./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.04.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.04.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 82bdcd0599c1cc352b3450b4e917b8a69eeb254589d3b948d4951dae1b33e3d4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:59:21,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:59:21,816 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:59:21,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:59:21,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:59:21,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:59:21,852 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:59:21,852 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:59:21,853 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:59:21,853 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:59:21,853 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:59:21,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:59:21,854 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:59:21,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:59:21,855 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:59:21,855 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:59:21,856 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:59:21,860 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:59:21,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:59:21,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:59:21,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:59:21,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:59:21,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:59:21,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:59:21,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:59:21,863 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:59:21,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:59:21,863 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:59:21,864 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:59:21,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:59:21,864 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:59:21,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:59:21,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:59:21,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:59:21,866 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:59:21,866 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:59:21,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:59:21,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:59:21,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:59:21,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:59:21,867 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:59:21,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:59:21,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82bdcd0599c1cc352b3450b4e917b8a69eeb254589d3b948d4951dae1b33e3d4 [2024-10-24 02:59:22,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:59:22,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:59:22,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:59:22,197 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:59:22,198 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:59:22,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2024-10-24 02:59:23,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:59:23,938 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:59:23,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2024-10-24 02:59:23,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7855ba29e/d2bd1353bd5a40f5989d0028e5b9bbe7/FLAG075f8ef5e [2024-10-24 02:59:23,967 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7855ba29e/d2bd1353bd5a40f5989d0028e5b9bbe7 [2024-10-24 02:59:23,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:59:23,970 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:59:23,972 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:59:23,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:59:23,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:59:23,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:59:23" (1/1) ... [2024-10-24 02:59:23,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79fcc21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:23, skipping insertion in model container [2024-10-24 02:59:23,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:59:23" (1/1) ... [2024-10-24 02:59:24,019 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:59:24,188 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.04.cil-1.c[913,926] [2024-10-24 02:59:24,244 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.04.cil-1.c[5977,5990] [2024-10-24 02:59:24,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:59:24,385 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:59:24,397 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.04.cil-1.c[913,926] [2024-10-24 02:59:24,417 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.04.cil-1.c[5977,5990] [2024-10-24 02:59:24,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:59:24,479 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:59:24,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:59:24 WrapperNode [2024-10-24 02:59:24,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:59:24,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:59:24,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:59:24,482 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:59:24,488 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 02:59:24,498 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 02:59:24,533 INFO L138 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 603 [2024-10-24 02:59:24,533 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:59:24,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:59:24,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:59:24,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:59:24,545 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 02:59:24,545 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 02:59:24,550 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 02:59:24,571 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 02:59:24,571 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 02:59:24,572 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 02:59:24,588 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 02:59:24,596 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 02:59:24,599 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 02:59:24,601 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 02:59:24,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:59:24,607 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:59:24,608 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:59:24,608 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:59:24,609 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 02:59:24,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:59:24,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:24,649 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 02:59:24,656 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 02:59:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:59:24,707 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-24 02:59:24,707 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-24 02:59:24,708 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-10-24 02:59:24,709 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-10-24 02:59:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-10-24 02:59:24,710 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-10-24 02:59:24,710 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-10-24 02:59:24,711 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-10-24 02:59:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-10-24 02:59:24,711 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-10-24 02:59:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-10-24 02:59:24,711 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-10-24 02:59:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-10-24 02:59:24,711 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-10-24 02:59:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:59:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-10-24 02:59:24,712 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-10-24 02:59:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:59:24,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:59:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-10-24 02:59:24,713 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-10-24 02:59:24,840 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:59:24,844 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:59:25,527 INFO L? ?]: Removed 79 outVars from TransFormulas that were not future-live. [2024-10-24 02:59:25,527 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:59:25,592 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:59:25,593 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-24 02:59:25,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:59:25 BoogieIcfgContainer [2024-10-24 02:59:25,593 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:59:25,598 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:59:25,598 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:59:25,602 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:59:25,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:59:23" (1/3) ... [2024-10-24 02:59:25,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5860de9c 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 02:59:25,603 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 02:59:25,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5860de9c 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 02:59:25,603 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 02:59:25,604 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2024-10-24 02:59:25,623 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:59:25,623 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:59:25,724 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:59:25,731 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;@655db6df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:59:25,735 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:59:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 227 states, 191 states have (on average 1.6806282722513088) internal successors, (321), 196 states have internal predecessors, (321), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-24 02:59:25,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-24 02:59:25,751 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:25,752 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 02:59:25,753 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:25,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:25,759 INFO L85 PathProgramCache]: Analyzing trace with hash 330085048, now seen corresponding path program 1 times [2024-10-24 02:59:25,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:25,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939777340] [2024-10-24 02:59:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:25,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,128 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 02:59:26,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:26,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939777340] [2024-10-24 02:59:26,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939777340] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:26,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:26,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:26,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585475484] [2024-10-24 02:59:26,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:26,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:26,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:26,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:26,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:26,172 INFO L87 Difference]: Start difference. First operand has 227 states, 191 states have (on average 1.6806282722513088) internal successors, (321), 196 states have internal predecessors, (321), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) 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 02:59:26,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:26,721 INFO L93 Difference]: Finished difference Result 503 states and 818 transitions. [2024-10-24 02:59:26,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:26,724 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 02:59:26,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:26,737 INFO L225 Difference]: With dead ends: 503 [2024-10-24 02:59:26,738 INFO L226 Difference]: Without dead ends: 285 [2024-10-24 02:59:26,743 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 02:59:26,746 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 430 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:26,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 432 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 02:59:26,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-10-24 02:59:26,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 279. [2024-10-24 02:59:26,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 238 states have (on average 1.5210084033613445) internal successors, (362), 242 states have internal predecessors, (362), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (32), 26 states have call predecessors, (32), 26 states have call successors, (32) [2024-10-24 02:59:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 422 transitions. [2024-10-24 02:59:26,842 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 422 transitions. Word has length 37 [2024-10-24 02:59:26,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:26,843 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 422 transitions. [2024-10-24 02:59:26,843 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 02:59:26,843 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 422 transitions. [2024-10-24 02:59:26,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-24 02:59:26,847 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:26,847 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 02:59:26,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:59:26,848 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:26,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:26,849 INFO L85 PathProgramCache]: Analyzing trace with