, now seen corresponding path program 1 times [2024-11-22 03:23:44,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:44,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942400825] [2024-11-22 03:23:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:44,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-22 03:23:45,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:45,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942400825] [2024-11-22 03:23:45,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942400825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:23:45,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046395138] [2024-11-22 03:23:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:45,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:45,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:23:45,049 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) [2024-11-22 03:23:45,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 03:23:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:45,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:23:45,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:23:45,202 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 03:23:45,204 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:23:45,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046395138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:45,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:23:45,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 03:23:45,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698181668] [2024-11-22 03:23:45,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:45,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:23:45,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:45,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:23:45,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:45,206 INFO L87 Difference]: Start difference. First operand 23571 states and 35000 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-22 03:23:45,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:45,943 INFO L93 Difference]: Finished difference Result 37553 states and 55799 transitions. [2024-11-22 03:23:45,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:23:45,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 162 [2024-11-22 03:23:45,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:46,015 INFO L225 Difference]: With dead ends: 37553 [2024-11-22 03:23:46,015 INFO L226 Difference]: Without dead ends: 20609 [2024-11-22 03:23:46,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:46,062 INFO L432 NwaCegarLoop]: 4141 mSDtfsCounter, 4093 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4093 SdHoareTripleChecker+Valid, 4175 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:46,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4093 Valid, 4175 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:23:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20609 states. [2024-11-22 03:23:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20609 to 15617. [2024-11-22 03:23:46,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15617 states, 13452 states have (on average 1.4285608088016652) internal successors, (19217), 13685 states have internal predecessors, (19217), 1161 states have call successors, (1161), 794 states have call predecessors, (1161), 1002 states have return successors, (1920), 1153 states have call predecessors, (1920), 1161 states have call successors, (1920) [2024-11-22 03:23:46,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15617 states to 15617 states and 22298 transitions. [2024-11-22 03:23:46,748 INFO L78 Accepts]: Start accepts. Automaton has 15617 states and 22298 transitions. Word has length 162 [2024-11-22 03:23:46,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:46,749 INFO L471 AbstractCegarLoop]: Abstraction has 15617 states and 22298 transitions. [2024-11-22 03:23:46,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-22 03:23:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 15617 states and 22298 transitions. [2024-11-22 03:23:46,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-22 03:23:46,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:46,772 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:23:46,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 03:23:46,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:46,977 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:46,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:46,978 INFO L85 PathProgramCache]: Analyzing trace with hash -781315429, now seen corresponding path program 1 times [2024-11-22 03:23:46,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:46,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732414843] [2024-11-22 03:23:46,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:46,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-22 03:23:47,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:47,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732414843] [2024-11-22 03:23:47,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732414843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:23:47,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997588636] [2024-11-22 03:23:47,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:47,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:47,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:23:47,052 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) [2024-11-22 03:23:47,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 03:23:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:47,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 03:23:47,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:23:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-22 03:23:47,177 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:23:47,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997588636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:47,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:23:47,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 03:23:47,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820870809] [2024-11-22 03:23:47,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:47,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:23:47,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:47,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:23:47,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:47,181 INFO L87 Difference]: Start difference. First operand 15617 states and 22298 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-22 03:23:47,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:47,972 INFO L93 Difference]: Finished difference Result 25918 states and 36209 transitions. [2024-11-22 03:23:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:23:47,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 162 [2024-11-22 03:23:47,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:48,040 INFO L225 Difference]: With dead ends: 25918 [2024-11-22 03:23:48,041 INFO L226 Difference]: Without dead ends: 16573 [2024-11-22 03:23:48,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:48,068 INFO L432 NwaCegarLoop]: 4179 mSDtfsCounter, 4088 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4347 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:48,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4347 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:23:48,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16573 states. [2024-11-22 03:23:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16573 to 16507. [2024-11-22 03:23:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16507 states, 14254 states have (on average 1.4027641363827696) internal successors, (19995), 14487 states have internal predecessors, (19995), 1183 states have call successors, (1183), 860 states have call predecessors, (1183), 1068 states have return successors, (2008), 1175 states have call predecessors, (2008), 1183 states have call successors, (2008) [2024-11-22 03:23:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16507 states to 16507 states and 23186 transitions. [2024-11-22 03:23:48,979 INFO L78 Accepts]: Start accepts. Automaton has 16507 states and 23186 transitions. Word has length 162 [2024-11-22 03:23:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:48,980 INFO L471 AbstractCegarLoop]: Abstraction has 16507 states and 23186 transitions. [2024-11-22 03:23:48,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-22 03:23:48,980 INFO L276 IsEmpty]: Start isEmpty. Operand 16507 states and 23186 transitions. [2024-11-22 03:23:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-22 03:23:49,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:49,003 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:23:49,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 03:23:49,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 03:23:49,204 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:49,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:49,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2057783295, now seen corresponding path program 1 times [2024-11-22 03:23:49,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:49,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238805028] [2024-11-22 03:23:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:49,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-22 03:23:49,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:49,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238805028] [2024-11-22 