./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.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 6b2ea308b98ca1eae9030e7a6017fcc5084f411cde9353ed6e1419a4046239c4 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 16:35:40,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:35:40,299 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:35:40,305 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:35:40,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:35:40,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:35:40,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:35:40,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:35:40,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:35:40,333 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:35:40,333 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:35:40,333 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:35:40,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:35:40,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:35:40,337 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:35:40,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:35:40,337 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:35:40,337 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:35:40,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:35:40,338 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:35:40,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:35:40,339 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:35:40,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:35:40,339 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:35:40,339 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:35:40,339 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:35:40,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:35:40,340 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:35:40,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:35:40,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:35:40,340 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:35:40,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:35:40,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:35:40,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:35:40,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:35:40,341 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:35:40,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:35:40,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:35:40,341 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:35:40,341 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:35:40,341 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:35:40,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:35:40,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b2ea308b98ca1eae9030e7a6017fcc5084f411cde9353ed6e1419a4046239c4 [2024-11-08 16:35:40,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:35:40,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:35:40,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:35:40,637 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:35:40,637 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:35:40,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-1.c [2024-11-08 16:35:41,958 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:35:42,435 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:35:42,436 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-1.c [2024-11-08 16:35:42,480 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a1061fc6/800ea8843ff24f2087c49b6e1243fce1/FLAGd7b88bf65 [2024-11-08 16:35:42,521 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a1061fc6/800ea8843ff24f2087c49b6e1243fce1 [2024-11-08 16:35:42,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:35:42,524 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:35:42,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:35:42,526 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:35:42,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:35:42,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:35:42" (1/1) ... [2024-11-08 16:35:42,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7750aaf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:42, skipping insertion in model container [2024-11-08 16:35:42,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:35:42" (1/1) ... [2024-11-08 16:35:42,737 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:35:43,849 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_label46+token_ring.04.cil-1.c[382357,382370] [2024-11-08 16:35:43,868 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_label46+token_ring.04.cil-1.c[383339,383352] [2024-11-08 16:35:44,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:35:44,041 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:35:44,574 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_label46+token_ring.04.cil-1.c[382357,382370] [2024-11-08 16:35:44,578 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_label46+token_ring.04.cil-1.c[383339,383352] [2024-11-08 16:35:44,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:35:44,642 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:35:44,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44 WrapperNode [2024-11-08 16:35:44,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:35:44,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:35:44,644 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:35:44,644 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:35:44,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44" (1/1) ... [2024-11-08 16:35:44,776 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44" (1/1) ... [2024-11-08 16:35:45,139 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12753 [2024-11-08 16:35:45,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:35:45,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:35:45,141 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:35:45,141 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:35:45,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44" (1/1) ... [2024-11-08 16:35:45,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44" (1/1) ... [2024-11-08 16:35:45,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44" (1/1) ... [2024-11-08 16:35:45,348 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]. [2024-11-08 16:35:45,348 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44" (1/1) ... [2024-11-08 16:35:45,348 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44" (1/1) ... [2024-11-08 16:35:45,457 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44" (1/1) ... [2024-11-08 16:35:45,494 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44" (1/1) ... [2024-11-08 16:35:45,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44" (1/1) ... [2024-11-08 16:35:45,531 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44" (1/1) ... [2024-11-08 16:35:45,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:35:45,597 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:35:45,597 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:35:45,597 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:35:45,598 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44" (1/1) ... [2024-11-08 16:35:45,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:35:45,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:35:45,632 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) [2024-11-08 16:35:45,641 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 [2024-11-08 16:35:45,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:35:45,678 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-08 16:35:45,678 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-08 16:35:45,678 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-08 16:35:45,679 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-08 16:35:45,679 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-08 16:35:45,680 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-08 16:35:45,680 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-08 16:35:45,680 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-08 16:35:45,680 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-08 16:35:45,680 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-08 16:35:45,680 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-08 16:35:45,680 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-08 16:35:45,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:35:45,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:35:45,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:35:45,767 