./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5bbf318bd4a4e295f88f23f80bb9f32022c2eeb214e815b87206f6eafbbf272 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:59:22,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:59:22,665 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:59:22,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:59:22,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:59:22,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:59:22,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:59:22,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:59:22,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:59:22,699 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:59:22,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:59:22,700 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:59:22,701 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:59:22,701 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:59:22,701 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:59:22,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:59:22,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:59:22,704 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:59:22,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:59:22,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:59:22,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:59:22,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:59:22,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:59:22,705 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:59:22,705 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:59:22,705 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:59:22,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:59:22,705 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:59:22,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:59:22,706 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:59:22,706 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:59:22,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:59:22,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:59:22,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:59:22,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:59:22,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:59:22,707 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:59:22,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:59:22,707 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:59:22,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:59:22,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:59:22,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:59:22,711 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5bbf318bd4a4e295f88f23f80bb9f32022c2eeb214e815b87206f6eafbbf272 [2024-10-24 02:59:22,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:59:22,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:59:22,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:59:22,936 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:59:22,937 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:59:22,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2024-10-24 02:59:24,198 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:59:24,401 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:59:24,401 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2024-10-24 02:59:24,414 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd7110499/85c44cb350a34588b33a9a34f80e475d/FLAG8c85341b7 [2024-10-24 02:59:24,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd7110499/85c44cb350a34588b33a9a34f80e475d [2024-10-24 02:59:24,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:59:24,429 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:59:24,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:59:24,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:59:24,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:59:24,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421c3a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24, skipping insertion in model container [2024-10-24 02:59:24,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,477 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:59:24,621 WARN L248 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/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[913,926] [2024-10-24 02:59:24,656 WARN L248 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/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[5977,5990] [2024-10-24 02:59:24,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:59:24,719 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:59:24,728 WARN L248 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/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[913,926] [2024-10-24 02:59:24,744 WARN L248 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/pc_sfifo_1.cil-2+token_ring.05.cil-1.c[5977,5990] [2024-10-24 02:59:24,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:59:24,806 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:59:24,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24 WrapperNode [2024-10-24 02:59:24,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:59:24,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:59:24,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:59:24,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:59:24,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,849 INFO L138 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 663 [2024-10-24 02:59:24,850 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:59:24,850 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:59:24,851 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:59:24,851 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:59:24,862 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,865 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,876 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]. [2024-10-24 02:59:24,877 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,897 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:59:24,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:59:24,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:59:24,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:59:24,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24" (1/1) ... [2024-10-24 02:59:24,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:59:24,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:24,935 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) [2024-10-24 02:59:24,937 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 [2024-10-24 02:59:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:59:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-24 02:59:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-24 02:59:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-10-24 02:59:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-10-24 02:59:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-24 02:59:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-24 02:59:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-24 02:59:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-24 02:59:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-24 02:59:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-24 02:59:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-24 02:59:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-24 02:59:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-24 02:59:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-24 02:59:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:59:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-24 02:59:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-24 02:59:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:59:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:59:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-24 02:59:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-24 02:59:25,083 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:59:25,085 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:59:25,669 INFO L? ?]: Removed 85 outVars from TransFormulas that were not future-live. [2024-10-24 02:59:25,669 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:59:25,709 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:59:25,709 INFO L314 CfgBuilder]: Removed 12 assume(true) statements. [2024-10-24 02:59:25,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:59:25 BoogieIcfgContainer [2024-10-24 02:59:25,710 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:59:25,711 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:59:25,712 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:59:25,714 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:59:25,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:59:24" (1/3) ... [2024-10-24 02:59:25,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a16f13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:59:25, skipping insertion in model container [2024-10-24 02:59:25,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24" (2/3) ... [2024-10-24 02:59:25,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a16f13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:59:25, skipping insertion in model container [2024-10-24 02:59:25,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:59:25" (3/3) ... [2024-10-24 02:59:25,717 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.05.cil-1.c [2024-10-24 02:59:25,729 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:59:25,730 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:59:25,785 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:59:25,790 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;@36cf347a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:59:25,790 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:59:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 213 states have (on average 1.6901408450704225) internal successors, (360), 218 states have internal predecessors, (360), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-24 02:59:25,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-24 02:59:25,801 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:25,801 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:25,802 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:25,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:25,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1006390877, now seen corresponding path program 1 times [2024-10-24 02:59:25,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:25,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173770077] [2024-10-24 02:59:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:25,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:26,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:26,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173770077] [2024-10-24 02:59:26,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173770077] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:26,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:26,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:26,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345721659] [2024-10-24 02:59:26,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:26,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:26,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:26,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:26,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:26,157 INFO L87 Difference]: Start difference. First operand has 250 states, 213 states have (on average 1.6901408450704225) internal successors, (360), 218 states have internal predecessors, (360), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 02:59:26,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:26,612 INFO L93 Difference]: Finished difference Result 548 states and 898 transitions. [2024-10-24 02:59:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:26,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2024-10-24 02:59:26,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:26,623 INFO L225 Difference]: With dead ends: 548 [2024-10-24 02:59:26,623 INFO L226 Difference]: Without dead ends: 308 [2024-10-24 02:59:26,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:26,629 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 487 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:26,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 466 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 02:59:26,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-10-24 02:59:26,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 302. [2024-10-24 02:59:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 260 states have (on average 1.5346153846153847) internal successors, (399), 264 states have internal predecessors, (399), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (33), 27 states have call predecessors, (33), 27 states have call successors, (33) [2024-10-24 02:59:26,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 461 transitions. [2024-10-24 02:59:26,688 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 461 transitions. Word has length 37 [2024-10-24 02:59:26,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:26,688 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 461 transitions. [2024-10-24 02:59:26,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 02:59:26,688 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 461 transitions. [2024-10-24 02:59:26,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-24 02:59:26,690 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:26,690 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] [2024-10-24 02:59:26,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:59:26,691 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:26,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:26,691 INFO L85 PathProgramCache]: Analyzing trace with hash 177327675, now seen corresponding path program 1 times [2024-10-24 02:59:26,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:26,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139657809] [2024-10-24 02:59:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:26,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 02:59:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:26,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:26,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139657809] [2024-10-24 