hash -595157381, now seen corresponding path program 1 times [2024-10-24 02:59:26,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:26,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552933564] [2024-10-24 02:59:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:26,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 02:59:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:26,972 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 02:59:26,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:26,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552933564] [2024-10-24 02:59:26,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552933564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:26,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:26,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:26,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223742119] [2024-10-24 02:59:26,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:26,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:26,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:26,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:26,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:26,980 INFO L87 Difference]: Start difference. First operand 279 states and 422 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 02:59:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:27,410 INFO L93 Difference]: Finished difference Result 513 states and 766 transitions. [2024-10-24 02:59:27,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:27,411 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 02:59:27,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:27,416 INFO L225 Difference]: With dead ends: 513 [2024-10-24 02:59:27,416 INFO L226 Difference]: Without dead ends: 402 [2024-10-24 02:59:27,418 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 02:59:27,419 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 443 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:27,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 425 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:59:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2024-10-24 02:59:27,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 379. [2024-10-24 02:59:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 325 states have (on average 1.476923076923077) internal successors, (480), 330 states have internal predecessors, (480), 36 states have call successors, (36), 15 states have call predecessors, (36), 16 states have return successors, (46), 34 states have call predecessors, (46), 34 states have call successors, (46) [2024-10-24 02:59:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 562 transitions. [2024-10-24 02:59:27,457 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 562 transitions. Word has length 38 [2024-10-24 02:59:27,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:27,457 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 562 transitions. [2024-10-24 02:59:27,458 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 02:59:27,458 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 562 transitions. [2024-10-24 02:59:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-24 02:59:27,460 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:27,461 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 02:59:27,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:59:27,461 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:27,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:27,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1757828978, now seen corresponding path program 1 times [2024-10-24 02:59:27,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:27,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133116653] [2024-10-24 02:59:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:27,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 02:59:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:27,534 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 02:59:27,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:27,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133116653] [2024-10-24 02:59:27,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133116653] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:27,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:27,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:27,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757261947] [2024-10-24 02:59:27,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:27,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:27,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:27,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:27,538 INFO L87 Difference]: Start difference. First operand 379 states and 562 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 02:59:27,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:27,970 INFO L93 Difference]: Finished difference Result 799 states and 1143 transitions. [2024-10-24 02:59:27,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:27,971 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 02:59:27,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:27,981 INFO L225 Difference]: With dead ends: 799 [2024-10-24 02:59:27,981 INFO L226 Difference]: Without dead ends: 588 [2024-10-24 02:59:27,983 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 02:59:27,986 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 194 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:27,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 579 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 02:59:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-10-24 02:59:28,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 484. [2024-10-24 02:59:28,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 418 states have (on average 1.4569377990430623) internal successors, (609), 425 states have internal predecessors, (609), 42 states have call successors, (42), 21 states have call predecessors, (42), 22 states have return successors, (52), 38 states have call predecessors, (52), 40 states have call successors, (52) [2024-10-24 02:59:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 703 transitions. [2024-10-24 02:59:28,058 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 703 transitions. Word has length 39 [2024-10-24 02:59:28,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:28,058 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 703 transitions. [2024-10-24 02:59:28,059 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 02:59:28,059 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 703 transitions. [2024-10-24 02:59:28,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 02:59:28,062 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:28,063 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 02:59:28,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:59:28,063 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:28,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash 586677091, now seen corresponding path program 1 times [2024-10-24 02:59:28,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:28,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591811929] [2024-10-24 02:59:28,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:28,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 02:59:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,192 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 02:59:28,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:28,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591811929] [2024-10-24 02:59:28,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591811929] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:28,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:28,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:28,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145317544] [2024-10-24 02:59:28,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:28,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:28,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:28,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:28,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:28,195 INFO L87 Difference]: Start difference. First operand 484 states and 703 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 02:59:28,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:28,577 INFO L93 Difference]: Finished difference Result 1000 states and 1420 transitions. [2024-10-24 02:59:28,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:28,578 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 02:59:28,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:28,583 INFO L225 Difference]: With dead ends: 1000 [2024-10-24 02:59:28,583 INFO L226 Difference]: Without dead ends: 684 [2024-10-24 02:59:28,585 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 02:59:28,586 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 179 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:28,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 626 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:59:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2024-10-24 02:59:28,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 650. [2024-10-24 02:59:28,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 560 states have (on average 1.4017857142857142) internal successors, (785), 569 states have internal predecessors, (785), 56 states have call successors, (56), 29 states have call predecessors, (56), 32 states have return successors, (76), 52 states have call predecessors, (76), 54 states have call successors, (76) [2024-10-24 02:59:28,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 917 transitions. [2024-10-24 02:59:28,637 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 917 transitions. Word has length 54 [2024-10-24 02:59:28,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:28,638 INFO L471 AbstractCegarLoop]: Abstraction has 650 states and 917 transitions. [2024-10-24 02:59:28,638 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 02:59:28,638 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 917 transitions. [2024-10-24 02:59:28,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-24 02:59:28,643 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:28,643 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 02:59:28,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:59:28,644 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:28,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1504425029, now seen corresponding path program 1 times [2024-10-24 02:59:28,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:28,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52236756] [2024-10-24 02:59:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:28,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:59:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 02:59:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:28,730 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 02:59:28,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:28,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52236756] [2024-10-24 02:59:28,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52236756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:28,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:28,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:28,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770955755] [2024-10-24 02:59:28,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:28,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:28,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:28,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:28,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:28,733 INFO L87 Difference]: Start difference. First operand 650 states and 917 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 02:59:29,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:29,058 INFO L93 Difference]: Finished difference Result 1229 states and 1696 transitions. [2024-10-24 02:59:29,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:29,059 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 02:59:29,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:29,066 INFO L225 Difference]: With dead ends: 1229 [2024-10-24 02:59:29,066 INFO L226 Difference]: Without dead ends: 827 [2024-10-24 02:59:29,070 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 02:59:29,071 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 429 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:29,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 437 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:59:29,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-10-24 02:59:29,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 778. [2024-10-24 02:59:29,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 672 states have (on average 1.369047619047619) internal successors, (920), 683 states have internal predecessors, (920), 64 states have call successors, (64), 35 states have call predecessors, (64), 40 states have return successors, (90), 60 states have call predecessors, (90), 62 states have call successors, (90) [2024-10-24 02:59:29,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1074 transitions. [2024-10-24 02:59:29,133 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1074 transitions. Word has length 59 [2024-10-24 02:59:29,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:29,133 INFO L471 AbstractCegarLoop]: Abstraction has 778 states and 1074 transitions. [2024-10-24 02:59:29,133 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 02:59:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1074 transitions. [2024-10-24 02:59:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 02:59:29,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:29,136 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 02:59:29,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:59:29,136 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:29,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:29,137 INFO L85 PathProgramCache]: Analyzing trace with hash 732425990, now seen corresponding path program 1 times [2024-10-24 02:59:29,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:29,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132936519] [2024-10-24 02:59:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:29,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:59:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,261 