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:35:45,769 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:35:52,479 INFO L? ?]: Removed 1707 outVars from TransFormulas that were not future-live. [2024-11-08 16:35:52,479 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:35:52,536 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:35:52,536 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-08 16:35:52,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:35:52 BoogieIcfgContainer [2024-11-08 16:35:52,537 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:35:52,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:35:52,540 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:35:52,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:35:52,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:35:42" (1/3) ... [2024-11-08 16:35:52,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f1c55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:35:52, skipping insertion in model container [2024-11-08 16:35:52,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:44" (2/3) ... [2024-11-08 16:35:52,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f1c55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:35:52, skipping insertion in model container [2024-11-08 16:35:52,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:35:52" (3/3) ... [2024-11-08 16:35:52,546 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.04.cil-1.c [2024-11-08 16:35:52,558 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:35:52,559 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:35:52,635 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:35:52,640 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;@45a2ca22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:35:52,640 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:35:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 2370 states, 2343 states have (on average 1.8523260776781905) internal successors, (4340), 2346 states have internal predecessors, (4340), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-08 16:35:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 16:35:52,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:52,668 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:52,669 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:52,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:52,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1995785756, now seen corresponding path program 1 times [2024-11-08 16:35:52,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:52,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992976407] [2024-11-08 16:35:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:52,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:53,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:35:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:53,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:35:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:53,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 16:35:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:53,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 16:35:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:53,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 16:35:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:53,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:53,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992976407] [2024-11-08 16:35:53,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992976407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:53,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:53,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 16:35:53,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909953976] [2024-11-08 16:35:53,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:53,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:35:53,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:53,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:35:53,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:35:53,132 INFO L87 Difference]: Start difference. First operand has 2370 states, 2343 states have (on average 1.8523260776781905) internal successors, (4340), 2346 states have internal predecessors, (4340), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:35:53,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:53,831 INFO L93 Difference]: Finished difference Result 4788 states and 8834 transitions. [2024-11-08 16:35:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:35:53,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2024-11-08 16:35:53,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:53,860 INFO L225 Difference]: With dead ends: 4788 [2024-11-08 16:35:53,861 INFO L226 Difference]: Without dead ends: 2357 [2024-11-08 16:35:53,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:35:53,873 INFO L432 NwaCegarLoop]: 4199 mSDtfsCounter, 443 mSDsluCounter, 12267 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 16466 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:35:53,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 16466 Invalid, 460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 16:35:53,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2024-11-08 16:35:53,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2303. [2024-11-08 16:35:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2303 states, 2277 states have (on average 1.8414580588493632) internal successors, (4193), 2279 states have internal predecessors, (4193), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-08 16:35:54,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 4229 transitions. [2024-11-08 16:35:54,031 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 4229 transitions. Word has length 90 [2024-11-08 16:35:54,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:35:54,031 INFO L471 AbstractCegarLoop]: Abstraction has 2303 states and 4229 transitions. [2024-11-08 16:35:54,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:35:54,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 4229 transitions. [2024-11-08 16:35:54,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 16:35:54,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:54,042 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:54,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:35:54,043 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:54,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:54,043 INFO L85 PathProgramCache]: Analyzing trace with hash -937947678, now seen corresponding path program 1 times [2024-11-08 16:35:54,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:54,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953158396] [2024-11-08 16:35:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:54,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:54,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:35:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:54,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:35:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:54,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 16:35:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:54,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 16:35:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:54,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 16:35:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:54,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:54,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953158396] [2024-11-08 16:35:54,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953158396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:54,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:54,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:35:54,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615035762] [2024-11-08 16:35:54,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:54,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:35:54,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:54,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:35:54,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:35:54,264 INFO L87 Difference]: Start difference. First operand 2303 states and 4229 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:35:55,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:55,257 INFO L93 Difference]: Finished difference Result 2753 states and 4926 transitions. [2024-11-08 