./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-2.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.03.cil-2.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 81b1f0d7bc9c0822a8207cacf976d5f28113ec35347c6e8d0beebb39e2d17414 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 16:35:34,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:35:34,900 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:35:34,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:35:34,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:35:34,934 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:35:34,935 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:35:34,936 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:35:34,937 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:35:34,938 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:35:34,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:35:34,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:35:34,939 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:35:34,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:35:34,941 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:35:34,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:35:34,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:35:34,942 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:35:34,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:35:34,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:35:34,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:35:34,947 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:35:34,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:35:34,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:35:34,948 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:35:34,948 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:35:34,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:35:34,949 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:35:34,949 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:35:34,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:35:34,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:35:34,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:35:34,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:35:34,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:35:34,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:35:34,951 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:35:34,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:35:34,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:35:34,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:35:34,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:35:34,952 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:35:34,954 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:35:34,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81b1f0d7bc9c0822a8207cacf976d5f28113ec35347c6e8d0beebb39e2d17414 [2024-11-08 16:35:35,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:35:35,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:35:35,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:35:35,235 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:35:35,236 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:35:35,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-2.c [2024-11-08 16:35:36,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:35:37,384 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:35:37,385 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.03.cil-2.c [2024-11-08 16:35:37,430 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/037b9c038/0e6e6c32c9cd4350bb0019e265354bff/FLAGdae9a67d8 [2024-11-08 16:35:37,814 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/037b9c038/0e6e6c32c9cd4350bb0019e265354bff [2024-11-08 16:35:37,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:35:37,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:35:37,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:35:37,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:35:37,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:35:37,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f95ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:37, skipping insertion in model container [2024-11-08 16:35:37,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:35:37" (1/1) ... [2024-11-08 16:35:37,999 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:35:39,587 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.03.cil-2.c[382357,382370] [2024-11-08 16:35:39,610 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.03.cil-2.c[383339,383352] [2024-11-08 16:35:39,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:35:39,773 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:35:40,578 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.03.cil-2.c[382357,382370] [2024-11-08 16:35:40,585 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.03.cil-2.c[383339,383352] [2024-11-08 16:35:40,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:35:40,653 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:35:40,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40 WrapperNode [2024-11-08 16:35:40,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:35:40,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:35:40,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:35:40,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:35:40,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:40,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:41,201 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12693 [2024-11-08 16:35:41,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:35:41,203 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:35:41,203 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:35:41,203 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:35:41,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:41,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:41,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:41,353 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 16:35:41,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:41,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:41,482 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:41,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:41,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:41,689 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:41,762 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:35:41,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:35:41,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:35:41,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:35:41,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40" (1/1) ... [2024-11-08 16:35:41,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:35:41,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:35:41,802 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 16:35:41,806 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 16:35:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:35:41,846 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-08 16:35:41,846 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-08 16:35:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-08 16:35:41,847 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-08 16:35:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-08 16:35:41,847 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-08 16:35:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-08 16:35:41,847 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-08 16:35:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-08 16:35:41,847 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-08 16:35:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-08 16:35:41,848 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-08 16:35:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:35:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:35:41,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:35:41,939 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:35:41,940 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:35:49,755 INFO L? ?]: Removed 1701 outVars from TransFormulas that were not future-live. [2024-11-08 16:35:49,756 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:35:49,810 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:35:49,810 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-08 16:35:49,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:35:49 BoogieIcfgContainer [2024-11-08 16:35:49,811 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:35:49,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:35:49,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:35:49,816 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:35:49,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:35:37" (1/3) ... [2024-11-08 