./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd --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 0ae5a79d1f1baf1f14454f65e56a4602af56e479a8b0432aa823cab3749bdff6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:48:15,104 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:48:15,208 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 12:48:15,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:48:15,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:48:15,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:48:15,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:48:15,245 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:48:15,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 12:48:15,245 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 12:48:15,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:48:15,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:48:15,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:48:15,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:48:15,247 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:48:15,247 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:48:15,247 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 12:48:15,247 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 12:48:15,247 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:48:15,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 12:48:15,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:48:15,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 12:48:15,248 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:48:15,248 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 12:48:15,248 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:48:15,248 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 12:48:15,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 12:48:15,249 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:48:15,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:48:15,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:48:15,249 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 12:48:15,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:48:15,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:48:15,250 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:48:15,250 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:48:15,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 12:48:15,251 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:48:15,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:48:15,251 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:48:15,251 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 12:48:15,251 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 12:48:15,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 12:48:15,252 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd 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 -> 0ae5a79d1f1baf1f14454f65e56a4602af56e479a8b0432aa823cab3749bdff6 [2024-11-13 12:48:15,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:48:15,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:48:15,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:48:15,657 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:48:15,657 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:48:15,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c Unable to find full path for "g++" [2024-11-13 12:48:17,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:48:18,488 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:48:18,489 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c [2024-11-13 12:48:18,522 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/data/20e3cf4c5/82b402363e844a5cb0c0ed0cc7fa4a10/FLAG53a8f12a5 [2024-11-13 12:48:18,542 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/data/20e3cf4c5/82b402363e844a5cb0c0ed0cc7fa4a10 [2024-11-13 12:48:18,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:48:18,547 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:48:18,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:48:18,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:48:18,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:48:18,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:48:18" (1/1) ... [2024-11-13 12:48:18,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a85d19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:18, skipping insertion in model container [2024-11-13 12:48:18,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:48:18" (1/1) ... [2024-11-13 12:48:18,744 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:48:19,137 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c[6354,6367] [2024-11-13 12:48:19,214 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c[13290,13303] [2024-11-13 12:48:20,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:48:20,164 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:48:20,209 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c[6354,6367] [2024-11-13 12:48:20,232 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c[13290,13303] [2024-11-13 12:48:20,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:48:20,856 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:48:20,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20 WrapperNode [2024-11-13 12:48:20,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:48:20,858 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:48:20,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:48:20,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:48:20,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20" (1/1) ... [2024-11-13 12:48:20,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20" (1/1) ... [2024-11-13 12:48:21,364 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2024-11-13 12:48:21,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:48:21,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:48:21,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:48:21,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:48:21,375 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20" (1/1) ... [2024-11-13 12:48:21,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20" (1/1) ... [2024-11-13 12:48:21,426 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20" (1/1) ... [2024-11-13 12:48:21,637 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 12:48:21,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20" (1/1) ... [2024-11-13 12:48:21,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20" (1/1) ... [2024-11-13 12:48:21,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20" (1/1) ... [2024-11-13 12:48:21,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20" (1/1) ... [2024-11-13 12:48:21,989 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20" (1/1) ... [2024-11-13 12:48:22,007 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20" (1/1) ... [2024-11-13 12:48:22,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:48:22,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:48:22,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:48:22,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:48:22,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20" (1/1) ... [2024-11-13 12:48:22,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:48:22,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:48:22,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:48:22,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:48:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:48:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 12:48:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:48:22,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:48:22,313 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:48:22,316 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:48:28,898 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-11-13 12:48:28,898 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:48:28,936 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:48:28,940 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 12:48:28,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:48:28 BoogieIcfgContainer [2024-11-13 12:48:28,941 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:48:28,944 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:48:28,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:48:28,955 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:48:28,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:48:18" (1/3) ... [2024-11-13 12:48:28,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaba0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:48:28, skipping insertion in model container [2024-11-13 12:48:28,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:20" (2/3) ... [2024-11-13 12:48:28,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aaba0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:48:28, skipping insertion in model container [2024-11-13 12:48:28,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:48:28" (3/3) ... [2024-11-13 12:48:28,958 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c [2024-11-13 12:48:28,974 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:48:28,977 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c that has 1 procedures, 872 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-13 12:48:29,086 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:48:29,102 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;@1b9b60e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:48:29,103 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 12:48:29,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:29,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 12:48:29,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:29,123 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] [2024-11-13 12:48:29,124 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:29,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:29,130 INFO L85 PathProgramCache]: Analyzing trace with hash -525248019, now seen corresponding path program 1 times [2024-11-13 12:48:29,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:29,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084792102] [2024-11-13 12:48:29,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:29,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:29,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:29,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084792102] [2024-11-13 12:48:29,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084792102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:29,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:29,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:48:29,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508546764] [2024-11-13 12:48:29,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:29,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 12:48:29,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:29,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 12:48:29,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 12:48:29,432 INFO L87 Difference]: Start difference. First operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:29,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:29,565 INFO L93 Difference]: Finished difference Result 1722 states and 3274 transitions. [2024-11-13 12:48:29,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 12:48:29,569 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 12:48:29,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:29,600 INFO L225 Difference]: With dead ends: 1722 [2024-11-13 12:48:29,600 INFO L226 Difference]: Without dead ends: 806 [2024-11-13 12:48:29,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 12:48:29,612 INFO L432 NwaCegarLoop]: 1591 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:29,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:29,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-11-13 12:48:29,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2024-11-13 12:48:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8955223880597014) internal successors, (1524), 805 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1524 transitions. [2024-11-13 12:48:29,729 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1524 transitions. Word has length 20 [2024-11-13 12:48:29,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:29,729 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1524 transitions. [2024-11-13 12:48:29,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:29,730 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1524 transitions. [2024-11-13 12:48:29,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 12:48:29,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:29,731 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] [2024-11-13 12:48:29,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 12:48:29,732 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:29,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:29,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1536365269, now seen corresponding path program 1 times [2024-11-13 12:48:29,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:29,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930342612] [2024-11-13 12:48:29,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:29,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:30,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:30,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930342612] [2024-11-13 12:48:30,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930342612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:30,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:30,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:48:30,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715126475] [2024-11-13 12:48:30,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:30,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:48:30,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:30,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:48:30,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:30,074 INFO L87 Difference]: Start difference. First operand 806 states and 1524 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:30,249 INFO L93 Difference]: Finished difference Result 870 states and 1622 transitions. [2024-11-13 12:48:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:48:30,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 12:48:30,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:30,257 INFO L225 Difference]: With dead ends: 870 [2024-11-13 12:48:30,259 INFO L226 Difference]: Without dead ends: 836 [2024-11-13 12:48:30,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:30,261 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 46 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 6058 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:30,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 6058 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2024-11-13 12:48:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 806. [2024-11-13 12:48:30,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8756218905472637) internal successors, (1508), 805 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:30,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1508 transitions. [2024-11-13 12:48:30,314 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1508 transitions. Word has length 20 [2024-11-13 12:48:30,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:30,314 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1508 transitions. [2024-11-13 12:48:30,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:30,315 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1508 transitions. [2024-11-13 12:48:30,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 12:48:30,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:30,318 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] [2024-11-13 12:48:30,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 12:48:30,318 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:30,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:30,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1635755491, now seen corresponding path program 1 times [2024-11-13 12:48:30,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:30,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346215819] [2024-11-13 12:48:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:30,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:30,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:30,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346215819] [2024-11-13 12:48:30,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346215819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:30,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:30,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:48:30,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111453799] [2024-11-13 