02:59:26,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139657809] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:26,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:26,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:26,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620987301] [2024-10-24 02:59:26,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:26,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:26,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:26,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:26,789 INFO L87 Difference]: Start difference. First operand 302 states and 461 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 02:59:27,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:27,101 INFO L93 Difference]: Finished difference Result 536 states and 805 transitions. [2024-10-24 02:59:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:27,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2024-10-24 02:59:27,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:27,108 INFO L225 Difference]: With dead ends: 536 [2024-10-24 02:59:27,109 INFO L226 Difference]: Without dead ends: 425 [2024-10-24 02:59:27,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:27,111 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 500 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:27,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 459 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:59:27,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-10-24 02:59:27,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 402. [2024-10-24 02:59:27,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 347 states have (on average 1.4899135446685878) internal successors, (517), 352 states have internal predecessors, (517), 37 states have call successors, (37), 15 states have call predecessors, (37), 16 states have return successors, (47), 35 states have call predecessors, (47), 35 states have call successors, (47) [2024-10-24 02:59:27,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 601 transitions. [2024-10-24 02:59:27,176 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 601 transitions. Word has length 38 [2024-10-24 02:59:27,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:27,177 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 601 transitions. [2024-10-24 02:59:27,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 02:59:27,177 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 601 transitions. [2024-10-24 02:59:27,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-24 02:59:27,180 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:27,181 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:27,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:59:27,181 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:27,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1706375964, now seen corresponding path program 1 times [2024-10-24 02:59:27,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:27,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249059159] [2024-10-24 02:59:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:27,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:59:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:27,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:27,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249059159] [2024-10-24 02:59:27,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249059159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:27,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:27,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:27,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931977822] [2024-10-24 02:59:27,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:27,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:27,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:27,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:27,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:27,284 INFO L87 Difference]: Start difference. First operand 402 states and 601 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 02:59:27,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:27,607 INFO L93 Difference]: Finished difference Result 822 states and 1182 transitions. [2024-10-24 02:59:27,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:27,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-10-24 02:59:27,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:27,611 INFO L225 Difference]: With dead ends: 822 [2024-10-24 02:59:27,611 INFO L226 Difference]: Without dead ends: 611 [2024-10-24 02:59:27,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:27,613 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 213 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:27,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 630 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:59:27,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-10-24 02:59:27,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 507. [2024-10-24 02:59:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 440 states have (on average 1.4681818181818183) internal successors, (646), 447 states have internal predecessors, (646), 43 states have call successors, (43), 21 states have call predecessors, (43), 22 states have return successors, (53), 39 states have call predecessors, (53), 41 states have call successors, (53) [2024-10-24 02:59:27,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 742 transitions. [2024-10-24 02:59:27,639 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 742 transitions. Word has length 39 [2024-10-24 02:59:27,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:27,639 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 742 transitions. [2024-10-24 02:59:27,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-24 02:59:27,639 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 742 transitions. [2024-10-24 02:59:27,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 02:59:27,641 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:27,641 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 02:59:27,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:59:27,642 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:27,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:27,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1881139756, now seen corresponding path program 1 times [2024-10-24 02:59:27,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:27,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090962177] [2024-10-24 02:59:27,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:27,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 02:59:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 02:59:27,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:27,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090962177] [2024-10-24 02:59:27,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090962177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:27,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:27,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:27,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838749334] [2024-10-24 02:59:27,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:27,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:27,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:27,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:27,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:27,728 INFO L87 Difference]: Start difference. First operand 507 states and 742 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 02:59:28,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:28,167 INFO L93 Difference]: Finished difference Result 1023 states and 1459 transitions. [2024-10-24 02:59:28,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:28,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 54 [2024-10-24 02:59:28,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:28,171 INFO L225 Difference]: With dead ends: 1023 [2024-10-24 02:59:28,171 INFO L226 Difference]: Without dead ends: 707 [2024-10-24 02:59:28,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:28,176 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 198 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:28,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 674 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 02:59:28,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-10-24 02:59:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 673. [2024-10-24 02:59:28,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 582 states have (on average 1.4123711340206186) internal successors, (822), 591 states have internal predecessors, (822), 57 states have call successors, (57), 29 states have call predecessors, (57), 32 states have return successors, (77), 53 states have call predecessors, (77), 55 states have call successors, (77) [2024-10-24 02:59:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 956 transitions. [2024-10-24 02:59:28,213 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 956 transitions. Word has length 54 [2024-10-24 02:59:28,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:28,214 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 956 transitions. [2024-10-24 02:59:28,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 02:59:28,215 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 956 transitions. [2024-10-24 02:59:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 02:59:28,217 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:28,217 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:28,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:59:28,218 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:28,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:28,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1838751112, now seen corresponding path program 1 times [2024-10-24 02:59:28,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:28,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593850792] [2024-10-24 02:59:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:28,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 02:59:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 02:59:28,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:28,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593850792] [2024-10-24 02:59:28,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593850792] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:28,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:28,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:28,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853182978] [2024-10-24 02:59:28,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:28,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:28,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:28,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:28,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:28,273 INFO L87 Difference]: Start difference. First operand 673 states and 956 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 02:59:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:28,543 INFO L93 Difference]: Finished difference Result 1252 states and 1735 transitions. [2024-10-24 02:59:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:28,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2024-10-24 02:59:28,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:28,550 INFO L225 Difference]: With dead ends: 1252 [2024-10-24 02:59:28,551 INFO L226 Difference]: Without dead ends: 850 [2024-10-24 02:59:28,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:28,554 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 486 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:28,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 471 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:59:28,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-10-24 02:59:28,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 801. [2024-10-24 02:59:28,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 694 states have (on average 1.3789625360230549) internal successors, (957), 705 states have internal predecessors, (957), 65 states have call successors, (65), 35 states have call predecessors, (65), 40 states have return successors, (91), 61 states have call predecessors, (91), 63 states have call successors, (91) [2024-10-24 02:59:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1113 transitions. [2024-10-24 02:59:28,597 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1113 transitions. Word has length 59 [2024-10-24 02:59:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:28,597 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 1113 transitions. [2024-10-24 02:59:28,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 02:59:28,597 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1113 transitions. [2024-10-24 02:59:28,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 02:59:28,598 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:28,599 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:28,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:59:28,599 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:28,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:28,599 INFO L85 PathProgramCache]: Analyzing trace with hash 464706324, now seen corresponding path program 1 times [2024-10-24 02:59:28,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:28,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399841857] [2024-10-24 02:59:28,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:28,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:59:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:59:28,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:28,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399841857] [2024-10-24 02:59:28,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399841857] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:28,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400128180] [2024-10-24 02:59:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:28,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:28,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:28,687 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) [2024-10-24 02:59:28,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 02:59:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 02:59:28,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:28,800 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 02:59:28,801 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:28,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400128180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:28,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:28,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-10-24 