16:35:55,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:35:55,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 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 90 [2024-11-08 16:35:55,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:55,273 INFO L225 Difference]: With dead ends: 2753 [2024-11-08 16:35:55,273 INFO L226 Difference]: Without dead ends: 2583 [2024-11-08 16:35:55,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:35:55,277 INFO L432 NwaCegarLoop]: 4116 mSDtfsCounter, 4603 mSDsluCounter, 12334 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 16450 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:35:55,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4614 Valid, 16450 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 16:35:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2024-11-08 16:35:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2476. [2024-11-08 16:35:55,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 2430 states have (on average 1.8213991769547324) internal successors, (4426), 2433 states have internal predecessors, (4426), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2024-11-08 16:35:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 4491 transitions. [2024-11-08 16:35:55,362 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 4491 transitions. Word has length 90 [2024-11-08 16:35:55,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:35:55,362 INFO L471 AbstractCegarLoop]: Abstraction has 2476 states and 4491 transitions. [2024-11-08 16:35:55,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:35:55,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 4491 transitions. [2024-11-08 16:35:55,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 16:35:55,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:55,367 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:55,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:35:55,367 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:55,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:55,368 INFO L85 PathProgramCache]: Analyzing trace with hash -2112607130, now seen corresponding path program 1 times [2024-11-08 16:35:55,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:55,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028678460] [2024-11-08 16:35:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:55,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:55,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:35:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:55,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:35:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:55,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 16:35:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:55,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 16:35:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:55,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 16:35:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:55,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:55,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028678460] [2024-11-08 16:35:55,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028678460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:55,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:55,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:35:55,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005866777] [2024-11-08 16:35:55,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:55,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:35:55,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:55,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:35:55,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:35:55,563 INFO L87 Difference]: Start difference. First operand 2476 states and 4491 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:35:56,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:56,918 INFO L93 Difference]: Finished difference Result 3156 states and 5538 transitions. [2024-11-08 16:35:56,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:35:56,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 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 90 [2024-11-08 16:35:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:56,928 INFO L225 Difference]: With dead ends: 3156 [2024-11-08 16:35:56,929 INFO L226 Difference]: Without dead ends: 2813 [2024-11-08 16:35:56,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 16:35:56,932 INFO L432 NwaCegarLoop]: 4231 mSDtfsCounter, 4606 mSDsluCounter, 16725 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 20956 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:35:56,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 20956 Invalid, 1524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 16:35:56,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2024-11-08 16:35:57,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2638. [2024-11-08 16:35:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2638 states, 2572 states have (on average 1.802877138413686) internal successors, (4637), 2576 states have internal predecessors, (4637), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2024-11-08 16:35:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2638 states to 2638 states and 4730 transitions. [2024-11-08 16:35:57,043 INFO L78 Accepts]: Start accepts. Automaton has 2638 states and 4730 transitions. Word has length 90 [2024-11-08 16:35:57,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:35:57,044 INFO L471 AbstractCegarLoop]: Abstraction has 2638 states and 4730 transitions. [2024-11-08 16:35:57,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:35:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2638 states and 4730 transitions. [2024-11-08 16:35:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 16:35:57,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:57,046 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:57,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:35:57,046 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:57,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:57,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1225384284, now seen corresponding path program 1 times [2024-11-08 16:35:57,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:57,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473279797] [2024-11-08 16:35:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:57,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:57,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:35:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:57,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:35:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:57,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 16:35:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:57,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 16:35:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:57,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 16:35:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:57,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:57,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473279797] [2024-11-08 16:35:57,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473279797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:57,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:57,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:35:57,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835407563] [2024-11-08 16:35:57,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:57,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:35:57,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:57,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:35:57,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:35:57,197 INFO L87 Difference]: Start difference. First operand 2638 states and 4730 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:35:58,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:58,461 INFO L93 Difference]: Finished difference Result 3749 states and 6435 transitions. [2024-11-08 16:35:58,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:35:58,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 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 90 [2024-11-08 16:35:58,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:58,473 INFO L225 Difference]: With dead ends: 3749 [2024-11-08 16:35:58,473 INFO L226 Difference]: Without dead ends: 3244 [2024-11-08 16:35:58,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 16:35:58,477 INFO L432 