./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh --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 7640909f7ef47a12c6daa58dacf29a693ba9f7401fa2c48138a16311fc07e97d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:43:37,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:43:37,686 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 18:43:37,692 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:43:37,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:43:37,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:43:37,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:43:37,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:43:37,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:43:37,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:43:37,724 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:43:37,724 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:43:37,725 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:43:37,725 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:43:37,726 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:43:37,726 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:43:37,727 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:43:37,727 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:43:37,728 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:43:37,728 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:43:37,729 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:43:37,730 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:43:37,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:43:37,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:43:37,731 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:43:37,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:43:37,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:43:37,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:43:37,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:43:37,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:43:37,734 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:43:37,735 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:43:37,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:43:37,735 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:43:37,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:43:37,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:43:37,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:43:37,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:43:37,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:43:37,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:43:37,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:43:37,738 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:43:37,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:43:37,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:43:37,738 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:43:37,738 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:43:37,739 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:43:37,739 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_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7640909f7ef47a12c6daa58dacf29a693ba9f7401fa2c48138a16311fc07e97d [2023-12-02 18:43:37,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:43:38,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:43:38,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:43:38,011 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:43:38,012 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:43:38,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c [2023-12-02 18:43:40,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:43:41,400 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:43:41,400 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c [2023-12-02 18:43:41,437 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/data/7fc0b6fc8/37d37f52c4ae41d4b959b37e0e15de09/FLAG27f973a5f [2023-12-02 18:43:41,450 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/data/7fc0b6fc8/37d37f52c4ae41d4b959b37e0e15de09 [2023-12-02 18:43:41,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:43:41,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:43:41,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:43:41,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:43:41,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:43:41,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:43:41" (1/1) ... [2023-12-02 18:43:41,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d055ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:41, skipping insertion in model container [2023-12-02 18:43:41,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:43:41" (1/1) ... [2023-12-02 18:43:41,658 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:43:43,536 WARN L240 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_1168d39c-2529-48fe-8a33-742ba29121fd/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c[382357,382370] [2023-12-02 18:43:43,562 WARN L240 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_1168d39c-2529-48fe-8a33-742ba29121fd/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c[383339,383352] [2023-12-02 18:43:43,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:43:43,787 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:43:44,818 WARN L240 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_1168d39c-2529-48fe-8a33-742ba29121fd/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c[382357,382370] [2023-12-02 18:43:44,820 WARN L240 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_1168d39c-2529-48fe-8a33-742ba29121fd/sv-benchmarks/c/combinations/Problem05_label46+token_ring.04.cil-2.c[383339,383352] [2023-12-02 18:43:44,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:43:44,891 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:43:44,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:44 WrapperNode [2023-12-02 18:43:44,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:43:44,892 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:43:44,892 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:43:44,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:43:44,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:44" (1/1) ... [2023-12-02 18:43:44,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:44" (1/1) ... [2023-12-02 18:43:45,388 INFO L138 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12754 [2023-12-02 18:43:45,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:43:45,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:43:45,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:43:45,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:43:45,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:44" (1/1) ... [2023-12-02 18:43:45,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:44" (1/1) ... [2023-12-02 18:43:45,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:44" (1/1) ... [2023-12-02 18:43:45,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:44" (1/1) ... [2023-12-02 18:43:45,604 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:44" (1/1) ... [2023-12-02 18:43:45,667 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:44" (1/1) ... [2023-12-02 18:43:45,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:44" (1/1) ... [2023-12-02 18:43:45,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:44" (1/1) ... [2023-12-02 18:43:45,781 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:43:45,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:43:45,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:43:45,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:43:45,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:44" (1/1) ... [2023-12-02 18:43:45,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:43:45,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:43:45,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:43:45,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:43:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:43:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-12-02 18:43:45,882 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-12-02 18:43:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-12-02 18:43:45,883 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-12-02 18:43:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-12-02 18:43:45,884 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-12-02 18:43:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-12-02 18:43:45,885 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-12-02 18:43:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-12-02 18:43:45,885 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-12-02 18:43:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-12-02 18:43:45,886 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-12-02 18:43:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-12-02 18:43:45,887 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-12-02 18:43:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:43:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:43:45,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:43:46,005 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:43:46,007 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:43:53,827 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:43:55,884 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:43:55,884 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-12-02 18:43:55,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:43:55 BoogieIcfgContainer [2023-12-02 18:43:55,887 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:43:55,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:43:55,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:43:55,894 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:43:55,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:43:41" (1/3) ... [2023-12-02 18:43:55,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc60996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:43:55, skipping insertion in model container [2023-12-02 18:43:55,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:43:44" (2/3) ... [2023-12-02 18:43:55,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc60996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:43:55, skipping insertion in model container [2023-12-02 18:43:55,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:43:55" (3/3) ... [2023-12-02 18:43:55,897 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.04.cil-2.c [2023-12-02 18:43:55,917 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:43:55,918 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 18:43:56,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:43:56,018 INFO L357 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, mHoare=true, 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;@2560f439, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:43:56,018 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 18:43:56,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 1754 states, 1724 states have (on average 1.9698375870069607) internal successors, (3396), 1729 states have internal predecessors, (3396), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 18:43:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 18:43:56,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:43:56,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:43:56,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:43:56,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:43:56,051 INFO L85 PathProgramCache]: Analyzing trace with hash -493275283, now seen corresponding path program 1 times [2023-12-02 18:43:56,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:43:56,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728857667] [2023-12-02 18:43:56,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:43:56,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:43:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:43:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:43:56,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:43:56,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728857667] [2023-12-02 18:43:56,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728857667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:43:56,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:43:56,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:43:56,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338067428] [2023-12-02 18:43:56,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:43:56,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:43:56,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:43:56,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:43:56,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:43:56,465 INFO L87 Difference]: Start difference. First operand has 1754 states, 1724 states have (on average 1.9698375870069607) internal successors, (3396), 1729 states have internal predecessors, (3396), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 