02:59:28,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033854538] [2024-10-24 02:59:28,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:28,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:28,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:28,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:28,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:28,803 INFO L87 Difference]: Start difference. First operand 801 states and 1113 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 02:59:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:28,877 INFO L93 Difference]: Finished difference Result 1289 states and 1787 transitions. [2024-10-24 02:59:28,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:59:28,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2024-10-24 02:59:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:28,881 INFO L225 Difference]: With dead ends: 1289 [2024-10-24 02:59:28,881 INFO L226 Difference]: Without dead ends: 806 [2024-10-24 02:59:28,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:28,883 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 0 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:28,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1033 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:59:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-10-24 02:59:28,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2024-10-24 02:59:28,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 699 states have (on average 1.3648068669527897) internal successors, (954), 710 states have internal predecessors, (954), 65 states have call successors, (65), 35 states have call predecessors, (65), 40 states have return successors, (91), 61 states have call predecessors, (91), 63 states have call successors, (91) [2024-10-24 02:59:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1110 transitions. [2024-10-24 02:59:28,910 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1110 transitions. Word has length 60 [2024-10-24 02:59:28,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:28,910 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1110 transitions. [2024-10-24 02:59:28,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 02:59:28,910 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1110 transitions. [2024-10-24 02:59:28,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 02:59:28,912 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:28,912 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:28,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 02:59:29,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-24 02:59:29,113 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:29,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:29,114 INFO L85 PathProgramCache]: Analyzing trace with hash -379299178, now seen corresponding path program 1 times [2024-10-24 02:59:29,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:29,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444122053] [2024-10-24 02:59:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:29,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:59:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 02:59:29,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:29,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444122053] [2024-10-24 02:59:29,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444122053] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:29,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606042425] [2024-10-24 02:59:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:29,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:29,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:29,187 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) [2024-10-24 02:59:29,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 02:59:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 02:59:29,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:59:29,270 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:29,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606042425] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:29,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:29,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-10-24 02:59:29,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106338790] [2024-10-24 02:59:29,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:29,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:29,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:29,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:29,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:29,273 INFO L87 Difference]: Start difference. First operand 806 states and 1110 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 02:59:29,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:29,347 INFO L93 Difference]: Finished difference Result 1232 states and 1689 transitions. [2024-10-24 02:59:29,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:59:29,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2024-10-24 02:59:29,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:29,351 INFO L225 Difference]: With dead ends: 1232 [2024-10-24 02:59:29,351 INFO L226 Difference]: Without dead ends: 703 [2024-10-24 02:59:29,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:29,352 INFO L432 NwaCegarLoop]: 346 mSDtfsCounter, 0 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:29,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1033 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:59:29,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-10-24 02:59:29,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 696. [2024-10-24 02:59:29,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 607 states have (on average 1.3690280065897857) internal successors, (831), 616 states have internal predecessors, (831), 55 states have call successors, (55), 29 states have call predecessors, (55), 32 states have return successors, (72), 51 states have call predecessors, (72), 53 states have call successors, (72) [2024-10-24 02:59:29,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 958 transitions. [2024-10-24 02:59:29,374 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 958 transitions. Word has length 60 [2024-10-24 02:59:29,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:29,374 INFO L471 AbstractCegarLoop]: Abstraction has 696 states and 958 transitions. [2024-10-24 02:59:29,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 02:59:29,374 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 958 transitions. [2024-10-24 02:59:29,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 02:59:29,375 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:29,376 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:29,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 02:59:29,579 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,SelfDestructingSolverStorable6 [2024-10-24 02:59:29,580 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:29,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:29,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1418340438, now seen corresponding path program 1 times [2024-10-24 02:59:29,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:29,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367311778] [2024-10-24 02:59:29,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:29,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:59:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,670 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 02:59:29,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:29,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367311778] [2024-10-24 02:59:29,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367311778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:29,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:29,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:59:29,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559023861] [2024-10-24 02:59:29,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:29,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:59:29,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:29,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:59:29,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:29,672 INFO L87 Difference]: Start difference. First operand 696 states and 958 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 02:59:29,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:29,982 INFO L93 Difference]: Finished difference Result 781 states and 1061 transitions. [2024-10-24 02:59:29,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:59:29,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2024-10-24 02:59:29,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:29,986 INFO L225 Difference]: With dead ends: 781 [2024-10-24 02:59:29,986 INFO L226 Difference]: Without dead ends: 778 [2024-10-24 02:59:29,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:59:29,987 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 830 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:29,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 468 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:59:29,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2024-10-24 02:59:30,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 695. [2024-10-24 02:59:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 607 states have (on average 1.3657331136738056) internal successors, (829), 615 states have internal predecessors, (829), 54 states have call successors, (54), 29 states have call predecessors, (54), 32 states have return successors, (72), 51 states have call predecessors, (72), 53 states have call successors, (72) [2024-10-24 02:59:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 955 transitions. [2024-10-24 02:59:30,016 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 955 transitions. Word has length 60 [2024-10-24 02:59:30,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:30,017 INFO L471 AbstractCegarLoop]: Abstraction has 695 states and 955 transitions. [2024-10-24 02:59:30,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 02:59:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 955 transitions. [2024-10-24 02:59:30,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:59:30,018 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:30,018 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:30,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 02:59:30,019 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:30,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:30,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1017995321, now seen corresponding path program 1 times [2024-10-24 02:59:30,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:30,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188430497] [2024-10-24 02:59:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:30,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:59:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 02:59:30,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:30,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188430497] [2024-10-24 02:59:30,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188430497] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:30,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374863629] [2024-10-24 02:59:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:30,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:30,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:30,126 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) [2024-10-24 02:59:30,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 02:59:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 02:59:30,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:30,387 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:30,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:59:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 02:59:30,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374863629] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:59:30,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:59:30,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-10-24 02:59:30,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627290340] [2024-10-24 02:59:30,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:59:30,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:59:30,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:30,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:59:30,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:59:30,444 INFO L87 Difference]: Start difference. First operand 695 states and 955 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-24 02:59:30,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:30,949 INFO L93 Difference]: Finished difference Result 1498 states and 1990 transitions. [2024-10-24 02:59:30,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 02:59:30,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 61 [2024-10-24 02:59:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:30,955 INFO L225 Difference]: With dead ends: 1498 [2024-10-24 02:59:30,956 INFO L226 Difference]: Without dead ends: 1495 [2024-10-24 02:59:30,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:59:30,957 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 986 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:30,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 1073 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 02:59:30,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2024-10-24 02:59:30,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 998. [2024-10-24 02:59:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 874 states have (on average 1.3443935926773456) internal successors, (1175), 888 states have internal predecessors, (1175), 73 states have call successors, (73), 42 states have call predecessors, (73), 49 states have return successors, (102), 68 states have call predecessors, (102), 72 states have call successors, (102) [2024-10-24 02:59:31,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1350 transitions. [2024-10-24 02:59:31,004 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1350 transitions. Word has length 61 [2024-10-24 02:59:31,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:31,004 INFO L471 AbstractCegarLoop]: Abstraction has 998 states and 1350 transitions. [2024-10-24 02:59:31,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 6 