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 02:59:29,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:29,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132936519] [2024-10-24 02:59:29,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132936519] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:29,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117449155] [2024-10-24 02:59:29,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:29,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:29,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:29,267 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 02:59:29,270 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 02:59:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 02:59:29,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:29,398 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 02:59:29,400 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:29,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117449155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:29,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:29,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-10-24 02:59:29,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953887889] [2024-10-24 02:59:29,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:29,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:29,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:29,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:29,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:29,402 INFO L87 Difference]: Start difference. First operand 778 states and 1074 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 02:59:29,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:29,512 INFO L93 Difference]: Finished difference Result 1266 states and 1748 transitions. [2024-10-24 02:59:29,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:59:29,513 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 02:59:29,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:29,517 INFO L225 Difference]: With dead ends: 1266 [2024-10-24 02:59:29,517 INFO L226 Difference]: Without dead ends: 783 [2024-10-24 02:59:29,518 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 02:59:29,519 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 0 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:29,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 925 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:59:29,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2024-10-24 02:59:29,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2024-10-24 02:59:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 677 states have (on average 1.3545051698670605) internal successors, (917), 688 states have internal predecessors, (917), 64 states have call successors, (64), 35 states have call predecessors, (64), 40 states have return successors, (90), 60 states have call predecessors, (90), 62 states have call successors, (90) [2024-10-24 02:59:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1071 transitions. [2024-10-24 02:59:29,588 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1071 transitions. Word has length 60 [2024-10-24 02:59:29,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:29,589 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1071 transitions. [2024-10-24 02:59:29,589 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 02:59:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1071 transitions. [2024-10-24 02:59:29,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 02:59:29,591 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:29,591 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 02:59:29,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 02:59:29,791 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 02:59:29,792 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:29,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:29,792 INFO L85 PathProgramCache]: Analyzing trace with hash -111579512, now seen corresponding path program 1 times [2024-10-24 02:59:29,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:29,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058177091] [2024-10-24 02:59:29,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:29,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:59:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:29,903 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 02:59:29,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:29,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058177091] [2024-10-24 02:59:29,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058177091] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:29,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648531082] [2024-10-24 02:59:29,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:29,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:29,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:29,912 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 02:59:29,913 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 02:59:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 02:59:30,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:30,017 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 02:59:30,017 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:30,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648531082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:30,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:30,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2024-10-24 02:59:30,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47075993] [2024-10-24 02:59:30,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:30,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:30,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:30,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:30,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:30,020 INFO L87 Difference]: Start difference. First operand 783 states and 1071 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 02:59:30,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:30,129 INFO L93 Difference]: Finished difference Result 1209 states and 1650 transitions. [2024-10-24 02:59:30,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:59:30,129 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 02:59:30,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:30,133 INFO L225 Difference]: With dead ends: 1209 [2024-10-24 02:59:30,134 INFO L226 Difference]: Without dead ends: 680 [2024-10-24 02:59:30,135 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 02:59:30,138 INFO L432 NwaCegarLoop]: 310 mSDtfsCounter, 0 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:30,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 925 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:59:30,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2024-10-24 02:59:30,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 673. [2024-10-24 02:59:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 585 states have (on average 1.3572649572649573) internal successors, (794), 594 states have internal predecessors, (794), 54 states have call successors, (54), 29 states have call predecessors, (54), 32 states have return successors, (71), 50 states have call predecessors, (71), 52 states have call successors, (71) [2024-10-24 02:59:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 919 transitions. [2024-10-24 02:59:30,175 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 919 transitions. Word has length 60 [2024-10-24 02:59:30,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:30,176 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 919 transitions. [2024-10-24 02:59:30,177 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 02:59:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 919 transitions. [2024-10-24 02:59:30,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 02:59:30,178 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:30,178 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 02:59:30,197 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 02:59:30,379 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 02:59:30,380 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:30,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:30,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1686060104, now seen corresponding path program 1 times [2024-10-24 02:59:30,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:30,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907654617] [2024-10-24 02:59:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:30,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:59:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,484 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 02:59:30,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:30,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907654617] [2024-10-24 02:59:30,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907654617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:30,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:30,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:59:30,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960024976] [2024-10-24 02:59:30,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:30,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:59:30,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:30,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:59:30,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:30,486 INFO L87 Difference]: Start difference. First operand 673 states and 919 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 02:59:30,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:30,835 INFO L93 Difference]: Finished difference Result 758 states and 1022 transitions. [2024-10-24 02:59:30,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:59:30,836 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 02:59:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:30,840 INFO L225 Difference]: With dead ends: 758 [2024-10-24 02:59:30,840 INFO L226 Difference]: Without dead ends: 755 [2024-10-24 02:59:30,841 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 02:59:30,841 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 737 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:30,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 434 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:59:30,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-10-24 02:59:30,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 672. [2024-10-24 02:59:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 585 states have (on average 1.353846153846154) internal successors, (792), 593 states have internal predecessors, (792), 53 states have call successors, (53), 29 states have call predecessors, (53), 32 states have return successors, (71), 50 states have call predecessors, (71), 52 states have call successors, (71) [2024-10-24 02:59:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 916 transitions. [2024-10-24 02:59:30,879 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 916 transitions. Word has length 60 [2024-10-24 02:59:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:30,880 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 916 transitions. [2024-10-24 02:59:30,880 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 02:59:30,880 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 916 transitions. [2024-10-24 02:59:30,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:59:30,882 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:30,882 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 02:59:30,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 02:59:30,882 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:30,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:30,883 INFO L85 PathProgramCache]: Analyzing trace with hash 727444710, now seen corresponding path program 1 times [2024-10-24 02:59:30,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:30,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648916978] [2024-10-24 02:59:30,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:30,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:30,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 02:59:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,028 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 02:59:31,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:31,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648916978] [2024-10-24 02:59:31,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648916978] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:31,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811752705] [2024-10-24 02:59:31,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:31,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:31,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:31,032 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 02:59:31,034 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 02:59:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:31,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 02:59:31,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:31,392 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 02:59:31,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:59:31,460 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 02:59:31,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811752705] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:59:31,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:59:31,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 8 [2024-10-24 02:59:31,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826429511] [2024-10-24 02:59:31,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:59:31,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:59:31,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:31,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:59:31,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:59:31,463 INFO L87 Difference]: Start difference. First operand 672 states and 916 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 02:59:32,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:32,098 INFO L93 Difference]: Finished difference Result 1475 states and 1951 transitions. [2024-10-24 02:59:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 02:59:32,098 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 