12:48:30,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:30,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:48:30,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:30,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:48:30,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:30,593 INFO L87 Difference]: Start difference. First operand 806 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:30,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:30,773 INFO L93 Difference]: Finished difference Result 986 states and 1790 transitions. [2024-11-13 12:48:30,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 12:48:30,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-13 12:48:30,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:30,779 INFO L225 Difference]: With dead ends: 986 [2024-11-13 12:48:30,781 INFO L226 Difference]: Without dead ends: 956 [2024-11-13 12:48:30,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:48:30,787 INFO L432 NwaCegarLoop]: 1504 mSDtfsCounter, 4589 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:30,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 1865 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:30,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2024-11-13 12:48:30,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 834. [2024-11-13 12:48:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8653846153846154) internal successors, (1552), 833 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1552 transitions. [2024-11-13 12:48:30,838 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1552 transitions. Word has length 35 [2024-11-13 12:48:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:30,839 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1552 transitions. [2024-11-13 12:48:30,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1552 transitions. [2024-11-13 12:48:30,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 12:48:30,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:30,841 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] [2024-11-13 12:48:30,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 12:48:30,842 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:30,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:30,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1412704845, now seen corresponding path program 1 times [2024-11-13 12:48:30,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:30,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171318906] [2024-11-13 12:48:30,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:30,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:30,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:30,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171318906] [2024-11-13 12:48:30,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171318906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:30,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:30,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:30,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902592212] [2024-11-13 12:48:30,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:30,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:30,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:30,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:30,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:30,981 INFO L87 Difference]: Start difference. First operand 834 states and 1552 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:31,030 INFO L93 Difference]: Finished difference Result 939 states and 1715 transitions. [2024-11-13 12:48:31,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:31,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-13 12:48:31,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:31,035 INFO L225 Difference]: With dead ends: 939 [2024-11-13 12:48:31,035 INFO L226 Difference]: Without dead ends: 881 [2024-11-13 12:48:31,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:31,038 INFO L432 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:31,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1548 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:31,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-11-13 12:48:31,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-11-13 12:48:31,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2024-11-13 12:48:31,078 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 37 [2024-11-13 12:48:31,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:31,079 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2024-11-13 12:48:31,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,079 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2024-11-13 12:48:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 12:48:31,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:31,083 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] [2024-11-13 12:48:31,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 12:48:31,083 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:31,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:31,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1346211333, now seen corresponding path program 1 times [2024-11-13 12:48:31,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:31,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083031114] [2024-11-13 12:48:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:31,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:31,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:31,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083031114] [2024-11-13 12:48:31,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083031114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:31,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:31,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:48:31,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267123179] [2024-11-13 12:48:31,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:31,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:48:31,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:31,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:48:31,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:31,451 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:31,570 INFO L93 Difference]: Finished difference Result 984 states and 1780 transitions. [2024-11-13 12:48:31,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:48:31,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-13 12:48:31,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:31,575 INFO L225 Difference]: With dead ends: 984 [2024-11-13 12:48:31,575 INFO L226 Difference]: Without dead ends: 881 [2024-11-13 12:48:31,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:48:31,578 INFO L432 NwaCegarLoop]: 1503 mSDtfsCounter, 2946 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:31,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2946 Valid, 1589 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:31,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-11-13 12:48:31,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-11-13 12:48:31,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8449258836944127) internal successors, (1618), 878 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1618 transitions. [2024-11-13 12:48:31,610 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1618 transitions. Word has length 37 [2024-11-13 12:48:31,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:31,612 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1618 transitions. [2024-11-13 12:48:31,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1618 transitions. [2024-11-13 12:48:31,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 12:48:31,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:31,616 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] [2024-11-13 12:48:31,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 12:48:31,616 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:31,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:31,617 INFO L85 PathProgramCache]: Analyzing trace with hash 802398415, now seen corresponding path program 1 times [2024-11-13 12:48:31,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:31,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099828073] [2024-11-13 12:48:31,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:31,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:31,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:31,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099828073] [2024-11-13 12:48:31,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099828073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:31,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:31,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:48:31,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668651691] [2024-11-13 12:48:31,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:31,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:48:31,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:31,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:48:31,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:31,899 INFO L87 Difference]: Start difference. First operand 879 states and 1618 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:31,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:31,962 INFO L93 Difference]: Finished difference Result 887 states and 1627 transitions. [2024-11-13 12:48:31,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:48:31,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-13 12:48:31,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:31,970 INFO L225 Difference]: With dead ends: 887 [2024-11-13 12:48:31,971 INFO L226 Difference]: Without dead ends: 885 [2024-11-13 12:48:31,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:31,973 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 0 mSDsluCounter, 4506 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6011 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:31,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6011 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:31,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-11-13 12:48:31,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2024-11-13 12:48:32,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.838052095130238) internal successors, (1623), 884 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1623 transitions. [2024-11-13 12:48:32,010 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1623 transitions. Word has length 38 [2024-11-13 12:48:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:32,011 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1623 transitions. [2024-11-13 12:48:32,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1623 transitions. [2024-11-13 12:48:32,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 12:48:32,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:32,013 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] [2024-11-13 12:48:32,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 12:48:32,013 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:32,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:32,015 INFO L85 PathProgramCache]: Analyzing trace with hash 980111963, now seen corresponding path program 1 times [2024-11-13 12:48:32,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:32,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082396303] [2024-11-13 12:48:32,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:32,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:32,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:32,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082396303] [2024-11-13 12:48:32,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082396303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:32,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:32,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:32,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671716753] [2024-11-13 12:48:32,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:32,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:32,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:32,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:32,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:32,095 INFO L87 Difference]: Start difference. First operand 885 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:32,142 INFO L93 Difference]: Finished difference Result 1007 states and 1804 transitions. [2024-11-13 12:48:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:32,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-13 12:48:32,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:32,148 INFO L225 Difference]: With dead ends: 1007 [2024-11-13 12:48:32,148 INFO L226 Difference]: Without dead ends: 943 [2024-11-13 12:48:32,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:32,151 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 1476 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:32,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:32,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-11-13 12:48:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 941. [2024-11-13 12:48:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 939 states have (on average 1.8146964856230032) internal successors, (1704), 940 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1704 transitions. [2024-11-13 12:48:32,190 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1704 transitions. Word has length 39 [2024-11-13 12:48:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:32,190 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1704 transitions. [2024-11-13 12:48:32,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,190 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1704 transitions. [2024-11-13 12:48:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 12:48:32,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:32,193 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] [2024-11-13 12:48:32,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 12:48:32,193 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:32,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:32,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1235356837, now seen corresponding path program 1 times [2024-11-13 12:48:32,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:32,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255405363] [2024-11-13 12:48:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:32,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:32,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:32,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:32,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255405363] [2024-11-13 12:48:32,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255405363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:32,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:32,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:32,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050857224] [2024-11-13 12:48:32,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:32,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:32,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:32,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:32,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:32,271 INFO L87 Difference]: Start difference. First operand 941 states and 1704 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:32,313 INFO L93 Difference]: Finished difference Result 1243 states and 2144 transitions. [2024-11-13 12:48:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:32,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-13 12:48:32,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:32,320 INFO L225 Difference]: With dead ends: 1243 [2024-11-13 12:48:32,321 INFO L226 Difference]: Without dead ends: 1080 [2024-11-13 12:48:32,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:32,322 INFO L432 NwaCegarLoop]: 1542 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:32,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2024-11-13 12:48:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1078. [2024-11-13 12:48:32,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1076 states have (on average 1.762081784386617) internal successors, (1896), 1077 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1896 transitions. [2024-11-13 12:48:32,359 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1896 transitions. Word has length 39 [2024-11-13 12:48:32,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:32,359 INFO L471 AbstractCegarLoop]: Abstraction has 1078 states and 1896 transitions. [2024-11-13 12:48:32,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1896 transitions. [2024-11-13 