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-10-24 02:59:31,005 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1350 transitions. [2024-10-24 02:59:31,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 02:59:31,006 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:31,006 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-24 02:59:31,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 02:59:31,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:31,207 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:31,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:31,208 INFO L85 PathProgramCache]: Analyzing trace with hash -825354880, now seen corresponding path program 2 times [2024-10-24 02:59:31,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:31,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372599427] [2024-10-24 02:59:31,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:31,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 02:59:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-24 02:59:31,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:31,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372599427] [2024-10-24 02:59:31,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372599427] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:31,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:31,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:31,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622218783] [2024-10-24 02:59:31,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:31,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:31,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:31,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:31,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:31,252 INFO L87 Difference]: Start difference. First operand 998 states and 1350 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 02:59:31,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:31,524 INFO L93 Difference]: Finished difference Result 1626 states and 2167 transitions. [2024-10-24 02:59:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:31,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2024-10-24 02:59:31,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:31,529 INFO L225 Difference]: With dead ends: 1626 [2024-10-24 02:59:31,529 INFO L226 Difference]: Without dead ends: 967 [2024-10-24 02:59:31,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:31,531 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 499 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:31,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 487 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:59:31,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2024-10-24 02:59:31,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 890. [2024-10-24 02:59:31,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 779 states have (on average 1.34403080872914) internal successors, (1047), 793 states have internal predecessors, (1047), 66 states have call successors, (66), 37 states have call predecessors, (66), 43 states have return successors, (91), 60 states have call predecessors, (91), 65 states have call successors, (91) [2024-10-24 02:59:31,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1204 transitions. [2024-10-24 02:59:31,564 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1204 transitions. Word has length 78 [2024-10-24 02:59:31,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:31,565 INFO L471 AbstractCegarLoop]: Abstraction has 890 states and 1204 transitions. [2024-10-24 02:59:31,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-24 02:59:31,565 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1204 transitions. [2024-10-24 02:59:31,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 02:59:31,567 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:31,567 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-10-24 02:59:31,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 02:59:31,567 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:31,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash -525884382, now seen corresponding path program 1 times [2024-10-24 02:59:31,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:31,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751369937] [2024-10-24 02:59:31,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:31,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 02:59:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 02:59:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 02:59:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-24 02:59:31,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:31,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751369937] [2024-10-24 02:59:31,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751369937] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:31,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686716078] [2024-10-24 02:59:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:31,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:31,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:31,635 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) [2024-10-24 02:59:31,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 02:59:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:31,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 02:59:31,735 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:31,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686716078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:31,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:31,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-24 02:59:31,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298189624] [2024-10-24 02:59:31,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:31,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:31,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:31,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:31,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:59:31,736 INFO L87 Difference]: Start difference. First operand 890 states and 1204 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 02:59:31,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:31,815 INFO L93 Difference]: Finished difference Result 1173 states and 1560 transitions. [2024-10-24 02:59:31,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:31,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 92 [2024-10-24 02:59:31,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:31,817 INFO L225 Difference]: With dead ends: 1173 [2024-10-24 02:59:31,817 INFO L226 Difference]: Without dead ends: 186 [2024-10-24 02:59:31,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:59:31,820 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 55 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:31,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 704 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:59:31,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-10-24 02:59:31,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2024-10-24 02:59:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 160 states have (on average 1.5875) internal successors, (254), 161 states have internal predecessors, (254), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-24 02:59:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 292 transitions. [2024-10-24 02:59:31,828 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 292 transitions. Word has length 92 [2024-10-24 02:59:31,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:31,828 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 292 transitions. [2024-10-24 02:59:31,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-10-24 02:59:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 292 transitions. [2024-10-24 02:59:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:59:31,829 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:31,829 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:31,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 02:59:32,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:32,030 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:32,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:32,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1816193057, now seen corresponding path program 1 times [2024-10-24 02:59:32,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:32,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505391321] [2024-10-24 02:59:32,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:32,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:32,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:32,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505391321] [2024-10-24 02:59:32,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505391321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:32,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:32,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:59:32,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594273439] [2024-10-24 02:59:32,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:32,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:59:32,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:32,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:59:32,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:59:32,165 INFO L87 Difference]: Start difference. First operand 186 states and 292 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-24 02:59:33,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:33,209 INFO L93 Difference]: Finished difference Result 659 states and 1060 transitions. [2024-10-24 02:59:33,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 02:59:33,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2024-10-24 02:59:33,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:33,211 INFO L225 Difference]: With dead ends: 659 [2024-10-24 02:59:33,211 INFO L226 Difference]: Without dead ends: 485 [2024-10-24 02:59:33,212 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 [2024-10-24 02:59:33,213 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 715 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:33,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 634 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 02:59:33,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-10-24 02:59:33,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 366. [2024-10-24 02:59:33,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 319 states have (on average 1.5956112852664577) internal successors, (509), 321 states have internal predecessors, (509), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2024-10-24 02:59:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 578 transitions. [2024-10-24 02:59:33,238 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 578 transitions. Word has length 91 [2024-10-24 02:59:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:33,239 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 578 transitions. [2024-10-24 02:59:33,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-24 02:59:33,239 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 578 transitions. [2024-10-24 02:59:33,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:59:33,240 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:33,240 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:33,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 02:59:33,240 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:33,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:33,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1065505243, now seen corresponding path program 1 times [2024-10-24 02:59:33,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:33,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919333312] [2024-10-24 02:59:33,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:33,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:33,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:33,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919333312] [2024-10-24 02:59:33,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919333312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:33,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:33,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:33,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89059126] [2024-10-24 02:59:33,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:33,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:33,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:33,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:33,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:33,377 INFO L87 Difference]: Start difference. First operand 366 states and 578 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:34,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:34,963 INFO L93 Difference]: Finished difference Result 1084 states and 1738 transitions. [2024-10-24 02:59:34,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:59:34,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-24 02:59:34,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:34,967 INFO L225 Difference]: With dead ends: 1084 [2024-10-24 02:59:34,967 INFO L226 Difference]: Without dead ends: 730 [2024-10-24 02:59:34,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-24 02:59:34,969 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 732 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:34,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1055 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 02:59:34,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-10-24 02:59:34,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 533. [2024-10-24 02:59:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 465 states have (on average 1.5870967741935484) internal successors, (738), 468 states have internal predecessors, (738), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2024-10-24 02:59:35,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 837 transitions. [2024-10-24 02:59:35,001 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 837 transitions. Word has length 91 [2024-10-24 02:59:35,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:35,001 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 837 transitions. [2024-10-24 02:59:35,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:35,001 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 837 transitions. [2024-10-24 02:59:35,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:59:35,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:35,002 