02:59:32,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:32,105 INFO L225 Difference]: With dead ends: 1475 [2024-10-24 02:59:32,106 INFO L226 Difference]: Without dead ends: 1472 [2024-10-24 02:59:32,107 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 02:59:32,107 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 655 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:32,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1058 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 02:59:32,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2024-10-24 02:59:32,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 975. [2024-10-24 02:59:32,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 852 states have (on average 1.335680751173709) internal successors, (1138), 866 states have internal predecessors, (1138), 72 states have call successors, (72), 42 states have call predecessors, (72), 49 states have return successors, (101), 67 states have call predecessors, (101), 71 states have call successors, (101) [2024-10-24 02:59:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1311 transitions. [2024-10-24 02:59:32,211 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1311 transitions. Word has length 61 [2024-10-24 02:59:32,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:32,212 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1311 transitions. [2024-10-24 02:59:32,212 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 02:59:32,212 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1311 transitions. [2024-10-24 02:59:32,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 02:59:32,216 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:32,217 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 02:59:32,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 02:59:32,417 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 02:59:32,418 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:32,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:32,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1746083503, now seen corresponding path program 2 times [2024-10-24 02:59:32,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:32,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677688465] [2024-10-24 02:59:32,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:32,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:59:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 02:59:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,477 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 02:59:32,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:32,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677688465] [2024-10-24 02:59:32,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677688465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:32,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:32,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:59:32,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415872170] [2024-10-24 02:59:32,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:32,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:59:32,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:32,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:59:32,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:59:32,479 INFO L87 Difference]: Start difference. First operand 975 states and 1311 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 02:59:32,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:32,798 INFO L93 Difference]: Finished difference Result 1603 states and 2128 transitions. [2024-10-24 02:59:32,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 02:59:32,799 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 02:59:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:32,805 INFO L225 Difference]: With dead ends: 1603 [2024-10-24 02:59:32,805 INFO L226 Difference]: Without dead ends: 944 [2024-10-24 02:59:32,806 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 02:59:32,807 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 442 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:32,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 453 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:59:32,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2024-10-24 02:59:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 867. [2024-10-24 02:59:32,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 757 states have (on average 1.334214002642008) internal successors, (1010), 771 states have internal predecessors, (1010), 65 states have call successors, (65), 37 states have call predecessors, (65), 43 states have return successors, (90), 59 states have call predecessors, (90), 64 states have call successors, (90) [2024-10-24 02:59:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1165 transitions. [2024-10-24 02:59:32,857 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1165 transitions. Word has length 78 [2024-10-24 02:59:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:32,857 INFO L471 AbstractCegarLoop]: Abstraction has 867 states and 1165 transitions. [2024-10-24 02:59:32,857 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 02:59:32,857 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1165 transitions. [2024-10-24 02:59:32,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 02:59:32,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:32,860 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] [2024-10-24 02:59:32,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 02:59:32,860 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:32,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:32,860 INFO L85 PathProgramCache]: Analyzing trace with hash 748720928, now seen corresponding path program 1 times [2024-10-24 02:59:32,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:32,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560517113] [2024-10-24 02:59:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:32,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 02:59:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 02:59:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 02:59:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:32,951 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 02:59:32,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:32,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560517113] [2024-10-24 02:59:32,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560517113] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:32,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:32,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 02:59:32,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17837896] [2024-10-24 02:59:32,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:32,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 02:59:32,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:32,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 02:59:32,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:59:32,953 INFO L87 Difference]: Start difference. First operand 867 states and 1165 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:33,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:33,704 INFO L93 Difference]: Finished difference Result 1071 states and 1492 transitions. [2024-10-24 02:59:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:59:33,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2024-10-24 02:59:33,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:33,708 INFO L225 Difference]: With dead ends: 1071 [2024-10-24 02:59:33,708 INFO L226 Difference]: Without dead ends: 917 [2024-10-24 02:59:33,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-10-24 02:59:33,710 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 457 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:33,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 480 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 02:59:33,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2024-10-24 02:59:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 867. [2024-10-24 02:59:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 757 states have (on average 1.3328929986789961) internal successors, (1009), 771 states have internal predecessors, (1009), 65 states have call successors, (65), 37 states have call predecessors, (65), 43 states have return successors, (90), 59 states have call predecessors, (90), 64 states have call successors, (90) [2024-10-24 02:59:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1164 transitions. [2024-10-24 02:59:33,770 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1164 transitions. Word has length 81 [2024-10-24 02:59:33,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:33,770 INFO L471 AbstractCegarLoop]: Abstraction has 867 states and 1164 transitions. [2024-10-24 02:59:33,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-24 02:59:33,771 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1164 transitions. [2024-10-24 02:59:33,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 02:59:33,772 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:33,772 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] [2024-10-24 02:59:33,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 02:59:33,773 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:33,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:33,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1716071582, now seen corresponding path program 1 times [2024-10-24 02:59:33,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:33,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27641808] [2024-10-24 02:59:33,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:33,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 02:59:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 02:59:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 02:59:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:33,901 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 02:59:33,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:33,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27641808] [2024-10-24 02:59:33,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27641808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:33,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:33,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:59:33,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947350278] [2024-10-24 02:59:33,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:33,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:59:33,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:33,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:59:33,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:59:33,904 INFO L87 Difference]: Start difference. First operand 867 states and 1164 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 02:59:35,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:35,151 INFO L93 Difference]: Finished difference Result 1274 states and 1818 transitions. [2024-10-24 02:59:35,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 02:59:35,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 81 [2024-10-24 02:59:35,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:35,157 INFO L225 Difference]: With dead ends: 1274 [2024-10-24 02:59:35,158 INFO L226 Difference]: Without dead ends: 1122 [2024-10-24 02:59:35,159 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 02:59:35,159 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 735 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:35,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 668 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 02:59:35,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2024-10-24 02:59:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1023. [2024-10-24 02:59:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 893 states have (on average 1.3717805151175813) internal successors, (1225), 908 states have internal predecessors, (1225), 78 states have call successors, (78), 43 states have call predecessors, (78), 50 states have return successors, (106), 72 states have call predecessors, (106), 77 states have call successors, (106) [2024-10-24 02:59:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1409 transitions. [2024-10-24 02:59:35,264 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1409 transitions. Word has length 81 [2024-10-24 02:59:35,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:35,264 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1409 transitions. [2024-10-24 02:59:35,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 02:59:35,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1409 transitions. [2024-10-24 02:59:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 02:59:35,266 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:35,266 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] [2024-10-24 02:59:35,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 02:59:35,267 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:35,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:35,267 INFO L85 PathProgramCache]: Analyzing trace with hash 298272478, now seen corresponding path program 1 times [2024-10-24 02:59:35,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:35,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711609195] [2024-10-24 02:59:35,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:35,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 02:59:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 02:59:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 02:59:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:35,407 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 02:59:35,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:35,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711609195] [2024-10-24 02:59:35,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711609195] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:35,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:35,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:35,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573225265] [2024-10-24 02:59:35,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:35,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:35,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:35,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:35,411 INFO L87 Difference]: Start difference. First operand 1023 states and 1409 