18:43:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:43:57,352 INFO L93 Difference]: Finished difference Result 3595 states and 7014 transitions. [2023-12-02 18:43:57,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:43:57,355 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2023-12-02 18:43:57,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:43:57,383 INFO L225 Difference]: With dead ends: 3595 [2023-12-02 18:43:57,383 INFO L226 Difference]: Without dead ends: 1840 [2023-12-02 18:43:57,392 INFO L412 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 [2023-12-02 18:43:57,395 INFO L413 NwaCegarLoop]: 3288 mSDtfsCounter, 3533 mSDsluCounter, 3220 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 6508 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:43:57,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 6508 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 18:43:57,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2023-12-02 18:43:57,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1839. [2023-12-02 18:43:57,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1791 states have (on average 1.9430485762144054) internal successors, (3480), 1795 states have internal predecessors, (3480), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-02 18:43:57,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 3546 transitions. [2023-12-02 18:43:57,538 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 3546 transitions. Word has length 44 [2023-12-02 18:43:57,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:43:57,538 INFO L495 AbstractCegarLoop]: Abstraction has 1839 states and 3546 transitions. [2023-12-02 18:43:57,539 INFO L496 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, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 18:43:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 3546 transitions. [2023-12-02 18:43:57,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 18:43:57,545 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:43:57,546 INFO L195 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, 1] [2023-12-02 18:43:57,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:43:57,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:43:57,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:43:57,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1775397402, now seen corresponding path program 1 times [2023-12-02 18:43:57,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:43:57,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534918641] [2023-12-02 18:43:57,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:43:57,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:43:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:43:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 18:43:57,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:43:57,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534918641] [2023-12-02 18:43:57,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534918641] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:43:57,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893761067] [2023-12-02 18:43:57,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:43:57,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:43:57,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:43:57,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:43:57,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:43:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:43:57,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:43:57,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:43:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 18:43:57,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:43:57,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893761067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:43:57,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:43:57,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-02 18:43:57,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250640479] [2023-12-02 18:43:57,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:43:57,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:43:57,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:43:57,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:43:57,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:43:57,971 INFO L87 Difference]: Start difference. First operand 1839 states and 3546 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 18:43:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:43:58,511 INFO L93 Difference]: Finished difference Result 2218 states and 4089 transitions. [2023-12-02 18:43:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:43:58,512 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2023-12-02 18:43:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:43:58,529 INFO L225 Difference]: With dead ends: 2218 [2023-12-02 18:43:58,529 INFO L226 Difference]: Without dead ends: 2025 [2023-12-02 18:43:58,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:43:58,533 INFO L413 NwaCegarLoop]: 3225 mSDtfsCounter, 3394 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3394 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:43:58,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3394 Valid, 3342 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:43:58,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2023-12-02 18:43:58,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2019. [2023-12-02 18:43:58,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 1933 states have (on average 1.9022245214692188) internal successors, (3677), 1938 states have internal predecessors, (3677), 60 states have call successors, (60), 25 states have call predecessors, (60), 24 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2023-12-02 18:43:58,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3795 transitions. [2023-12-02 18:43:58,620 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3795 transitions. Word has length 82 [2023-12-02 18:43:58,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:43:58,621 INFO L495 AbstractCegarLoop]: Abstraction has 2019 states and 3795 transitions. [2023-12-02 18:43:58,621 INFO L496 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 18:43:58,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3795 transitions. [2023-12-02 18:43:58,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 18:43:58,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:43:58,626 INFO L195 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, 1] [2023-12-02 18:43:58,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:43:58,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 18:43:58,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:43:58,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:43:58,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1671518662, now seen corresponding path program 1 times [2023-12-02 18:43:58,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:43:58,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239457430] [2023-12-02 18:43:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:43:58,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:43:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:43:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 18:43:58,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:43:58,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239457430] [2023-12-02 18:43:58,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239457430] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:43:58,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361929747] [2023-12-02 18:43:58,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:43:58,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:43:58,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:43:58,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:43:58,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:43:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:43:59,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:43:59,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:43:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 18:43:59,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:43:59,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361929747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:43:59,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:43:59,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-12-02 18:43:59,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5682542] [2023-12-02 18:43:59,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:43:59,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:43:59,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:43:59,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:43:59,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:43:59,190 INFO L87 Difference]: Start difference. First operand 2019 states and 3795 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 18:43:59,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:43:59,665 INFO L93 Difference]: Finished difference Result 2752 states and 4838 transitions. [2023-12-02 18:43:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:43:59,666 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2023-12-02 18:43:59,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:43:59,682 INFO L225 Difference]: With dead ends: 2752 [2023-12-02 18:43:59,683 INFO L226 Difference]: Without dead ends: 2379 [2023-12-02 18:43:59,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:43:59,687 INFO L413 NwaCegarLoop]: 3223 mSDtfsCounter, 3397 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3397 SdHoareTripleChecker+Valid, 3340 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:43:59,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3397 Valid, 3340 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:43:59,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2023-12-02 18:43:59,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 2371. [2023-12-02 18:43:59,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2211 states have (on average 1.835820895522388) internal successors, (4059), 2218 states have internal predecessors, (4059), 110 states have call successors, (110), 49 states have call predecessors, (110), 48 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2023-12-02 18:43:59,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 4277 transitions. [2023-12-02 18:43:59,801 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 4277 transitions. Word has length 82 [2023-12-02 18:43:59,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:43:59,802 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 4277 transitions. [2023-12-02 18:43:59,802 INFO L496 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 18:43:59,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 4277 transitions. [2023-12-02 18:43:59,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 18:43:59,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:43:59,807 INFO L195 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, 1] [2023-12-02 18:43:59,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 18:44:00,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:44:00,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:44:00,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:00,009 INFO L85 PathProgramCache]: Analyzing trace with hash -374901222, now seen corresponding path program 1 times [2023-12-02 18:44:00,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:44:00,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704859402] [2023-12-02 18:44:00,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:00,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:44:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 18:44:00,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:44:00,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704859402] [2023-12-02 18:44:00,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704859402] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:44:00,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:44:00,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:44:00,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825692777] [2023-12-02 18:44:00,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:44:00,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:44:00,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:44:00,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:44:00,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:44:00,121 INFO L87 Difference]: Start difference. First operand 2371 states and 4277 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 18:44:00,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:44:00,623 INFO L93 Difference]: Finished difference Result 2947 states and 5092 transitions. [2023-12-02 18:44:00,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:44:00,623 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), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2023-12-02 