NwaCegarLoop]: 4126 mSDtfsCounter, 4654 mSDsluCounter, 16435 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4665 SdHoareTripleChecker+Valid, 20561 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:35:58,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4665 Valid, 20561 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 16:35:58,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2024-11-08 16:35:58,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 2963. [2024-11-08 16:35:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 2857 states have (on average 1.7710885544277213) internal successors, (5060), 2863 states have internal predecessors, (5060), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2024-11-08 16:35:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 5213 transitions. [2024-11-08 16:35:58,549 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 5213 transitions. Word has length 90 [2024-11-08 16:35:58,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:35:58,549 INFO L471 AbstractCegarLoop]: Abstraction has 2963 states and 5213 transitions. [2024-11-08 16:35:58,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:35:58,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 5213 transitions. [2024-11-08 16:35:58,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 16:35:58,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:58,554 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:35:58,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:35:58,554 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:58,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1158540454, now seen corresponding path program 1 times [2024-11-08 16:35:58,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:58,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493038687] [2024-11-08 16:35:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:58,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:58,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:35:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:58,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:35:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:58,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 16:35:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:58,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 16:35:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:58,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 16:35:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:35:58,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:58,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493038687] [2024-11-08 16:35:58,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493038687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:58,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:58,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:35:58,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380710590] [2024-11-08 16:35:58,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:58,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:35:58,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:58,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:35:58,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:35:58,701 INFO L87 Difference]: Start difference. First operand 2963 states and 5213 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:35:59,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:59,892 INFO L93 Difference]: Finished difference Result 4894 states and 8162 transitions. [2024-11-08 16:35:59,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:35:59,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 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 90 [2024-11-08 16:35:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:59,906 INFO L225 Difference]: With dead ends: 4894 [2024-11-08 16:35:59,907 INFO L226 Difference]: Without dead ends: 4064 [2024-11-08 16:35:59,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 16:35:59,910 INFO L432 NwaCegarLoop]: 4229 mSDtfsCounter, 4604 mSDsluCounter, 16725 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4615 SdHoareTripleChecker+Valid, 20954 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:35:59,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4615 Valid, 20954 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:35:59,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2024-11-08 16:35:59,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 3614. [2024-11-08 16:35:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3614 states, 3428 states have (on average 1.7228704784130688) internal successors, (5906), 3438 states have internal predecessors, (5906), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2024-11-08 16:36:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 6185 transitions. [2024-11-08 16:36:00,004 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 6185 transitions. Word has length 90 [2024-11-08 16:36:00,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:36:00,004 INFO L471 AbstractCegarLoop]: Abstraction has 3614 states and 6185 transitions. [2024-11-08 16:36:00,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:36:00,005 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 6185 transitions. [2024-11-08 16:36:00,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 16:36:00,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:00,007 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:00,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:36:00,007 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:36:00,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:00,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1235441252, now seen corresponding path program 1 times [2024-11-08 16:36:00,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:00,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050922732] [2024-11-08 16:36:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:00,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:00,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:36:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:00,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:36:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:00,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 16:36:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:00,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 16:36:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:00,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 16:36:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:00,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:00,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050922732] [2024-11-08 16:36:00,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050922732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:00,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:36:00,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:36:00,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046297961] [2024-11-08 16:36:00,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:00,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:36:00,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:00,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:36:00,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:36:00,138 INFO L87 Difference]: Start difference. First operand 3614 states and 6185 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:36:01,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:36:01,422 INFO L93 Difference]: Finished difference Result 7696 states and 12390 transitions. [2024-11-08 16:36:01,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:36:01,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 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 90 [2024-11-08 16:36:01,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:36:01,447 INFO L225 Difference]: With dead ends: 7696 [2024-11-08 16:36:01,447 INFO L226 Difference]: Without dead ends: 6215 [2024-11-08 16:36:01,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:36:01,455 INFO L432 NwaCegarLoop]: 4227 mSDtfsCounter, 4774 mSDsluCounter, 16717 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4790 SdHoareTripleChecker+Valid, 20944 SdHoareTripleChecker+Invalid, 1483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:36:01,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4790 Valid, 20944 Invalid, 1483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:36:01,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2024-11-08 