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:37,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:37,103 INFO L93 Difference]: Finished difference Result 1639 states and 2392 transitions. [2024-10-24 02:59:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:59:37,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-24 02:59:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:37,110 INFO L225 Difference]: With dead ends: 1639 [2024-10-24 02:59:37,110 INFO L226 Difference]: Without dead ends: 1331 [2024-10-24 02:59:37,112 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 02:59:37,113 INFO L432 NwaCegarLoop]: 271 mSDtfsCounter, 748 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:37,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1136 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-24 02:59:37,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2024-10-24 02:59:37,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1168. [2024-10-24 02:59:37,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1018 states have (on average 1.393909626719057) internal successors, (1419), 1034 states have internal predecessors, (1419), 91 states have call successors, (91), 49 states have call predecessors, (91), 57 states have return successors, (121), 86 states have call predecessors, (121), 90 states have call successors, (121) [2024-10-24 02:59:37,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1631 transitions. [2024-10-24 02:59:37,214 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1631 transitions. Word has length 81 [2024-10-24 02:59:37,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:37,215 INFO L471 AbstractCegarLoop]: Abstraction has 1168 states and 1631 transitions. [2024-10-24 02:59:37,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1631 transitions. [2024-10-24 02:59:37,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 02:59:37,217 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:37,217 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] [2024-10-24 02:59:37,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 02:59:37,218 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:37,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:37,218 INFO L85 PathProgramCache]: Analyzing trace with hash -917881248, now seen corresponding path program 1 times [2024-10-24 02:59:37,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:37,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493010739] [2024-10-24 02:59:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:37,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:37,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:37,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 02:59:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:37,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 02:59:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:37,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 02:59:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:37,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:37,366 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 02:59:37,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:37,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493010739] [2024-10-24 02:59:37,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493010739] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:37,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:37,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:37,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131919913] [2024-10-24 02:59:37,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:37,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:37,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:37,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:37,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:37,369 INFO L87 Difference]: Start difference. First operand 1168 states and 1631 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:38,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:38,301 INFO L93 Difference]: Finished difference Result 1786 states and 2624 transitions. [2024-10-24 02:59:38,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:59:38,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-24 02:59:38,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:38,308 INFO L225 Difference]: With dead ends: 1786 [2024-10-24 02:59:38,309 INFO L226 Difference]: Without dead ends: 1333 [2024-10-24 02:59:38,310 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 02:59:38,311 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 587 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:38,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 680 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 02:59:38,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2024-10-24 02:59:38,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1168. [2024-10-24 02:59:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1018 states have (on average 1.3909626719056976) internal successors, (1416), 1034 states have internal predecessors, (1416), 91 states have call successors, (91), 49 states have call predecessors, (91), 57 states have return successors, (121), 86 states have call predecessors, (121), 90 states have call successors, (121) [2024-10-24 02:59:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1628 transitions. [2024-10-24 02:59:38,433 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1628 transitions. Word has length 81 [2024-10-24 02:59:38,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:38,433 INFO L471 AbstractCegarLoop]: Abstraction has 1168 states and 1628 transitions. [2024-10-24 02:59:38,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1628 transitions. [2024-10-24 02:59:38,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 02:59:38,436 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:38,436 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] [2024-10-24 02:59:38,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 02:59:38,436 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:38,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:38,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1690906210, now seen corresponding path program 1 times [2024-10-24 02:59:38,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:38,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505373179] [2024-10-24 02:59:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:38,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 02:59:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 02:59:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 02:59:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:38,582 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 02:59:38,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:38,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505373179] [2024-10-24 02:59:38,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505373179] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:38,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:38,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:38,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217742428] [2024-10-24 02:59:38,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:38,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:38,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:38,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:38,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:38,584 INFO L87 Difference]: Start difference. First operand 1168 states and 1628 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:39,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:39,511 INFO L93 Difference]: Finished difference Result 1782 states and 2607 transitions. [2024-10-24 02:59:39,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:59:39,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-24 02:59:39,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:39,518 INFO L225 Difference]: With dead ends: 1782 [2024-10-24 02:59:39,518 INFO L226 Difference]: Without dead ends: 1329 [2024-10-24 02:59:39,522 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 02:59:39,523 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 585 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:39,524 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 680 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 02:59:39,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2024-10-24 02:59:39,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1168. [2024-10-24 02:59:39,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1018 states have (on average 1.388015717092338) internal successors, (1413), 1034 states have internal predecessors, (1413), 91 states have call successors, (91), 49 states have call predecessors, (91), 57 states have return successors, (121), 86 states have call predecessors, (121), 90 states have call successors, (121) [2024-10-24 02:59:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1625 transitions. [2024-10-24 02:59:39,625 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1625 transitions. Word has length 81 [2024-10-24 02:59:39,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:39,625 INFO L471 AbstractCegarLoop]: Abstraction has 1168 states and 1625 transitions. [2024-10-24 02:59:39,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:39,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1625 transitions. [2024-10-24 02:59:39,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 02:59:39,630 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:39,630 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] [2024-10-24 02:59:39,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 02:59:39,630 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:39,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:39,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1636513312, now seen corresponding path program 1 times [2024-10-24 02:59:39,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:39,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100660098] [2024-10-24 02:59:39,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:39,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:39,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:39,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 02:59:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:39,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 02:59:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:39,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 02:59:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:39,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:39,776 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 02:59:39,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100660098] [2024-10-24 02:59:39,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100660098] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:39,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:39,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:39,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365485142] [2024-10-24 02:59:39,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:39,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:39,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:39,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:39,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:39,778 INFO L87 Difference]: Start difference. First operand 1168 states and 1625 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:41,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:41,336 INFO L93 Difference]: Finished difference Result 2276 states and 3362 transitions. [2024-10-24 02:59:41,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:59:41,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-24 02:59:41,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:41,345 INFO L225 Difference]: With dead ends: 2276 [2024-10-24 02:59:41,346 INFO L226 Difference]: Without dead ends: 1823 [2024-10-24 02:59:41,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:59:41,348 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 882 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1597 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:41,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1127 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1597 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 02:59:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2024-10-24 02:59:41,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1464. [2024-10-24 02:59:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1276 states have (on average 1.4184952978056427) internal successors, (1810), 1294 states have internal predecessors, (1810), 115 states have call successors, (115), 61 states have call predecessors, (115), 71 states have return successors, (153), 112 states have call predecessors, (153), 114 states have call successors, (153) [2024-10-24 02:59:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2078 transitions. [2024-10-24 02:59:41,500 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2078 transitions. Word has length 81 [2024-10-24 02:59:41,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:41,500 INFO L471 AbstractCegarLoop]: Abstraction has 1464 states and 2078 transitions. [2024-10-24 02:59:41,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:41,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2078 transitions. [2024-10-24 02:59:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 02:59:41,503 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:41,503 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] [2024-10-24 02:59:41,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 02:59:41,503 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:41,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:41,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1219116706, now seen corresponding path program 1 times [2024-10-24 02:59:41,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:41,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482102768] [2024-10-24 02:59:41,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:41,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 02:59:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 02:59:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 02:59:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:41,669 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 