18:44:00,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:44:00,642 INFO L225 Difference]: With dead ends: 2947 [2023-12-02 18:44:00,642 INFO L226 Difference]: Without dead ends: 2567 [2023-12-02 18:44:00,645 INFO L412 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 [2023-12-02 18:44:00,646 INFO L413 NwaCegarLoop]: 3245 mSDtfsCounter, 59 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:44:00,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 6431 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:44:00,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2023-12-02 18:44:00,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2495. [2023-12-02 18:44:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2495 states, 2327 states have (on average 1.821658788139235) internal successors, (4239), 2334 states have internal predecessors, (4239), 114 states have call successors, (114), 53 states have call predecessors, (114), 52 states have return successors, (112), 108 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-02 18:44:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2495 states to 2495 states and 4465 transitions. [2023-12-02 18:44:00,752 INFO L78 Accepts]: Start accepts. Automaton has 2495 states and 4465 transitions. Word has length 82 [2023-12-02 18:44:00,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:44:00,753 INFO L495 AbstractCegarLoop]: Abstraction has 2495 states and 4465 transitions. [2023-12-02 18:44:00,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 18:44:00,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2495 states and 4465 transitions. [2023-12-02 18:44:00,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 18:44:00,758 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:44:00,758 INFO L195 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, 1] [2023-12-02 18:44:00,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 18:44:00,759 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:44:00,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:00,759 INFO L85 PathProgramCache]: Analyzing trace with hash -537790352, now seen corresponding path program 1 times [2023-12-02 18:44:00,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:44:00,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659481342] [2023-12-02 18:44:00,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:00,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:44:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-02 18:44:00,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:44:00,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659481342] [2023-12-02 18:44:00,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659481342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:44:00,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:44:00,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:44:00,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762257141] [2023-12-02 18:44:00,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:44:00,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:44:00,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:44:00,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:44:00,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:44:00,851 INFO L87 Difference]: Start difference. First operand 2495 states and 4465 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:44:01,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:44:01,313 INFO L93 Difference]: Finished difference Result 4156 states and 6826 transitions. [2023-12-02 18:44:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:44:01,314 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 109 [2023-12-02 18:44:01,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:44:01,336 INFO L225 Difference]: With dead ends: 4156 [2023-12-02 18:44:01,336 INFO L226 Difference]: Without dead ends: 3307 [2023-12-02 18:44:01,340 INFO L412 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 [2023-12-02 18:44:01,341 INFO L413 NwaCegarLoop]: 3195 mSDtfsCounter, 3387 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3387 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:44:01,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3387 Valid, 3312 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:44:01,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2023-12-02 18:44:01,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 3291. [2023-12-02 18:44:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 2971 states have (on average 1.7256815886906764) internal successors, (5127), 2982 states have internal predecessors, (5127), 214 states have call successors, (214), 105 states have call predecessors, (214), 104 states have return successors, (212), 204 states have call predecessors, (212), 212 states have call successors, (212) [2023-12-02 18:44:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 5553 transitions. [2023-12-02 18:44:01,477 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 5553 transitions. Word has length 109 [2023-12-02 18:44:01,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:44:01,478 INFO L495 AbstractCegarLoop]: Abstraction has 3291 states and 5553 transitions. [2023-12-02 18:44:01,478 INFO L496 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:44:01,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 5553 transitions. [2023-12-02 18:44:01,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-02 18:44:01,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:44:01,485 INFO L195 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, 1] [2023-12-02 18:44:01,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 18:44:01,485 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:44:01,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:01,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2120911177, now seen corresponding path program 1 times [2023-12-02 18:44:01,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:44:01,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604132350] [2023-12-02 18:44:01,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:01,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:44:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-02 18:44:01,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:44:01,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604132350] [2023-12-02 18:44:01,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604132350] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:44:01,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:44:01,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:44:01,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183177934] [2023-12-02 18:44:01,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:44:01,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:44:01,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:44:01,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:44:01,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:44:01,572 INFO L87 Difference]: Start difference. First operand 3291 states and 5553 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:44:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:44:02,179 INFO L93 Difference]: Finished difference Result 6508 states and 10066 transitions. [2023-12-02 18:44:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:44:02,179 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 109 [2023-12-02 18:44:02,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:44:02,205 INFO L225 Difference]: With dead ends: 6508 [2023-12-02 18:44:02,206 INFO L226 Difference]: Without dead ends: 4863 [2023-12-02 18:44:02,211 INFO L412 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 [2023-12-02 18:44:02,212 INFO L413 NwaCegarLoop]: 3208 mSDtfsCounter, 3390 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:44:02,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3390 Valid, 3325 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:44:02,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2023-12-02 18:44:02,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 4835. [2023-12-02 18:44:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4835 states, 4219 states have (on average 1.617207869163309) internal successors, (6823), 4238 states have internal predecessors, (6823), 406 states have call successors, (406), 209 states have call predecessors, (406), 208 states have return successors, (404), 388 states have call predecessors, (404), 404 states have call successors, (404) [2023-12-02 18:44:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4835 states to 4835 states and 7633 transitions. [2023-12-02 18:44:02,416 INFO L78 Accepts]: Start accepts. Automaton has 4835 states and 7633 transitions. Word has length 109 [2023-12-02 18:44:02,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:44:02,416 INFO L495 AbstractCegarLoop]: Abstraction has 4835 states and 7633 transitions. [2023-12-02 18:44:02,417 INFO L496 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, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:44:02,417 INFO L276 IsEmpty]: Start isEmpty. Operand 4835 states and 7633 transitions. [2023-12-02 18:44:02,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 18:44:02,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:44:02,430 INFO L195 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, 1] [2023-12-02 18:44:02,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 18:44:02,431 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:44:02,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:02,431 INFO L85 PathProgramCache]: Analyzing trace with hash 562934789, now seen corresponding path program 1 times [2023-12-02 18:44:02,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:44:02,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017365507] [2023-12-02 18:44:02,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:02,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:44:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 18:44:02,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:44:02,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017365507] [2023-12-02 18:44:02,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017365507] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:44:02,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737141300] [2023-12-02 18:44:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:02,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:44:02,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:44:02,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:44:02,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:44:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:02,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:44:02,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:44:02,971 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 18:44:02,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:44:02,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737141300] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:44:02,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:44:02,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 18:44:02,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631992397] [2023-12-02 18:44:02,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:44:02,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:44:02,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:44:02,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:44:02,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:44:02,976 INFO L87 Difference]: Start difference. First operand 4835 states and 7633 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:44:03,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:44:03,586 INFO L93 Difference]: Finished difference Result 6499 states and 10031 transitions. [2023-12-02 18:44:03,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:44:03,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 124 [2023-12-02 18:44:03,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:44:03,613 INFO L225 Difference]: With dead ends: 6499 [2023-12-02 18:44:03,614 INFO L226 Difference]: Without dead ends: 4855 [2023-12-02 18:44:03,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:44:03,622 INFO L413 NwaCegarLoop]: 3269 mSDtfsCounter, 120 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6444 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:44:03,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6444 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:44:03,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4855 states. [2023-12-02 18:44:03,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4855 to 4819. [2023-12-02 18:44:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4819 states, 4203 states have (on average 1.6043302403045443) internal successors, (6743), 4222 states have internal predecessors, (6743), 406 states have call successors, (406), 209 states have call predecessors, (406), 208 states have return successors, (404), 