12:48:32,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 12:48:32,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:32,361 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] [2024-11-13 12:48:32,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 12:48:32,361 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:32,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:32,361 INFO L85 PathProgramCache]: Analyzing trace with hash 545576027, now seen corresponding path program 1 times [2024-11-13 12:48:32,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:32,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581757384] [2024-11-13 12:48:32,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:32,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:32,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:32,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581757384] [2024-11-13 12:48:32,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581757384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:32,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:32,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:32,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551900336] [2024-11-13 12:48:32,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:32,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:32,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:32,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:32,445 INFO L87 Difference]: Start difference. First operand 1078 states and 1896 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:32,493 INFO L93 Difference]: Finished difference Result 1630 states and 2678 transitions. [2024-11-13 12:48:32,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:32,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-13 12:48:32,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:32,499 INFO L225 Difference]: With dead ends: 1630 [2024-11-13 12:48:32,499 INFO L226 Difference]: Without dead ends: 1330 [2024-11-13 12:48:32,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:32,503 INFO L432 NwaCegarLoop]: 1540 mSDtfsCounter, 1472 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:32,503 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1596 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:32,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2024-11-13 12:48:32,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1328. [2024-11-13 12:48:32,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1326 states have (on average 1.6832579185520362) internal successors, (2232), 1327 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2232 transitions. [2024-11-13 12:48:32,555 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2232 transitions. Word has length 39 [2024-11-13 12:48:32,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:32,555 INFO L471 AbstractCegarLoop]: Abstraction has 1328 states and 2232 transitions. [2024-11-13 12:48:32,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:32,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2232 transitions. [2024-11-13 12:48:32,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 12:48:32,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:32,556 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 12:48:32,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 12:48:32,557 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:32,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:32,558 INFO L85 PathProgramCache]: Analyzing trace with hash -83565524, now seen corresponding path program 1 times [2024-11-13 12:48:32,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:32,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500057331] [2024-11-13 12:48:32,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:32,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:48:32,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:32,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500057331] [2024-11-13 12:48:32,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500057331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:32,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:32,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:48:32,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038140901] [2024-11-13 12:48:32,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:32,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:48:32,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:32,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:48:32,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:32,894 INFO L87 Difference]: Start difference. First operand 1328 states and 2232 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:33,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:33,211 INFO L93 Difference]: Finished difference Result 2960 states and 4508 transitions. [2024-11-13 12:48:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:48:33,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-13 12:48:33,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:33,224 INFO L225 Difference]: With dead ends: 2960 [2024-11-13 12:48:33,224 INFO L226 Difference]: Without dead ends: 2558 [2024-11-13 12:48:33,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:48:33,227 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 3037 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3037 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:33,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3037 Valid, 3172 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2024-11-13 12:48:33,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1804. [2024-11-13 12:48:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1802 states have (on average 1.602663706992231) internal successors, (2888), 1803 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:33,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2888 transitions. [2024-11-13 12:48:33,340 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2888 transitions. Word has length 54 [2024-11-13 12:48:33,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:33,341 INFO L471 AbstractCegarLoop]: Abstraction has 1804 states and 2888 transitions. [2024-11-13 12:48:33,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:33,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2888 transitions. [2024-11-13 12:48:33,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 12:48:33,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:33,343 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 12:48:33,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 12:48:33,343 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:33,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:33,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1995932972, now seen corresponding path program 1 times [2024-11-13 12:48:33,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:33,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387435018] [2024-11-13 12:48:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:33,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 12:48:33,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:33,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387435018] [2024-11-13 12:48:33,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387435018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:33,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:33,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:48:33,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953381386] [2024-11-13 12:48:33,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:33,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:48:33,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:33,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:48:33,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:33,590 INFO L87 Difference]: Start difference. First operand 1804 states and 2888 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:33,742 INFO L93 Difference]: Finished difference Result 3508 states and 5268 transitions. [2024-11-13 12:48:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:48:33,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-13 12:48:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:33,758 INFO L225 Difference]: With dead ends: 3508 [2024-11-13 12:48:33,758 INFO L226 Difference]: Without dead ends: 2958 [2024-11-13 12:48:33,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:48:33,761 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 3041 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:33,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3147 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2024-11-13 12:48:33,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2552. [2024-11-13 12:48:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2550 states have (on average 1.5356862745098039) internal successors, (3916), 2551 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 3916 transitions. [2024-11-13 12:48:33,883 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 3916 transitions. Word has length 54 [2024-11-13 12:48:33,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:33,883 INFO L471 AbstractCegarLoop]: Abstraction has 2552 states and 3916 transitions. [2024-11-13 12:48:33,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 3916 transitions. [2024-11-13 12:48:33,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-13 12:48:33,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:33,886 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 12:48:33,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 12:48:33,887 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:33,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:33,887 INFO L85 PathProgramCache]: Analyzing trace with hash -518101460, now seen corresponding path program 1 times [2024-11-13 12:48:33,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:33,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655017825] [2024-11-13 12:48:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:33,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 12:48:34,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:34,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655017825] [2024-11-13 12:48:34,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655017825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:34,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:34,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:48:34,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404377760] [2024-11-13 12:48:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:34,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:48:34,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:34,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:48:34,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:34,062 INFO L87 Difference]: Start difference. First operand 2552 states and 3916 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:34,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:34,242 INFO L93 Difference]: Finished difference Result 4056 states and 6024 transitions. [2024-11-13 12:48:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:48:34,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-13 12:48:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:34,257 INFO L225 Difference]: With dead ends: 4056 [2024-11-13 12:48:34,257 INFO L226 Difference]: Without dead ends: 3506 [2024-11-13 12:48:34,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:48:34,260 INFO L432 NwaCegarLoop]: 1546 mSDtfsCounter, 3047 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:34,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 3153 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:34,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2024-11-13 12:48:34,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3100. [2024-11-13 12:48:34,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.5080697224015494) internal successors, (4672), 3099 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:34,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4672 transitions. [2024-11-13 12:48:34,379 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4672 transitions. Word has length 54 [2024-11-13 12:48:34,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:34,379 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 4672 transitions. [2024-11-13 12:48:34,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:34,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4672 transitions. [2024-11-13 12:48:34,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 12:48:34,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:34,381 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] [2024-11-13 12:48:34,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 12:48:34,381 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:34,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:34,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1695590575, now seen corresponding path program 1 times [2024-11-13 12:48:34,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:34,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668851153] [2024-11-13 12:48:34,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:34,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:34,559 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:34,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:34,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668851153] [2024-11-13 12:48:34,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668851153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:34,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:34,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:34,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638855770] [2024-11-13 12:48:34,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:34,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:34,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:34,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:34,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:34,562 INFO L87 Difference]: Start difference. First operand 3100 states and 4672 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:34,655 INFO L93 Difference]: Finished difference Result 5424 states and 7882 transitions. [2024-11-13 12:48:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:34,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-13 12:48:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:34,667 INFO L225 Difference]: With dead ends: 5424 [2024-11-13 12:48:34,668 INFO L226 Difference]: Without dead ends: 3102 [2024-11-13 12:48:34,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:34,672 INFO L432 NwaCegarLoop]: 1526 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:34,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:34,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2024-11-13 12:48:34,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3100. [2024-11-13 12:48:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.4919302775984506) internal successors, (4622), 3099 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:34,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4622 transitions. [2024-11-13 12:48:34,785 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4622 transitions. Word has length 55 [2024-11-13 12:48:34,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:34,786 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 4622 transitions. [2024-11-13 12:48:34,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:34,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4622 transitions. [2024-11-13 12:48:34,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 12:48:34,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:34,788 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] [2024-11-13 12:48:34,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 12:48:34,789 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:34,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:34,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1186964228, now seen corresponding path program 1 times [2024-11-13 12:48:34,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:34,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913029351] [2024-11-13 12:48:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:34,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:34,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:34,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913029351] [2024-11-13 12:48:34,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913029351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:34,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:34,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:34,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64221491] [2024-11-13 12:48:34,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:34,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:34,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:34,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:34,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:34,918 INFO L87 Difference]: Start difference. First operand 3100 states and 4622 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:34,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:34,983 INFO L93 Difference]: Finished difference Result 4019 states and 5882 transitions. [2024-11-13 12:48:34,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:34,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-13 12:48:34,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:34,991 INFO L225 Difference]: With dead ends: 4019 [2024-11-13 12:48:34,992 INFO L226 Difference]: Without dead ends: 1697 [2024-11-13 12:48:34,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:34,996 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 23 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:34,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3019 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:35,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2024-11-13 12:48:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1689. [2024-11-13 12:48:35,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.5986959098992295) internal successors, (2697), 1688 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2697 transitions. [2024-11-13 12:48:35,056 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2697 transitions. Word has length 56 [2024-11-13 12:48:35,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:35,056 INFO L471 AbstractCegarLoop]: Abstraction has 1689 states and 2697 transitions. [2024-11-13 12:48:35,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:35,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2697 transitions. [2024-11-13 12:48:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 12:48:35,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:35,058 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 12:48:35,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 12:48:35,058 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:35,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:35,058 INFO L85 PathProgramCache]: Analyzing trace with hash -80577215, now seen corresponding path program 1 times [2024-11-13 12:48:35,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:35,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926652189] [2024-11-13 12:48:35,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:35,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:35,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:35,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926652189] [2024-11-13 12:48:35,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926652189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:35,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:35,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:35,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80366034] [2024-11-13 12:48:35,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:35,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:35,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:35,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:35,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:35,186 INFO L87 Difference]: Start difference. First operand 1689 states and 2697 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:35,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:35,229 INFO L93 Difference]: Finished difference Result 2143 states and 3311 transitions. [2024-11-13 12:48:35,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:35,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-13 12:48:35,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:35,241 INFO L225 Difference]: With dead ends: 2143 [2024-11-13 12:48:35,245 INFO L226 Difference]: Without dead ends: 1241 [2024-11-13 12:48:35,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:35,247 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 25 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:35,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2024-11-13 12:48:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1239. [2024-11-13 12:48:35,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1237 states have (on average 1.6782538399353275) internal successors, (2076), 1238 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2076 transitions. [2024-11-13 12:48:35,300 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2076 transitions. Word has length 57 [2024-11-13 12:48:35,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:35,300 INFO L471 AbstractCegarLoop]: Abstraction has 1239 states and 2076 transitions. [2024-11-13 12:48:35,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:35,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2076 transitions. [2024-11-13 12:48:35,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 12:48:35,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:35,302 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 12:48:35,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 12:48:35,306 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:35,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash 487452755, now seen corresponding path program 1 times [2024-11-13 12:48:35,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:35,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951583231] [2024-11-13 12:48:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:35,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:48:35,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:35,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951583231] [2024-11-13 12:48:35,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951583231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:48:35,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984908939] [2024-11-13 12:48:35,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:35,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:48:35,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:48:35,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:48:35,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 12:48:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:35,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 12:48:35,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:48:35,984 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:48:35,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:48:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 12:48:36,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984908939] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:48:36,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:48:36,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2024-11-13 12:48:36,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122641646] [2024-11-13 12:48:36,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:48:36,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 12:48:36,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:36,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 12:48:36,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-13 12:48:36,489 INFO L87 Difference]: Start difference. First operand 1239 states and 2076 transitions. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:36,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:36,652 INFO L93 Difference]: Finished difference Result 2301 states and 3470 transitions. [2024-11-13 12:48:36,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 12:48:36,653 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-13 12:48:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:36,661 INFO L225 Difference]: With dead ends: 2301 [2024-11-13 12:48:36,661 INFO L226 Difference]: Without dead ends: 1849 [2024-11-13 12:48:36,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-13 12:48:36,663 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 2938 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2938 SdHoareTripleChecker+Valid, 6114 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:36,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2938 Valid, 6114 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2024-11-13 12:48:36,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1794. [2024-11-13 12:48:36,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1792 states have (on average 1.5385044642857142) internal successors, (2757), 1793 states have internal predecessors, (2757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2757 transitions. [2024-11-13 12:48:36,735 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2757 transitions. Word has length 59 [2024-11-13 12:48:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:36,736 INFO L471 AbstractCegarLoop]: Abstraction has 1794 states and 2757 transitions. [2024-11-13 12:48:36,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:36,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2757 transitions. [2024-11-13 12:48:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 12:48:36,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:36,737 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 12:48:36,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 12:48:36,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 12:48:36,942 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:36,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:36,942 INFO L85 PathProgramCache]: Analyzing trace with hash -836933920, now seen corresponding path program 1 times [2024-11-13 12:48:36,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:36,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325652832] [2024-11-13 12:48:36,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:36,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:39,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:39,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325652832] [2024-11-13 12:48:39,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325652832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:48:39,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992904325] [2024-11-13 12:48:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:39,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:48:39,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:48:39,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:48:39,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 12:48:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:39,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 12:48:39,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:48:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:39,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:48:41,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:41,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992904325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:48:41,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:48:41,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 26 [2024-11-13 12:48:41,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519787862] [2024-11-13 12:48:41,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:48:41,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 12:48:41,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:41,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 12:48:41,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2024-11-13 12:48:41,022 INFO L87 Difference]: Start difference. First operand 1794 states and 2757 transitions. Second operand has 27 states, 27 states have (on average 5.407407407407407) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:41,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:41,960 INFO L93 Difference]: Finished difference Result 3734 states and 5250 transitions. [2024-11-13 12:48:41,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 12:48:41,961 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.407407407407407) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-13 12:48:41,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:41,978 INFO L225 Difference]: With dead ends: 3734 [2024-11-13 12:48:41,980 INFO L226 Difference]: Without dead ends: 2825 [2024-11-13 12:48:41,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=319, Invalid=1087, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 12:48:41,985 INFO L432 NwaCegarLoop]: 1491 mSDtfsCounter, 13662 mSDsluCounter, 4681 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13662 SdHoareTripleChecker+Valid, 6172 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:41,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13662 Valid, 6172 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 12:48:41,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2024-11-13 12:48:42,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2787. [2024-11-13 12:48:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2785 states have (on average 1.4308797127468582) internal successors, (3985), 2786 states have internal predecessors, (3985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 3985 transitions. [2024-11-13 12:48:42,143 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 3985 transitions. Word has length 60 [2024-11-13 12:48:42,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:42,147 INFO L471 AbstractCegarLoop]: Abstraction has 2787 states and 3985 transitions. [2024-11-13 12:48:42,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.407407407407407) internal successors, (146), 26 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:42,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 3985 transitions. [2024-11-13 12:48:42,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 12:48:42,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:42,148 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 12:48:42,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 12:48:42,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:48:42,349 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:42,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:42,349 INFO L85 PathProgramCache]: Analyzing trace with hash -148796334, now seen corresponding path program 1 times [2024-11-13 12:48:42,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:42,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529918236] [2024-11-13 12:48:42,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:42,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:43,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:43,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529918236] [2024-11-13 12:48:43,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529918236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:48:43,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772760784] [2024-11-13 12:48:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:43,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:48:43,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:48:43,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:48:43,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 12:48:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:43,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 12:48:43,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:48:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:45,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:48:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:48:48,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772760784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:48:48,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:48:48,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 15] total 37 [2024-11-13 12:48:48,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398635013] [2024-11-13 12:48:48,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:48:48,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 12:48:48,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:48,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 12:48:48,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 12:48:48,448 INFO L87 Difference]: Start difference. First operand 2787 states and 3985 transitions. Second operand has 37 states, 37 states have (on average 4.27027027027027) internal successors, (158), 37 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:49:21,137 INFO L93 Difference]: Finished difference Result 12128 states and 15862 transitions. [2024-11-13 12:49:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2024-11-13 12:49:21,138 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.27027027027027) internal successors, (158), 37 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-13 12:49:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:49:21,157 INFO L225 Difference]: With dead ends: 12128 [2024-11-13 12:49:21,157 