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:35,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 02:59:35,002 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:35,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:35,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1152125155, now seen corresponding path program 1 times [2024-10-24 02:59:35,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:35,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055120245] [2024-10-24 02:59:35,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:35,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:35,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:35,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055120245] [2024-10-24 02:59:35,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055120245] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:35,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:35,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:35,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205409889] [2024-10-24 02:59:35,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:35,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:35,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:35,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:35,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:35,144 INFO L87 Difference]: Start difference. First operand 533 states and 837 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:35,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:35,860 INFO L93 Difference]: Finished difference Result 1255 states and 2011 transitions. [2024-10-24 02:59:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:59:35,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-24 02:59:35,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:35,864 INFO L225 Difference]: With dead ends: 1255 [2024-10-24 02:59:35,864 INFO L226 Difference]: Without dead ends: 734 [2024-10-24 02:59:35,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:59:35,866 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 536 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:35,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 535 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 02:59:35,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2024-10-24 02:59:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 533. [2024-10-24 02:59:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 465 states have (on average 1.5806451612903225) internal successors, (735), 468 states have internal predecessors, (735), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2024-10-24 02:59:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 834 transitions. [2024-10-24 02:59:35,904 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 834 transitions. Word has length 91 [2024-10-24 02:59:35,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:35,904 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 834 transitions. [2024-10-24 02:59:35,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:35,904 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 834 transitions. [2024-10-24 02:59:35,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:59:35,905 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:35,905 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:35,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 02:59:35,905 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:35,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:35,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2039348001, now seen corresponding path program 1 times [2024-10-24 02:59:35,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:35,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326009190] [2024-10-24 02:59:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:36,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:36,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326009190] [2024-10-24 02:59:36,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326009190] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:36,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:36,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:36,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584872402] [2024-10-24 02:59:36,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:36,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:36,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:36,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:36,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:36,010 INFO L87 Difference]: Start difference. First operand 533 states and 834 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:36,673 INFO L93 Difference]: Finished difference Result 1251 states and 1994 transitions. [2024-10-24 02:59:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:59:36,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-24 02:59:36,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:36,677 INFO L225 Difference]: With dead ends: 1251 [2024-10-24 02:59:36,677 INFO L226 Difference]: Without dead ends: 730 [2024-10-24 02:59:36,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:59:36,679 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 534 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:36,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 535 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 02:59:36,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-10-24 02:59:36,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 533. [2024-10-24 02:59:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 465 states have (on average 1.5741935483870968) internal successors, (732), 468 states have internal predecessors, (732), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2024-10-24 02:59:36,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 831 transitions. [2024-10-24 02:59:36,728 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 831 transitions. Word has length 91 [2024-10-24 02:59:36,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:36,728 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 831 transitions. [2024-10-24 02:59:36,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:36,729 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 831 transitions. [2024-10-24 02:59:36,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:59:36,729 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:36,729 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:36,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 02:59:36,730 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:36,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:36,730 INFO L85 PathProgramCache]: Analyzing trace with hash 128305443, now seen corresponding path program 1 times [2024-10-24 02:59:36,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:36,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562124334] [2024-10-24 02:59:36,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:36,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:36,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:36,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562124334] [2024-10-24 02:59:36,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562124334] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:36,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:36,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:36,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789587817] [2024-10-24 02:59:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:36,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:36,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:36,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:36,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:36,840 INFO L87 Difference]: Start difference. First operand 533 states and 831 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:37,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:37,386 INFO L93 Difference]: Finished difference Result 1247 states and 1977 transitions. [2024-10-24 02:59:37,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:59:37,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-24 02:59:37,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:37,389 INFO L225 Difference]: With dead ends: 1247 [2024-10-24 02:59:37,389 INFO L226 Difference]: Without dead ends: 726 [2024-10-24 02:59:37,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:59:37,391 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 607 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:37,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 448 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 02:59:37,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-10-24 02:59:37,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 533. [2024-10-24 02:59:37,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 465 states have (on average 1.5677419354838709) internal successors, (729), 468 states have internal predecessors, (729), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2024-10-24 02:59:37,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 828 transitions. [2024-10-24 02:59:37,425 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 828 transitions. Word has length 91 [2024-10-24 02:59:37,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:37,425 INFO L471 AbstractCegarLoop]: Abstraction has 533 states and 828 transitions. [2024-10-24 02:59:37,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:37,426 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 828 transitions. [2024-10-24 02:59:37,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:59:37,426 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:37,426 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:37,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 02:59:37,427 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:37,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:37,427 INFO L85 PathProgramCache]: Analyzing trace with hash 205206241, now seen corresponding path program 1 times [2024-10-24 02:59:37,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:37,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571844915] [2024-10-24 02:59:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:37,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:37,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:37,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:37,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:37,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:37,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:37,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:37,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571844915] [2024-10-24 02:59:37,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571844915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:37,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:37,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944387835] [2024-10-24 02:59:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:37,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:37,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:37,553 INFO L87 Difference]: Start difference. First operand 533 states and 828 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:38,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:38,803 INFO L93 Difference]: Finished difference Result 1829 states and 2877 transitions. [2024-10-24 02:59:38,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:59:38,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-24 02:59:38,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:38,809 INFO L225 Difference]: With dead ends: 1829 [2024-10-24 02:59:38,809 INFO L226 Difference]: Without dead ends: 1308 [2024-10-24 02:59:38,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:59:38,814 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 798 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:38,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 702 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1771 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 02:59:38,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2024-10-24 02:59:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 876. [2024-10-24 02:59:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 768 states have (on average 1.5598958333333333) internal successors, (1198), 773 states have internal predecessors, (1198), 73 states have call successors, (73), 30 states have call predecessors, (73), 34 states have return successors, (86), 76 states have call predecessors, (86), 73 states have call successors, (86) [2024-10-24 02:59:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1357 transitions. [2024-10-24 02:59:38,898 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1357 transitions. Word has length 91 [2024-10-24 02:59:38,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:38,898 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 1357 transitions. [2024-10-24 02:59:38,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:38,898 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1357 transitions. [2024-10-24 02:59:38,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:59:38,899 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:38,900 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:38,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 02:59:38,900 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:38,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:38,900 INFO L85 PathProgramCache]: Analyzing trace with hash -762144413, now seen corresponding path program 1 times [2024-10-24 02:59:38,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:38,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198388123] [2024-10-24 02:59:38,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:38,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:38,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:39,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:39,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:39,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:39,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:39,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198388123] [2024-10-24 02:59:39,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198388123] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:39,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:39,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:39,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246002087] [2024-10-24 