388 states have call predecessors, (404), 404 states have call successors, (404) [2023-12-02 18:44:03,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4819 states to 4819 states and 7553 transitions. [2023-12-02 18:44:03,799 INFO L78 Accepts]: Start accepts. Automaton has 4819 states and 7553 transitions. Word has length 124 [2023-12-02 18:44:03,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:44:03,799 INFO L495 AbstractCegarLoop]: Abstraction has 4819 states and 7553 transitions. [2023-12-02 18:44:03,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:44:03,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4819 states and 7553 transitions. [2023-12-02 18:44:03,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 18:44:03,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:44:03,810 INFO L195 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, 1] [2023-12-02 18:44:03,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 18:44:04,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 18:44:04,011 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:44:04,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash 371859143, now seen corresponding path program 1 times [2023-12-02 18:44:04,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:44:04,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411586613] [2023-12-02 18:44:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:04,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:44:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 18:44:04,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:44:04,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411586613] [2023-12-02 18:44:04,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411586613] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:44:04,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529205369] [2023-12-02 18:44:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:04,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:44:04,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:44:04,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:44:04,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:44:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:04,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:44:04,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:44:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-02 18:44:04,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:44:04,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529205369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:44:04,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:44:04,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 18:44:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791566785] [2023-12-02 18:44:04,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:44:04,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:44:04,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:44:04,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:44:04,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:44:04,549 INFO L87 Difference]: Start difference. First operand 4819 states and 7553 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, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 18:44:04,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:44:04,955 INFO L93 Difference]: Finished difference Result 7153 states and 10638 transitions. [2023-12-02 18:44:04,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:44:04,955 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, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 124 [2023-12-02 18:44:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:44:04,982 INFO L225 Difference]: With dead ends: 7153 [2023-12-02 18:44:04,983 INFO L226 Difference]: Without dead ends: 5533 [2023-12-02 18:44:04,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:44:04,991 INFO L413 NwaCegarLoop]: 3197 mSDtfsCounter, 3399 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3399 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:44:04,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3399 Valid, 3226 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:44:05,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2023-12-02 18:44:05,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 5533. [2023-12-02 18:44:05,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5533 states, 4825 states have (on average 1.5496373056994819) internal successors, (7477), 4844 states have internal predecessors, (7477), 436 states have call successors, (436), 271 states have call predecessors, (436), 270 states have return successors, (434), 418 states have call predecessors, (434), 434 states have call successors, (434) [2023-12-02 18:44:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5533 states to 5533 states and 8347 transitions. [2023-12-02 18:44:05,269 INFO L78 Accepts]: Start accepts. Automaton has 5533 states and 8347 transitions. Word has length 124 [2023-12-02 18:44:05,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:44:05,270 INFO L495 AbstractCegarLoop]: Abstraction has 5533 states and 8347 transitions. [2023-12-02 18:44:05,270 INFO L496 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, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 18:44:05,270 INFO L276 IsEmpty]: Start isEmpty. Operand 5533 states and 8347 transitions. [2023-12-02 18:44:05,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 18:44:05,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:44:05,284 INFO L195 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, 1] [2023-12-02 18:44:05,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 18:44:05,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:44:05,490 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:44:05,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:05,490 INFO L85 PathProgramCache]: Analyzing trace with hash -851462385, now seen corresponding path program 1 times [2023-12-02 18:44:05,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:44:05,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495145257] [2023-12-02 18:44:05,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:05,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:44:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 18:44:05,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:44:05,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495145257] [2023-12-02 18:44:05,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495145257] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:44:05,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767239834] [2023-12-02 18:44:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:05,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:44:05,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:44:05,744 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:44:05,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 18:44:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:05,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:44:05,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:44:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:44:05,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:44:05,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767239834] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:44:05,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:44:05,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 18:44:05,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806644018] [2023-12-02 18:44:05,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:44:05,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:44:05,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:44:05,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:44:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:44:05,941 INFO L87 Difference]: Start difference. First operand 5533 states and 8347 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, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 18:44:06,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:44:06,541 INFO L93 Difference]: Finished difference Result 10841 states and 15428 transitions. [2023-12-02 18:44:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:44:06,541 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, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 124 [2023-12-02 18:44:06,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:44:06,566 INFO L225 Difference]: With dead ends: 10841 [2023-12-02 18:44:06,566 INFO L226 Difference]: Without dead ends: 6955 [2023-12-02 18:44:06,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:44:06,578 INFO L413 NwaCegarLoop]: 3197 mSDtfsCounter, 70 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 6362 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:44:06,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 6362 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:44:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6955 states. [2023-12-02 18:44:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6955 to 5973. [2023-12-02 18:44:06,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5973 states, 5229 states have (on average 1.5469497035762096) internal successors, (8089), 5249 states have internal predecessors, (8089), 454 states have call successors, (454), 289 states have call predecessors, (454), 288 states have return successors, (452), 435 states have call predecessors, (452), 452 states have call successors, (452) [2023-12-02 18:44:06,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5973 states to 5973 states and 8995 transitions. [2023-12-02 18:44:06,802 INFO L78 Accepts]: Start accepts. Automaton has 5973 states and 8995 transitions. Word has length 124 [2023-12-02 18:44:06,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:44:06,802 INFO L495 AbstractCegarLoop]: Abstraction has 5973 states and 8995 transitions. [2023-12-02 18:44:06,803 INFO L496 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, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 18:44:06,803 INFO L276 IsEmpty]: Start isEmpty. Operand 5973 states and 8995 transitions. [2023-12-02 18:44:06,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 18:44:06,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:44:06,819 INFO L195 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, 1] [2023-12-02 18:44:06,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 18:44:07,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 18:44:07,020 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:44:07,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:07,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1288741630, now seen corresponding path program 2 times [2023-12-02 18:44:07,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:44:07,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690765147] [2023-12-02 18:44:07,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:07,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:44:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 18:44:07,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:44:07,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690765147] [2023-12-02 18:44:07,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690765147] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:44:07,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288765065] [2023-12-02 18:44:07,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:44:07,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:44:07,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:44:07,149 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:44:07,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 18:44:07,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 18:44:07,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:44:07,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:44:07,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:44:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 18:44:07,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:44:07,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288765065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:44:07,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:44:07,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 18:44:07,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009083925] [2023-12-02 18:44:07,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:44:07,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:44:07,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:44:07,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:44:07,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:44:07,348 INFO L87 Difference]: Start difference. First operand 5973 states and 8995 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, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:44:07,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:44:07,924 INFO L93 Difference]: Finished difference Result 9659 states and 14005 transitions. [2023-12-02 18:44:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:44:07,924 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, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 124 [2023-12-02 18:44:07,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:44:07,943 INFO L225 Difference]: With dead ends: 9659 [2023-12-02 18:44:07,943 INFO L226 Difference]: Without dead ends: 7447 [2023-12-02 18:44:07,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:44:07,950 INFO L413 NwaCegarLoop]: 3263 mSDtfsCounter, 79 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 6449 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:44:07,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 6449 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:44:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7447 states. [2023-12-02 18:44:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7447 to 6757. [2023-12-02 18:44:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6757 states, 5949 states have (on average 1.5372331484283073) internal successors, (9145), 5969 states have internal predecessors, (9145), 486 states have call successors, (486), 321 states have call predecessors, (486), 320 states have return successors, (484), 467 states have call predecessors, (484), 484 states have call successors, (484) [2023-12-02 18:44:08,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6757 states to 6757 states and 10115 transitions. [2023-12-02 18:44:08,252 INFO L78 Accepts]: Start accepts. Automaton has 6757 states and 10115 transitions. Word has length 124 [2023-12-02 18:44:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:44:08,253 INFO L495 AbstractCegarLoop]: Abstraction has 6757 states and 10115 transitions. [2023-12-02 18:44:08,253 INFO L496 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, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:44:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 6757 states and 10115 transitions. [2023-12-02 18:44:08,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 18:44:08,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:44:08,270 INFO L195 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, 1] [2023-12-02 18:44:08,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-02 18:44:08,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 18:44:08,471 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:44:08,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:08,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1725565081, now seen corresponding path program 1 times [2023-12-02 18:44:08,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:44:08,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941494457] [2023-12-02 18:44:08,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:08,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:44:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-02 18:44:08,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:44:08,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941494457] [2023-12-02 18:44:08,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941494457] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:44:08,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201054673] [2023-12-02 18:44:08,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:08,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:44:08,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:44:08,587 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:44:08,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 18:44:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:08,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:44:08,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:44:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 18:44:08,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:44:08,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201054673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:44:08,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:44:08,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 18:44:08,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988630770] [2023-12-02 18:44:08,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:44:08,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:44:08,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:44:08,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:44:08,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:44:08,773 INFO L87 Difference]: Start difference. First operand 6757 states and 10115 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, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:44:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:44:09,355 INFO L93 Difference]: Finished difference Result 11451 states and 16549 transitions. [2023-12-02 18:44:09,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:44:09,356 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, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 124 [2023-12-02 18:44:09,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:44:09,383 INFO L225 Difference]: With dead ends: 11451 [2023-12-02 18:44:09,383 INFO L226 Difference]: Without dead ends: 8815 [2023-12-02 18:44:09,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:44:09,392 INFO L413 NwaCegarLoop]: 3274 mSDtfsCounter, 91 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 6461 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:44:09,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 6461 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:44:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8815 states. [2023-12-02 18:44:09,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8815 to 7901. [2023-12-02 18:44:09,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7901 states, 6997 states have (on average 1.5242246677147349) internal successors, (10665), 7017 states have internal predecessors, (10665), 534 states have call successors, (534), 369 states have call predecessors, (534), 368 states have return successors, (532), 515 states have call predecessors, (532), 532 states have call successors, (532) [2023-12-02 18:44:09,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7901 states to 7901 states and 11731 transitions. [2023-12-02 18:44:09,730 INFO L78 Accepts]: Start accepts. Automaton has 7901 states and 11731 transitions. Word has length 124 [2023-12-02 18:44:09,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:44:09,731 INFO L495 AbstractCegarLoop]: Abstraction has 7901 states and 11731 transitions. [2023-12-02 18:44:09,731 INFO L496 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, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:44:09,731 INFO L276 IsEmpty]: Start isEmpty. Operand 7901 states and 11731 transitions. [2023-12-02 18:44:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-02 18:44:09,748 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:44:09,748 INFO L195 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, 1] [2023-12-02 18:44:09,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 18:44:09,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 18:44:09,949 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:44:09,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:09,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1457864999, now seen corresponding path program 1 times [2023-12-02 18:44:09,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:44:09,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504643584] [2023-12-02 18:44:09,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:09,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:44:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:10,076 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-02 18:44:10,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:44:10,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504643584] [2023-12-02 18:44:10,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504643584] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:44:10,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511156802] [2023-12-02 18:44:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:10,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:44:10,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:44:10,078 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:44:10,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 18:44:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:10,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:44:10,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:44:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 18:44:10,258 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:44:10,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511156802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:44:10,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:44:10,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 18:44:10,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134026284] [2023-12-02 18:44:10,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:44:10,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:44:10,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:44:10,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:44:10,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:44:10,260 INFO L87 Difference]: Start difference. First operand 7901 states and 11731 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, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:44:10,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:44:10,936 INFO L93 Difference]: Finished difference Result 13507 states and 19421 transitions. [2023-12-02 18:44:10,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:44:10,937 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, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 124 [2023-12-02 18:44:10,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:44:10,966 INFO L225 Difference]: With dead ends: 13507 [2023-12-02 18:44:10,966 INFO L226 Difference]: Without dead ends: 10311 [2023-12-02 18:44:10,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:44:10,974 INFO L413 NwaCegarLoop]: 3269 mSDtfsCounter, 85 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 6456 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:44:10,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 6456 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:44:10,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10311 states. [2023-12-02 18:44:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10311 to 9509. [2023-12-02 18:44:11,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9509 states, 8461 states have (on average 1.5044321002245598) internal successors, (12729), 8481 states have internal predecessors, (12729), 606 states have call successors, (606), 441 states have call predecessors, (606), 440 states have return successors, (604), 587 states have call predecessors, (604), 604 states have call successors, (604) [2023-12-02 18:44:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9509 states to 9509 states and 13939 transitions. [2023-12-02 18:44:11,270 INFO L78 Accepts]: Start accepts. Automaton has 9509 states and 13939 transitions. Word has length 124 [2023-12-02 18:44:11,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:44:11,270 INFO L495 AbstractCegarLoop]: Abstraction has 9509 states and 13939 transitions. [2023-12-02 18:44:11,270 INFO L496 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, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:44:11,271 INFO L276 IsEmpty]: Start isEmpty. Operand 9509 states and 13939 transitions. [2023-12-02 18:44:11,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-12-02 18:44:11,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:44:11,285 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:44:11,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-02 18:44:11,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 18:44:11,487 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:44:11,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:11,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1653152195, now seen corresponding path program 1 times [2023-12-02 18:44:11,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:44:11,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084044264] [2023-12-02 18:44:11,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:11,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:44:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-02 18:44:11,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:44:11,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084044264] [2023-12-02 18:44:11,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084044264] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:44:11,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486078896] [2023-12-02 18:44:11,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:11,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:44:11,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:44:11,571 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:44:11,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 18:44:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:11,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:44:11,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:44:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-02 18:44:11,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:44:11,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486078896] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:44:11,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:44:11,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 18:44:11,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578518779] [2023-12-02 18:44:11,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:44:11,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:44:11,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:44:11,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:44:11,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:44:11,763 INFO L87 Difference]: Start difference. First operand 9509 states and 13939 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:44:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:44:12,494 INFO L93 Difference]: Finished difference Result 16407 states and 23445 transitions. [2023-12-02 18:44:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:44:12,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 125 [2023-12-02 18:44:12,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:44:12,522 INFO L225 Difference]: With dead ends: 16407 [2023-12-02 18:44:12,523 INFO L226 Difference]: Without dead ends: 12519 [2023-12-02 18:44:12,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:44:12,533 INFO L413 NwaCegarLoop]: 3247 mSDtfsCounter, 73 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 6434 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:44:12,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 6434 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:44:12,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12519 states. [2023-12-02 18:44:13,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12519 to 11957. [2023-12-02 18:44:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11957 states, 10693 states have (on average 1.4866735247358085) internal successors, (15897), 10713 states have internal predecessors, (15897), 714 states have call successors, (714), 549 states have call predecessors, (714), 548 states have return successors, (712), 695 states have call predecessors, (712), 712 states have call successors, (712) [2023-12-02 18:44:13,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11957 states to 11957 states and 17323 transitions. [2023-12-02 18:44:13,126 INFO L78 Accepts]: Start accepts. Automaton has 11957 states and 17323 transitions. Word has length 125 [2023-12-02 18:44:13,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:44:13,127 INFO L495 AbstractCegarLoop]: Abstraction has 11957 states and 17323 transitions. [2023-12-02 18:44:13,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:44:13,127 INFO L276 IsEmpty]: Start isEmpty. Operand 11957 states and 17323 transitions. [2023-12-02 18:44:13,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-02 18:44:13,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:44:13,146 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:44:13,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 18:44:13,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 18:44:13,347 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:44:13,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:13,347 INFO L85 PathProgramCache]: Analyzing trace with hash 143116403, now seen corresponding path program 1 times [2023-12-02 18:44:13,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:44:13,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723549658] [2023-12-02 18:44:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:13,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:44:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 18:44:13,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:44:13,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723549658] [2023-12-02 18:44:13,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723549658] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:44:13,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898154545] [2023-12-02 18:44:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:13,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:44:13,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:44:13,783 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:44:13,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 18:44:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:13,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 18:44:13,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:44:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 18:44:14,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:44:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-02 18:44:14,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898154545] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:44:14,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [319451544] [2023-12-02 18:44:14,537 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2023-12-02 18:44:14,537 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:44:14,540 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:44:14,544 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:44:14,544 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:44:33,599 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 77 for LOIs [2023-12-02 18:44:33,612 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 141 for LOIs [2023-12-02 18:44:33,734 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 174 for LOIs [2023-12-02 18:44:34,106 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 18:44:34,107 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 18:44:34,122 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 114 for LOIs [2023-12-02 18:44:35,082 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 1 for LOIs [2023-12-02 18:44:35,204 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:44:45,150 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '199800#(and (= ~a15~0 1) (= 5 ~a20~0) (<= 1 |#StackHeapBarrier|) (= ~t1_pc~0 0) (= ~t1_i~0 1) (= ~a25~0 1) (not (= ~token~0 (+ ~local~0 4))) (exists ((|v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_5| Int)) (and (<= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_5| 2147483647) (not (= |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_5| 0)) (<= 0 (+ |v_ULTIMATE.start_eval_~tmp_ndt_1~0#1_BEFORE_CALL_5| 2147483648)))) (= ~a~0 1) (= ~d~0 4) (= 0 ~t3_pc~0) (= ~a16~0 1) (= 5 ~e~0) (= ~m_pc~0 1) (= ~m_i~0 1) (= ~a12~0 4) (= ~a9~0 18) (= 6 ~f~0) (= 3 ~c~0) (= ~t2_i~0 1) (= 2 ~b~0) (= 0 ~t2_pc~0) (= ~m_st~0 1) (= ~a27~0 1) (= 0 ~t4_pc~0) (= ~t3_i~0 1) (= ~t4_i~0 1) (= ~a2~0 10))' at error location [2023-12-02 18:44:45,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:44:45,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:44:45,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 9 [2023-12-02 18:44:45,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650216821] [2023-12-02 18:44:45,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:44:45,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 18:44:45,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:44:45,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 18:44:45,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=3711, Unknown=0, NotChecked=0, Total=4032 [2023-12-02 18:44:45,154 INFO L87 Difference]: Start difference. First operand 11957 states and 17323 transitions. Second operand has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (29), 6 states have call predecessors, (29), 7 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2023-12-02 18:44:46,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:44:46,451 INFO L93 Difference]: Finished difference Result 26101 states and 36541 transitions. [2023-12-02 18:44:46,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:44:46,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (29), 6 states have call predecessors, (29), 7 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) Word has length 129 [2023-12-02 18:44:46,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:44:46,480 INFO L225 Difference]: With dead ends: 26101 [2023-12-02 18:44:46,480 INFO L226 Difference]: Without dead ends: 15791 [2023-12-02 18:44:46,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=384, Invalid=4446, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 18:44:46,504 INFO L413 NwaCegarLoop]: 3201 mSDtfsCounter, 3607 mSDsluCounter, 6519 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3620 SdHoareTripleChecker+Valid, 9720 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:44:46,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3620 Valid, 9720 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 18:44:46,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15791 states. [2023-12-02 18:44:47,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15791 to 15539. [2023-12-02 18:44:47,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15539 states, 13767 states have (on average 1.4509333914433065) internal successors, (19975), 13795 states have internal predecessors, (19975), 1004 states have call successors, (1004), 767 states have call predecessors, (1004), 766 states have return successors, (1002), 977 states have call predecessors, (1002), 1002 states have call successors, (1002) [2023-12-02 18:44:47,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15539 states to 15539 states and 21981 transitions. [2023-12-02 18:44:47,077 INFO L78 Accepts]: Start accepts. Automaton has 15539 states and 21981 transitions. Word has length 129 [2023-12-02 18:44:47,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:44:47,078 INFO L495 AbstractCegarLoop]: Abstraction has 15539 states and 21981 transitions. [2023-12-02 18:44:47,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 5 states have call successors, (29), 6 states have call predecessors, (29), 7 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2023-12-02 18:44:47,078 INFO L276 IsEmpty]: Start isEmpty. Operand 15539 states and 21981 transitions. [2023-12-02 18:44:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 18:44:47,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:44:47,097 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:44:47,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 18:44:47,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-02 18:44:47,297 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:44:47,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:44:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1529378488, now seen corresponding path program 1 times [2023-12-02 18:44:47,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:44:47,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209645131] [2023-12-02 18:44:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:47,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:44:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:47,700 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 18:44:47,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:44:47,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209645131] [2023-12-02 18:44:47,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209645131] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:44:47,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327512517] [2023-12-02 18:44:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:44:47,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:44:47,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:44:47,702 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:44:47,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 18:44:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:44:47,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 18:44:47,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:44:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 68 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 18:44:47,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:44:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 18:44:48,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327512517] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:44:48,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1009991293] [2023-12-02 18:44:48,542 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2023-12-02 18:44:48,543 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:44:48,543 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:44:48,543 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:44:48,543 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:44:57,344 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 18:44:57,346 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 142 for LOIs [2023-12-02 18:44:57,488 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 155 for LOIs [2023-12-02 18:44:57,819 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 18:44:57,819 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 18:44:57,833 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 18:44:57,903 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 14 for LOIs [2023-12-02 18:44:57,944 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:45:06,139 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '249822#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 18:45:06,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:45:06,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:45:06,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 16 [2023-12-02 18:45:06,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56759366] [2023-12-02 18:45:06,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:45:06,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 18:45:06,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:45:06,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 18:45:06,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=4586, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 18:45:06,144 INFO L87 Difference]: Start difference. First operand 15539 states and 21981 transitions. Second operand has 16 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) [2023-12-02 18:45:12,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:45:12,365 INFO L93 Difference]: Finished difference Result 45064 states and 62711 transitions. [2023-12-02 18:45:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-12-02 18:45:12,366 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) Word has length 131 [2023-12-02 18:45:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:45:12,452 INFO L225 Difference]: With dead ends: 45064 [2023-12-02 18:45:12,452 INFO L226 Difference]: Without dead ends: 30860 [2023-12-02 18:45:12,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 392 SyntacticMatches, 2 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13897 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=2804, Invalid=31978, Unknown=0, NotChecked=0, Total=34782 [2023-12-02 18:45:12,496 INFO L413 NwaCegarLoop]: 3598 mSDtfsCounter, 11453 mSDsluCounter, 25098 mSDsCounter, 0 mSdLazyCounter, 4062 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11459 SdHoareTripleChecker+Valid, 28696 SdHoareTripleChecker+Invalid, 4480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 4062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:45:12,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11459 Valid, 28696 Invalid, 4480 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [418 Valid, 4062 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 18:45:12,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30860 states. [2023-12-02 18:45:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30860 to 21893. [2023-12-02 18:45:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21893 states, 19449 states have (on average 1.394570414931359) internal successors, (27123), 19483 states have internal predecessors, (27123), 1304 states have call successors, (1304), 1139 states have call predecessors, (1304), 1138 states have return successors, (1302), 1271 states have call predecessors, (1302), 1302 states have call successors, (1302) [2023-12-02 18:45:13,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21893 states to 21893 states and 29729 transitions. [2023-12-02 18:45:13,820 INFO L78 Accepts]: Start accepts. Automaton has 21893 states and 29729 transitions. Word has length 131 [2023-12-02 18:45:13,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:45:13,820 INFO L495 AbstractCegarLoop]: Abstraction has 21893 states and 29729 transitions. [2023-12-02 18:45:13,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 11.071428571428571) internal successors, (155), 14 states have internal predecessors, (155), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) [2023-12-02 18:45:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand 21893 states and 29729 transitions. [2023-12-02 18:45:13,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 18:45:13,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:45:13,833 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:45:13,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 18:45:14,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 18:45:14,034 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:45:14,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:45:14,034 INFO L85 PathProgramCache]: Analyzing trace with hash 633410450, now seen corresponding path program 1 times [2023-12-02 18:45:14,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:45:14,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803757420] [2023-12-02 18:45:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:14,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:45:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 18:45:14,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:45:14,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803757420] [2023-12-02 18:45:14,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803757420] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:45:14,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559443970] [2023-12-02 18:45:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:14,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:45:14,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:45:14,236 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:45:14,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 18:45:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:14,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:45:14,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:45:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-02 18:45:14,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:45:14,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559443970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:45:14,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:45:14,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-02 18:45:14,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870362643] [2023-12-02 18:45:14,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:45:14,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:45:14,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:45:14,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:45:14,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:45:14,433 INFO L87 Difference]: Start difference. First operand 21893 states and 29729 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 18:45:15,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:45:15,695 INFO L93 Difference]: Finished difference Result 31133 states and 41875 transitions. [2023-12-02 18:45:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:45:15,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 131 [2023-12-02 18:45:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:45:15,748 INFO L225 Difference]: With dead ends: 31133 [2023-12-02 18:45:15,748 INFO L226 Difference]: Without dead ends: 22353 [2023-12-02 18:45:15,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:45:15,765 INFO L413 NwaCegarLoop]: 3238 mSDtfsCounter, 3360 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3360 SdHoareTripleChecker+Valid, 6595 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:45:15,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3360 Valid, 6595 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:45:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22353 states. [2023-12-02 18:45:16,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22353 to 22245. [2023-12-02 18:45:16,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22245 states, 19753 states have (on average 1.3925479673973573) internal successors, (27507), 19811 states have internal predecessors, (27507), 1304 states have call successors, (1304), 1139 states have call predecessors, (1304), 1186 states have return successors, (1350), 1295 states have call predecessors, (1350), 1302 states have call successors, (1350) [2023-12-02 18:45:16,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22245 states to 22245 states and 30161 transitions. [2023-12-02 18:45:16,873 INFO L78 Accepts]: Start accepts. Automaton has 22245 states and 30161 transitions. Word has length 131 [2023-12-02 18:45:16,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:45:16,873 INFO L495 AbstractCegarLoop]: Abstraction has 22245 states and 30161 transitions. [2023-12-02 18:45:16,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 18:45:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 22245 states and 30161 transitions. [2023-12-02 18:45:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-02 18:45:16,885 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:45:16,885 INFO L195 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, 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] [2023-12-02 18:45:16,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 18:45:17,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:45:17,086 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:45:17,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:45:17,086 INFO L85 PathProgramCache]: Analyzing trace with hash -985910043, now seen corresponding path program 1 times [2023-12-02 18:45:17,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:45:17,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13202864] [2023-12-02 18:45:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:45:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 31 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 18:45:17,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:45:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13202864] [2023-12-02 18:45:17,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13202864] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:45:17,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024738164] [2023-12-02 18:45:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:17,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:45:17,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:45:17,247 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:45:17,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 18:45:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:17,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:45:17,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:45:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 18:45:17,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:45:17,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024738164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:45:17,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:45:17,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 18:45:17,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178659379] [2023-12-02 18:45:17,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:45:17,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:45:17,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:45:17,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:45:17,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:45:17,445 INFO L87 Difference]: Start difference. First operand 22245 states and 30161 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 18:45:18,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:45:18,527 INFO L93 Difference]: Finished difference Result 31141 states and 41958 transitions. [2023-12-02 18:45:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:45:18,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 132 [2023-12-02 18:45:18,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:45:18,562 INFO L225 Difference]: With dead ends: 31141 [2023-12-02 18:45:18,562 INFO L226 Difference]: Without dead ends: 21809 [2023-12-02 18:45:18,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:45:18,576 INFO L413 NwaCegarLoop]: 3197 mSDtfsCounter, 28 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 6376 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:45:18,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 6376 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:45:18,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21809 states. [2023-12-02 18:45:19,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21809 to 21145. [2023-12-02 18:45:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21145 states, 18797 states have (on average 1.3982550406979837) internal successors, (26283), 18819 states have internal predecessors, (26283), 1256 states have call successors, (1256), 1091 states have call predecessors, (1256), 1090 states have return successors, (1254), 1235 states have call predecessors, (1254), 1254 states have call successors, (1254) [2023-12-02 18:45:19,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21145 states to 21145 states and 28793 transitions. [2023-12-02 18:45:19,639 INFO L78 Accepts]: Start accepts. Automaton has 21145 states and 28793 transitions. Word has length 132 [2023-12-02 18:45:19,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:45:19,640 INFO L495 AbstractCegarLoop]: Abstraction has 21145 states and 28793 transitions. [2023-12-02 18:45:19,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 18:45:19,640 INFO L276 IsEmpty]: Start isEmpty. Operand 21145 states and 28793 transitions. [2023-12-02 18:45:19,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-02 18:45:19,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:45:19,657 INFO L195 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, 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] [2023-12-02 18:45:19,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 18:45:19,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:45:19,857 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:45:19,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:45:19,858 INFO L85 PathProgramCache]: Analyzing trace with hash 984995950, now seen corresponding path program 1 times [2023-12-02 18:45:19,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:45:19,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326697782] [2023-12-02 18:45:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:19,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:45:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 23 proven. 