16:35:49,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7c8c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:35:49, skipping insertion in model container [2024-11-08 16:35:49,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:35:40" (2/3) ... [2024-11-08 16:35:49,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7c8c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:35:49, skipping insertion in model container [2024-11-08 16:35:49,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:35:49" (3/3) ... [2024-11-08 16:35:49,821 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.03.cil-2.c [2024-11-08 16:35:49,837 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:35:49,837 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:35:49,963 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:35:49,974 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;@36f65c5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:35:49,974 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:35:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 2344 states, 2318 states have (on average 1.8541846419327006) internal successors, (4298), 2321 states have internal predecessors, (4298), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-08 16:35:49,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 16:35:49,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:49,999 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] [2024-11-08 16:35:50,000 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:50,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:50,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1659781244, now seen corresponding path program 1 times [2024-11-08 16:35:50,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:50,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752262417] [2024-11-08 16:35:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:50,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:50,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:35:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:50,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:35:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:50,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:35:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:50,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-08 16:35:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:50,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:35:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:50,613 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 16:35:50,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:50,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752262417] [2024-11-08 16:35:50,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752262417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:50,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:50,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:35:50,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983021647] [2024-11-08 16:35:50,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:50,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:35:50,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:50,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:35:50,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:35:50,649 INFO L87 Difference]: Start difference. First operand has 2344 states, 2318 states have (on average 1.8541846419327006) internal successors, (4298), 2321 states have internal predecessors, (4298), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 16:35:51,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:51,868 INFO L93 Difference]: Finished difference Result 4911 states and 9024 transitions. [2024-11-08 16:35:51,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:35:51,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2024-11-08 16:35:51,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:51,907 INFO L225 Difference]: With dead ends: 4911 [2024-11-08 16:35:51,908 INFO L226 Difference]: Without dead ends: 2508 [2024-11-08 16:35:51,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:35:51,925 INFO L432 NwaCegarLoop]: 4166 mSDtfsCounter, 4555 mSDsluCounter, 12484 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4565 SdHoareTripleChecker+Valid, 16650 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:35:51,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4565 Valid, 16650 Invalid, 826 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 16:35:51,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2024-11-08 16:35:52,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 2423. [2024-11-08 16:35:52,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2379 states have (on average 1.8263976460697773) internal successors, (4345), 2382 states have internal predecessors, (4345), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2024-11-08 16:35:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4406 transitions. [2024-11-08 16:35:52,072 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4406 transitions. Word has length 79 [2024-11-08 16:35:52,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:35:52,073 INFO L471 AbstractCegarLoop]: Abstraction has 2423 states and 4406 transitions. [2024-11-08 16:35:52,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 16:35:52,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4406 transitions. [2024-11-08 16:35:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 16:35:52,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:52,077 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] [2024-11-08 16:35:52,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:35:52,078 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:52,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:52,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1422733048, now seen corresponding path program 1 times [2024-11-08 16:35:52,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:52,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509732799] [2024-11-08 16:35:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:52,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:52,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:35:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:52,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:35:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:52,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:35:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:52,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-08 16:35:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:52,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:35:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:52,325 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 16:35:52,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:52,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509732799] [2024-11-08 16:35:52,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509732799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:52,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:52,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:35:52,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570159124] [2024-11-08 16:35:52,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:52,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:35:52,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:52,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:35:52,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:35:52,333 INFO L87 Difference]: Start difference. First operand 2423 states and 4406 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 16:35:53,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:53,685 INFO L93 Difference]: Finished difference Result 2989 states and 5264 transitions. [2024-11-08 16:35:53,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:35:53,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2024-11-08 16:35:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:53,699 INFO L225 Difference]: With dead ends: 2989 [2024-11-08 16:35:53,699 INFO L226 Difference]: Without dead ends: 2698 [2024-11-08 16:35:53,702 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 16:35:53,703 INFO L432 NwaCegarLoop]: 4194 mSDtfsCounter, 4485 mSDsluCounter, 16591 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 20785 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:35:53,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4495 Valid, 20785 Invalid, 1267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 16:35:53,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2024-11-08 16:35:53,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 2560. [2024-11-08 