02:59:41,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:41,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482102768] [2024-10-24 02:59:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482102768] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:41,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:41,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:41,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821261400] [2024-10-24 02:59:41,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:41,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:41,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:41,673 INFO L87 Difference]: Start difference. First operand 1464 states and 2078 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:43,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:43,324 INFO L93 Difference]: Finished difference Result 3366 states and 5045 transitions. [2024-10-24 02:59:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:59:43,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-24 02:59:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:43,339 INFO L225 Difference]: With dead ends: 3366 [2024-10-24 02:59:43,339 INFO L226 Difference]: Without dead ends: 2617 [2024-10-24 02:59:43,343 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 02:59:43,344 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 845 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:43,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1123 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 02:59:43,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2024-10-24 02:59:43,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2029. [2024-10-24 02:59:43,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 1767 states have (on average 1.4499151103565364) internal successors, (2562), 1789 states have internal predecessors, (2562), 161 states have call successors, (161), 85 states have call predecessors, (161), 99 states have return successors, (221), 162 states have call predecessors, (221), 160 states have call successors, (221) [2024-10-24 02:59:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2944 transitions. [2024-10-24 02:59:43,555 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2944 transitions. Word has length 81 [2024-10-24 02:59:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:43,555 INFO L471 AbstractCegarLoop]: Abstraction has 2029 states and 2944 transitions. [2024-10-24 02:59:43,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2944 transitions. [2024-10-24 02:59:43,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 02:59:43,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:43,558 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] [2024-10-24 02:59:43,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 02:59:43,559 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:43,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:43,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1898388960, now seen corresponding path program 1 times [2024-10-24 02:59:43,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:43,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043106072] [2024-10-24 02:59:43,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:43,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 02:59:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 02:59:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 02:59:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:43,694 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 02:59:43,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:43,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043106072] [2024-10-24 02:59:43,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043106072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:43,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:43,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:43,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433126007] [2024-10-24 02:59:43,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:43,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:43,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:43,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:43,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:43,696 INFO L87 Difference]: Start difference. First operand 2029 states and 2944 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:44,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:44,528 INFO L93 Difference]: Finished difference Result 3716 states and 5592 transitions. [2024-10-24 02:59:44,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 02:59:44,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-24 02:59:44,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:44,541 INFO L225 Difference]: With dead ends: 3716 [2024-10-24 02:59:44,541 INFO L226 Difference]: Without dead ends: 2402 [2024-10-24 02:59:44,546 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 02:59:44,546 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 593 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:44,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 678 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 02:59:44,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2024-10-24 02:59:44,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2029. [2024-10-24 02:59:44,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 1767 states have (on average 1.4448217317487266) internal successors, (2553), 1789 states have internal predecessors, (2553), 161 states have call successors, (161), 85 states have call predecessors, (161), 99 states have return successors, (221), 162 states have call predecessors, (221), 160 states have call successors, (221) [2024-10-24 02:59:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2935 transitions. [2024-10-24 02:59:44,760 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2935 transitions. Word has length 81 [2024-10-24 02:59:44,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:44,761 INFO L471 AbstractCegarLoop]: Abstraction has 2029 states and 2935 transitions. [2024-10-24 02:59:44,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:44,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2935 transitions. [2024-10-24 02:59:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 02:59:44,764 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:44,764 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] [2024-10-24 02:59:44,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 02:59:44,765 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:44,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:44,765 INFO L85 PathProgramCache]: Analyzing trace with hash -435003678, now seen corresponding path program 1 times [2024-10-24 02:59:44,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:44,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538910343] [2024-10-24 02:59:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:44,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:44,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:44,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 02:59:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:44,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 02:59:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:44,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 02:59:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:44,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:44,915 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 02:59:44,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:44,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538910343] [2024-10-24 02:59:44,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538910343] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:44,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:44,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:44,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429257104] [2024-10-24 02:59:44,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:44,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:44,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:44,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:44,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:44,918 INFO L87 Difference]: Start difference. First operand 2029 states and 2935 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:46,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:46,528 INFO L93 Difference]: Finished difference Result 5319 states and 8017 transitions. [2024-10-24 02:59:46,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:59:46,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-24 02:59:46,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:46,545 INFO L225 Difference]: With dead ends: 5319 [2024-10-24 02:59:46,545 INFO L226 Difference]: Without dead ends: 4005 [2024-10-24 02:59:46,549 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 02:59:46,550 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 768 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:46,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1127 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 02:59:46,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2024-10-24 02:59:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 3187. [2024-10-24 02:59:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 2781 states have (on average 1.4732110751528227) internal successors, (4097), 2811 states have internal predecessors, (4097), 249 states have call successors, (249), 133 states have call predecessors, (249), 155 states have return successors, (371), 258 states have call predecessors, (371), 248 states have call successors, (371) [2024-10-24 02:59:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 4717 transitions. [2024-10-24 02:59:46,884 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 4717 transitions. Word has length 81 [2024-10-24 02:59:46,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:46,884 INFO L471 AbstractCegarLoop]: Abstraction has 3187 states and 4717 transitions. [2024-10-24 02:59:46,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:46,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 4717 transitions. [2024-10-24 02:59:46,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 02:59:46,889 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:46,889 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] [2024-10-24 02:59:46,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 02:59:46,890 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:46,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:46,891 INFO L85 PathProgramCache]: Analyzing trace with hash -233179744, now seen corresponding path program 1 times [2024-10-24 02:59:46,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:46,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029369912] [2024-10-24 02:59:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:46,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:46,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:46,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 02:59:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:47,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 02:59:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:47,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 02:59:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:47,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:47,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:59:47,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:47,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029369912] [2024-10-24 02:59:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029369912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:47,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:47,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:59:47,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222402112] [2024-10-24 02:59:47,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:47,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:59:47,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:47,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:59:47,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:47,022 INFO L87 Difference]: Start difference. First operand 3187 states and 4717 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:48,866 INFO L93 Difference]: Finished difference Result 9275 states and 14141 transitions. [2024-10-24 02:59:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:59:48,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 81 [2024-10-24 02:59:48,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:48,965 INFO L225 Difference]: With dead ends: 9275 [2024-10-24 02:59:48,966 INFO L226 Difference]: Without dead ends: 6803 [2024-10-24 02:59:48,976 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 02:59:48,976 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 717 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:48,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1127 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-24 02:59:48,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6803 states. [2024-10-24 02:59:49,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6803 to 5500. [2024-10-24 02:59:49,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5500 states, 4814 states have (on average 1.4945990859991691) internal successors, (7195), 4860 states have internal predecessors, (7195), 417 states have call successors, (417), 229 states have call predecessors, (417), 267 states have return successors, (717), 442 states have call predecessors, (717), 416 states have call successors, (717) [2024-10-24 02:59:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5500 states to 5500 states and 8329 transitions. [2024-10-24 02:59:49,663 INFO L78 Accepts]: Start accepts. Automaton has 5500 states and 8329 transitions. Word has length 81 [2024-10-24 02:59:49,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:49,664 INFO L471 AbstractCegarLoop]: Abstraction has 5500 states and 8329 transitions. [2024-10-24 02:59:49,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 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 02:59:49,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5500 states and 8329 transitions. [2024-10-24 02:59:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 02:59:49,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:49,674 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] [2024-10-24 02:59:49,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 