03:23:49,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238805028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:23:49,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614199084] [2024-11-22 03:23:49,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:49,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:49,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:23:49,294 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) [2024-11-22 03:23:49,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 03:23:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:49,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:23:49,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:23:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 03:23:49,506 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:23:49,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614199084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:49,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:23:49,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 03:23:49,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336721050] [2024-11-22 03:23:49,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:49,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:23:49,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:49,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:23:49,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:49,508 INFO L87 Difference]: Start difference. First operand 16507 states and 23186 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-22 03:23:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:50,251 INFO L93 Difference]: Finished difference Result 44335 states and 60932 transitions. [2024-11-22 03:23:50,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:23:50,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 163 [2024-11-22 03:23:50,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:50,358 INFO L225 Difference]: With dead ends: 44335 [2024-11-22 03:23:50,358 INFO L226 Difference]: Without dead ends: 29967 [2024-11-22 03:23:50,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:50,512 INFO L432 NwaCegarLoop]: 4298 mSDtfsCounter, 143 mSDsluCounter, 4136 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 8434 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:50,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 8434 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:23:50,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29967 states. [2024-11-22 03:23:51,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29967 to 29921. [2024-11-22 03:23:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29921 states, 25598 states have (on average 1.357801390733651) internal successors, (34757), 26063 states have internal predecessors, (34757), 2245 states have call successors, (2245), 1660 states have call predecessors, (2245), 2076 states have return successors, (4342), 2229 states have call predecessors, (4342), 2245 states have call successors, (4342) [2024-11-22 03:23:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29921 states to 29921 states and 41344 transitions. [2024-11-22 03:23:51,645 INFO L78 Accepts]: Start accepts. Automaton has 29921 states and 41344 transitions. Word has length 163 [2024-11-22 03:23:51,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:51,645 INFO L471 AbstractCegarLoop]: Abstraction has 29921 states and 41344 transitions. [2024-11-22 03:23:51,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-22 03:23:51,646 INFO L276 IsEmpty]: Start isEmpty. Operand 29921 states and 41344 transitions. [2024-11-22 03:23:51,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-22 03:23:51,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:51,685 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:23:51,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 03:23:51,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:51,889 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:51,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:51,890 INFO L85 PathProgramCache]: Analyzing trace with hash 373119872, now seen corresponding path program 1 times [2024-11-22 03:23:51,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:51,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059022064] [2024-11-22 03:23:51,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:51,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-22 03:23:51,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:51,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059022064] [2024-11-22 03:23:51,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059022064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:23:51,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096617520] [2024-11-22 03:23:51,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:51,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:51,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:23:51,962 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 03:23:51,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 03:23:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:52,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:23:52,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:23:52,119 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 03:23:52,119 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:23:52,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096617520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:52,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:23:52,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 03:23:52,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709317810] [2024-11-22 03:23:52,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:52,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:23:52,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:52,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:23:52,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:52,122 INFO L87 Difference]: Start difference. First operand 29921 states and 41344 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-22 03:23:53,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:53,494 INFO L93 Difference]: Finished difference Result 59057 states and 82562 transitions. [2024-11-22 03:23:53,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:23:53,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 163 [2024-11-22 03:23:53,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:53,626 INFO L225 Difference]: With dead ends: 59057 [2024-11-22 03:23:53,627 INFO L226 Difference]: Without dead ends: 31275 [2024-11-22 03:23:53,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:53,707 INFO L432 NwaCegarLoop]: 4135 mSDtfsCounter, 4070 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4070 SdHoareTripleChecker+Valid, 4168 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:53,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4070 Valid, 4168 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:23:53,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31275 states. [2024-11-22 03:23:55,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31275 to 31231. [2024-11-22 03:23:55,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31231 states, 26848 states have (on average 1.3161874255065553) internal successors, (35337), 27313 states have internal predecessors, (35337), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 2136 states have return successors, (4298), 2229 states have call predecessors, (4298), 2245 states have call successors, (4298) [2024-11-22 03:23:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31231 states to 31231 states and 41880 transitions. [2024-11-22 03:23:55,232 INFO L78 Accepts]: Start accepts. Automaton has 31231 states and 41880 transitions. Word has length 163 [2024-11-22 03:23:55,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:23:55,232 INFO L471 AbstractCegarLoop]: Abstraction has 31231 states and 41880 transitions. [2024-11-22 03:23:55,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-22 03:23:55,233 INFO L276 IsEmpty]: Start isEmpty. Operand 31231 states and 41880 transitions. [2024-11-22 03:23:55,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-22 03:23:55,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:23:55,269 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:23:55,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 03:23:55,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:55,470 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:23:55,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:23:55,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1412929672, now seen corresponding path program 1 times [2024-11-22 03:23:55,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:23:55,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856921949] [2024-11-22 03:23:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:55,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:23:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-22 03:23:55,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:23:55,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856921949] [2024-11-22 03:23:55,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856921949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:23:55,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278336790] [2024-11-22 03:23:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:23:55,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:23:55,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:23:55,557 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 03:23:55,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 03:23:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:23:55,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 