16:36:01,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 4906. [2024-11-08 16:36:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4906 states, 4568 states have (on average 1.665061295971979) internal successors, (7606), 4586 states have internal predecessors, (7606), 218 states have call successors, (218), 102 states have call predecessors, (218), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2024-11-08 16:36:01,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4906 states to 4906 states and 8139 transitions. [2024-11-08 16:36:01,710 INFO L78 Accepts]: Start accepts. Automaton has 4906 states and 8139 transitions. Word has length 90 [2024-11-08 16:36:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:36:01,711 INFO L471 AbstractCegarLoop]: Abstraction has 4906 states and 8139 transitions. [2024-11-08 16:36:01,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:36:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4906 states and 8139 transitions. [2024-11-08 16:36:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 16:36:01,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:01,715 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:01,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:36:01,715 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:36:01,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:01,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1151068254, now seen corresponding path program 1 times [2024-11-08 16:36:01,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:01,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076264080] [2024-11-08 16:36:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:01,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:36:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:36:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 16:36:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 16:36:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 16:36:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:01,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:01,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076264080] [2024-11-08 16:36:01,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076264080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:01,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:36:01,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:36:01,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422093401] [2024-11-08 16:36:01,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:01,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:36:01,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:01,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:36:01,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:36:01,836 INFO L87 Difference]: Start difference. First operand 4906 states and 8139 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:36:03,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:36:03,317 INFO L93 Difference]: Finished difference Result 12534 states and 19766 transitions. [2024-11-08 16:36:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:36:03,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 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 90 [2024-11-08 16:36:03,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:36:03,352 INFO L225 Difference]: With dead ends: 12534 [2024-11-08 16:36:03,353 INFO L226 Difference]: Without dead ends: 9761 [2024-11-08 16:36:03,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:36:03,363 INFO L432 NwaCegarLoop]: 4226 mSDtfsCounter, 4631 mSDsluCounter, 16714 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4641 SdHoareTripleChecker+Valid, 20940 SdHoareTripleChecker+Invalid, 1717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:36:03,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4641 Valid, 20940 Invalid, 1717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 16:36:03,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2024-11-08 16:36:03,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 7399. [2024-11-08 16:36:03,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7399 states, 6765 states have (on average 1.608277900960828) internal successors, (10880), 6799 states have internal predecessors, (10880), 402 states have call successors, (402), 198 states have call predecessors, (402), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2024-11-08 16:36:03,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7399 states to 7399 states and 11959 transitions. [2024-11-08 16:36:03,835 INFO L78 Accepts]: Start accepts. Automaton has 7399 states and 11959 transitions. Word has length 90 [2024-11-08 16:36:03,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:36:03,839 INFO L471 AbstractCegarLoop]: Abstraction has 7399 states and 11959 transitions. [2024-11-08 16:36:03,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:36:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 7399 states and 11959 transitions. [2024-11-08 16:36:03,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 16:36:03,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:03,848 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:03,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:36:03,849 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:36:03,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:03,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1643694428, now seen corresponding path program 1 times [2024-11-08 16:36:03,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:03,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800560135] [2024-11-08 16:36:03,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:03,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:03,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:36:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:03,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:36:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:04,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 16:36:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:04,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 16:36:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:04,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 16:36:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:04,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:04,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:04,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800560135] [2024-11-08 16:36:04,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800560135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:04,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:36:04,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:36:04,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259447004] [2024-11-08 16:36:04,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:04,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:36:04,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:04,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:36:04,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:36:04,049 INFO L87 Difference]: Start difference. First operand 7399 states and 11959 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:36:05,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:36:05,606 INFO L93 Difference]: Finished difference Result 21673 states and 33860 transitions. [2024-11-08 16:36:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:36:05,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 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 90 [2024-11-08 16:36:05,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:36:05,658 INFO L225 Difference]: With dead ends: 21673 [2024-11-08 16:36:05,658 INFO L226 Difference]: Without dead ends: 16407 [2024-11-08 16:36:05,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:36:05,675 INFO L432 NwaCegarLoop]: 4227 mSDtfsCounter, 4694 mSDsluCounter, 16717 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4710 SdHoareTripleChecker+Valid, 20944 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:36:05,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4710 Valid, 20944 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 16:36:05,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16407 states. [2024-11-08 16:36:06,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16407 to 12448. [2024-11-08 16:36:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12448 states, 11238 states have (on average 1.5634454529275672) internal successors, (17570), 11304 states have