16:35:53,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2560 states, 2497 states have (on average 1.8093712454945936) internal successors, (4518), 2501 states have internal predecessors, (4518), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2024-11-08 16:35:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 4605 transitions. [2024-11-08 16:35:53,784 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 4605 transitions. Word has length 79 [2024-11-08 16:35:53,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:35:53,785 INFO L471 AbstractCegarLoop]: Abstraction has 2560 states and 4605 transitions. [2024-11-08 16:35:53,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 16:35:53,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 4605 transitions. [2024-11-08 16:35:53,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 16:35:53,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:53,792 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] [2024-11-08 16:35:53,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:35:53,792 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:53,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:53,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1477125946, now seen corresponding path program 1 times [2024-11-08 16:35:53,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:53,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110852376] [2024-11-08 16:35:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:53,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:53,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:35:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:53,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:35:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:53,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:35:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:54,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-08 16:35:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:54,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:35:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:54,020 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 16:35:54,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:54,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110852376] [2024-11-08 16:35:54,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110852376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:54,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:54,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:35:54,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505869622] [2024-11-08 16:35:54,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:54,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:35:54,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:54,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:35:54,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:35:54,027 INFO L87 Difference]: Start difference. First operand 2560 states and 4605 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 16:35:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:55,283 INFO L93 Difference]: Finished difference Result 3483 states and 5999 transitions. [2024-11-08 16:35:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:35:55,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2024-11-08 16:35:55,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:55,299 INFO L225 Difference]: With dead ends: 3483 [2024-11-08 16:35:55,299 INFO L226 Difference]: Without dead ends: 3055 [2024-11-08 16:35:55,302 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 16:35:55,303 INFO L432 NwaCegarLoop]: 4192 mSDtfsCounter, 4483 mSDsluCounter, 16591 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 20783 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:35:55,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4493 Valid, 20783 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:35:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2024-11-08 16:35:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 2835. [2024-11-08 16:35:55,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2734 states have (on average 1.7794440380395025) internal successors, (4865), 2740 states have internal predecessors, (4865), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2024-11-08 16:35:55,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5008 transitions. [2024-11-08 16:35:55,394 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5008 transitions. Word has length 79 [2024-11-08 16:35:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:35:55,394 INFO L471 AbstractCegarLoop]: Abstraction has 2835 states and 5008 transitions. [2024-11-08 16:35:55,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 16:35:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5008 transitions. [2024-11-08 16:35:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 16:35:55,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:55,397 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] [2024-11-08 16:35:55,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:35:55,398 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:55,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:55,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1894522552, now seen corresponding path program 1 times [2024-11-08 16:35:55,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:55,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027637048] [2024-11-08 16:35:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:55,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:55,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:35:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:55,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:35:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:55,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:35:55,553 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 51 [2024-11-08 16:35:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:55,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:35:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:55,570 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 16:35:55,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:55,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027637048] [2024-11-08 16:35:55,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027637048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:55,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:55,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:35:55,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98524996] [2024-11-08 16:35:55,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:55,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:35:55,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:55,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:35:55,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:35:55,573 INFO L87 Difference]: Start difference. First operand 2835 states and 5008 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 16:35:56,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:56,844 INFO L93 Difference]: Finished difference Result 4438 states and 7418 transitions. [2024-11-08 16:35:56,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:35:56,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2024-11-08 16:35:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:56,860 INFO L225 Difference]: With dead ends: 4438 [2024-11-08 16:35:56,860 INFO L226 Difference]: Without dead ends: 3735 [2024-11-08 16:35:56,864 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 16:35:56,865 INFO L432 NwaCegarLoop]: 4192 mSDtfsCounter, 4479 mSDsluCounter, 16591 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 20783 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:35:56,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 20783 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:35:56,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2024-11-08 16:35:56,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3386. [2024-11-08 16:35:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3209 states have (on average 1.7323153630414458) internal successors, (5559), 3219 states have internal predecessors, (5559), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2024-11-08 16:35:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 5820 transitions. [2024-11-08 16:35:56,981 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 5820 transitions. Word has length 79 [2024-11-08 16:35:56,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:35:56,981 INFO L471 AbstractCegarLoop]: Abstraction has 3386 states and 5820 transitions. [2024-11-08 16:35:56,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 16:35:56,982 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 5820 