03:23:55,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:23:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-22 03:23:55,674 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:23:55,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278336790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:23:55,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:23:55,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 03:23:55,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867776379] [2024-11-22 03:23:55,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:23:55,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:23:55,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:23:55,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:23:55,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:55,676 INFO L87 Difference]: Start difference. First operand 31231 states and 41880 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-22 03:23:58,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:23:58,033 INFO L93 Difference]: Finished difference Result 86537 states and 115588 transitions. [2024-11-22 03:23:58,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:23:58,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 164 [2024-11-22 03:23:58,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:23:58,248 INFO L225 Difference]: With dead ends: 86537 [2024-11-22 03:23:58,248 INFO L226 Difference]: Without dead ends: 57453 [2024-11-22 03:23:58,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:23:58,310 INFO L432 NwaCegarLoop]: 4167 mSDtfsCounter, 4096 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4096 SdHoareTripleChecker+Valid, 4330 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:23:58,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4096 Valid, 4330 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:23:58,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57453 states. [2024-11-22 03:24:01,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57453 to 55939. [2024-11-22 03:24:01,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55939 states, 47624 states have (on average 1.2828195867629766) internal successors, (61093), 48553 states have internal predecessors, (61093), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 4048 states have return successors, (9648), 4233 states have call predecessors, (9648), 4265 states have call successors, (9648) [2024-11-22 03:24:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55939 states to 55939 states and 75006 transitions. [2024-11-22 03:24:01,223 INFO L78 Accepts]: Start accepts. Automaton has 55939 states and 75006 transitions. Word has length 164 [2024-11-22 03:24:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:24:01,224 INFO L471 AbstractCegarLoop]: Abstraction has 55939 states and 75006 transitions. [2024-11-22 03:24:01,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-22 03:24:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 55939 states and 75006 transitions. [2024-11-22 03:24:01,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-22 03:24:01,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:24:01,296 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:24:01,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 03:24:01,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 03:24:01,498 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:24:01,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:24:01,498 INFO L85 PathProgramCache]: Analyzing trace with hash 17281842, now seen corresponding path program 1 times [2024-11-22 03:24:01,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:24:01,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352449311] [2024-11-22 03:24:01,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:24:01,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:24:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:24:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-22 03:24:01,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:24:01,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352449311] [2024-11-22 03:24:01,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352449311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 03:24:01,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341519420] [2024-11-22 03:24:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:24:01,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 03:24:01,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 03:24:01,554 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 03:24:01,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 03:24:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:24:01,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 03:24:01,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 03:24:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 03:24:01,653 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 03:24:01,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341519420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:24:01,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 03:24:01,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 03:24:01,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193123745] [2024-11-22 03:24:01,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:24:01,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:24:01,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:24:01,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:24:01,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:24:01,655 INFO L87 Difference]: Start difference. First operand 55939 states and 75006 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-22 03:24:03,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 03:24:03,839 INFO L93 Difference]: Finished difference Result 96687 states and 128416 transitions. [2024-11-22 03:24:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 03:24:03,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 164 [2024-11-22 03:24:03,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 03:24:04,074 INFO L225 Difference]: With dead ends: 96687 [2024-11-22 03:24:04,074 INFO L226 Difference]: Without dead ends: 55941 [2024-11-22 03:24:04,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 03:24:04,178 INFO L432 NwaCegarLoop]: 4274 mSDtfsCounter, 148 mSDsluCounter, 4130 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 8404 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 03:24:04,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 8404 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 03:24:04,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55941 states. [2024-11-22 03:24:06,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55941 to 55939. [2024-11-22 03:24:06,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55939 states, 47624 states have (on average 1.2752603729212162) internal successors, (60733), 48553 states have internal predecessors, (60733), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 4048 states have return successors, (9288), 4233 states have call predecessors, (9288), 4265 states have call successors, (9288) [2024-11-22 03:24:06,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55939 states to 55939 states and 74286 transitions. [2024-11-22 03:24:06,961 INFO L78 Accepts]: Start accepts. Automaton has 55939 states and 74286 transitions. Word has length 164 [2024-11-22 03:24:06,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 03:24:06,962 INFO L471 AbstractCegarLoop]: Abstraction has 55939 states and 74286 transitions. [2024-11-22 03:24:06,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-22 03:24:06,962 INFO L276 IsEmpty]: Start isEmpty. Operand 55939 states and 74286 transitions. [2024-11-22 03:24:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-22 03:24:07,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 03:24:07,028 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 03:24:07,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 03:24:07,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 03:24:07,229 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 03:24:07,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 03:24:07,229 INFO L85 PathProgramCache]: Analyzing trace with hash -955807414, now seen corresponding path program 1 times [2024-11-22 03:24:07,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 03:24:07,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417722018] [2024-11-22 03:24:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 03:24:07,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 03:24:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 03:24:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-22 03:24:07,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 03:24:07,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417722018] [2024-11-22 03:24:07,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417722018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 03:24:07,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 03:24:07,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 03:24:07,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160506813] [2024-11-22 03:24:07,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 03:24:07,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 03:24:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 03:24:07,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 03:24:07,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 03:24:07,267 INFO L87 Difference]: Start difference. First operand 55939 states and 74286 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)