internal predecessors, (17570), 754 states have call successors, (754), 390 states have call predecessors, (754), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2024-11-08 16:36:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12448 states to 12448 states and 19871 transitions. [2024-11-08 16:36:06,432 INFO L78 Accepts]: Start accepts. Automaton has 12448 states and 19871 transitions. Word has length 90 [2024-11-08 16:36:06,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:36:06,432 INFO L471 AbstractCegarLoop]: Abstraction has 12448 states and 19871 transitions. [2024-11-08 16:36:06,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:36:06,433 INFO L276 IsEmpty]: Start isEmpty. Operand 12448 states and 19871 transitions. [2024-11-08 16:36:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 16:36:06,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:06,444 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:06,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:36:06,444 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:36:06,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:06,444 INFO L85 PathProgramCache]: Analyzing trace with hash -689754270, now seen corresponding path program 1 times [2024-11-08 16:36:06,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:06,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188456385] [2024-11-08 16:36:06,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:06,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:36:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:36:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 16:36:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 16:36:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 16:36:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:06,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:06,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188456385] [2024-11-08 16:36:06,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188456385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:06,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:36:06,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:36:06,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575455247] [2024-11-08 16:36:06,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:06,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:36:06,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:06,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:36:06,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:36:06,659 INFO L87 Difference]: Start difference. First operand 12448 states and 19871 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:36:09,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:36:09,394 INFO L93 Difference]: Finished difference Result 39568 states and 62106 transitions. [2024-11-08 16:36:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:36:09,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 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 90 [2024-11-08 16:36:09,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:36:09,505 INFO L225 Difference]: With dead ends: 39568 [2024-11-08 16:36:09,506 INFO L226 Difference]: Without dead ends: 29253 [2024-11-08 16:36:09,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:36:09,551 INFO L432 NwaCegarLoop]: 4227 mSDtfsCounter, 4654 mSDsluCounter, 16717 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4670 SdHoareTripleChecker+Valid, 20944 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:36:09,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4670 Valid, 20944 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 16:36:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29253 states. [2024-11-08 16:36:11,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29253 to 22513. [2024-11-08 16:36:11,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22513 states, 20183 states have (on average 1.5349551602834068) internal successors, (30980), 20313 states have internal predecessors, (30980), 1426 states have call successors, (1426), 774 states have call predecessors, (1426), 902 states have return successors, (3741), 1553 states have call predecessors, (3741), 1426 states have call successors, (3741) [2024-11-08 16:36:11,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22513 states to 22513 states and 36147 transitions. [2024-11-08 16:36:11,153 INFO L78 Accepts]: Start accepts. Automaton has 22513 states and 36147 transitions. Word has length 90 [2024-11-08 16:36:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:36:11,154 INFO L471 AbstractCegarLoop]: Abstraction has 22513 states and 36147 transitions. [2024-11-08 16:36:11,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:36:11,154 INFO L276 IsEmpty]: Start isEmpty. Operand 22513 states and 36147 transitions. [2024-11-08 16:36:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 16:36:11,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:11,167 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:11,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:36:11,168 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:36:11,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:11,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1905907996, now seen corresponding path program 1 times [2024-11-08 16:36:11,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:11,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035256391] [2024-11-08 16:36:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:11,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:11,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:36:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:11,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:36:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:11,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 16:36:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:11,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 16:36:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:11,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 16:36:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:11,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:11,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035256391] [2024-11-08 16:36:11,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035256391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:11,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:36:11,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:36:11,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566018319] [2024-11-08 16:36:11,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:11,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:36:11,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:11,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:36:11,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:36:11,312 INFO L87 Difference]: Start difference. First operand 22513 states and 36147 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:36:15,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:36:15,073 INFO L93 Difference]: Finished difference Result 74103 states and 118584 transitions. [2024-11-08 16:36:15,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:36:15,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 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 90 [2024-11-08 16:36:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:36:15,259 INFO L225 Difference]: With dead ends: 74103 [2024-11-08 16:36:15,259 INFO L226 Difference]: Without dead ends: 53723 [2024-11-08 16:36:15,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:36:15,320 INFO L432 NwaCegarLoop]: 4216 mSDtfsCounter, 4596 mSDsluCounter, 16702 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4606 SdHoareTripleChecker+Valid, 20918 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:36:15,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4606 Valid, 20918 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:36:15,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53723 states. [2024-11-08 16:36:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53723 to 42554. [2024-11-08 16:36:17,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42554 states, 38064 states have (on average 1.519913829340059) internal successors, (57854), 38322 states have internal predecessors, (57854), 2698 states have call successors, (2698), 1534 states have call predecessors, (2698), 1790 states have return successors, (9515), 2953 states have call predecessors, (9515), 2698 states have call successors, (9515) [2024-11-08 