02:59:49,675 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:49,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:49,675 INFO L85 PathProgramCache]: Analyzing trace with hash 327520034, now seen corresponding path program 1 times [2024-10-24 02:59:49,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:49,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377234533] [2024-10-24 02:59:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:49,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:49,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:49,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 02:59:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:49,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 02:59:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:49,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 02:59:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:49,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:49,789 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 02:59:49,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:49,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377234533] [2024-10-24 02:59:49,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377234533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:49,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:59:49,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:59:49,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677825549] [2024-10-24 02:59:49,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:49,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:59:49,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:49,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:59:49,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:59:49,791 INFO L87 Difference]: Start difference. First operand 5500 states and 8329 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 02:59:51,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:51,737 INFO L93 Difference]: Finished difference Result 14351 states and 22092 transitions. [2024-10-24 02:59:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 02:59:51,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 81 [2024-10-24 02:59:51,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:51,772 INFO L225 Difference]: With dead ends: 14351 [2024-10-24 02:59:51,773 INFO L226 Difference]: Without dead ends: 9567 [2024-10-24 02:59:51,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-24 02:59:51,793 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 908 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:51,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 875 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 02:59:51,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9567 states. [2024-10-24 02:59:52,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9567 to 7924. [2024-10-24 02:59:52,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7924 states, 6922 states have (on average 1.4943657902340364) internal successors, (10344), 7001 states have internal predecessors, (10344), 615 states have call successors, (615), 331 states have call predecessors, (615), 385 states have return successors, (997), 623 states have call predecessors, (997), 614 states have call successors, (997) [2024-10-24 02:59:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 11956 transitions. [2024-10-24 02:59:52,550 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 11956 transitions. Word has length 81 [2024-10-24 02:59:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:52,550 INFO L471 AbstractCegarLoop]: Abstraction has 7924 states and 11956 transitions. [2024-10-24 02:59:52,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 4 states have internal predecessors, (71), 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 02:59:52,551 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 11956 transitions. [2024-10-24 02:59:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 02:59:52,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:52,560 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 02:59:52,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 02:59:52,561 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:52,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash -557587446, now seen corresponding path program 1 times [2024-10-24 02:59:52,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:52,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862734470] [2024-10-24 02:59:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:52,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 02:59:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-24 02:59:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 02:59:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-24 02:59:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 02:59:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,645 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 02:59:52,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:52,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862734470] [2024-10-24 02:59:52,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862734470] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:52,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406009697] [2024-10-24 02:59:52,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:52,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:52,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:52,650 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 02:59:52,651 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 02:59:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:52,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:52,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:52,769 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 02:59:52,770 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:52,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406009697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:52,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:52,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-24 02:59:52,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138527269] [2024-10-24 02:59:52,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:52,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:52,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:52,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:52,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:59:52,773 INFO L87 Difference]: Start difference. First operand 7924 states and 11956 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 02:59:53,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:53,361 INFO L93 Difference]: Finished difference Result 8207 states and 12312 transitions. [2024-10-24 02:59:53,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:53,362 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 02:59:53,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:53,387 INFO L225 Difference]: With dead ends: 8207 [2024-10-24 02:59:53,387 INFO L226 Difference]: Without dead ends: 7220 [2024-10-24 02:59:53,393 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 02:59:53,394 INFO L432 NwaCegarLoop]: 340 mSDtfsCounter, 55 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:53,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 624 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:59:53,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7220 states. [2024-10-24 02:59:54,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7220 to 7220. [2024-10-24 02:59:54,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7220 states, 6303 states have (on average 1.5153101697604316) internal successors, (9551), 6369 states have internal predecessors, (9551), 568 states have call successors, (568), 300 states have call predecessors, (568), 348 states have return successors, (925), 582 states have call predecessors, (925), 568 states have call successors, (925) [2024-10-24 02:59:54,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7220 states to 7220 states and 11044 transitions. [2024-10-24 02:59:54,370 INFO L78 Accepts]: Start accepts. Automaton has 7220 states and 11044 transitions. Word has length 92 [2024-10-24 02:59:54,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:54,370 INFO L471 AbstractCegarLoop]: Abstraction has 7220 states and 11044 transitions. [2024-10-24 02:59:54,371 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 02:59:54,371 INFO L276 IsEmpty]: Start isEmpty. Operand 7220 states and 11044 transitions. [2024-10-24 02:59:54,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-24 02:59:54,391 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:54,391 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:54,410 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 02:59:54,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:54,596 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:54,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:54,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1190109263, now seen corresponding path program 1 times [2024-10-24 02:59:54,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:54,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721308652] [2024-10-24 02:59:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:54,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:54,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:54,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 02:59:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:54,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 02:59:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:54,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 02:59:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:54,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:54,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 02:59:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:54,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:54,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-24 02:59:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 02:59:54,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:54,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721308652] [2024-10-24 02:59:54,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721308652] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:54,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733104131] [2024-10-24 02:59:54,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:54,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:54,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:54,737 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 02:59:54,738 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 02:59:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:54,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:54,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-24 02:59:54,924 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:54,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733104131] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:54,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:54,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 02:59:54,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610046246] [2024-10-24 02:59:54,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:54,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:54,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:54,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:54,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:54,926 INFO L87 Difference]: Start difference. First operand 7220 states and 11044 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 02:59:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:59:56,074 INFO L93 Difference]: Finished difference Result 21429 states and 32968 transitions. [2024-10-24 02:59:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:59:56,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 131 [2024-10-24 02:59:56,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:59:56,125 INFO L225 Difference]: With dead ends: 21429 [2024-10-24 02:59:56,126 INFO L226 Difference]: Without dead ends: 14221 [2024-10-24 02:59:56,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 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 02:59:56,151 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 208 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:59:56,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 430 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:59:56,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14221 states. [2024-10-24 02:59:57,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14221 to 14169. [2024-10-24 02:59:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14169 states, 12394 states have (on average 1.51169920929482) internal successors, (18736), 12525 states have internal predecessors, (18736), 1080 states have call successors, (1080), 598 states have call predecessors, (1080), 694 states have return successors, (1763), 1077 states have call predecessors, (1763), 1080 states have call successors, (1763) [2024-10-24 02:59:57,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14169 states to 14169 states and 21579 transitions. [2024-10-24 02:59:57,276 INFO L78 Accepts]: Start accepts. Automaton has 14169 states and 21579 transitions. Word has length 131 [2024-10-24 02:59:57,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:59:57,277 INFO L471 AbstractCegarLoop]: Abstraction has 14169 states and 21579 transitions. [2024-10-24 02:59:57,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 02:59:57,277 INFO L276 IsEmpty]: Start isEmpty. Operand 14169 states and 21579 transitions. [2024-10-24 02:59:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-24 02:59:57,305 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:59:57,305 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:59:57,324 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 02:59:57,506 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,SelfDestructingSolverStorable22 [2024-10-24 02:59:57,507 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:59:57,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:59:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2099407215, now seen corresponding path program 1 times [2024-10-24 02:59:57,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:59:57,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491229264] [2024-10-24 