transitions. [2024-11-08 16:35:56,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 16:35:56,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:56,984 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] [2024-11-08 16:35:56,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:35:56,985 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:56,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:56,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1215250298, now seen corresponding path program 1 times [2024-11-08 16:35:56,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:56,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471690813] [2024-11-08 16:35:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:56,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:57,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:35:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:57,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:35:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:57,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:35:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:57,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-08 16:35:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:57,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:35:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:57,121 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 16:35:57,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:57,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471690813] [2024-11-08 16:35:57,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471690813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:57,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:57,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:35:57,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215963717] [2024-11-08 16:35:57,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:57,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:35:57,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:57,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:35:57,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:35:57,124 INFO L87 Difference]: Start difference. First operand 3386 states and 5820 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 16:35:58,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:35:58,382 INFO L93 Difference]: Finished difference Result 6755 states and 10866 transitions. [2024-11-08 16:35:58,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:35:58,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2024-11-08 16:35:58,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:35:58,409 INFO L225 Difference]: With dead ends: 6755 [2024-11-08 16:35:58,409 INFO L226 Difference]: Without dead ends: 5501 [2024-11-08 16:35:58,416 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 16:35:58,417 INFO L432 NwaCegarLoop]: 4190 mSDtfsCounter, 4610 mSDsluCounter, 16583 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4624 SdHoareTripleChecker+Valid, 20773 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:35:58,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4624 Valid, 20773 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:35:58,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2024-11-08 16:35:58,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 4469. [2024-11-08 16:35:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4148 states have (on average 1.6723722275795565) internal successors, (6937), 4166 states have internal predecessors, (6937), 201 states have call successors, (201), 102 states have call predecessors, (201), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2024-11-08 16:35:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7436 transitions. [2024-11-08 16:35:58,742 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7436 transitions. Word has length 79 [2024-11-08 16:35:58,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:35:58,743 INFO L471 AbstractCegarLoop]: Abstraction has 4469 states and 7436 transitions. [2024-11-08 16:35:58,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 16:35:58,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7436 transitions. [2024-11-08 16:35:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 16:35:58,750 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:35:58,750 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] [2024-11-08 16:35:58,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:35:58,751 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:35:58,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:35:58,752 INFO L85 PathProgramCache]: Analyzing trace with hash 746324360, now seen corresponding path program 1 times [2024-11-08 16:35:58,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:35:58,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963197471] [2024-11-08 16:35:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:35:58,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:35:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:58,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:35:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:58,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:35:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:58,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:35:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:58,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-08 16:35:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:58,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:35:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:35:58,926 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 16:35:58,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:35:58,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963197471] [2024-11-08 16:35:58,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963197471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:35:58,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:35:58,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:35:58,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017907915] [2024-11-08 16:35:58,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:35:58,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:35:58,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:35:58,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:35:58,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:35:58,929 INFO L87 Difference]: Start difference. First operand 4469 states and 7436 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 16:36:00,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:36:00,485 INFO L93 Difference]: Finished difference Result 10716 states and 16824 transitions. [2024-11-08 16:36:00,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:36:00,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2024-11-08 16:36:00,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:36:00,546 INFO L225 Difference]: With dead ends: 10716 [2024-11-08 16:36:00,547 INFO L226 Difference]: Without dead ends: 8379 [2024-11-08 16:36:00,561 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 16:36:00,563 INFO L432 NwaCegarLoop]: 4189 mSDtfsCounter, 4499 mSDsluCounter, 16580 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4508 SdHoareTripleChecker+Valid, 20769 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:36:00,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4508 Valid, 20769 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:36:00,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8379 states. [2024-11-08 16:36:00,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8379 to 6544. [2024-11-08 16:36:00,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6544 states, 5943 states have (on average 1.6097930338213025) internal successors, (9567), 5977 states have internal predecessors, (9567), 369 states have call successors, (369), 198 states have call predecessors, (369), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2024-11-08 16:36:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6544 states to 6544 states and 10580 transitions. [2024-11-08 16:36:00,960 INFO L78 Accepts]: Start accepts. Automaton has 6544 states and 10580 transitions. Word has length 79 [2024-11-08 16:36:00,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:36:00,960 INFO L471 AbstractCegarLoop]: Abstraction has 6544 states and 10580 transitions. [2024-11-08 16:36:00,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 16:36:00,961 INFO L276 IsEmpty]: Start isEmpty. Operand 6544 states and 10580 transitions. [2024-11-08 16:36:00,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 16:36:00,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:00,966 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] [2024-11-08 16:36:00,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:36:00,967 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:36:00,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:00,967 INFO L85 PathProgramCache]: Analyzing trace with hash 948148294, now seen corresponding path program 1 times [2024-11-08 16:36:00,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:00,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037473066] [2024-11-08 16:36:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:00,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:36:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:36:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:36:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-08 16:36:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:36:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:01,100 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 16:36:01,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:01,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037473066] [2024-11-08 16:36:01,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037473066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:01,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:36:01,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:36:01,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339948724] [2024-11-08 16:36:01,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:01,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:36:01,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:01,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:36:01,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:36:01,103 INFO L87 Difference]: Start difference. First operand 6544 states and 10580 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 16:36:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:36:02,747 INFO L93 Difference]: Finished difference Result 17622 states and 27382 transitions. [2024-11-08 16:36:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:36:02,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2024-11-08 16:36:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:36:02,814 INFO L225 Difference]: With dead ends: 17622 [2024-11-08 16:36:02,816 INFO L226 Difference]: Without dead ends: 13210 [2024-11-08 16:36:02,839 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 16:36:02,840 INFO L432 NwaCegarLoop]: 4190 mSDtfsCounter, 4488 mSDsluCounter, 16583 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 20773 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:36:02,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4502 Valid, 20773 Invalid, 1200 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 16:36:02,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13210 states. [2024-11-08 16:36:03,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13210 to 10788. [2024-11-08 16:36:03,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10788 states, 9643 states have (on average 1.5587472778181064) internal successors, (15031), 9709 states have internal predecessors, (15031), 689 states have call successors, (689), 390 states have call predecessors, (689), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2024-11-08 16:36:03,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10788 states to 10788 states and 17202 transitions. [2024-11-08 16:36:03,624 INFO L78 Accepts]: Start accepts. Automaton has 10788 states and 17202 transitions. Word has length 79 [2024-11-08 16:36:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:36:03,626 INFO L471 AbstractCegarLoop]: Abstraction has 10788 states and 17202 transitions. [2024-11-08 16:36:03,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 16:36:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 10788 states and 17202 transitions. [2024-11-08 16:36:03,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 16:36:03,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:03,638 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] [2024-11-08 16:36:03,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:36:03,639 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:36:03,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:03,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1381877380, now seen corresponding path program 1 times [2024-11-08 16:36:03,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:03,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548818378] [2024-11-08 16:36:03,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:03,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:03,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:36:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:03,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:36:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:03,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:36:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:03,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-08 16:36:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:03,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:36:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:03,747 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 16:36:03,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:03,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548818378] [2024-11-08 16:36:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548818378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:03,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:36:03,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:36:03,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197711326] [2024-11-08 16:36:03,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:03,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:36:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:03,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:36:03,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:36:03,750 INFO L87 Difference]: Start difference. First operand 10788 states and 17202 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 16:36:05,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:36:05,300 INFO L93 Difference]: Finished difference Result 26631 states and 41350 transitions. [2024-11-08 16:36:05,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:36:05,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2024-11-08 16:36:05,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:36:05,369 INFO L225 Difference]: With dead ends: 26631 [2024-11-08 16:36:05,370 INFO L226 Difference]: Without dead ends: 17976 [2024-11-08 16:36:05,405 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 16:36:05,406 INFO L432 NwaCegarLoop]: 4222 mSDtfsCounter, 4656 mSDsluCounter, 12352 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 16574 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:36:05,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 16574 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 16:36:05,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17976 states. [2024-11-08 16:36:06,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17976 to 15113. [2024-11-08 16:36:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15113 states, 13373 states have (on average 1.5226949824272789) internal successors, (20363), 13504 states have internal predecessors, (20363), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2024-11-08 16:36:06,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15113 states to 15113 states and 23508 transitions. [2024-11-08 16:36:06,372 INFO L78 Accepts]: Start accepts. Automaton has 15113 states and 23508 transitions. Word has length 79 [2024-11-08 16:36:06,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:36:06,373 INFO L471 AbstractCegarLoop]: Abstraction has 15113 states and 23508 transitions. [2024-11-08 16:36:06,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 16:36:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand 15113 states and 23508 transitions. [2024-11-08 16:36:06,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-08 16:36:06,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:06,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:06,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:36:06,414 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:36:06,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:06,414 INFO L85 PathProgramCache]: Analyzing trace with hash 372870207, now seen corresponding path program 1 times [2024-11-08 16:36:06,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:06,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894236009] [2024-11-08 16:36:06,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:06,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,496 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 