16:36:17,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42554 states to 42554 states and 70067 transitions. [2024-11-08 16:36:17,835 INFO L78 Accepts]: Start accepts. Automaton has 42554 states and 70067 transitions. Word has length 90 [2024-11-08 16:36:17,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:36:17,837 INFO L471 AbstractCegarLoop]: Abstraction has 42554 states and 70067 transitions. [2024-11-08 16:36:17,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:36:17,837 INFO L276 IsEmpty]: Start isEmpty. Operand 42554 states and 70067 transitions. [2024-11-08 16:36:17,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-08 16:36:17,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:17,866 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:17,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 16:36:17,867 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:36:17,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:17,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1657091874, now seen corresponding path program 1 times [2024-11-08 16:36:17,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:17,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21562560] [2024-11-08 16:36:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:17,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:36:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:36:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 16:36:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 16:36:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 16:36:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:36:17,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:17,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21562560] [2024-11-08 16:36:17,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21562560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:17,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:36:17,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:36:17,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214154306] [2024-11-08 16:36:17,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:17,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:36:17,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:17,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:36:17,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:36:17,959 INFO L87 Difference]: Start difference. First operand 42554 states and 70067 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:36:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:36:22,817 INFO L93 Difference]: Finished difference Result 116705 states and 188614 transitions. [2024-11-08 16:36:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:36:22,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 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 90 [2024-11-08 16:36:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:36:23,112 INFO L225 Difference]: With dead ends: 116705 [2024-11-08 16:36:23,112 INFO L226 Difference]: Without dead ends: 76285 [2024-11-08 16:36:23,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:36:23,491 INFO L432 NwaCegarLoop]: 4265 mSDtfsCounter, 4802 mSDsluCounter, 12442 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4831 SdHoareTripleChecker+Valid, 16707 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:36:23,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4831 Valid, 16707 Invalid, 1313 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 16:36:23,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76285 states. [2024-11-08 16:36:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76285 to 62590. [2024-11-08 16:36:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62590 states, 55776 states have (on average 1.5023666092943202) internal successors, (83796), 56291 states have internal predecessors, (83796), 4120 states have call successors, (4120), 2308 states have call predecessors, (4120), 2692 states have return successors, (13125), 4246 states have call predecessors, (13125), 4120 states have call successors, (13125) [2024-11-08 16:36:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62590 states to 62590 states and 101041 transitions. [2024-11-08 16:36:27,239 INFO L78 Accepts]: Start accepts. Automaton has 62590 states and 101041 transitions. Word has length 90 [2024-11-08 16:36:27,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:36:27,239 INFO L471 AbstractCegarLoop]: Abstraction has 62590 states and 101041 transitions. [2024-11-08 16:36:27,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:36:27,240 INFO L276 IsEmpty]: Start isEmpty. Operand 62590 states and 101041 transitions. [2024-11-08 16:36:27,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-08 16:36:27,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:27,501 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:27,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 16:36:27,502 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:36:27,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:27,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1759816949, now seen corresponding path program 1 times [2024-11-08 16:36:27,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:27,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888242588] [2024-11-08 16:36:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:27,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:27,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:36:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:27,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 16:36:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:27,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-08 16:36:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:27,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-08 16:36:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:27,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-08 16:36:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:27,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-08 16:36:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:27,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:36:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:27,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-11-08 16:36:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 16:36:27,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:27,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888242588] [2024-11-08 16:36:27,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888242588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:27,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198804111] [2024-11-08 16:36:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:27,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:27,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:36:27,759 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) [2024-11-08 16:36:27,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:36:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:27,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:36:27,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:27,971 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 16:36:27,973 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:36:27,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198804111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:27,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:36:27,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-08 16:36:27,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889845810] [2024-11-08 16:36:27,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:27,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:36:27,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:27,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:36:27,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:36:27,975 INFO L87 Difference]: Start difference. First operand 62590 states and 101041 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, (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) [2024-11-08 16:36:33,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:36:33,429 INFO L93 Difference]: Finished difference Result 182123 states and 294551 transitions. [2024-11-08 16:36:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:36:33,433 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, (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 147 [2024-11-08 16:36:33,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted.