./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e00c3fe8d0c18f678a1828bfe849f51bd28f58902f8fb74e3907dba377893684 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:59:27,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:59:27,706 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 04:59:27,711 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:59:27,711 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:59:27,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:59:27,754 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:59:27,754 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:59:27,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:59:27,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:59:27,755 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:59:27,756 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:59:27,756 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:59:27,756 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:59:27,757 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:59:27,760 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:59:27,761 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:59:27,761 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:59:27,761 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:59:27,762 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:59:27,762 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:59:27,767 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:59:27,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:59:27,770 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:59:27,770 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:59:27,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:59:27,771 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:59:27,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:59:27,771 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:59:27,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:59:27,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:59:27,776 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:59:27,776 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:59:27,777 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:59:27,777 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:59:27,777 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:59:27,777 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:59:27,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:59:27,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:59:27,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:59:27,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:59:27,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:59:27,780 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:59:27,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:59:27,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:59:27,780 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:59:27,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:59:27,781 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e00c3fe8d0c18f678a1828bfe849f51bd28f58902f8fb74e3907dba377893684 [2024-11-09 04:59:28,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:59:28,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:59:28,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:59:28,121 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:59:28,122 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:59:28,123 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c Unable to find full path for "g++" [2024-11-09 04:59:30,267 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:59:31,042 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:59:31,043 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c [2024-11-09 04:59:31,104 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/data/d2ae05194/6adb0ad655c94cf98d5be126a913a6b6/FLAG2ffc0bd30 [2024-11-09 04:59:31,339 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/data/d2ae05194/6adb0ad655c94cf98d5be126a913a6b6 [2024-11-09 04:59:31,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:59:31,345 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:59:31,346 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:59:31,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:59:31,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:59:31,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:59:31" (1/1) ... [2024-11-09 04:59:31,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621f1a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:31, skipping insertion in model container [2024-11-09 04:59:31,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:59:31" (1/1) ... [2024-11-09 04:59:31,625 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:59:34,090 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_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c[381679,381692] [2024-11-09 04:59:34,131 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_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c[383339,383352] [2024-11-09 04:59:34,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:59:34,367 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:59:35,602 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_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c[381679,381692] [2024-11-09 04:59:35,608 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_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/sv-benchmarks/c/combinations/Problem05_label43+token_ring.04.cil-1.c[383339,383352] [2024-11-09 04:59:35,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:59:35,737 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:59:35,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:35 WrapperNode [2024-11-09 04:59:35,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:59:35,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:59:35,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:59:35,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:59:35,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:35" (1/1) ... [2024-11-09 04:59:35,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:35" (1/1) ... [2024-11-09 04:59:36,342 INFO L138 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12745 [2024-11-09 04:59:36,343 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:59:36,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:59:36,344 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:59:36,344 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:59:36,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:35" (1/1) ... [2024-11-09 04:59:36,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:35" (1/1) ... [2024-11-09 04:59:36,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:35" (1/1) ... [2024-11-09 04:59:36,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:35" (1/1) ... [2024-11-09 04:59:36,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:35" (1/1) ... [2024-11-09 04:59:36,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:35" (1/1) ... [2024-11-09 04:59:36,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:35" (1/1) ... [2024-11-09 04:59:36,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:35" (1/1) ... [2024-11-09 04:59:36,921 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:59:36,922 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:59:36,923 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:59:36,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:59:36,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:35" (1/1) ... [2024-11-09 04:59:36,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:59:36,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:36,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:59:36,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:59:36,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:59:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-09 04:59:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-09 04:59:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-09 04:59:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-09 04:59:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-09 04:59:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-09 04:59:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-09 04:59:36,996 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-09 04:59:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-09 04:59:36,996 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-09 04:59:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-09 04:59:36,996 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-09 04:59:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:59:36,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:59:36,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:59:37,130 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:59:37,133 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:59:47,000 INFO L? ?]: Removed 1707 outVars from TransFormulas that were not future-live. [2024-11-09 04:59:47,000 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:59:49,576 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:59:49,576 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-09 04:59:49,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:59:49 BoogieIcfgContainer [2024-11-09 04:59:49,577 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:59:49,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:59:49,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:59:49,583 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:59:49,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:59:31" (1/3) ... [2024-11-09 04:59:49,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747b14bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:59:49, skipping insertion in model container [2024-11-09 04:59:49,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:59:35" (2/3) ... [2024-11-09 04:59:49,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747b14bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:59:49, skipping insertion in model container [2024-11-09 04:59:49,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:59:49" (3/3) ... [2024-11-09 04:59:49,591 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.04.cil-1.c [2024-11-09 04:59:49,611 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:59:49,612 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 04:59:49,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:59:49,733 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=FINITE_AUTOMATA, 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;@3be0aff2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:59:49,733 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 04:59:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1721 states have (on average 1.9697850087158628) internal successors, (3390), 1724 states have internal predecessors, (3390), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-09 04:59:49,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 04:59:49,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:49,757 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] [2024-11-09 04:59:49,759 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:49,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:49,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1580153208, now seen corresponding path program 1 times [2024-11-09 04:59:49,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:49,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310944946] [2024-11-09 04:59:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:49,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:59:50,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:50,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310944946] [2024-11-09 04:59:50,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310944946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:59:50,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:59:50,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:59:50,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895353914] [2024-11-09 04:59:50,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:59:50,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:59:50,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:50,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:59:50,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:59:50,337 INFO L87 Difference]: Start difference. First operand has 1748 states, 1721 states have (on average 1.9697850087158628) internal successors, (3390), 1724 states have internal predecessors, (3390), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:59:51,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:51,380 INFO L93 Difference]: Finished difference Result 3584 states and 6994 transitions. [2024-11-09 04:59:51,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:59:51,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-11-09 04:59:51,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:51,409 INFO L225 Difference]: With dead ends: 3584 [2024-11-09 04:59:51,409 INFO L226 Difference]: Without dead ends: 1835 [2024-11-09 04:59:51,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:59:51,426 INFO L432 NwaCegarLoop]: 3281 mSDtfsCounter, 3525 mSDsluCounter, 3215 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3525 SdHoareTripleChecker+Valid, 6496 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:51,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3525 Valid, 6496 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 04:59:51,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2024-11-09 04:59:51,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1834. [2024-11-09 04:59:51,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1788 states have (on average 1.9429530201342282) internal successors, (3474), 1791 states have internal predecessors, (3474), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-09 04:59:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 3538 transitions. [2024-11-09 04:59:51,587 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 3538 transitions. Word has length 43 [2024-11-09 04:59:51,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:51,588 INFO L471 AbstractCegarLoop]: Abstraction has 1834 states and 3538 transitions. [2024-11-09 04:59:51,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:59:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 3538 transitions. [2024-11-09 04:59:51,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 04:59:51,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:51,596 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:51,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:59:51,597 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:51,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:51,599 INFO L85 PathProgramCache]: Analyzing trace with hash 140916878, now seen corresponding path program 1 times [2024-11-09 04:59:51,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:51,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853154038] [2024-11-09 04:59:51,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:51,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 04:59:51,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:51,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853154038] [2024-11-09 04:59:51,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853154038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:59:51,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957267607] [2024-11-09 04:59:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:51,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:51,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:51,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:59:51,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:59:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:52,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:59:52,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 04:59:52,152 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:59:52,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957267607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:59:52,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:59:52,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 04:59:52,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162796952] [2024-11-09 04:59:52,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:59:52,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:59:52,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:52,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:59:52,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:59:52,159 INFO L87 Difference]: Start difference. First operand 1834 states and 3538 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 04:59:52,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:52,701 INFO L93 Difference]: Finished difference Result 2203 states and 4065 transitions. [2024-11-09 04:59:52,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:59:52,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2024-11-09 04:59:52,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:52,717 INFO L225 Difference]: With dead ends: 2203 [2024-11-09 04:59:52,718 INFO L226 Difference]: Without dead ends: 2015 [2024-11-09 04:59:52,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:59:52,721 INFO L432 NwaCegarLoop]: 3211 mSDtfsCounter, 3386 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3386 SdHoareTripleChecker+Valid, 3321 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:52,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3386 Valid, 3321 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:59:52,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2024-11-09 04:59:52,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 2011. [2024-11-09 04:59:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 1927 states have (on average 1.9019200830306175) internal successors, (3665), 1931 states have internal predecessors, (3665), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-09 04:59:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 3781 transitions. [2024-11-09 04:59:52,797 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 3781 transitions. Word has length 81 [2024-11-09 04:59:52,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:52,798 INFO L471 AbstractCegarLoop]: Abstraction has 2011 states and 3781 transitions. [2024-11-09 04:59:52,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 04:59:52,798 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 3781 transitions. [2024-11-09 04:59:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 04:59:52,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:52,808 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:52,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 04:59:53,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:53,009 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:53,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:53,009 INFO L85 PathProgramCache]: Analyzing trace with hash 861010030, now seen corresponding path program 1 times [2024-11-09 04:59:53,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:53,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547622162] [2024-11-09 04:59:53,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:53,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 04:59:53,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:53,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547622162] [2024-11-09 04:59:53,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547622162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:59:53,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691768770] [2024-11-09 04:59:53,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:53,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:53,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:53,258 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:59:53,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:59:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:53,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:59:53,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 04:59:53,468 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:59:53,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691768770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:59:53,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:59:53,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-09 04:59:53,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575250840] [2024-11-09 04:59:53,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:59:53,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:59:53,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:53,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:59:53,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:59:53,473 INFO L87 Difference]: Start difference. First operand 2011 states and 3781 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 04:59:54,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:54,018 INFO L93 Difference]: Finished difference Result 2728 states and 4796 transitions. [2024-11-09 04:59:54,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:59:54,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2024-11-09 04:59:54,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:54,031 INFO L225 Difference]: With dead ends: 2728 [2024-11-09 04:59:54,031 INFO L226 Difference]: Without dead ends: 2363 [2024-11-09 04:59:54,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:59:54,035 INFO L432 NwaCegarLoop]: 3209 mSDtfsCounter, 3389 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3389 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:54,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3389 Valid, 3319 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 04:59:54,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2024-11-09 04:59:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2357. [2024-11-09 04:59:54,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 2199 states have (on average 1.834924965893588) internal successors, (4035), 2205 states have internal predecessors, (4035), 108 states have call successors, (108), 48 states have call predecessors, (108), 48 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-09 04:59:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 4251 transitions. [2024-11-09 04:59:54,117 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 4251 transitions. Word has length 81 [2024-11-09 04:59:54,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:54,118 INFO L471 AbstractCegarLoop]: Abstraction has 2357 states and 4251 transitions. [2024-11-09 04:59:54,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 04:59:54,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 4251 transitions. [2024-11-09 04:59:54,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-09 04:59:54,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:54,123 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:54,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 04:59:54,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:54,323 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:54,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:54,324 INFO L85 PathProgramCache]: Analyzing trace with hash -205542258, now seen corresponding path program 1 times [2024-11-09 04:59:54,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:54,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407867131] [2024-11-09 04:59:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:54,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-09 04:59:54,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:54,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407867131] [2024-11-09 04:59:54,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407867131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:59:54,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:59:54,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:59:54,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529332850] [2024-11-09 04:59:54,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:59:54,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:59:54,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:54,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:59:54,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:59:54,493 INFO L87 Difference]: Start difference. First operand 2357 states and 4251 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 04:59:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:55,230 INFO L93 Difference]: Finished difference Result 2919 states and 5040 transitions. [2024-11-09 04:59:55,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:59:55,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 81 [2024-11-09 04:59:55,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:55,246 INFO L225 Difference]: With dead ends: 2919 [2024-11-09 04:59:55,246 INFO L226 Difference]: Without dead ends: 2553 [2024-11-09 04:59:55,248 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 [2024-11-09 04:59:55,250 INFO L432 NwaCegarLoop]: 3238 mSDtfsCounter, 59 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 6417 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:55,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 6417 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 04:59:55,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2024-11-09 04:59:55,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2481. [2024-11-09 04:59:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2481 states, 2315 states have (on average 1.8207343412526997) internal successors, (4215), 2321 states have internal predecessors, (4215), 112 states have call successors, (112), 52 states have call predecessors, (112), 52 states have return successors, (112), 108 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-09 04:59:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2481 states to 2481 states and 4439 transitions. [2024-11-09 04:59:55,344 INFO L78 Accepts]: Start accepts. Automaton has 2481 states and 4439 transitions. Word has length 81 [2024-11-09 04:59:55,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:55,345 INFO L471 AbstractCegarLoop]: Abstraction has 2481 states and 4439 transitions. [2024-11-09 04:59:55,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 04:59:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2481 states and 4439 transitions. [2024-11-09 04:59:55,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 04:59:55,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:55,348 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:55,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 04:59:55,349 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:55,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:55,349 INFO L85 PathProgramCache]: Analyzing trace with hash -785154266, now seen corresponding path program 1 times [2024-11-09 04:59:55,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:55,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982814207] [2024-11-09 04:59:55,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:55,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:55,435 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-09 04:59:55,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:55,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982814207] [2024-11-09 04:59:55,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982814207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:59:55,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:59:55,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:59:55,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711903646] [2024-11-09 04:59:55,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:59:55,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:59:55,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:55,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:59:55,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:59:55,441 INFO L87 Difference]: Start difference. First operand 2481 states and 4439 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 04:59:55,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:55,956 INFO L93 Difference]: Finished difference Result 4114 states and 6748 transitions. [2024-11-09 04:59:55,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:59:55,957 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), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 108 [2024-11-09 04:59:55,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:55,972 INFO L225 Difference]: With dead ends: 4114 [2024-11-09 04:59:55,975 INFO L226 Difference]: Without dead ends: 3279 [2024-11-09 04:59:55,979 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 [2024-11-09 04:59:55,980 INFO L432 NwaCegarLoop]: 3181 mSDtfsCounter, 3379 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3379 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:55,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3379 Valid, 3291 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:59:55,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2024-11-09 04:59:56,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 3265. [2024-11-09 04:59:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 2947 states have (on average 1.7234475738038684) internal successors, (5079), 2957 states have internal predecessors, (5079), 212 states have call successors, (212), 104 states have call predecessors, (212), 104 states have return successors, (212), 204 states have call predecessors, (212), 212 states have call successors, (212) [2024-11-09 04:59:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 5503 transitions. [2024-11-09 04:59:56,127 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 5503 transitions. Word has length 108 [2024-11-09 04:59:56,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:56,132 INFO L471 AbstractCegarLoop]: Abstraction has 3265 states and 5503 transitions. [2024-11-09 04:59:56,132 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), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 04:59:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 5503 transitions. [2024-11-09 04:59:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 04:59:56,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:56,140 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:56,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 04:59:56,140 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:56,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1229139585, now seen corresponding path program 1 times [2024-11-09 04:59:56,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:56,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418887328] [2024-11-09 04:59:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:56,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-09 04:59:56,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:56,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418887328] [2024-11-09 04:59:56,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418887328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:59:56,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:59:56,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:59:56,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238669164] [2024-11-09 04:59:56,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:59:56,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:59:56,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:56,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:59:56,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:59:56,230 INFO L87 Difference]: Start difference. First operand 3265 states and 5503 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 04:59:56,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:56,806 INFO L93 Difference]: Finished difference Result 6430 states and 9916 transitions. [2024-11-09 04:59:56,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:59:56,806 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), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 108 [2024-11-09 04:59:56,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:56,832 INFO L225 Difference]: With dead ends: 6430 [2024-11-09 04:59:56,833 INFO L226 Difference]: Without dead ends: 4811 [2024-11-09 04:59:56,839 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 [2024-11-09 04:59:56,840 INFO L432 NwaCegarLoop]: 3194 mSDtfsCounter, 3382 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3382 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:56,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3382 Valid, 3304 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:59:56,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4811 states. [2024-11-09 04:59:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4811 to 4785. [2024-11-09 04:59:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4785 states, 4171 states have (on average 1.6128026852073842) internal successors, (6727), 4189 states have internal predecessors, (6727), 404 states have call successors, (404), 208 states have call predecessors, (404), 208 states have return successors, (404), 388 states have call predecessors, (404), 404 states have call successors, (404) [2024-11-09 04:59:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4785 states to 4785 states and 7535 transitions. [2024-11-09 04:59:57,047 INFO L78 Accepts]: Start accepts. Automaton has 4785 states and 7535 transitions. Word has length 108 [2024-11-09 04:59:57,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:57,047 INFO L471 AbstractCegarLoop]: Abstraction has 4785 states and 7535 transitions. [2024-11-09 04:59:57,048 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), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 04:59:57,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4785 states and 7535 transitions. [2024-11-09 04:59:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:59:57,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:57,058 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:57,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 04:59:57,058 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:57,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:57,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1024519085, now seen corresponding path program 1 times [2024-11-09 04:59:57,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:57,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194637171] [2024-11-09 04:59:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:57,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 04:59:57,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:57,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194637171] [2024-11-09 04:59:57,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194637171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:59:57,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73650278] [2024-11-09 04:59:57,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:57,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:57,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:57,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:59:57,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:59:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:57,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:59:57,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 04:59:57,402 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:59:57,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73650278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:59:57,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:59:57,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 04:59:57,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130992144] [2024-11-09 04:59:57,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:59:57,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:59:57,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:57,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:59:57,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:59:57,405 INFO L87 Difference]: Start difference. First operand 4785 states and 7535 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 04:59:58,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:58,082 INFO L93 Difference]: Finished difference Result 7421 states and 11217 transitions. [2024-11-09 04:59:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:59:58,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2024-11-09 04:59:58,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:58,128 INFO L225 Difference]: With dead ends: 7421 [2024-11-09 04:59:58,128 INFO L226 Difference]: Without dead ends: 5803 [2024-11-09 04:59:58,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:59:58,135 INFO L432 NwaCegarLoop]: 3234 mSDtfsCounter, 66 mSDsluCounter, 3178 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 6412 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:58,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 6412 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 04:59:58,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5803 states. [2024-11-09 04:59:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5803 to 5417. [2024-11-09 04:59:58,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5417 states, 4755 states have (on average 1.5997896950578339) internal successors, (7607), 4773 states have internal predecessors, (7607), 428 states have call successors, (428), 232 states have call predecessors, (428), 232 states have return successors, (428), 412 states have call predecessors, (428), 428 states have call successors, (428) [2024-11-09 04:59:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5417 states to 5417 states and 8463 transitions. [2024-11-09 04:59:58,479 INFO L78 Accepts]: Start accepts. Automaton has 5417 states and 8463 transitions. Word has length 123 [2024-11-09 04:59:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:58,480 INFO L471 AbstractCegarLoop]: Abstraction has 5417 states and 8463 transitions. [2024-11-09 04:59:58,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 04:59:58,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5417 states and 8463 transitions. [2024-11-09 04:59:58,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:59:58,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:58,494 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:58,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 04:59:58,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:58,697 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:58,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:58,698 INFO L85 PathProgramCache]: Analyzing trace with hash -821610355, now seen corresponding path program 1 times [2024-11-09 04:59:58,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:59:58,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209428111] [2024-11-09 04:59:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:58,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:59:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 04:59:58,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:59:58,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209428111] [2024-11-09 04:59:58,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209428111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:59:58,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324068702] [2024-11-09 04:59:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:58,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:59:58,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:59:58,840 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:59:58,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 04:59:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:59,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:59:59,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 04:59:59,044 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:59:59,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324068702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:59:59,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:59:59,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 04:59:59,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012786622] [2024-11-09 04:59:59,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:59:59,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:59:59,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:59:59,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:59:59,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:59:59,047 INFO L87 Difference]: Start difference. First operand 5417 states and 8463 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 04:59:59,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:59,765 INFO L93 Difference]: Finished difference Result 8681 states and 13037 transitions. [2024-11-09 04:59:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:59:59,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2024-11-09 04:59:59,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:59,803 INFO L225 Difference]: With dead ends: 8681 [2024-11-09 04:59:59,804 INFO L226 Difference]: Without dead ends: 6753 [2024-11-09 04:59:59,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:59:59,812 INFO L432 NwaCegarLoop]: 3251 mSDtfsCounter, 72 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:59,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 6431 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 04:59:59,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6753 states. [2024-11-09 05:00:00,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6753 to 6311. [2024-11-09 05:00:00,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6311 states, 5577 states have (on average 1.5813161197776582) internal successors, (8819), 5595 states have internal predecessors, (8819), 464 states have call successors, (464), 268 states have call predecessors, (464), 268 states have return successors, (464), 448 states have call predecessors, (464), 464 states have call successors, (464) [2024-11-09 05:00:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6311 states to 6311 states and 9747 transitions. [2024-11-09 05:00:00,105 INFO L78 Accepts]: Start accepts. Automaton has 6311 states and 9747 transitions. Word has length 123 [2024-11-09 05:00:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:00,105 INFO L471 AbstractCegarLoop]: Abstraction has 6311 states and 9747 transitions. [2024-11-09 05:00:00,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:00:00,106 INFO L276 IsEmpty]: Start isEmpty. Operand 6311 states and 9747 transitions. [2024-11-09 05:00:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 05:00:00,121 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:00,121 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:00,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:00:00,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:00,330 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:00,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:00,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1059572581, now seen corresponding path program 1 times [2024-11-09 05:00:00,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:00,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492354043] [2024-11-09 05:00:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:00,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 05:00:00,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:00,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492354043] [2024-11-09 05:00:00,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492354043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:00,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495766536] [2024-11-09 05:00:00,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:00,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:00,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:00,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:00,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:00:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:00,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:00:00,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 05:00:00,649 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:00,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495766536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:00,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:00,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 05:00:00,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932645670] [2024-11-09 05:00:00,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:00,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:00:00,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:00,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:00:00,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:00:00,651 INFO L87 Difference]: Start difference. First operand 6311 states and 9747 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:00:01,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:01,383 INFO L93 Difference]: Finished difference Result 10581 states and 15767 transitions. [2024-11-09 05:00:01,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:00:01,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2024-11-09 05:00:01,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:01,416 INFO L225 Difference]: With dead ends: 10581 [2024-11-09 05:00:01,416 INFO L226 Difference]: Without dead ends: 8170 [2024-11-09 05:00:01,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:00:01,426 INFO L432 NwaCegarLoop]: 3261 mSDtfsCounter, 84 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:01,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 6441 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:00:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8170 states. [2024-11-09 05:00:01,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8170 to 7616. [2024-11-09 05:00:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7616 states, 6774 states have (on average 1.559639799232359) internal successors, (10565), 6792 states have internal predecessors, (10565), 518 states have call successors, (518), 322 states have call predecessors, (518), 322 states have return successors, (518), 502 states have call predecessors, (518), 518 states have call successors, (518) [2024-11-09 05:00:01,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7616 states to 7616 states and 11601 transitions. [2024-11-09 05:00:01,938 INFO L78 Accepts]: Start accepts. Automaton has 7616 states and 11601 transitions. Word has length 123 [2024-11-09 05:00:01,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:01,939 INFO L471 AbstractCegarLoop]: Abstraction has 7616 states and 11601 transitions. [2024-11-09 05:00:01,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:00:01,940 INFO L276 IsEmpty]: Start isEmpty. Operand 7616 states and 11601 transitions. [2024-11-09 05:00:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 05:00:01,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:01,960 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:01,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:00:02,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:02,161 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:02,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:02,162 INFO L85 PathProgramCache]: Analyzing trace with hash 848434636, now seen corresponding path program 1 times [2024-11-09 05:00:02,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:02,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872347706] [2024-11-09 05:00:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:02,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 05:00:02,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:02,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872347706] [2024-11-09 05:00:02,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872347706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:02,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188758576] [2024-11-09 05:00:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:02,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:02,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:02,358 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:02,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:00:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:02,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:00:02,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 05:00:02,566 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:02,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188758576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:02,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:02,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-09 05:00:02,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054363128] [2024-11-09 05:00:02,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:02,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:00:02,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:02,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:00:02,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:00:02,569 INFO L87 Difference]: Start difference. First operand 7616 states and 11601 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:00:03,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:03,507 INFO L93 Difference]: Finished difference Result 13000 states and 19160 transitions. [2024-11-09 05:00:03,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:00:03,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2024-11-09 05:00:03,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:03,552 INFO L225 Difference]: With dead ends: 13000 [2024-11-09 05:00:03,552 INFO L226 Difference]: Without dead ends: 9950 [2024-11-09 05:00:03,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:00:03,563 INFO L432 NwaCegarLoop]: 3256 mSDtfsCounter, 78 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 6436 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:03,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 6436 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:00:03,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9950 states. [2024-11-09 05:00:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9950 to 9452. [2024-11-09 05:00:04,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9452 states, 8448 states have (on average 1.531841856060606) internal successors, (12941), 8466 states have internal predecessors, (12941), 599 states have call successors, (599), 403 states have call predecessors, (599), 403 states have return successors, (599), 583 states have call predecessors, (599), 599 states have call successors, (599) [2024-11-09 05:00:04,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9452 states to 9452 states and 14139 transitions. [2024-11-09 05:00:04,133 INFO L78 Accepts]: Start accepts. Automaton has 9452 states and 14139 transitions. Word has length 123 [2024-11-09 05:00:04,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:04,133 INFO L471 AbstractCegarLoop]: Abstraction has 9452 states and 14139 transitions. [2024-11-09 05:00:04,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:00:04,134 INFO L276 IsEmpty]: Start isEmpty. Operand 9452 states and 14139 transitions. [2024-11-09 05:00:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 05:00:04,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:04,158 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:04,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 05:00:04,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:04,359 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:04,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1303558323, now seen corresponding path program 2 times [2024-11-09 05:00:04,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:04,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723010435] [2024-11-09 05:00:04,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:04,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:00:04,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:04,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723010435] [2024-11-09 05:00:04,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723010435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:04,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958143371] [2024-11-09 05:00:04,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:00:04,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:04,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:04,684 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:04,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:00:04,828 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:00:04,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:00:04,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:00:04,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-09 05:00:04,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:04,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958143371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:04,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:04,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:00:04,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424994026] [2024-11-09 05:00:04,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:04,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:00:04,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:04,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:00:04,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:04,869 INFO L87 Difference]: Start difference. First operand 9452 states and 14139 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:00:05,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:05,780 INFO L93 Difference]: Finished difference Result 14410 states and 21197 transitions. [2024-11-09 05:00:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:00:05,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2024-11-09 05:00:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:05,812 INFO L225 Difference]: With dead ends: 14410 [2024-11-09 05:00:05,812 INFO L226 Difference]: Without dead ends: 9470 [2024-11-09 05:00:05,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:05,822 INFO L432 NwaCegarLoop]: 3262 mSDtfsCounter, 125 mSDsluCounter, 3168 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 6430 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:05,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 6430 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:00:05,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9470 states. [2024-11-09 05:00:06,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9470 to 9322. [2024-11-09 05:00:06,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9322 states, 8318 states have (on average 1.5187545082952634) internal successors, (12633), 8336 states have internal predecessors, (12633), 599 states have call successors, (599), 403 states have call predecessors, (599), 403 states have return successors, (599), 583 states have call predecessors, (599), 599 states have call successors, (599) [2024-11-09 05:00:06,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9322 states to 9322 states and 13831 transitions. [2024-11-09 05:00:06,193 INFO L78 Accepts]: Start accepts. Automaton has 9322 states and 13831 transitions. Word has length 123 [2024-11-09 05:00:06,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:06,193 INFO L471 AbstractCegarLoop]: Abstraction has 9322 states and 13831 transitions. [2024-11-09 05:00:06,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:00:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 9322 states and 13831 transitions. [2024-11-09 05:00:06,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 05:00:06,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:06,211 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:06,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 05:00:06,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:06,411 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:06,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:06,412 INFO L85 PathProgramCache]: Analyzing trace with hash -755532725, now seen corresponding path program 1 times [2024-11-09 05:00:06,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:06,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94289391] [2024-11-09 05:00:06,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:06,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:00:06,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94289391] [2024-11-09 05:00:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94289391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572471762] [2024-11-09 05:00:06,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:06,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:06,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:06,651 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:06,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:00:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:06,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 05:00:06,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-09 05:00:06,844 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:06,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572471762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:06,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:06,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:00:06,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262288405] [2024-11-09 05:00:06,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:06,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:00:06,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:06,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:00:06,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:06,847 INFO L87 Difference]: Start difference. First operand 9322 states and 13831 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:00:07,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:07,500 INFO L93 Difference]: Finished difference Result 14158 states and 20463 transitions. [2024-11-09 05:00:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:00:07,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2024-11-09 05:00:07,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:07,536 INFO L225 Difference]: With dead ends: 14158 [2024-11-09 05:00:07,536 INFO L226 Difference]: Without dead ends: 10036 [2024-11-09 05:00:07,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:07,548 INFO L432 NwaCegarLoop]: 3190 mSDtfsCounter, 3391 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3391 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:07,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3391 Valid, 3219 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:00:07,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10036 states. [2024-11-09 05:00:07,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10036 to 10036. [2024-11-09 05:00:07,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10036 states, 8940 states have (on average 1.4951901565995527) internal successors, (13367), 8958 states have internal predecessors, (13367), 629 states have call successors, (629), 465 states have call predecessors, (629), 465 states have return successors, (629), 613 states have call predecessors, (629), 629 states have call successors, (629) [2024-11-09 05:00:07,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10036 states to 10036 states and 14625 transitions. [2024-11-09 05:00:07,973 INFO L78 Accepts]: Start accepts. Automaton has 10036 states and 14625 transitions. Word has length 123 [2024-11-09 05:00:07,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:07,974 INFO L471 AbstractCegarLoop]: Abstraction has 10036 states and 14625 transitions. [2024-11-09 05:00:07,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:00:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 10036 states and 14625 transitions. [2024-11-09 05:00:07,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 05:00:07,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:07,992 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:08,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 05:00:08,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:08,193 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:08,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:08,197 INFO L85 PathProgramCache]: Analyzing trace with hash -769463204, now seen corresponding path program 2 times [2024-11-09 05:00:08,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:08,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766510326] [2024-11-09 05:00:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:08,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:00:08,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:08,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766510326] [2024-11-09 05:00:08,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766510326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:08,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628925020] [2024-11-09 05:00:08,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:00:08,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:08,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:08,510 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:08,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:00:08,661 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 05:00:08,661 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:00:08,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:00:08,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 05:00:08,960 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:08,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628925020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:08,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:08,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-09 05:00:08,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562807182] [2024-11-09 05:00:08,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:08,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:00:08,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:08,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:00:08,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:00:08,962 INFO L87 Difference]: Start difference. First operand 10036 states and 14625 transitions. Second operand has 6 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 05:00:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:10,323 INFO L93 Difference]: Finished difference Result 15729 states and 22375 transitions. [2024-11-09 05:00:10,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:00:10,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 123 [2024-11-09 05:00:10,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:10,360 INFO L225 Difference]: With dead ends: 15729 [2024-11-09 05:00:10,360 INFO L226 Difference]: Without dead ends: 10546 [2024-11-09 05:00:10,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:00:10,374 INFO L432 NwaCegarLoop]: 3132 mSDtfsCounter, 3508 mSDsluCounter, 6225 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3518 SdHoareTripleChecker+Valid, 9357 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:10,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3518 Valid, 9357 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 05:00:10,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10546 states. [2024-11-09 05:00:10,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10546 to 10398. [2024-11-09 05:00:10,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10398 states, 9258 states have (on average 1.48250162022035) internal successors, (13725), 9276 states have internal predecessors, (13725), 643 states have call successors, (643), 495 states have call predecessors, (643), 495 states have return successors, (643), 627 states have call predecessors, (643), 643 states have call successors, (643) [2024-11-09 05:00:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10398 states to 10398 states and 15011 transitions. [2024-11-09 05:00:10,829 INFO L78 Accepts]: Start accepts. Automaton has 10398 states and 15011 transitions. Word has length 123 [2024-11-09 05:00:10,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:10,830 INFO L471 AbstractCegarLoop]: Abstraction has 10398 states and 15011 transitions. [2024-11-09 05:00:10,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 05:00:10,830 INFO L276 IsEmpty]: Start isEmpty. Operand 10398 states and 15011 transitions. [2024-11-09 05:00:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 05:00:10,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:10,853 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:10,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 05:00:11,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:11,058 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:11,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:11,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1650614441, now seen corresponding path program 2 times [2024-11-09 05:00:11,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:11,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300781585] [2024-11-09 05:00:11,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:11,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:00:11,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:11,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300781585] [2024-11-09 05:00:11,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300781585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:11,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489026904] [2024-11-09 05:00:11,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:00:11,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:11,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:11,275 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:11,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:00:11,405 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:00:11,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:00:11,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:00:11,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 05:00:11,443 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:11,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489026904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:11,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:11,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:00:11,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680060468] [2024-11-09 05:00:11,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:11,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:00:11,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:11,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:00:11,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:11,446 INFO L87 Difference]: Start difference. First operand 10398 states and 15011 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:00:12,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:12,305 INFO L93 Difference]: Finished difference Result 15994 states and 22717 transitions. [2024-11-09 05:00:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:00:12,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2024-11-09 05:00:12,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:12,341 INFO L225 Difference]: With dead ends: 15994 [2024-11-09 05:00:12,342 INFO L226 Difference]: Without dead ends: 10416 [2024-11-09 05:00:12,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:12,355 INFO L432 NwaCegarLoop]: 3272 mSDtfsCounter, 115 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 6438 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:12,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 6438 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:00:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10416 states. [2024-11-09 05:00:12,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10416 to 10268. [2024-11-09 05:00:12,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10268 states, 9128 states have (on average 1.4663672217353199) internal successors, (13385), 9146 states have internal predecessors, (13385), 643 states have call successors, (643), 495 states have call predecessors, (643), 495 states have return successors, (643), 627 states have call predecessors, (643), 643 states have call successors, (643) [2024-11-09 05:00:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10268 states to 10268 states and 14671 transitions. [2024-11-09 05:00:12,912 INFO L78 Accepts]: Start accepts. Automaton has 10268 states and 14671 transitions. Word has length 123 [2024-11-09 05:00:12,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:12,913 INFO L471 AbstractCegarLoop]: Abstraction has 10268 states and 14671 transitions. [2024-11-09 05:00:12,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:00:12,913 INFO L276 IsEmpty]: Start isEmpty. Operand 10268 states and 14671 transitions. [2024-11-09 05:00:12,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 05:00:12,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:12,931 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:12,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 05:00:13,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 05:00:13,131 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:13,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:13,132 INFO L85 PathProgramCache]: Analyzing trace with hash -969295671, now seen corresponding path program 1 times [2024-11-09 05:00:13,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:13,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415533671] [2024-11-09 05:00:13,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:13,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:00:13,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:13,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415533671] [2024-11-09 05:00:13,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415533671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:13,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478041953] [2024-11-09 05:00:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:13,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:13,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:13,324 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:13,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 05:00:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:13,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:00:13,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:13,512 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 05:00:13,512 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:13,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478041953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:13,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:13,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:00:13,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663596788] [2024-11-09 05:00:13,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:13,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:00:13,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:13,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:00:13,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:13,515 INFO L87 Difference]: Start difference. First operand 10268 states and 14671 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:00:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:14,531 INFO L93 Difference]: Finished difference Result 23183 states and 32018 transitions. [2024-11-09 05:00:14,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:00:14,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 123 [2024-11-09 05:00:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:14,584 INFO L225 Difference]: With dead ends: 23183 [2024-11-09 05:00:14,584 INFO L226 Difference]: Without dead ends: 14562 [2024-11-09 05:00:14,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:14,603 INFO L432 NwaCegarLoop]: 3189 mSDtfsCounter, 61 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 6353 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:14,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 6353 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:00:14,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14562 states. [2024-11-09 05:00:15,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14562 to 12085. [2024-11-09 05:00:15,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12085 states, 10779 states have (on average 1.457556359588088) internal successors, (15711), 10798 states have internal predecessors, (15711), 726 states have call successors, (726), 578 states have call predecessors, (726), 578 states have return successors, (726), 709 states have call predecessors, (726), 726 states have call successors, (726) [2024-11-09 05:00:15,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12085 states to 12085 states and 17163 transitions. [2024-11-09 05:00:15,101 INFO L78 Accepts]: Start accepts. Automaton has 12085 states and 17163 transitions. Word has length 123 [2024-11-09 05:00:15,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:15,101 INFO L471 AbstractCegarLoop]: Abstraction has 12085 states and 17163 transitions. [2024-11-09 05:00:15,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-09 05:00:15,102 INFO L276 IsEmpty]: Start isEmpty. Operand 12085 states and 17163 transitions. [2024-11-09 05:00:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 05:00:15,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:15,119 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:15,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 05:00:15,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 05:00:15,324 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:15,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:15,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1184317545, now seen corresponding path program 1 times [2024-11-09 05:00:15,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:15,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382384697] [2024-11-09 05:00:15,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:15,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:15,670 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-09 05:00:15,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:15,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382384697] [2024-11-09 05:00:15,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382384697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:15,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703626509] [2024-11-09 05:00:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:15,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:15,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:15,673 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:15,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 05:00:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:15,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:00:15,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:00:16,082 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:16,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703626509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:16,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:16,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-09 05:00:16,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505984659] [2024-11-09 05:00:16,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:16,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:00:16,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:00:16,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:00:16,085 INFO L87 Difference]: Start difference. First operand 12085 states and 17163 transitions. Second operand has 6 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 05:00:17,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:17,539 INFO L93 Difference]: Finished difference Result 18925 states and 26366 transitions. [2024-11-09 05:00:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:00:17,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 125 [2024-11-09 05:00:17,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:17,583 INFO L225 Difference]: With dead ends: 18925 [2024-11-09 05:00:17,583 INFO L226 Difference]: Without dead ends: 12473 [2024-11-09 05:00:17,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:00:17,598 INFO L432 NwaCegarLoop]: 3132 mSDtfsCounter, 3477 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3487 SdHoareTripleChecker+Valid, 6244 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:17,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3487 Valid, 6244 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:00:17,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12473 states. [2024-11-09 05:00:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12473 to 12441. [2024-11-09 05:00:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12441 states, 11095 states have (on average 1.445245606128887) internal successors, (16035), 11114 states have internal predecessors, (16035), 738 states have call successors, (738), 606 states have call predecessors, (738), 606 states have return successors, (738), 721 states have call predecessors, (738), 738 states have call successors, (738) [2024-11-09 05:00:18,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12441 states to 12441 states and 17511 transitions. [2024-11-09 05:00:18,152 INFO L78 Accepts]: Start accepts. Automaton has 12441 states and 17511 transitions. Word has length 125 [2024-11-09 05:00:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:18,152 INFO L471 AbstractCegarLoop]: Abstraction has 12441 states and 17511 transitions. [2024-11-09 05:00:18,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-09 05:00:18,153 INFO L276 IsEmpty]: Start isEmpty. Operand 12441 states and 17511 transitions. [2024-11-09 05:00:18,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-09 05:00:18,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:18,172 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:18,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 05:00:18,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 05:00:18,372 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:18,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:18,373 INFO L85 PathProgramCache]: Analyzing trace with hash -318223380, now seen corresponding path program 1 times [2024-11-09 05:00:18,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:18,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561094855] [2024-11-09 05:00:18,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:18,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-09 05:00:18,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561094855] [2024-11-09 05:00:18,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561094855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061242256] [2024-11-09 05:00:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:18,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:18,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:18,719 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:18,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 05:00:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:18,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 05:00:18,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 05:00:19,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:19,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061242256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:19,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:19,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-09 05:00:19,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376722483] [2024-11-09 05:00:19,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:19,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:00:19,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:19,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:00:19,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:00:19,008 INFO L87 Difference]: Start difference. First operand 12441 states and 17511 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 05:00:20,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:20,548 INFO L93 Difference]: Finished difference Result 19932 states and 27304 transitions. [2024-11-09 05:00:20,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:00:20,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2024-11-09 05:00:20,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:20,593 INFO L225 Difference]: With dead ends: 19932 [2024-11-09 05:00:20,593 INFO L226 Difference]: Without dead ends: 14474 [2024-11-09 05:00:20,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:00:20,603 INFO L432 NwaCegarLoop]: 3241 mSDtfsCounter, 97 mSDsluCounter, 9512 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 12753 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:20,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 12753 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 05:00:20,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14474 states. [2024-11-09 05:00:21,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14474 to 13560. [2024-11-09 05:00:21,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13560 states, 11988 states have (on average 1.4276776776776776) internal successors, (17115), 12023 states have internal predecessors, (17115), 859 states have call successors, (859), 695 states have call predecessors, (859), 711 states have return successors, (891), 842 states have call predecessors, (891), 859 states have call successors, (891) [2024-11-09 05:00:21,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13560 states to 13560 states and 18865 transitions. [2024-11-09 05:00:21,357 INFO L78 Accepts]: Start accepts. Automaton has 13560 states and 18865 transitions. Word has length 129 [2024-11-09 05:00:21,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:21,358 INFO L471 AbstractCegarLoop]: Abstraction has 13560 states and 18865 transitions. [2024-11-09 05:00:21,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 05:00:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 13560 states and 18865 transitions. [2024-11-09 05:00:21,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-09 05:00:21,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:21,376 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:21,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 05:00:21,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 05:00:21,577 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:21,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:21,578 INFO L85 PathProgramCache]: Analyzing trace with hash -526438935, now seen corresponding path program 1 times [2024-11-09 05:00:21,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:21,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733562084] [2024-11-09 05:00:21,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:21,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 14 proven. 33 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 05:00:21,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:21,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733562084] [2024-11-09 05:00:21,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733562084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:21,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734534180] [2024-11-09 05:00:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:21,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:21,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:21,767 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:21,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 05:00:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:21,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 05:00:21,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:22,024 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:00:22,024 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:22,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734534180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:22,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:22,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-09 05:00:22,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829014371] [2024-11-09 05:00:22,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:22,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:00:22,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:00:22,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:00:22,026 INFO L87 Difference]: Start difference. First operand 13560 states and 18865 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-09 05:00:23,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:23,488 INFO L93 Difference]: Finished difference Result 23694 states and 32254 transitions. [2024-11-09 05:00:23,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:00:23,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 127 [2024-11-09 05:00:23,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:23,532 INFO L225 Difference]: With dead ends: 23694 [2024-11-09 05:00:23,533 INFO L226 Difference]: Without dead ends: 15024 [2024-11-09 05:00:23,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:00:23,543 INFO L432 NwaCegarLoop]: 3255 mSDtfsCounter, 110 mSDsluCounter, 6357 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 9612 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:23,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 9612 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:00:23,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15024 states. [2024-11-09 05:00:24,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15024 to 12820. [2024-11-09 05:00:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12820 states, 11202 states have (on average 1.4190323156579183) internal successors, (15896), 11249 states have internal predecessors, (15896), 890 states have call successors, (890), 694 states have call predecessors, (890), 726 states have return successors, (954), 877 states have call predecessors, (954), 890 states have call successors, (954) [2024-11-09 05:00:24,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12820 states to 12820 states and 17740 transitions. [2024-11-09 05:00:24,328 INFO L78 Accepts]: Start accepts. Automaton has 12820 states and 17740 transitions. Word has length 127 [2024-11-09 05:00:24,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:24,328 INFO L471 AbstractCegarLoop]: Abstraction has 12820 states and 17740 transitions. [2024-11-09 05:00:24,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-09 05:00:24,329 INFO L276 IsEmpty]: Start isEmpty. Operand 12820 states and 17740 transitions. [2024-11-09 05:00:24,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-09 05:00:24,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:24,344 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:24,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 05:00:24,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 05:00:24,544 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:24,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:24,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1520039288, now seen corresponding path program 1 times [2024-11-09 05:00:24,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:24,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628938546] [2024-11-09 05:00:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:24,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 14 proven. 46 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-09 05:00:24,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:24,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628938546] [2024-11-09 05:00:24,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628938546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:24,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886352460] [2024-11-09 05:00:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:24,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:24,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:24,794 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:24,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 05:00:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:24,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:00:24,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-09 05:00:25,044 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:25,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886352460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:25,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:25,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:00:25,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793721105] [2024-11-09 05:00:25,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:25,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:00:25,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:25,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:00:25,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:25,047 INFO L87 Difference]: Start difference. First operand 12820 states and 17740 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:00:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:25,965 INFO L93 Difference]: Finished difference Result 22718 states and 30687 transitions. [2024-11-09 05:00:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:00:25,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 159 [2024-11-09 05:00:25,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:26,005 INFO L225 Difference]: With dead ends: 22718 [2024-11-09 05:00:26,006 INFO L226 Difference]: Without dead ends: 13908 [2024-11-09 05:00:26,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:26,023 INFO L432 NwaCegarLoop]: 3193 mSDtfsCounter, 3360 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3360 SdHoareTripleChecker+Valid, 3227 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:26,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3360 Valid, 3227 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:00:26,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13908 states. [2024-11-09 05:00:26,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13908 to 13812. [2024-11-09 05:00:26,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13812 states, 12122 states have (on average 1.3882197657152284) internal successors, (16828), 12169 states have internal predecessors, (16828), 902 states have call successors, (902), 754 states have call predecessors, (902), 786 states have return successors, (1022), 889 states have call predecessors, (1022), 902 states have call successors, (1022) [2024-11-09 05:00:26,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13812 states to 13812 states and 18752 transitions. [2024-11-09 05:00:26,888 INFO L78 Accepts]: Start accepts. Automaton has 13812 states and 18752 transitions. Word has length 159 [2024-11-09 05:00:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:26,889 INFO L471 AbstractCegarLoop]: Abstraction has 13812 states and 18752 transitions. [2024-11-09 05:00:26,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-09 05:00:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand 13812 states and 18752 transitions. [2024-11-09 05:00:26,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-09 05:00:26,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:26,906 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:26,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 05:00:27,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:27,106 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:27,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:27,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2028529861, now seen corresponding path program 1 times [2024-11-09 05:00:27,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:27,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435392999] [2024-11-09 05:00:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:27,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 49 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-09 05:00:27,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:27,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435392999] [2024-11-09 05:00:27,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435392999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:27,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507417041] [2024-11-09 05:00:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:27,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:27,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:27,299 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:27,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 05:00:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:27,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:00:27,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-09 05:00:27,518 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:27,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507417041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:27,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:27,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:00:27,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571910977] [2024-11-09 05:00:27,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:27,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:00:27,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:27,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:00:27,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:27,521 INFO L87 Difference]: Start difference. First operand 13812 states and 18752 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-09 05:00:28,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:28,480 INFO L93 Difference]: Finished difference Result 23188 states and 31109 transitions. [2024-11-09 05:00:28,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:00:28,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 159 [2024-11-09 05:00:28,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:28,516 INFO L225 Difference]: With dead ends: 23188 [2024-11-09 05:00:28,516 INFO L226 Difference]: Without dead ends: 13702 [2024-11-09 05:00:28,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:28,534 INFO L432 NwaCegarLoop]: 3267 mSDtfsCounter, 102 mSDsluCounter, 3155 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 6422 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:28,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 6422 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:00:28,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13702 states. [2024-11-09 05:00:29,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13702 to 13516. [2024-11-09 05:00:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13516 states, 11826 states have (on average 1.366987992558769) internal successors, (16166), 11873 states have internal predecessors, (16166), 902 states have call successors, (902), 754 states have call predecessors, (902), 786 states have return successors, (1022), 889 states have call predecessors, (1022), 902 states have call successors, (1022) [2024-11-09 05:00:29,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13516 states to 13516 states and 18090 transitions. [2024-11-09 05:00:29,585 INFO L78 Accepts]: Start accepts. Automaton has 13516 states and 18090 transitions. Word has length 159 [2024-11-09 05:00:29,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:29,586 INFO L471 AbstractCegarLoop]: Abstraction has 13516 states and 18090 transitions. [2024-11-09 05:00:29,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-09 05:00:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 13516 states and 18090 transitions. [2024-11-09 05:00:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-09 05:00:29,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:29,600 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:29,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 05:00:29,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:29,804 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:29,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:29,805 INFO L85 PathProgramCache]: Analyzing trace with hash 511519675, now seen corresponding path program 1 times [2024-11-09 05:00:29,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:29,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114181513] [2024-11-09 05:00:29,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:29,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:30,018 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 14 proven. 49 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-09 05:00:30,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:30,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114181513] [2024-11-09 05:00:30,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114181513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:30,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178214773] [2024-11-09 05:00:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:30,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:30,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:30,022 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:30,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 05:00:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:30,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 05:00:30,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-09 05:00:30,310 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:30,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178214773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:30,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:30,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-09 05:00:30,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574285027] [2024-11-09 05:00:30,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:30,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:00:30,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:30,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:00:30,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:00:30,316 INFO L87 Difference]: Start difference. First operand 13516 states and 18090 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-09 05:00:31,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:31,925 INFO L93 Difference]: Finished difference Result 28089 states and 36316 transitions. [2024-11-09 05:00:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:00:31,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 162 [2024-11-09 05:00:31,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:31,959 INFO L225 Difference]: With dead ends: 28089 [2024-11-09 05:00:31,960 INFO L226 Difference]: Without dead ends: 18975 [2024-11-09 05:00:31,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:00:31,970 INFO L432 NwaCegarLoop]: 3250 mSDtfsCounter, 105 mSDsluCounter, 6359 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 9609 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:31,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 9609 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:00:31,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18975 states. [2024-11-09 05:00:33,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18975 to 16904. [2024-11-09 05:00:33,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16904 states, 14566 states have (on average 1.3222573115474392) internal successors, (19260), 14605 states have internal predecessors, (19260), 1286 states have call successors, (1286), 1042 states have call predecessors, (1286), 1050 states have return successors, (1494), 1257 states have call predecessors, (1494), 1286 states have call successors, (1494) [2024-11-09 05:00:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16904 states to 16904 states and 22040 transitions. [2024-11-09 05:00:33,066 INFO L78 Accepts]: Start accepts. Automaton has 16904 states and 22040 transitions. Word has length 162 [2024-11-09 05:00:33,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:33,067 INFO L471 AbstractCegarLoop]: Abstraction has 16904 states and 22040 transitions. [2024-11-09 05:00:33,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 4 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-09 05:00:33,067 INFO L276 IsEmpty]: Start isEmpty. Operand 16904 states and 22040 transitions. [2024-11-09 05:00:33,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-09 05:00:33,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:33,086 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:33,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 05:00:33,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-09 05:00:33,287 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:33,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:33,287 INFO L85 PathProgramCache]: Analyzing trace with hash -581042137, now seen corresponding path program 1 times [2024-11-09 05:00:33,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:33,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944590589] [2024-11-09 05:00:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:33,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:33,511 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 14 proven. 61 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-09 05:00:33,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:33,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944590589] [2024-11-09 05:00:33,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944590589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:33,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419737784] [2024-11-09 05:00:33,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:33,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:33,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:33,514 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:33,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 05:00:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:33,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 05:00:33,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-09 05:00:33,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:33,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419737784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:33,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:33,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:00:33,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946065292] [2024-11-09 05:00:33,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:33,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:00:33,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:33,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:00:33,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:33,793 INFO L87 Difference]: Start difference. First operand 16904 states and 22040 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-09 05:00:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:35,125 INFO L93 Difference]: Finished difference Result 27540 states and 35451 transitions. [2024-11-09 05:00:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:00:35,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 195 [2024-11-09 05:00:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:35,171 INFO L225 Difference]: With dead ends: 27540 [2024-11-09 05:00:35,171 INFO L226 Difference]: Without dead ends: 18784 [2024-11-09 05:00:35,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:35,187 INFO L432 NwaCegarLoop]: 3194 mSDtfsCounter, 3359 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:35,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3359 Valid, 3228 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 05:00:35,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18784 states. [2024-11-09 05:00:36,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18784 to 18676. [2024-11-09 05:00:36,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18676 states, 16226 states have (on average 1.2902748674966105) internal successors, (20936), 16281 states have internal predecessors, (20936), 1286 states have call successors, (1286), 1122 states have call predecessors, (1286), 1162 states have return successors, (1602), 1273 states have call predecessors, (1602), 1286 states have call successors, (1602) [2024-11-09 05:00:36,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18676 states to 18676 states and 23824 transitions. [2024-11-09 05:00:36,449 INFO L78 Accepts]: Start accepts. Automaton has 18676 states and 23824 transitions. Word has length 195 [2024-11-09 05:00:36,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:36,450 INFO L471 AbstractCegarLoop]: Abstraction has 18676 states and 23824 transitions. [2024-11-09 05:00:36,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-09 05:00:36,450 INFO L276 IsEmpty]: Start isEmpty. Operand 18676 states and 23824 transitions. [2024-11-09 05:00:36,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-09 05:00:36,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:36,466 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:36,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 05:00:36,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-09 05:00:36,667 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:36,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:36,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1574508293, now seen corresponding path program 1 times [2024-11-09 05:00:36,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:36,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665460198] [2024-11-09 05:00:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:36,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 14 proven. 65 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-09 05:00:36,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:36,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665460198] [2024-11-09 05:00:36,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665460198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:36,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329800165] [2024-11-09 05:00:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:36,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:36,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:36,905 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:36,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 05:00:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:37,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:00:37,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-09 05:00:37,151 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:37,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329800165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:37,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:37,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 05:00:37,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614415568] [2024-11-09 05:00:37,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:37,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:00:37,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:37,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:00:37,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:37,154 INFO L87 Difference]: Start difference. First operand 18676 states and 23824 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-09 05:00:38,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:38,524 INFO L93 Difference]: Finished difference Result 28676 states and 36570 transitions. [2024-11-09 05:00:38,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:00:38,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 195 [2024-11-09 05:00:38,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:38,562 INFO L225 Difference]: With dead ends: 28676 [2024-11-09 05:00:38,562 INFO L226 Difference]: Without dead ends: 18658 [2024-11-09 05:00:38,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:38,578 INFO L432 NwaCegarLoop]: 3265 mSDtfsCounter, 100 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:38,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 6431 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:00:38,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18658 states. [2024-11-09 05:00:39,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18658 to 18504. [2024-11-09 05:00:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18504 states, 16054 states have (on average 1.2692163946679955) internal successors, (20376), 16109 states have internal predecessors, (20376), 1286 states have call successors, (1286), 1122 states have call predecessors, (1286), 1162 states have return successors, (1602), 1273 states have call predecessors, (1602), 1286 states have call successors, (1602) [2024-11-09 05:00:39,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18504 states to 18504 states and 23264 transitions. [2024-11-09 05:00:39,733 INFO L78 Accepts]: Start accepts. Automaton has 18504 states and 23264 transitions. Word has length 195 [2024-11-09 05:00:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:39,734 INFO L471 AbstractCegarLoop]: Abstraction has 18504 states and 23264 transitions. [2024-11-09 05:00:39,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-09 05:00:39,734 INFO L276 IsEmpty]: Start isEmpty. Operand 18504 states and 23264 transitions. [2024-11-09 05:00:39,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-09 05:00:39,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:39,754 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:39,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 05:00:39,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-09 05:00:39,954 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:39,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:39,955 INFO L85 PathProgramCache]: Analyzing trace with hash -194614871, now seen corresponding path program 1 times [2024-11-09 05:00:39,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:39,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253009656] [2024-11-09 05:00:39,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:39,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:40,251 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 14 proven. 65 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2024-11-09 05:00:40,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:40,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253009656] [2024-11-09 05:00:40,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253009656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:40,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245152993] [2024-11-09 05:00:40,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:40,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:40,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:40,255 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:40,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 05:00:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:40,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 05:00:40,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-09 05:00:40,565 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:40,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245152993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:40,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:40,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-09 05:00:40,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293000355] [2024-11-09 05:00:40,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:40,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:00:40,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:40,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:00:40,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:00:40,568 INFO L87 Difference]: Start difference. First operand 18504 states and 23264 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-09 05:00:42,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:42,715 INFO L93 Difference]: Finished difference Result 34733 states and 42621 transitions. [2024-11-09 05:00:42,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:00:42,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 199 [2024-11-09 05:00:42,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:42,782 INFO L225 Difference]: With dead ends: 34733 [2024-11-09 05:00:42,782 INFO L226 Difference]: Without dead ends: 24999 [2024-11-09 05:00:42,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:00:42,932 INFO L432 NwaCegarLoop]: 3247 mSDtfsCounter, 102 mSDsluCounter, 6363 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 9610 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:42,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 9610 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 05:00:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24999 states. [2024-11-09 05:00:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24999 to 23356. [2024-11-09 05:00:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23356 states, 20070 states have (on average 1.2326856003986049) internal successors, (24740), 20123 states have internal predecessors, (24740), 1750 states have call successors, (1750), 1506 states have call predecessors, (1750), 1534 states have return successors, (2254), 1727 states have call predecessors, (2254), 1750 states have call successors, (2254) [2024-11-09 05:00:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23356 states to 23356 states and 28744 transitions. [2024-11-09 05:00:44,187 INFO L78 Accepts]: Start accepts. Automaton has 23356 states and 28744 transitions. Word has length 199 [2024-11-09 05:00:44,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:44,187 INFO L471 AbstractCegarLoop]: Abstraction has 23356 states and 28744 transitions. [2024-11-09 05:00:44,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 4 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-09 05:00:44,187 INFO L276 IsEmpty]: Start isEmpty. Operand 23356 states and 28744 transitions. [2024-11-09 05:00:44,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-09 05:00:44,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:44,206 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:44,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 05:00:44,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 05:00:44,406 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:44,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:44,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1945211684, now seen corresponding path program 1 times [2024-11-09 05:00:44,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:44,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363356094] [2024-11-09 05:00:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:44,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 18 proven. 102 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-09 05:00:44,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:44,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363356094] [2024-11-09 05:00:44,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363356094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:00:44,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851370327] [2024-11-09 05:00:44,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:44,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:00:44,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:00:44,844 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:00:44,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 05:00:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:45,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 05:00:45,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-09 05:00:45,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:45,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851370327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:45,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:00:45,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-09 05:00:45,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250679350] [2024-11-09 05:00:45,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:45,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:00:45,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:45,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:00:45,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-09 05:00:45,356 INFO L87 Difference]: Start difference. First operand 23356 states and 28744 transitions. Second operand has 6 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:00:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:47,673 INFO L93 Difference]: Finished difference Result 36827 states and 44528 transitions. [2024-11-09 05:00:47,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:00:47,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 207 [2024-11-09 05:00:47,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:47,722 INFO L225 Difference]: With dead ends: 36827 [2024-11-09 05:00:47,723 INFO L226 Difference]: Without dead ends: 18903 [2024-11-09 05:00:47,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:00:47,746 INFO L432 NwaCegarLoop]: 3132 mSDtfsCounter, 3471 mSDsluCounter, 9334 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3479 SdHoareTripleChecker+Valid, 12466 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:47,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3479 Valid, 12466 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 05:00:47,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18903 states. [2024-11-09 05:00:49,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18903 to 18205. [2024-11-09 05:00:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18205 states, 15587 states have (on average 1.2484121383203952) internal successors, (19459), 15654 states have internal predecessors, (19459), 1392 states have call successors, (1392), 1160 states have call predecessors, (1392), 1224 states have return successors, (1696), 1391 states have call predecessors, (1696), 1392 states have call successors, (1696) [2024-11-09 05:00:49,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18205 states to 18205 states and 22547 transitions. [2024-11-09 05:00:49,254 INFO L78 Accepts]: Start accepts. Automaton has 18205 states and 22547 transitions. Word has length 207 [2024-11-09 05:00:49,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:49,255 INFO L471 AbstractCegarLoop]: Abstraction has 18205 states and 22547 transitions. [2024-11-09 05:00:49,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-09 05:00:49,255 INFO L276 IsEmpty]: Start isEmpty. Operand 18205 states and 22547 transitions. [2024-11-09 05:00:49,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-09 05:00:49,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:49,267 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:49,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 05:00:49,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 05:00:49,468 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:49,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:49,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1582421069, now seen corresponding path program 1 times [2024-11-09 05:00:49,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:00:49,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517767889] [2024-11-09 05:00:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:49,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:00:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-11-09 05:00:49,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:00:49,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517767889] [2024-11-09 05:00:49,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517767889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:49,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:00:49,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 05:00:49,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466355651] [2024-11-09 05:00:49,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:49,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 05:00:49,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:00:49,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 05:00:49,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:49,810 INFO L87 Difference]: Start difference. First operand 18205 states and 22547 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-09 05:00:57,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:57,634 INFO L93 Difference]: Finished difference Result 81140 states and 96565 transitions. [2024-11-09 05:00:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:00:57,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 237 [2024-11-09 05:00:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:57,898 INFO L225 Difference]: With dead ends: 81140 [2024-11-09 05:00:57,899 INFO L226 Difference]: Without dead ends: 75352 [2024-11-09 05:00:57,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:00:57,922 INFO L432 NwaCegarLoop]: 3581 mSDtfsCounter, 3837 mSDsluCounter, 13799 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3837 SdHoareTripleChecker+Valid, 17380 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:57,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3837 Valid, 17380 Invalid, 2174 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 2157 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 05:00:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75352 states. [2024-11-09 05:01:02,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75352 to 49334. [2024-11-09 05:01:02,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49334 states, 41751 states have (on average 1.204450192809753) internal successors, (50287), 41948 states have internal predecessors, (50287), 4036 states have call successors, (4036), 3326 states have call predecessors, (4036), 3545 states have return successors, (4956), 4060 states have call predecessors, (4956), 4036 states have call successors, (4956) [2024-11-09 05:01:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49334 states to 49334 states and 59279 transitions. [2024-11-09 05:01:03,019 INFO L78 Accepts]: Start accepts. Automaton has 49334 states and 59279 transitions. Word has length 237 [2024-11-09 05:01:03,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:03,020 INFO L471 AbstractCegarLoop]: Abstraction has 49334 states and 59279 transitions. [2024-11-09 05:01:03,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-09 05:01:03,020 INFO L276 IsEmpty]: Start isEmpty. Operand 49334 states and 59279 transitions. [2024-11-09 05:01:03,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-09 05:01:03,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:03,055 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:01:03,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 05:01:03,055 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:03,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:03,056 INFO L85 PathProgramCache]: Analyzing trace with hash -181317289, now seen corresponding path program 1 times [2024-11-09 05:01:03,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:03,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345893960] [2024-11-09 05:01:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:03,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:03,642 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 18 proven. 137 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-09 05:01:03,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:03,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345893960] [2024-11-09 05:01:03,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345893960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:01:03,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637535283] [2024-11-09 05:01:03,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:03,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:01:03,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:01:03,650 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:01:03,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 05:01:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:03,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 05:01:03,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:01:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-09 05:01:04,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:01:04,812 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 68 proven. 44 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-09 05:01:04,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637535283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:01:04,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [53443451] [2024-11-09 05:01:04,843 INFO L159 IcfgInterpreter]: Started Sifa with 94 locations of interest [2024-11-09 05:01:04,843 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:01:04,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:01:04,852 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:01:04,852 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:01:24,790 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 160 for LOIs [2024-11-09 05:01:24,875 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 151 for LOIs [2024-11-09 05:01:25,001 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2024-11-09 05:01:25,003 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2024-11-09 05:01:25,013 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 1 for LOIs [2024-11-09 05:01:25,054 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 1 for LOIs [2024-11-09 05:01:25,221 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:01:35,845 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '997291#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1) (exists ((|v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_19| Int)) (and (not (= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_19| 0)) (<= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_19| 2147483647) (<= 0 (+ |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_19| 2147483648)))))' at error location [2024-11-09 05:01:35,845 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:01:35,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:01:35,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 12] total 21 [2024-11-09 05:01:35,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801580778] [2024-11-09 05:01:35,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:01:35,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 05:01:35,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:35,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 05:01:35,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=6441, Unknown=0, NotChecked=0, Total=6806 [2024-11-09 05:01:35,849 INFO L87 Difference]: Start difference. First operand 49334 states and 59279 transitions. Second operand has 21 states, 15 states have (on average 16.866666666666667) internal successors, (253), 17 states have internal predecessors, (253), 11 states have call successors, (46), 8 states have call predecessors, (46), 12 states have return successors, (47), 11 states have call predecessors, (47), 11 states have call successors, (47) [2024-11-09 05:01:45,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:45,567 INFO L93 Difference]: Finished difference Result 96440 states and 114217 transitions. [2024-11-09 05:01:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 05:01:45,567 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 15 states have (on average 16.866666666666667) internal successors, (253), 17 states have internal predecessors, (253), 11 states have call successors, (46), 8 states have call predecessors, (46), 12 states have return successors, (47), 11 states have call predecessors, (47), 11 states have call successors, (47) Word has length 244 [2024-11-09 05:01:45,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:45,672 INFO L225 Difference]: With dead ends: 96440 [2024-11-09 05:01:45,672 INFO L226 Difference]: Without dead ends: 48753 [2024-11-09 05:01:45,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 641 SyntacticMatches, 35 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4108 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=1129, Invalid=12913, Unknown=0, NotChecked=0, Total=14042 [2024-11-09 05:01:45,722 INFO L432 NwaCegarLoop]: 3149 mSDtfsCounter, 11576 mSDsluCounter, 25028 mSDsCounter, 0 mSdLazyCounter, 3378 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11576 SdHoareTripleChecker+Valid, 28177 SdHoareTripleChecker+Invalid, 3826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 3378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:45,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11576 Valid, 28177 Invalid, 3826 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [448 Valid, 3378 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-09 05:01:45,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48753 states. [2024-11-09 05:01:49,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48753 to 37966. [2024-11-09 05:01:49,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37966 states, 31816 states have (on average 1.197699270807141) internal successors, (38106), 32051 states have internal predecessors, (38106), 3375 states have call successors, (3375), 2617 states have call predecessors, (3375), 2773 states have return successors, (3619), 3298 states have call predecessors, (3619), 3375 states have call successors, (3619) [2024-11-09 05:01:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37966 states to 37966 states and 45100 transitions. [2024-11-09 05:01:49,703 INFO L78 Accepts]: Start accepts. Automaton has 37966 states and 45100 transitions. Word has length 244 [2024-11-09 05:01:49,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:49,704 INFO L471 AbstractCegarLoop]: Abstraction has 37966 states and 45100 transitions. [2024-11-09 05:01:49,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 15 states have (on average 16.866666666666667) internal successors, (253), 17 states have internal predecessors, (253), 11 states have call successors, (46), 8 states have call predecessors, (46), 12 states have return successors, (47), 11 states have call predecessors, (47), 11 states have call successors, (47) [2024-11-09 05:01:49,704 INFO L276 IsEmpty]: Start isEmpty. Operand 37966 states and 45100 transitions. [2024-11-09 05:01:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-09 05:01:49,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:49,731 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:01:49,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-09 05:01:49,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-09 05:01:49,932 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:49,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:49,933 INFO L85 PathProgramCache]: Analyzing trace with hash 758673247, now seen corresponding path program 1 times [2024-11-09 05:01:49,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:01:49,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578025244] [2024-11-09 05:01:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:49,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:01:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 42 proven. 96 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2024-11-09 05:01:50,228 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:01:50,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578025244] [2024-11-09 05:01:50,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578025244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:01:50,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352611538] [2024-11-09 05:01:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:50,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:01:50,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:01:50,234 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:01:50,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 05:01:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:50,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:01:50,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:01:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-09 05:01:50,543 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:01:50,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352611538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:50,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:01:50,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-09 05:01:50,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989163512] [2024-11-09 05:01:50,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:50,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:01:50,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:01:50,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:01:50,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:01:50,545 INFO L87 Difference]: Start difference. First operand 37966 states and 45100 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-09 05:01:55,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:55,432 INFO L93 Difference]: Finished difference Result 79809 states and 93246 transitions. [2024-11-09 05:01:55,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:01:55,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 276 [2024-11-09 05:01:55,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:55,537 INFO L225 Difference]: With dead ends: 79809 [2024-11-09 05:01:55,537 INFO L226 Difference]: Without dead ends: 43490 [2024-11-09 05:01:55,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 05:01:55,576 INFO L432 NwaCegarLoop]: 3270 mSDtfsCounter, 3377 mSDsluCounter, 3381 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3377 SdHoareTripleChecker+Valid, 6651 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:55,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3377 Valid, 6651 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:01:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43490 states. [2024-11-09 05:02:00,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43490 to 42817. [2024-11-09 05:02:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42817 states, 35867 states have (on average 1.1823403128223715) internal successors, (42407), 36123 states have internal predecessors, (42407), 3815 states have call successors, (3815), 2977 states have call predecessors, (3815), 3133 states have return successors, (4059), 3717 states have call predecessors, (4059), 3815 states have call successors, (4059) [2024-11-09 05:02:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42817 states to 42817 states and 50281 transitions. [2024-11-09 05:02:00,280 INFO L78 Accepts]: Start accepts. Automaton has 42817 states and 50281 transitions. Word has length 276 [2024-11-09 05:02:00,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:00,280 INFO L471 AbstractCegarLoop]: Abstraction has 42817 states and 50281 transitions. [2024-11-09 05:02:00,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-09 05:02:00,281 INFO L276 IsEmpty]: Start isEmpty. Operand 42817 states and 50281 transitions. [2024-11-09 05:02:00,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-09 05:02:00,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:00,314 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:00,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-09 05:02:00,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:00,516 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:02:00,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:00,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1862105957, now seen corresponding path program 1 times [2024-11-09 05:02:00,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:02:00,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807896586] [2024-11-09 05:02:00,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:00,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:02:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 44 proven. 96 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2024-11-09 05:02:00,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:02:00,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807896586] [2024-11-09 05:02:00,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807896586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:02:00,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863132888] [2024-11-09 05:02:00,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:00,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:00,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:02:00,810 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:02:00,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4aa3dfb-a2ee-4245-b0df-75f333b4898a/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 05:02:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:01,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 05:02:01,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-11-09 05:02:01,065 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:02:01,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863132888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:01,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:02:01,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-09 05:02:01,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943218685] [2024-11-09 05:02:01,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:01,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:02:01,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:02:01,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:02:01,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:02:01,068 INFO L87 Difference]: Start difference. First operand 42817 states and 50281 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15)