INFO L226 Difference]: Without dead ends: 10280 [2024-11-13 12:49:21,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12080 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=5773, Invalid=25733, Unknown=0, NotChecked=0, Total=31506 [2024-11-13 12:49:21,168 INFO L432 NwaCegarLoop]: 1547 mSDtfsCounter, 15736 mSDsluCounter, 19315 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15736 SdHoareTripleChecker+Valid, 20862 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 12:49:21,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15736 Valid, 20862 Invalid, 2079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 12:49:21,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10280 states. [2024-11-13 12:49:21,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10280 to 7524. [2024-11-13 12:49:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 7522 states have (on average 1.3150757777186919) internal successors, (9892), 7523 states have internal predecessors, (9892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 9892 transitions. [2024-11-13 12:49:21,572 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 9892 transitions. Word has length 60 [2024-11-13 12:49:21,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:21,573 INFO L471 AbstractCegarLoop]: Abstraction has 7524 states and 9892 transitions. [2024-11-13 12:49:21,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.27027027027027) internal successors, (158), 37 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:21,573 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 9892 transitions. [2024-11-13 12:49:21,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 12:49:21,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:21,574 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] [2024-11-13 12:49:21,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:21,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 12:49:21,775 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:49:21,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:21,776 INFO L85 PathProgramCache]: Analyzing trace with hash -525586780, now seen corresponding path program 1 times [2024-11-13 12:49:21,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:21,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426977439] [2024-11-13 12:49:21,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:21,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:22,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:22,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:22,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426977439] [2024-11-13 12:49:22,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426977439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:22,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:49:22,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:49:22,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829031947] [2024-11-13 12:49:22,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:22,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:49:22,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:22,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:49:22,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:49:22,069 INFO L87 Difference]: Start difference. First operand 7524 states and 9892 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:31,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:49:31,799 INFO L93 Difference]: Finished difference Result 9779 states and 14201 transitions. [2024-11-13 12:49:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:49:31,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-13 12:49:31,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:49:31,818 INFO L225 Difference]: With dead ends: 9779 [2024-11-13 12:49:31,818 INFO L226 Difference]: Without dead ends: 9026 [2024-11-13 12:49:31,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:49:31,821 INFO L432 NwaCegarLoop]: 762 mSDtfsCounter, 2319 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:49:31,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2319 Valid, 780 Invalid, 6618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-13 12:49:31,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9026 states. [2024-11-13 12:49:32,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9026 to 9026. [2024-11-13 12:49:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9026 states, 9024 states have (on average 1.331781914893617) internal successors, (12018), 9025 states have internal predecessors, (12018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9026 states to 9026 states and 12018 transitions. [2024-11-13 12:49:32,429 INFO L78 Accepts]: Start accepts. Automaton has 9026 states and 12018 transitions. Word has length 60 [2024-11-13 12:49:32,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:32,429 INFO L471 AbstractCegarLoop]: Abstraction has 9026 states and 12018 transitions. [2024-11-13 12:49:32,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:32,430 INFO L276 IsEmpty]: Start isEmpty. Operand 9026 states and 12018 transitions. [2024-11-13 12:49:32,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 12:49:32,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:32,434 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 12:49:32,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 12:49:32,435 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:49:32,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:32,435 INFO L85 PathProgramCache]: Analyzing trace with hash -735363553, now seen corresponding path program 1 times [2024-11-13 12:49:32,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:32,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356520822] [2024-11-13 12:49:32,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:32,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:33,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:33,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356520822] [2024-11-13 12:49:33,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356520822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:33,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782749620] [2024-11-13 12:49:33,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:33,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:33,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:33,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:33,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 12:49:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:33,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 12:49:33,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:33,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:34,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782749620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:34,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:34,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-13 12:49:34,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460959227] [2024-11-13 12:49:34,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:34,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 12:49:34,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:34,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 12:49:34,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2024-11-13 12:49:34,508 INFO L87 Difference]: Start difference. First operand 9026 states and 12018 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:35,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:49:35,297 INFO L93 Difference]: Finished difference Result 16564 states and 21512 transitions. [2024-11-13 12:49:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 12:49:35,298 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-13 12:49:35,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:49:35,321 INFO L225 Difference]: With dead ends: 16564 [2024-11-13 12:49:35,321 INFO L226 Difference]: Without dead ends: 10422 [2024-11-13 12:49:35,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=253, Invalid=803, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 12:49:35,328 INFO L432 NwaCegarLoop]: 1497 mSDtfsCounter, 15045 mSDsluCounter, 3169 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15045 SdHoareTripleChecker+Valid, 4666 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 12:49:35,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15045 Valid, 4666 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 12:49:35,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10422 states. [2024-11-13 12:49:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10422 to 10374. [2024-11-13 12:49:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10374 states, 10372 states have (on average 1.3132472040107983) internal successors, (13621), 10373 states have internal predecessors, (13621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10374 states to 10374 states and 13621 transitions. [2024-11-13 12:49:35,915 INFO L78 Accepts]: Start accepts. Automaton has 10374 states and 13621 transitions. Word has length 61 [2024-11-13 12:49:35,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:35,915 INFO L471 AbstractCegarLoop]: Abstraction has 10374 states and 13621 transitions. [2024-11-13 12:49:35,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 10374 states and 13621 transitions. [2024-11-13 12:49:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 12:49:35,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:35,921 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 12:49:35,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:36,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:36,122 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:49:36,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1802207024, now seen corresponding path program 1 times [2024-11-13 12:49:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:36,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273268278] [2024-11-13 12:49:36,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:36,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:38,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:38,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273268278] [2024-11-13 12:49:38,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273268278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:38,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000371923] [2024-11-13 12:49:38,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:38,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:38,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:38,299 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:38,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 12:49:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:38,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 12:49:38,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:39,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:40,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000371923] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:40,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:40,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 12] total 41 [2024-11-13 12:49:40,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711874826] [2024-11-13 12:49:40,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:40,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 12:49:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:40,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 12:49:40,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1514, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 12:49:40,971 INFO L87 Difference]: Start difference. First operand 10374 states and 13621 transitions. Second operand has 41 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 41 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:52,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:49:52,955 INFO L93 Difference]: Finished difference Result 14304 states and 18544 transitions. [2024-11-13 12:49:52,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-13 12:49:52,955 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 41 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-13 12:49:52,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:49:52,972 INFO L225 Difference]: With dead ends: 14304 [2024-11-13 12:49:52,972 INFO L226 Difference]: Without dead ends: 10518 [2024-11-13 12:49:52,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2486 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=2423, Invalid=8919, Unknown=0, NotChecked=0, Total=11342 [2024-11-13 12:49:52,979 INFO L432 NwaCegarLoop]: 1571 mSDtfsCounter, 18981 mSDsluCounter, 25657 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18981 SdHoareTripleChecker+Valid, 27228 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 12:49:52,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18981 Valid, 27228 Invalid, 2414 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 12:49:52,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10518 states. [2024-11-13 12:49:53,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10518 to 8942. [2024-11-13 12:49:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8942 states, 8940 states have (on average 1.3228187919463088) internal successors, (11826), 8941 states have internal predecessors, (11826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:53,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8942 states to 8942 states and 11826 transitions. [2024-11-13 12:49:53,419 INFO L78 Accepts]: Start accepts. Automaton has 8942 states and 11826 transitions. Word has length 62 [2024-11-13 12:49:53,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:53,420 INFO L471 AbstractCegarLoop]: Abstraction has 8942 states and 11826 transitions. [2024-11-13 12:49:53,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 41 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:49:53,420 INFO L276 IsEmpty]: Start isEmpty. Operand 8942 states and 11826 transitions. [2024-11-13 12:49:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-13 12:49:53,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:53,422 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-13 12:49:53,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 12:49:53,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:53,625 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:49:53,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:53,625 INFO L85 PathProgramCache]: Analyzing trace with hash 929554685, now seen corresponding path program 1 times [2024-11-13 12:49:53,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:53,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792459629] [2024-11-13 12:49:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:53,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:54,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:54,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792459629] [2024-11-13 12:49:54,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792459629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:49:54,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732097194] [2024-11-13 12:49:54,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:54,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:49:54,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:49:54,807 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:49:54,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 12:49:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:54,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 12:49:54,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:49:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 33 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:56,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:49:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:58,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732097194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:49:58,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:49:58,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-13 12:49:58,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515896247] [2024-11-13 12:49:58,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:49:58,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 12:49:58,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 12:49:58,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-11-13 12:49:58,938 INFO L87 Difference]: Start difference. First operand 8942 states and 11826 transitions. Second operand has 27 states, 27 states have (on average 7.962962962962963) internal successors, (215), 26 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:00,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:00,275 INFO L93 Difference]: Finished difference Result 12524 states and 16337 transitions. [2024-11-13 12:50:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 