02:59:39,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:39,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:39,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:39,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:39,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:39,026 INFO L87 Difference]: Start difference. First operand 876 states and 1357 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:40,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:40,440 INFO L93 Difference]: Finished difference Result 3112 states and 4876 transitions. [2024-10-24 02:59:40,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:59:40,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-24 02:59:40,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:40,447 INFO L225 Difference]: With dead ends: 3112 [2024-10-24 02:59:40,447 INFO L226 Difference]: Without dead ends: 2248 [2024-10-24 02:59:40,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:59:40,449 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 857 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:40,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1042 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 02:59:40,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248 states. [2024-10-24 02:59:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2248 to 1533. [2024-10-24 02:59:40,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1347 states have (on average 1.5515961395694136) internal successors, (2090), 1356 states have internal predecessors, (2090), 123 states have call successors, (123), 54 states have call predecessors, (123), 62 states have return successors, (158), 130 states have call predecessors, (158), 123 states have call successors, (158) [2024-10-24 02:59:40,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2371 transitions. [2024-10-24 02:59:40,543 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2371 transitions. Word has length 91 [2024-10-24 02:59:40,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:40,543 INFO L471 AbstractCegarLoop]: Abstraction has 1533 states and 2371 transitions. [2024-10-24 02:59:40,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:40,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2371 transitions. [2024-10-24 02:59:40,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:59:40,544 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:40,545 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:40,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 02:59:40,545 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:40,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:40,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1146313377, now seen corresponding path program 1 times [2024-10-24 02:59:40,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:40,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607384627] [2024-10-24 02:59:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:40,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:40,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:40,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:40,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:40,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:40,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:40,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607384627] [2024-10-24 02:59:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607384627] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:40,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:40,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387296760] [2024-10-24 02:59:40,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:40,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:40,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:40,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:40,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:40,652 INFO L87 Difference]: Start difference. First operand 1533 states and 2371 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:41,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:41,390 INFO L93 Difference]: Finished difference Result 3507 states and 5494 transitions. [2024-10-24 02:59:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:59:41,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-24 02:59:41,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:41,397 INFO L225 Difference]: With dead ends: 3507 [2024-10-24 02:59:41,397 INFO L226 Difference]: Without dead ends: 1986 [2024-10-24 02:59:41,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:59:41,401 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 530 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:41,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 534 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 02:59:41,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2024-10-24 02:59:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1533. [2024-10-24 02:59:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1347 states have (on average 1.5449146250927988) internal successors, (2081), 1356 states have internal predecessors, (2081), 123 states have call successors, (123), 54 states have call predecessors, (123), 62 states have return successors, (158), 130 states have call predecessors, (158), 123 states have call successors, (158) [2024-10-24 02:59:41,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2362 transitions. [2024-10-24 02:59:41,497 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2362 transitions. Word has length 91 [2024-10-24 02:59:41,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:41,497 INFO L471 AbstractCegarLoop]: Abstraction has 1533 states and 2362 transitions. [2024-10-24 02:59:41,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:41,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2362 transitions. [2024-10-24 02:59:41,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:59:41,499 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:41,499 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:41,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 02:59:41,499 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:41,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:41,499 INFO L85 PathProgramCache]: Analyzing trace with hash 653687203, now seen corresponding path program 1 times [2024-10-24 02:59:41,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:41,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189244142] [2024-10-24 02:59:41,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:41,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:41,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:41,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189244142] [2024-10-24 02:59:41,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189244142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:41,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:41,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:41,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886977675] [2024-10-24 02:59:41,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:41,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:41,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:41,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:41,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:41,636 INFO L87 Difference]: Start difference. First operand 1533 states and 2362 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:42,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:42,976 INFO L93 Difference]: Finished difference Result 5449 states and 8476 transitions. [2024-10-24 02:59:42,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:59:42,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-24 02:59:42,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:42,989 INFO L225 Difference]: With dead ends: 5449 [2024-10-24 02:59:42,990 INFO L226 Difference]: Without dead ends: 3928 [2024-10-24 02:59:42,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:59:42,994 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 786 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:42,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 1046 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 02:59:42,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2024-10-24 02:59:43,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 2875. [2024-10-24 02:59:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2537 states have (on average 1.5392195506503745) internal successors, (3905), 2554 states have internal predecessors, (3905), 219 states have call successors, (219), 102 states have call predecessors, (219), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2024-10-24 02:59:43,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4440 transitions. [2024-10-24 02:59:43,192 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4440 transitions. Word has length 91 [2024-10-24 02:59:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:43,192 INFO L471 AbstractCegarLoop]: Abstraction has 2875 states and 4440 transitions. [2024-10-24 02:59:43,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4440 transitions. [2024-10-24 02:59:43,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:59:43,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:43,194 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:43,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 02:59:43,195 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:43,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:43,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1607627361, now seen corresponding path program 1 times [2024-10-24 02:59:43,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:43,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983757888] [2024-10-24 02:59:43,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:43,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:43,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:43,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983757888] [2024-10-24 02:59:43,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983757888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:43,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:43,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:43,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433340019] [2024-10-24 02:59:43,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:43,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:43,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:43,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:43,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:43,292 INFO L87 Difference]: Start difference. First operand 2875 states and 4440 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:44,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:44,061 INFO L93 Difference]: Finished difference Result 6481 states and 10113 transitions. [2024-10-24 02:59:44,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:59:44,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-24 02:59:44,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:44,076 INFO L225 Difference]: With dead ends: 6481 [2024-10-24 02:59:44,076 INFO L226 Difference]: Without dead ends: 3618 [2024-10-24 02:59:44,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-24 02:59:44,085 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 530 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:44,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 534 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 02:59:44,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2024-10-24 02:59:44,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 2875. [2024-10-24 02:59:44,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2537 states have (on average 1.5325187229010642) internal successors, (3888), 2554 states have internal predecessors, (3888), 219 states have call successors, (219), 102 states have call predecessors, (219), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2024-10-24 02:59:44,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4423 transitions. [2024-10-24 02:59:44,321 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4423 transitions. Word has length 91 [2024-10-24 02:59:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:44,321 INFO L471 AbstractCegarLoop]: Abstraction has 2875 states and 4423 transitions. [2024-10-24 02:59:44,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:44,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4423 transitions. [2024-10-24 02:59:44,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:59:44,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:44,325 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:44,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 02:59:44,326 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:44,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:44,326 INFO L85 PathProgramCache]: Analyzing trace with hash 875659935, now seen corresponding path program 1 times [2024-10-24 02:59:44,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:44,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691676574] [2024-10-24 02:59:44,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:44,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:44,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:44,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:44,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:44,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:44,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:44,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:44,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691676574] [2024-10-24 02:59:44,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691676574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:44,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:44,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:59:44,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588046595] [2024-10-24 02:59:44,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:44,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:59:44,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:44,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:59:44,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:59:44,417 INFO L87 Difference]: Start difference. First operand 2875 states and 4423 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-24 02:59:45,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:45,280 INFO L93 Difference]: Finished difference Result 6478 states and 