16:36:06,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:36:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:36:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-08 16:36:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:36:06,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 16:36:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:36:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-08 16:36:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 16:36:06,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:06,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894236009] [2024-11-08 16:36:06,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894236009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:06,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847294789] [2024-11-08 16:36:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:06,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:06,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:36:06,620 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 16:36:06,621 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 16:36:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:06,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:36:06,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 16:36:06,843 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:36:06,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847294789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:06,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:36:06,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-08 16:36:06,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540194990] [2024-11-08 16:36:06,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:06,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:36:06,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:06,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:36:06,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:36:06,845 INFO L87 Difference]: Start difference. First operand 15113 states and 23508 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 16:36:08,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:36:08,524 INFO L93 Difference]: Finished difference Result 40726 states and 62424 transitions. [2024-11-08 16:36:08,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:36:08,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 129 [2024-11-08 16:36:08,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:36:08,638 INFO L225 Difference]: With dead ends: 40726 [2024-11-08 16:36:08,638 INFO L226 Difference]: Without dead ends: 27746 [2024-11-08 16:36:08,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:36:08,691 INFO L432 NwaCegarLoop]: 4184 mSDtfsCounter, 4140 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4140 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:36:08,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4140 Valid, 4386 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:36:08,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27746 states. [2024-11-08 16:36:10,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27746 to 27548. [2024-11-08 16:36:10,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27548 states, 24124 states have (on average 1.4909633559940307) internal successors, (35968), 24384 states have internal predecessors, (35968), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2024-11-08 16:36:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27548 states to 27548 states and 42087 transitions. [2024-11-08 16:36:10,292 INFO L78 Accepts]: Start accepts. Automaton has 27548 states and 42087 transitions. Word has length 129 [2024-11-08 16:36:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:36:10,293 INFO L471 AbstractCegarLoop]: Abstraction has 27548 states and 42087 transitions. [2024-11-08 16:36:10,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 16:36:10,294 INFO L276 IsEmpty]: Start isEmpty. Operand 27548 states and 42087 transitions. [2024-11-08 16:36:10,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-08 16:36:10,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:10,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:10,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 16:36:10,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:10,563 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:36:10,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:10,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1742173535, now seen corresponding path program 1 times [2024-11-08 16:36:10,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:10,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119585742] [2024-11-08 16:36:10,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:10,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:10,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:36:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:10,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:36:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:10,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:36:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:10,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-08 16:36:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:10,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:36:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:10,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 16:36:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:10,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:36:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:10,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-08 16:36:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 16:36:10,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119585742] [2024-11-08 16:36:10,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119585742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584393107] [2024-11-08 16:36:10,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:10,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:10,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:36:10,719 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:10,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:36:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:10,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:36:10,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 16:36:10,914 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:36:10,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584393107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:10,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:36:10,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-08 16:36:10,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524601410] [2024-11-08 16:36:10,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:10,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:36:10,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:10,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:36:10,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:36:10,916 INFO L87 Difference]: Start difference. First operand 27548 states and 42087 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 16:36:13,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:36:13,200 INFO L93 Difference]: Finished difference Result 77685 states and 118029 transitions. [2024-11-08 16:36:13,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:36:13,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 129 [2024-11-08 16:36:13,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:36:13,449 INFO L225 Difference]: With dead ends: 77685 [2024-11-08 16:36:13,449 INFO L226 Difference]: Without dead ends: 52270 [2024-11-08 16:36:13,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:36:13,538 INFO L432 NwaCegarLoop]: 4184 mSDtfsCounter, 4134 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4134 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:36:13,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4134 Valid, 4386 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:36:13,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52270 states. [2024-11-08 16:36:16,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52270 to 51876. [2024-11-08 16:36:16,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51876 states, 45134 states have (on average 1.4709974741879737) internal successors, (66392), 45652 states have internal predecessors, (66392), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2024-11-08 16:36:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51876 states to 51876 states and 78359 transitions. [2024-11-08 16:36:16,833 INFO L78 Accepts]: Start accepts. Automaton has 51876 states and 78359 transitions. Word has length 129 [2024-11-08 16:36:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:36:16,834 