12:50:00,276 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.962962962962963) internal successors, (215), 26 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-13 12:50:00,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:00,295 INFO L225 Difference]: With dead ends: 12524 [2024-11-13 12:50:00,295 INFO L226 Difference]: Without dead ends: 9142 [2024-11-13 12:50:00,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 12:50:00,304 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 14858 mSDsluCounter, 13601 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14858 SdHoareTripleChecker+Valid, 15111 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:00,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14858 Valid, 15111 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 12:50:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9142 states. [2024-11-13 12:50:01,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9142 to 7816. [2024-11-13 12:50:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7816 states, 7814 states have (on average 1.326721269516253) internal successors, (10367), 7815 states have internal predecessors, (10367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 10367 transitions. [2024-11-13 12:50:01,114 INFO L78 Accepts]: Start accepts. Automaton has 7816 states and 10367 transitions. Word has length 99 [2024-11-13 12:50:01,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:01,114 INFO L471 AbstractCegarLoop]: Abstraction has 7816 states and 10367 transitions. [2024-11-13 12:50:01,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.962962962962963) internal successors, (215), 26 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:01,115 INFO L276 IsEmpty]: Start isEmpty. Operand 7816 states and 10367 transitions. [2024-11-13 12:50:01,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-13 12:50:01,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:01,119 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 12:50:01,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 12:50:01,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:01,323 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:01,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:01,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1617692271, now seen corresponding path program 1 times [2024-11-13 12:50:01,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:01,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265055147] [2024-11-13 12:50:01,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:01,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 34 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:02,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:02,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265055147] [2024-11-13 12:50:02,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265055147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:50:02,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578042514] [2024-11-13 12:50:02,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:02,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:02,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:50:02,761 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:50:02,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 12:50:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:02,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 12:50:02,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:50:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:04,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:50:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 34 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:06,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578042514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:50:06,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:50:06,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2024-11-13 12:50:06,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506058422] [2024-11-13 12:50:06,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:50:06,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 12:50:06,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:06,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 12:50:06,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2024-11-13 12:50:06,476 INFO L87 Difference]: Start difference. First operand 7816 states and 10367 transitions. Second operand has 31 states, 31 states have (on average 7.451612903225806) internal successors, (231), 30 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:09,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:09,139 INFO L93 Difference]: Finished difference Result 10774 states and 14019 transitions. [2024-11-13 12:50:09,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 12:50:09,140 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.451612903225806) internal successors, (231), 30 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-13 12:50:09,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:09,157 INFO L225 Difference]: With dead ends: 10774 [2024-11-13 12:50:09,157 INFO L226 Difference]: Without dead ends: 7902 [2024-11-13 12:50:09,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=669, Invalid=2411, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 12:50:09,162 INFO L432 NwaCegarLoop]: 1537 mSDtfsCounter, 16573 mSDsluCounter, 12306 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16573 SdHoareTripleChecker+Valid, 13843 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:09,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16573 Valid, 13843 Invalid, 877 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 12:50:09,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7902 states. [2024-11-13 12:50:09,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7902 to 7816. [2024-11-13 12:50:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7816 states, 7814 states have (on average 1.3212183260813923) internal successors, (10324), 7815 states have internal predecessors, (10324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:09,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 10324 transitions. [2024-11-13 12:50:09,646 INFO L78 Accepts]: Start accepts. Automaton has 7816 states and 10324 transitions. Word has length 99 [2024-11-13 12:50:09,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:09,647 INFO L471 AbstractCegarLoop]: Abstraction has 7816 states and 10324 transitions. [2024-11-13 12:50:09,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.451612903225806) internal successors, (231), 30 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:09,647 INFO L276 IsEmpty]: Start isEmpty. Operand 7816 states and 10324 transitions. [2024-11-13 12:50:09,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-13 12:50:09,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:09,651 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 12:50:09,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 12:50:09,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:09,852 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:09,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:09,852 INFO L85 PathProgramCache]: Analyzing trace with hash 136585327, now seen corresponding path program 1 times [2024-11-13 12:50:09,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:09,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059722064] [2024-11-13 12:50:09,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:09,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 24 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:11,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:11,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059722064] [2024-11-13 12:50:11,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059722064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:50:11,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382136849] [2024-11-13 12:50:11,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:11,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:11,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:50:11,360 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:50:11,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 12:50:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:11,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 12:50:11,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:50:12,871 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:12,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:50:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:15,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382136849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:50:15,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:50:15,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 11] total 40 [2024-11-13 12:50:15,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352938809] [2024-11-13 12:50:15,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:50:15,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 12:50:15,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:15,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 12:50:15,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1488, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 12:50:15,250 INFO L87 Difference]: Start difference. First operand 7816 states and 10324 transitions. Second operand has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 40 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:22,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:50:22,472 INFO L93 Difference]: Finished difference Result 12802 states and 16549 transitions. [2024-11-13 12:50:22,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-13 12:50:22,473 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 40 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-13 12:50:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:50:22,489 INFO L225 Difference]: With dead ends: 12802 [2024-11-13 12:50:22,489 INFO L226 Difference]: Without dead ends: 10546 [2024-11-13 12:50:22,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2534 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1910, Invalid=8596, Unknown=0, NotChecked=0, Total=10506 [2024-11-13 12:50:22,497 INFO L432 NwaCegarLoop]: 1554 mSDtfsCounter, 20692 mSDsluCounter, 24866 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20692 SdHoareTripleChecker+Valid, 26420 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 12:50:22,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20692 Valid, 26420 Invalid, 2270 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 12:50:22,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10546 states. [2024-11-13 12:50:23,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10546 to 8920. [2024-11-13 12:50:23,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8920 states, 8918 states have (on average 1.3000672796591164) internal successors, (11594), 8919 states have internal predecessors, (11594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:23,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8920 states to 8920 states and 11594 transitions. [2024-11-13 12:50:23,025 INFO L78 Accepts]: Start accepts. Automaton has 8920 states and 11594 transitions. Word has length 99 [2024-11-13 12:50:23,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:50:23,025 INFO L471 AbstractCegarLoop]: Abstraction has 8920 states and 11594 transitions. [2024-11-13 12:50:23,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.902439024390244) internal successors, (283), 40 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:50:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 8920 states and 11594 transitions. [2024-11-13 12:50:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-13 12:50:23,028 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:50:23,028 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 12:50:23,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 12:50:23,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:23,229 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:50:23,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:50:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash -829652972, now seen corresponding path program 1 times [2024-11-13 12:50:23,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:50:23,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100163808] [2024-11-13 12:50:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:23,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:50:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:25,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:50:25,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100163808] [2024-11-13 12:50:25,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100163808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:50:25,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981146813] [2024-11-13 12:50:25,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:50:25,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:50:25,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:50:25,233 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:50:25,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 12:50:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:50:25,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 12:50:25,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:50:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 55 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 12:50:29,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:50:41,568 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:50:41,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981146813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:50:41,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:50:41,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 29] total 71 [2024-11-13 12:50:41,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307082798] [2024-11-13 12:50:41,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:50:41,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-13 12:50:41,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:50:41,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-13 12:50:41,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=4484, Unknown=0, NotChecked=0, Total=4970 [2024-11-13 12:50:41,571 INFO L87 Difference]: Start difference. First operand 8920 states and 11594 transitions. Second operand has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:56:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:56:58,532 INFO L93 Difference]: Finished difference Result 21977 states and 27240 transitions. [2024-11-13 12:56:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 347 states. [2024-11-13 12:56:58,532 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-13 12:56:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:56:58,546 INFO L225 Difference]: With dead ends: 21977 [2024-11-13 12:56:58,546 INFO L226 Difference]: Without dead ends: 19401 [2024-11-13 12:56:58,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 407 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67149 ImplicationChecksByTransitivity, 369.8s TimeCoverageRelationStatistics Valid=21813, Invalid=145059, Unknown=0, NotChecked=0, Total=166872 [2024-11-13 12:56:58,567 INFO L432 NwaCegarLoop]: 1630 mSDtfsCounter, 35344 mSDsluCounter, 32112 mSDsCounter, 0 mSdLazyCounter, 4883 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35344 SdHoareTripleChecker+Valid, 33742 SdHoareTripleChecker+Invalid, 5347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 4883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:56:58,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35344 Valid, 33742 Invalid, 5347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [464 Valid, 4883 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2024-11-13 12:56:58,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19401 states. [2024-11-13 12:56:59,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19401 to 13331. [2024-11-13 12:56:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13331 states, 13329 states have (on average 1.2667867056793458) internal successors, (16885), 13330 states have internal predecessors, (16885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:56:59,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13331 states to 13331 states and 16885 transitions. [2024-11-13 12:56:59,952 INFO L78 Accepts]: Start accepts. Automaton has 13331 states and 16885 transitions. Word has length 100 [2024-11-13 12:56:59,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:56:59,952 INFO L471 AbstractCegarLoop]: Abstraction has 13331 states and 16885 transitions. [2024-11-13 12:56:59,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.788732394366197) internal successors, (269), 71 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:56:59,952 