10089 transitions. [2024-10-24 02:59:45,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:59:45,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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 91 [2024-10-24 02:59:45,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:45,295 INFO L225 Difference]: With dead ends: 6478 [2024-10-24 02:59:45,295 INFO L226 Difference]: Without dead ends: 3616 [2024-10-24 02:59:45,301 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-24 02:59:45,302 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 237 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:45,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 607 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 02:59:45,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2024-10-24 02:59:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 2909. [2024-10-24 02:59:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2909 states, 2571 states have (on average 1.5254764683002722) internal successors, (3922), 2588 states have internal predecessors, (3922), 219 states have call successors, (219), 102 states have call predecessors, (219), 118 states have return successors, (316), 234 states have call predecessors, (316), 219 states have call successors, (316) [2024-10-24 02:59:45,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 4457 transitions. [2024-10-24 02:59:45,525 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 4457 transitions. Word has length 91 [2024-10-24 02:59:45,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:45,525 INFO L471 AbstractCegarLoop]: Abstraction has 2909 states and 4457 transitions. [2024-10-24 02:59:45,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-24 02:59:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 4457 transitions. [2024-10-24 02:59:45,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:59:45,527 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:45,527 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:45,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 02:59:45,528 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:45,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1309389021, now seen corresponding path program 1 times [2024-10-24 02:59:45,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:45,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244397926] [2024-10-24 02:59:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:45,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:45,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:45,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:45,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:45,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:45,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:45,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:45,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:45,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244397926] [2024-10-24 02:59:45,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244397926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:45,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:45,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:45,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586651184] [2024-10-24 02:59:45,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:45,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:45,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:45,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:45,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:45,643 INFO L87 Difference]: Start difference. First operand 2909 states and 4457 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:47,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:47,852 INFO L93 Difference]: Finished difference Result 13496 states and 21304 transitions. [2024-10-24 02:59:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 02:59:47,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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 91 [2024-10-24 02:59:47,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:47,893 INFO L225 Difference]: With dead ends: 13496 [2024-10-24 02:59:47,893 INFO L226 Difference]: Without dead ends: 10600 [2024-10-24 02:59:47,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2024-10-24 02:59:47,906 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 1884 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:47,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1904 Valid, 891 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 02:59:47,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10600 states. [2024-10-24 02:59:48,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10600 to 8574. [2024-10-24 02:59:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8574 states, 7567 states have (on average 1.516585172459363) internal successors, (11476), 7643 states have internal predecessors, (11476), 646 states have call successors, (646), 312 states have call predecessors, (646), 360 states have return successors, (1067), 634 states have call predecessors, (1067), 646 states have call successors, (1067) [2024-10-24 02:59:48,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8574 states to 8574 states and 13189 transitions. [2024-10-24 02:59:48,664 INFO L78 Accepts]: Start accepts. Automaton has 8574 states and 13189 transitions. Word has length 91 [2024-10-24 02:59:48,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:48,665 INFO L471 AbstractCegarLoop]: Abstraction has 8574 states and 13189 transitions. [2024-10-24 02:59:48,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-10-24 02:59:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand 8574 states and 13189 transitions. [2024-10-24 02:59:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-24 02:59:48,677 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:48,677 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:48,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 02:59:48,677 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:48,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:48,678 INFO L85 PathProgramCache]: Analyzing trace with hash -278492410, now seen corresponding path program 1 times [2024-10-24 02:59:48,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:48,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760671702] [2024-10-24 02:59:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:48,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 02:59:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-24 02:59:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-24 02:59:48,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:48,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760671702] [2024-10-24 02:59:48,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760671702] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:48,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534025594] [2024-10-24 02:59:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:48,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:48,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:48,790 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:48,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 02:59:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:48,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:48,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-24 02:59:48,936 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:48,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534025594] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:48,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:48,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 02:59:48,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738029728] [2024-10-24 02:59:48,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:48,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:48,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:48,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:48,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:48,937 INFO L87 Difference]: Start difference. First operand 8574 states and 13189 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2024-10-24 02:59:50,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:50,146 INFO L93 Difference]: Finished difference Result 25487 states and 39605 transitions. [2024-10-24 02:59:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:50,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2024-10-24 02:59:50,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:50,198 INFO L225 Difference]: With dead ends: 25487 [2024-10-24 02:59:50,198 INFO L226 Difference]: Without dead ends: 16926 [2024-10-24 02:59:50,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:50,220 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 233 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:50,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 497 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:59:50,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16926 states. [2024-10-24 02:59:51,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16926 to 16872. [2024-10-24 02:59:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16872 states, 14915 states have (on average 1.5133087495809587) internal successors, (22571), 15066 states have internal predecessors, (22571), 1236 states have call successors, (1236), 624 states have call predecessors, (1236), 720 states have return successors, (2036), 1197 states have call predecessors, (2036), 1236 states have call successors, (2036) [2024-10-24 02:59:51,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16872 states to 16872 states and 25843 transitions. [2024-10-24 02:59:51,720 INFO L78 Accepts]: Start accepts. Automaton has 16872 states and 25843 transitions. Word has length 147 [2024-10-24 02:59:51,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:51,721 INFO L471 AbstractCegarLoop]: Abstraction has 16872 states and 25843 transitions. [2024-10-24 02:59:51,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 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) [2024-10-24 02:59:51,721 INFO L276 IsEmpty]: Start isEmpty. Operand 16872 states and 25843 transitions. [2024-10-24 02:59:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-24 02:59:51,739 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:51,739 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:51,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 02:59:51,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-24 02:59:51,941 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:51,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:51,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1743474172, now seen corresponding path program 1 times [2024-10-24 02:59:51,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:51,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472735149] [2024-10-24 02:59:51,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:51,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:51,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:51,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 02:59:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-24 02:59:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-24 02:59:52,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:52,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472735149] [2024-10-24 02:59:52,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472735149] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:52,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564050876] [2024-10-24 02:59:52,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:52,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:52,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:52,048 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:52,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 02:59:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:52,149 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:52,202 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 02:59:52,203 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:52,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564050876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:52,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:52,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 02:59:52,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614605058] [2024-10-24 02:59:52,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:52,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:52,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:52,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:52,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:52,205 INFO L87 Difference]: Start difference. First operand 16872 states and 25843 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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) [2024-10-24 02:59:55,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:55,015 INFO L93 Difference]: Finished difference Result 50269 states and 77826 transitions. [2024-10-24 02:59:55,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:55,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2024-10-24 02:59:55,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:55,110 INFO L225 Difference]: With dead ends: 50269 [2024-10-24 02:59:55,110 INFO L226 Difference]: Without dead ends: 33410 [2024-10-24 02:59:55,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:55,142 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 223 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:55,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 497 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:59:55,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33410 states. [2024-10-24 02:59:57,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33410 to 33304. [2024-10-24 02:59:57,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33304 states, 29451 states have (on average 1.509116838137924) internal successors, (44445), 29752 states have internal predecessors, (44445), 2412 states have call successors, (2412), 1248 states have call predecessors, (2412), 1440 states have return successors, (3967), 2319 states have call predecessors, (3967), 2412 states have call successors, (3967) [2024-10-24 02:59:57,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33304 states to 33304 states and 50824 transitions. [2024-10-24 02:59:57,784 INFO L78 Accepts]: Start accepts. Automaton has 33304 states and 50824 transitions. Word has length 147 [2024-10-24 