INFO L471 AbstractCegarLoop]: Abstraction has 51876 states and 78359 transitions. [2024-11-08 16:36:16,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 16:36:16,834 INFO L276 IsEmpty]: Start isEmpty. Operand 51876 states and 78359 transitions. [2024-11-08 16:36:16,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-08 16:36:16,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:16,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:16,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:36:17,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 16:36:17,164 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:36:17,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:17,165 INFO L85 PathProgramCache]: Analyzing trace with hash 467842687, now seen corresponding path program 1 times [2024-11-08 16:36:17,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:17,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235014534] [2024-11-08 16:36:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:17,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:36:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:36:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:36:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-08 16:36:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:36:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 16:36:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:36:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-08 16:36:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 16:36:17,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:17,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235014534] [2024-11-08 16:36:17,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235014534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:17,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761228917] [2024-11-08 16:36:17,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:17,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:17,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:36:17,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:17,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:36:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:17,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:36:17,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 16:36:17,513 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:36:17,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761228917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:17,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:36:17,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-08 16:36:17,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748432493] [2024-11-08 16:36:17,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:17,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:36:17,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:17,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:36:17,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:36:17,517 INFO L87 Difference]: Start difference. First operand 51876 states and 78359 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 16:36:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:36:22,627 INFO L93 Difference]: Finished difference Result 149129 states and 226473 transitions. [2024-11-08 16:36:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:36:22,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 129 [2024-11-08 16:36:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:36:23,218 INFO L225 Difference]: With dead ends: 149129 [2024-11-08 16:36:23,219 INFO L226 Difference]: Without dead ends: 99387 [2024-11-08 16:36:23,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:36:23,573 INFO L432 NwaCegarLoop]: 4388 mSDtfsCounter, 197 mSDsluCounter, 4182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 8570 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:36:23,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 8570 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:36:23,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99387 states. [2024-11-08 16:36:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99387 to 99387. [2024-11-08 16:36:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99387 states, 86170 states have (on average 1.4553440872693513) internal successors, (125407), 87073 states have internal predecessors, (125407), 7743 states have call successors, (7743), 4704 states have call predecessors, (7743), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2024-11-08 16:36:30,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99387 states to 99387 states and 150196 transitions. [2024-11-08 16:36:30,457 INFO L78 Accepts]: Start accepts. Automaton has 99387 states and 150196 transitions. Word has length 129 [2024-11-08 16:36:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:36:30,458 INFO L471 AbstractCegarLoop]: Abstraction has 99387 states and 150196 transitions. [2024-11-08 16:36:30,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-08 16:36:30,459 INFO L276 IsEmpty]: Start isEmpty. Operand 99387 states and 150196 transitions. [2024-11-08 16:36:30,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-08 16:36:30,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:30,738 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2024-11-08 16:36:30,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:36:30,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:30,939 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:36:30,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:30,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1721282092, now seen corresponding path program 1 times [2024-11-08 16:36:30,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:30,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873040830] [2024-11-08 16:36:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:30,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:31,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:36:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:31,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-08 16:36:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:31,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-08 16:36:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:31,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-08 16:36:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:31,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-08 16:36:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:31,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-08 16:36:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:31,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:36:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:31,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-08 16:36:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:31,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:36:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:31,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-08 16:36:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 16:36:31,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:36:31,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873040830] [2024-11-08 16:36:31,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873040830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:36:31,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562411690] [2024-11-08 16:36:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:31,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:31,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:36:31,125 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:31,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:36:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:36:31,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:36:31,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:36:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 16:36:31,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:36:31,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562411690] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:36:31,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:36:31,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-08 16:36:31,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132606635] [2024-11-08 16:36:31,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:36:31,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:36:31,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:36:31,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:36:31,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:36:31,410 INFO L87 Difference]: Start difference. First operand 99387 states and 150196 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)