INFO L276 IsEmpty]: Start isEmpty. Operand 13331 states and 16885 transitions. [2024-11-13 12:56:59,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-13 12:56:59,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:56:59,955 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:56:59,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 12:57:00,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 12:57:00,160 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:57:00,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:57:00,160 INFO L85 PathProgramCache]: Analyzing trace with hash 974206219, now seen corresponding path program 1 times [2024-11-13 12:57:00,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:57:00,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142099152] [2024-11-13 12:57:00,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:57:00,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:57:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:57:01,506 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:57:01,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:57:01,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142099152] [2024-11-13 12:57:01,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142099152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:57:01,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841344636] [2024-11-13 12:57:01,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:57:01,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:57:01,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:57:01,509 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:57:01,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 12:57:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:57:01,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 12:57:01,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:57:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:57:03,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:57:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 35 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:57:08,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841344636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:57:08,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:57:08,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 17] total 51 [2024-11-13 12:57:08,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98042749] [2024-11-13 12:57:08,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:57:08,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-13 12:57:08,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:57:08,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-13 12:57:08,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=2264, Unknown=0, NotChecked=0, Total=2550 [2024-11-13 12:57:08,250 INFO L87 Difference]: Start difference. First operand 13331 states and 16885 transitions. Second operand has 51 states, 51 states have (on average 5.215686274509804) internal successors, (266), 51 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:57:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:57:23,479 INFO L93 Difference]: Finished difference Result 25338 states and 31243 transitions. [2024-11-13 12:57:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-13 12:57:23,480 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.215686274509804) internal successors, (266), 51 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-13 12:57:23,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:57:23,495 INFO L225 Difference]: With dead ends: 25338 [2024-11-13 12:57:23,495 INFO L226 Difference]: Without dead ends: 20670 [2024-11-13 12:57:23,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3637 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=2811, Invalid=10761, Unknown=0, NotChecked=0, Total=13572 [2024-11-13 12:57:23,500 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 18181 mSDsluCounter, 26304 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18181 SdHoareTripleChecker+Valid, 27857 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 12:57:23,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18181 Valid, 27857 Invalid, 1386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [135 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 12:57:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20670 states. [2024-11-13 12:57:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20670 to 17749. [2024-11-13 12:57:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17749 states, 17747 states have (on average 1.2473657519580774) internal successors, (22137), 17748 states have internal predecessors, (22137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:57:25,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17749 states to 17749 states and 22137 transitions. [2024-11-13 12:57:25,463 INFO L78 Accepts]: Start accepts. Automaton has 17749 states and 22137 transitions. Word has length 101 [2024-11-13 12:57:25,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:57:25,463 INFO L471 AbstractCegarLoop]: Abstraction has 17749 states and 22137 transitions. [2024-11-13 12:57:25,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.215686274509804) internal successors, (266), 51 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:57:25,463 INFO L276 IsEmpty]: Start isEmpty. Operand 17749 states and 22137 transitions. [2024-11-13 12:57:25,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-13 12:57:25,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:57:25,465 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:57:25,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 12:57:25,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 12:57:25,666 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:57:25,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:57:25,667 INFO L85 PathProgramCache]: Analyzing trace with hash 941958187, now seen corresponding path program 1 times [2024-11-13 12:57:25,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:57:25,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782034660] [2024-11-13 12:57:25,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:57:25,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:57:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:57:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:57:27,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:57:27,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782034660] [2024-11-13 12:57:27,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782034660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:57:27,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687447914] [2024-11-13 12:57:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:57:27,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:57:27,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:57:27,749 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:57:27,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 12:57:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:57:27,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 12:57:27,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:57:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:57:30,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:57:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:57:32,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687447914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:57:32,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:57:32,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 11] total 45 [2024-11-13 12:57:32,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067276875] [2024-11-13 12:57:32,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:57:32,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 12:57:32,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:57:32,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 12:57:32,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1823, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 12:57:32,974 INFO L87 Difference]: Start difference. First operand 17749 states and 22137 transitions. Second operand has 45 states, 45 states have (on average 6.155555555555556) internal successors, (277), 45 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:57:55,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:57:55,827 INFO L93 Difference]: Finished difference Result 37120 states and 45381 transitions. [2024-11-13 12:57:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-13 12:57:55,828 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.155555555555556) internal successors, (277), 45 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-13 12:57:55,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:57:55,850 INFO L225 Difference]: With dead ends: 37120 [2024-11-13 12:57:55,850 INFO L226 Difference]: Without dead ends: 24604 [2024-11-13 12:57:55,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4678 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=3186, Invalid=15996, Unknown=0, NotChecked=0, Total=19182 [2024-11-13 12:57:55,861 INFO L432 NwaCegarLoop]: 1591 mSDtfsCounter, 25375 mSDsluCounter, 31968 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25375 SdHoareTripleChecker+Valid, 33559 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 12:57:55,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25375 Valid, 33559 Invalid, 2586 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 12:57:55,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24604 states. [2024-11-13 12:57:58,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24604 to 18810. [2024-11-13 12:57:58,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18810 states, 18808 states have (on average 1.2354317311782221) internal successors, (23236), 18809 states have internal predecessors, (23236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:57:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18810 states to 18810 states and 23236 transitions. [2024-11-13 12:57:58,995 INFO L78 Accepts]: Start accepts. Automaton has 18810 states and 23236 transitions. Word has length 101 [2024-11-13 12:57:58,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:57:58,996 INFO L471 AbstractCegarLoop]: Abstraction has 18810 states and 23236 transitions. [2024-11-13 12:57:58,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.155555555555556) internal successors, (277), 45 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:57:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 18810 states and 23236 transitions. [2024-11-13 12:57:58,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-13 12:57:58,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:57:58,998 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-13 12:57:59,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 12:57:59,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 12:57:59,199 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:57:59,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:57:59,200 INFO L85 PathProgramCache]: Analyzing trace with hash -51934290, now seen corresponding path program 1 times [2024-11-13 12:57:59,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:57:59,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247871706] [2024-11-13 12:57:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:57:59,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:57:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:58:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 31 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:58:01,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:58:01,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247871706] [2024-11-13 12:58:01,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247871706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:58:01,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650941326] [2024-11-13 12:58:01,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:58:01,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:58:01,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:58:01,771 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:58:01,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 12:58:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:58:01,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 12:58:01,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:58:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 31 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:58:06,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:58:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 27 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:58:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650941326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:58:17,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:58:17,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28, 25] total 76 [2024-11-13 12:58:17,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406538542] [2024-11-13 12:58:17,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:58:17,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-11-13 12:58:17,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:58:17,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-11-13 12:58:17,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=5140, Unknown=0, NotChecked=0, Total=5700 [2024-11-13 12:58:17,293 INFO L87 Difference]: Start difference. First operand 18810 states and 23236 transitions. Second operand has 76 states, 76 states have (on average 3.723684210526316) internal successors, (283), 76 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:00:46,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:00:46,214 INFO L93 Difference]: Finished difference Result 45955 states and 55364 transitions. [2024-11-13 13:00:46,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2024-11-13 13:00:46,214 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 3.723684210526316) internal successors, (283), 76 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-13 13:00:46,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:00:46,245 INFO L225 Difference]: With dead ends: 45955 [2024-11-13 13:00:46,246 INFO L226 Difference]: Without dead ends: 40300 [2024-11-13 13:00:46,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42323 ImplicationChecksByTransitivity, 142.5s TimeCoverageRelationStatistics Valid=15688, Invalid=92882, Unknown=0, NotChecked=0, Total=108570 [2024-11-13 13:00:46,255 INFO L432 NwaCegarLoop]: 1674 mSDtfsCounter, 41537 mSDsluCounter, 42757 mSDsCounter, 0 mSdLazyCounter, 4081 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41537 SdHoareTripleChecker+Valid, 44431 SdHoareTripleChecker+Invalid, 4388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 4081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:00:46,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41537 Valid, 44431 Invalid, 4388 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [307 Valid, 4081 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-13 13:00:46,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40300 states. [2024-11-13 13:00:48,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40300 to 20067. [2024-11-13 13:00:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20067 states, 20065 states have (on average 1.2325442312484425) internal successors, (24731), 20066 states have internal predecessors, (24731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:00:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20067 states to 20067 states and 24731 transitions. [2024-11-13 13:00:49,031 INFO L78 Accepts]: Start accepts. Automaton has 20067 states and 24731 transitions. Word has length 102 [2024-11-13 13:00:49,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:00:49,032 INFO L471 AbstractCegarLoop]: Abstraction has 20067 states and 24731 transitions. [2024-11-13 13:00:49,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 3.723684210526316) internal successors, (283), 76 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:00:49,032 INFO L276 IsEmpty]: Start isEmpty. Operand 20067 states and 24731 transitions. [2024-11-13 13:00:49,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 13:00:49,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:00:49,034 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:00:49,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 13:00:49,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 13:00:49,234 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:00:49,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:00:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1591084557, now seen corresponding path program 1 times [2024-11-13 13:00:49,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:00:49,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763523195] [2024-11-13 