02:59:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:57,784 INFO L471 AbstractCegarLoop]: Abstraction has 33304 states and 50824 transitions. [2024-10-24 02:59:57,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 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) [2024-10-24 02:59:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 33304 states and 50824 transitions. [2024-10-24 02:59:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-10-24 02:59:57,823 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:57,823 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:57,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 02:59:58,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:58,025 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:58,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:58,025 INFO L85 PathProgramCache]: Analyzing trace with hash 867819138, now seen corresponding path program 1 times [2024-10-24 02:59:58,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:58,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096514434] [2024-10-24 02:59:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:58,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:58,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:58,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 02:59:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:58,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 02:59:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:58,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 02:59:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:58,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 02:59:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:58,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 02:59:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:58,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:58,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-24 02:59:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:58,135 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-24 02:59:58,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:58,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096514434] [2024-10-24 02:59:58,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096514434] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:58,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216423888] [2024-10-24 02:59:58,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:58,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:58,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:58,138 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:59:58,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 02:59:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:58,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:58,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-24 02:59:58,404 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:58,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216423888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:58,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:58,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:59:58,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822773166] [2024-10-24 02:59:58,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:58,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:58,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:58,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:58,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:58,407 INFO L87 Difference]: Start difference. First operand 33304 states and 50824 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-10-24 03:00:04,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:04,313 INFO L93 Difference]: Finished difference Result 98827 states and 151505 transitions. [2024-10-24 03:00:04,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:00:04,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 147 [2024-10-24 03:00:04,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:04,473 INFO L225 Difference]: With dead ends: 98827 [2024-10-24 03:00:04,474 INFO L226 Difference]: Without dead ends: 39112 [2024-10-24 03:00:04,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:00:04,560 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 254 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:04,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 760 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:00:04,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39112 states. [2024-10-24 03:00:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39112 to 39112. [2024-10-24 03:00:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39112 states, 34599 states have (on average 1.508136073296916) internal successors, (52180), 34932 states have internal predecessors, (52180), 2824 states have call successors, (2824), 1464 states have call predecessors, (2824), 1688 states have return successors, (4687), 2731 states have call predecessors, (4687), 2824 states have call successors, (4687) [2024-10-24 03:00:07,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39112 states to 39112 states and 59691 transitions. [2024-10-24 03:00:07,671 INFO L78 Accepts]: Start accepts. Automaton has 39112 states and 59691 transitions. Word has length 147 [2024-10-24 03:00:07,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:07,671 INFO L471 AbstractCegarLoop]: Abstraction has 39112 states and 59691 transitions. [2024-10-24 03:00:07,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-10-24 03:00:07,672 INFO L276 IsEmpty]: Start isEmpty. Operand 39112 states and 59691 transitions. [2024-10-24 03:00:07,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-10-24 03:00:07,722 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:07,723 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:00:07,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 03:00:07,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:07,923 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:07,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:07,924 INFO L85 PathProgramCache]: Analyzing trace with hash -627767361, now seen corresponding path program 1 times [2024-10-24 03:00:07,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:07,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128143705] [2024-10-24 03:00:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:07,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:00:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:07,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 03:00:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:08,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 03:00:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:08,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 03:00:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:08,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 03:00:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:08,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 03:00:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:08,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:08,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-24 03:00:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:08,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:08,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-24 03:00:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-10-24 03:00:08,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128143705] [2024-10-24 03:00:08,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128143705] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:00:08,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404645358] [2024-10-24 03:00:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:08,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:08,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:00:08,046 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:00:08,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 03:00:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:08,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:00:08,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:00:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 03:00:08,263 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:00:08,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404645358] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:08,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:00:08,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 03:00:08,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275910064] [2024-10-24 03:00:08,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:08,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:00:08,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:08,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:00:08,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:00:08,266 INFO L87 Difference]: Start difference. First operand 39112 states and 59691 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 03:00:12,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:12,302 INFO L93 Difference]: Finished difference Result 79956 states and 123277 transitions. [2024-10-24 03:00:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:00:12,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 190 [2024-10-24 03:00:12,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:12,484 INFO L225 Difference]: With dead ends: 79956 [2024-10-24 03:00:12,485 INFO L226 Difference]: Without dead ends: 56498 [2024-10-24 03:00:12,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:00:12,547 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 169 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:12,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 540 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:00:12,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56498 states. [2024-10-24 03:00:16,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56498 to 56284. [2024-10-24 03:00:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56284 states, 49827 states have (on average 1.5079374636241396) internal successors, (75136), 50292 states have internal predecessors, (75136), 4024 states have call successors, (4024), 2112 states have call predecessors, (4024), 2432 states have return successors, (6579), 3895 states have call predecessors, (6579), 4024 states have call successors, (6579) [2024-10-24 03:00:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56284 states to 56284 states and 85739 transitions. [2024-10-24 03:00:17,047 INFO L78 Accepts]: Start accepts. Automaton has 56284 states and 85739 transitions. Word has length 190 [2024-10-24 03:00:17,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:17,048 INFO L471 AbstractCegarLoop]: Abstraction has 56284 states and 85739 transitions. [2024-10-24 03:00:17,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 03:00:17,048 INFO L276 IsEmpty]: Start isEmpty. Operand 56284 states and 85739 transitions. [2024-10-24 03:00:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-10-24 03:00:17,108 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:17,108 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:00:17,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 03:00:17,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-24 03:00:17,309 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:17,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1773757760, now seen corresponding path program 1 times [2024-10-24 03:00:17,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:17,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753267066] [2024-10-24 03:00:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:17,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:17,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:00:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:17,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-24 03:00:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:17,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-24 03:00:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:17,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 03:00:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:17,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-24 03:00:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:17,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-24 03:00:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:17,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:17,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-24 03:00:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:17,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:17,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-24 03:00:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 03:00:17,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:17,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753267066] [2024-10-24 03:00:17,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753267066] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:00:17,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087718875] [2024-10-24 03:00:17,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:17,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:17,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:00:17,459 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 03:00:17,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 03:00:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:17,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:00:17,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:00:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-24 03:00:17,667 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:00:17,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087718875] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:17,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:00:17,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 03:00:17,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544034577] [2024-10-24 03:00:17,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:17,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:00:17,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:17,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:00:17,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:00:17,668 INFO L87 Difference]: Start difference. First operand 56284 states and 85739 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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)