02:59:57,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:57,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:59:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:57,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:59:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:57,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 02:59:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:57,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 02:59:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:57,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 02:59:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:57,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 02:59:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:57,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 02:59:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:57,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:59:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:57,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-24 02:59:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 02:59:57,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:59:57,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491229264] [2024-10-24 02:59:57,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491229264] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:59:57,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468012937] [2024-10-24 02:59:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:59:57,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:59:57,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:59:57,629 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 02:59:57,631 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 02:59:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:59:57,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:59:57,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:59:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-10-24 02:59:57,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:59:57,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468012937] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:59:57,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:59:57,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 02:59:57,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672551590] [2024-10-24 02:59:57,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:59:57,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:59:57,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:59:57,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:59:57,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:59:57,793 INFO L87 Difference]: Start difference. First operand 14169 states and 21579 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 03:00:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:00,311 INFO L93 Difference]: Finished difference Result 42172 states and 64627 transitions. [2024-10-24 03:00:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:00:00,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 131 [2024-10-24 03:00:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:00,413 INFO L225 Difference]: With dead ends: 42172 [2024-10-24 03:00:00,413 INFO L226 Difference]: Without dead ends: 28015 [2024-10-24 03:00:00,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 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 03:00:00,458 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 198 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:00,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 430 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:00:00,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28015 states. [2024-10-24 03:00:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28015 to 27913. [2024-10-24 03:00:03,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27913 states, 24424 states have (on average 1.506878480183426) internal successors, (36804), 24685 states have internal predecessors, (36804), 2102 states have call successors, (2102), 1194 states have call predecessors, (2102), 1386 states have return successors, (3437), 2065 states have call predecessors, (3437), 2102 states have call successors, (3437) [2024-10-24 03:00:03,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27913 states to 27913 states and 42343 transitions. [2024-10-24 03:00:03,128 INFO L78 Accepts]: Start accepts. Automaton has 27913 states and 42343 transitions. Word has length 131 [2024-10-24 03:00:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:03,129 INFO L471 AbstractCegarLoop]: Abstraction has 27913 states and 42343 transitions. [2024-10-24 03:00:03,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 03:00:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand 27913 states and 42343 transitions. [2024-10-24 03:00:03,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-24 03:00:03,189 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:03,190 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 03:00:03,208 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 03:00:03,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:03,392 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:03,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:03,392 INFO L85 PathProgramCache]: Analyzing trace with hash -915924337, now seen corresponding path program 1 times [2024-10-24 03:00:03,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:03,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394980270] [2024-10-24 03:00:03,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:03,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:00:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 03:00:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 03:00:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 03:00:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 03:00:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 03:00:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-24 03:00:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 03:00:03,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:03,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394980270] [2024-10-24 03:00:03,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394980270] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:00:03,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129096105] [2024-10-24 03:00:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:03,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:03,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:00:03,534 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 03:00:03,535 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 03:00:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:03,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:00:03,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:00:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-24 03:00:03,689 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:00:03,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129096105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:03,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:00:03,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 03:00:03,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693168617] [2024-10-24 03:00:03,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:03,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:00:03,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:03,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:00:03,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:00:03,692 INFO L87 Difference]: Start difference. First operand 27913 states and 42343 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 03:00:07,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:07,785 INFO L93 Difference]: Finished difference Result 82671 states and 126800 transitions. [2024-10-24 03:00:07,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:00:07,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 131 [2024-10-24 03:00:07,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:08,073 INFO L225 Difference]: With dead ends: 82671 [2024-10-24 03:00:08,073 INFO L226 Difference]: Without dead ends: 54771 [2024-10-24 03:00:08,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 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 03:00:08,145 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 217 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:08,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 661 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 03:00:08,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54771 states. [2024-10-24 03:00:13,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54771 to 54771. [2024-10-24 03:00:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54771 states, 47955 states have (on average 1.5009488061724534) internal successors, (71978), 48409 states have internal predecessors, (71978), 4055 states have call successors, (4055), 2376 states have call predecessors, (4055), 2760 states have return successors, (7476), 4049 states have call predecessors, (7476), 4055 states have call successors, (7476) [2024-10-24 03:00:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54771 states to 54771 states and 83509 transitions. [2024-10-24 03:00:13,372 INFO L78 Accepts]: Start accepts. Automaton has 54771 states and 83509 transitions. Word has length 131 [2024-10-24 03:00:13,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 03:00:13,373 INFO L471 AbstractCegarLoop]: Abstraction has 54771 states and 83509 transitions. [2024-10-24 03:00:13,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 03:00:13,373 INFO L276 IsEmpty]: Start isEmpty. Operand 54771 states and 83509 transitions. [2024-10-24 03:00:13,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-24 03:00:13,497 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 03:00:13,497 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:13,516 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 03:00:13,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:13,699 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 03:00:13,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 03:00:13,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1425628536, now seen corresponding path program 1 times [2024-10-24 03:00:13,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 03:00:13,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488057550] [2024-10-24 03:00:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:13,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 03:00:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:13,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 03:00:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:13,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 03:00:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:13,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-24 03:00:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:13,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 03:00:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:13,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 03:00:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:13,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 03:00:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:13,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:13,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-24 03:00:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:13,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 03:00:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:13,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-24 03:00:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-24 03:00:13,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 03:00:13,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488057550] [2024-10-24 03:00:13,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488057550] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 03:00:13,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355164605] [2024-10-24 03:00:13,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 03:00:13,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 03:00:13,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 03:00:13,845 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 03:00:13,846 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 03:00:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 03:00:13,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 03:00:13,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 03:00:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-10-24 03:00:14,113 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 03:00:14,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355164605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 03:00:14,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 03:00:14,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 03:00:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033911998] [2024-10-24 03:00:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 03:00:14,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 03:00:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 03:00:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 03:00:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 03:00:14,116 INFO L87 Difference]: Start difference. First operand 54771 states and 83509 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 03:00:22,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 03:00:22,636 INFO L93 Difference]: Finished difference Result 162985 states and 250426 transitions. [2024-10-24 03:00:22,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 03:00:22,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 169 [2024-10-24 03:00:22,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 03:00:23,533 INFO L225 Difference]: With dead ends: 162985 [2024-10-24 03:00:23,533 INFO L226 Difference]: Without dead ends: 108233 [2024-10-24 03:00:23,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 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 03:00:23,674 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 147 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 03:00:23,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 430 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 03:00:23,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108233 states.