13:00:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:00:49,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:00:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:00:50,156 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:00:50,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:00:50,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763523195] [2024-11-13 13:00:50,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763523195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:00:50,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640876075] [2024-11-13 13:00:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:00:50,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:00:50,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:00:50,159 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:00:50,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:00:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:00:50,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 13:00:50,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:00:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:00:51,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:00:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 23 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:00:53,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640876075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:00:53,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:00:53,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 39 [2024-11-13 13:00:53,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176083347] [2024-11-13 13:00:53,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:00:53,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 13:00:53,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:00:53,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 13:00:53,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1324, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 13:00:53,230 INFO L87 Difference]: Start difference. First operand 20067 states and 24731 transitions. Second operand has 39 states, 39 states have (on average 7.384615384615385) internal successors, (288), 39 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:00:58,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:00:58,764 INFO L93 Difference]: Finished difference Result 44102 states and 53583 transitions. [2024-11-13 13:00:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 13:00:58,765 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.384615384615385) internal successors, (288), 39 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-13 13:00:58,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:00:58,785 INFO L225 Difference]: With dead ends: 44102 [2024-11-13 13:00:58,785 INFO L226 Difference]: Without dead ends: 29338 [2024-11-13 13:00:58,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=700, Invalid=3332, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 13:00:58,795 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 16842 mSDsluCounter, 17307 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16842 SdHoareTripleChecker+Valid, 18867 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:00:58,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16842 Valid, 18867 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:00:58,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29338 states. [2024-11-13 13:01:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29338 to 20143. [2024-11-13 13:01:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20143 states, 20141 states have (on average 1.2272479022888636) internal successors, (24718), 20142 states have internal predecessors, (24718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:01,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20143 states to 20143 states and 24718 transitions. [2024-11-13 13:01:01,648 INFO L78 Accepts]: Start accepts. Automaton has 20143 states and 24718 transitions. Word has length 103 [2024-11-13 13:01:01,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:01,648 INFO L471 AbstractCegarLoop]: Abstraction has 20143 states and 24718 transitions. [2024-11-13 13:01:01,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.384615384615385) internal successors, (288), 39 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 20143 states and 24718 transitions. [2024-11-13 13:01:01,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 13:01:01,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:01,650 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:01,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:01:01,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 13:01:01,851 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:01,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:01,851 INFO L85 PathProgramCache]: Analyzing trace with hash 665496877, now seen corresponding path program 1 times [2024-11-13 13:01:01,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:01,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072563704] [2024-11-13 13:01:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:01,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:02,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072563704] [2024-11-13 13:01:02,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072563704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:02,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827769684] [2024-11-13 13:01:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:02,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:02,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:02,522 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:02,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 13:01:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:02,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 13:01:02,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:04,017 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 51 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:04,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 46 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:05,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827769684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:05,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:01:05,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 12] total 34 [2024-11-13 13:01:05,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595002574] [2024-11-13 13:01:05,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:05,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 13:01:05,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:05,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 13:01:05,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 13:01:05,806 INFO L87 Difference]: Start difference. First operand 20143 states and 24718 transitions. Second operand has 34 states, 34 states have (on average 7.176470588235294) internal successors, (244), 34 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:10,312 INFO L93 Difference]: Finished difference Result 38129 states and 46157 transitions. [2024-11-13 13:01:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 13:01:10,313 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.176470588235294) internal successors, (244), 34 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-13 13:01:10,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:10,332 INFO L225 Difference]: With dead ends: 38129 [2024-11-13 13:01:10,332 INFO L226 Difference]: Without dead ends: 22429 [2024-11-13 13:01:10,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=496, Invalid=1760, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 13:01:10,341 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 19115 mSDsluCounter, 13806 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19115 SdHoareTripleChecker+Valid, 15349 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:10,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19115 Valid, 15349 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:01:10,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22429 states. [2024-11-13 13:01:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22429 to 18157. [2024-11-13 13:01:13,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18157 states, 18155 states have (on average 1.2304048471495457) internal successors, (22338), 18156 states have internal predecessors, (22338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18157 states to 18157 states and 22338 transitions. [2024-11-13 13:01:13,061 INFO L78 Accepts]: Start accepts. Automaton has 18157 states and 22338 transitions. Word has length 103 [2024-11-13 13:01:13,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:13,062 INFO L471 AbstractCegarLoop]: Abstraction has 18157 states and 22338 transitions. [2024-11-13 13:01:13,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.176470588235294) internal successors, (244), 34 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:13,062 INFO L276 IsEmpty]: Start isEmpty. Operand 18157 states and 22338 transitions. [2024-11-13 13:01:13,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 13:01:13,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:13,063 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:13,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 13:01:13,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:13,263 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:13,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:13,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1698223565, now seen corresponding path program 1 times [2024-11-13 13:01:13,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:13,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551986337] [2024-11-13 13:01:13,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:13,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:14,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551986337] [2024-11-13 13:01:14,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551986337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287982587] [2024-11-13 13:01:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:14,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:14,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:14,815 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:14,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 13:01:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:14,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 13:01:14,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 33 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:16,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 34 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:17,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287982587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:17,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:01:17,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13, 12] total 45 [2024-11-13 13:01:17,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207396836] [2024-11-13 13:01:17,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:17,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 13:01:17,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 13:01:17,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1817, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 13:01:17,963 INFO L87 Difference]: Start difference. First operand 18157 states and 22338 transitions. Second operand has 45 states, 45 states have (on average 6.177777777777778) internal successors, (278), 45 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:01:28,157 INFO L93 Difference]: Finished difference Result 34013 states and 41210 transitions. [2024-11-13 13:01:28,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-13 13:01:28,157 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.177777777777778) internal successors, (278), 45 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-13 13:01:28,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:01:28,174 INFO L225 Difference]: With dead ends: 34013 [2024-11-13 13:01:28,174 INFO L226 Difference]: Without dead ends: 21229 [2024-11-13 13:01:28,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1756 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1665, Invalid=7455, Unknown=0, NotChecked=0, Total=9120 [2024-11-13 13:01:28,181 INFO L432 NwaCegarLoop]: 1608 mSDtfsCounter, 28813 mSDsluCounter, 17115 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28813 SdHoareTripleChecker+Valid, 18723 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:01:28,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28813 Valid, 18723 Invalid, 2068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 13:01:28,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21229 states. [2024-11-13 13:01:31,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21229 to 17947. [2024-11-13 13:01:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17947 states, 17945 states have (on average 1.2292560601838953) internal successors, (22059), 17946 states have internal predecessors, (22059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:31,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17947 states to 17947 states and 22059 transitions. [2024-11-13 13:01:31,197 INFO L78 Accepts]: Start accepts. Automaton has 17947 states and 22059 transitions. Word has length 103 [2024-11-13 13:01:31,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:01:31,197 INFO L471 AbstractCegarLoop]: Abstraction has 17947 states and 22059 transitions. [2024-11-13 13:01:31,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.177777777777778) internal successors, (278), 45 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:01:31,197 INFO L276 IsEmpty]: Start isEmpty. Operand 17947 states and 22059 transitions. [2024-11-13 13:01:31,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-13 13:01:31,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:01:31,198 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:01:31,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 13:01:31,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:31,399 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:01:31,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:01:31,399 INFO L85 PathProgramCache]: Analyzing trace with hash -763513650, now seen corresponding path program 1 times [2024-11-13 13:01:31,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:01:31,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855868854] [2024-11-13 13:01:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:31,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:01:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 32 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:33,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:01:33,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855868854] [2024-11-13 13:01:33,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855868854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:01:33,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693284394] [2024-11-13 13:01:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:01:33,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:01:33,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:01:33,099 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:01:33,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_642bbd23-feeb-425a-8bf7-ebbb56fe591f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 13:01:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:01:33,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 13:01:33,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:01:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 33 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:36,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:01:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 28 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:01:47,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693284394] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:01:47,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:01:47,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 27] total 71 [2024-11-13 13:01:47,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508295698] [2024-11-13 13:01:47,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:01:47,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-13 13:01:47,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:01:47,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-13 13:01:47,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=4423, Unknown=0, NotChecked=0, Total=4970 [2024-11-13 13:01:47,303 INFO L87 Difference]: Start difference. First operand 17947 states and 22059 transitions. Second operand has 71 states, 71 states have (on average 4.056338028169014) internal successors, (288), 71 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)