31 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-12-02 18:45:20,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:45:20,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326697782] [2023-12-02 18:45:20,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326697782] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:45:20,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605993193] [2023-12-02 18:45:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:20,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:45:20,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:45:20,036 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:45:20,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 18:45:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:20,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:45:20,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:45:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 18:45:20,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:45:20,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605993193] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:45:20,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:45:20,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2023-12-02 18:45:20,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140628115] [2023-12-02 18:45:20,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:45:20,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:45:20,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:45:20,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:45:20,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:45:20,222 INFO L87 Difference]: Start difference. First operand 21145 states and 28793 transitions. Second operand has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:45:22,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:45:22,078 INFO L93 Difference]: Finished difference Result 46661 states and 62204 transitions. [2023-12-02 18:45:22,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:45:22,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 133 [2023-12-02 18:45:22,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:45:22,115 INFO L225 Difference]: With dead ends: 46661 [2023-12-02 18:45:22,115 INFO L226 Difference]: Without dead ends: 27210 [2023-12-02 18:45:22,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:45:22,127 INFO L413 NwaCegarLoop]: 3178 mSDtfsCounter, 6962 mSDsluCounter, 6266 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6975 SdHoareTripleChecker+Valid, 9444 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:45:22,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6975 Valid, 9444 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 18:45:22,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27210 states. [2023-12-02 18:45:23,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27210 to 27206. [2023-12-02 18:45:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27206 states, 24015 states have (on average 1.3670206121174266) internal successors, (32829), 24043 states have internal predecessors, (32829), 1709 states have call successors, (1709), 1481 states have call predecessors, (1709), 1480 states have return successors, (1707), 1682 states have call predecessors, (1707), 1707 states have call successors, (1707) [2023-12-02 18:45:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27206 states to 27206 states and 36245 transitions. [2023-12-02 18:45:23,469 INFO L78 Accepts]: Start accepts. Automaton has 27206 states and 36245 transitions. Word has length 133 [2023-12-02 18:45:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:45:23,470 INFO L495 AbstractCegarLoop]: Abstraction has 27206 states and 36245 transitions. [2023-12-02 18:45:23,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:45:23,470 INFO L276 IsEmpty]: Start isEmpty. Operand 27206 states and 36245 transitions. [2023-12-02 18:45:23,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 18:45:23,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:45:23,488 INFO L195 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, 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] [2023-12-02 18:45:23,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 18:45:23,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-02 18:45:23,688 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:45:23,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:45:23,689 INFO L85 PathProgramCache]: Analyzing trace with hash 916708365, now seen corresponding path program 1 times [2023-12-02 18:45:23,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:45:23,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006719920] [2023-12-02 18:45:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:23,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:45:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 33 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 18:45:23,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:45:23,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006719920] [2023-12-02 18:45:23,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006719920] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:45:23,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348053235] [2023-12-02 18:45:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:23,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:45:23,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:45:23,841 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:45:23,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 18:45:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:23,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:45:23,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:45:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 18:45:24,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:45:24,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348053235] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:45:24,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:45:24,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-12-02 18:45:24,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919520373] [2023-12-02 18:45:24,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:45:24,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:45:24,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:45:24,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:45:24,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:45:24,017 INFO L87 Difference]: Start difference. First operand 27206 states and 36245 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, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:45:25,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:45:25,703 INFO L93 Difference]: Finished difference Result 45529 states and 60451 transitions. [2023-12-02 18:45:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:45:25,703 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, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 137 [2023-12-02 18:45:25,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:45:25,743 INFO L225 Difference]: With dead ends: 45529 [2023-12-02 18:45:25,743 INFO L226 Difference]: Without dead ends: 27234 [2023-12-02 18:45:25,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:45:25,765 INFO L413 NwaCegarLoop]: 3279 mSDtfsCounter, 113 mSDsluCounter, 3173 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 6452 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:45:25,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 6452 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:45:25,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27234 states. [2023-12-02 18:45:27,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27234 to 26798. [2023-12-02 18:45:27,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26798 states, 23607 states have (on average 1.348455966450629) internal successors, (31833), 23635 states have internal predecessors, (31833), 1709 states have call successors, (1709), 1481 states have call predecessors, (1709), 1480 states have return successors, (1707), 1682 states have call predecessors, (1707), 1707 states have call successors, (1707) [2023-12-02 18:45:27,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26798 states to 26798 states and 35249 transitions. [2023-12-02 18:45:27,175 INFO L78 Accepts]: Start accepts. Automaton has 26798 states and 35249 transitions. Word has length 137 [2023-12-02 18:45:27,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:45:27,176 INFO L495 AbstractCegarLoop]: Abstraction has 26798 states and 35249 transitions. [2023-12-02 18:45:27,176 INFO L496 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, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:45:27,176 INFO L276 IsEmpty]: Start isEmpty. Operand 26798 states and 35249 transitions. [2023-12-02 18:45:27,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-02 18:45:27,188 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:45:27,189 INFO L195 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, 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] [2023-12-02 18:45:27,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 18:45:27,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:45:27,389 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:45:27,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:45:27,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1358388081, now seen corresponding path program 1 times [2023-12-02 18:45:27,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:45:27,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688300817] [2023-12-02 18:45:27,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:27,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:45:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-12-02 18:45:27,536 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:45:27,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688300817] [2023-12-02 18:45:27,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688300817] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:45:27,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096213885] [2023-12-02 18:45:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:27,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:45:27,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:45:27,537 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:45:27,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 18:45:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:27,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:45:27,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:45:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 18:45:27,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:45:27,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096213885] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:45:27,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:45:27,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2023-12-02 18:45:27,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481550520] [2023-12-02 18:45:27,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:45:27,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:45:27,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:45:27,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:45:27,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:45:27,746 INFO L87 Difference]: Start difference. First operand 26798 states and 35249 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:45:30,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:45:30,112 INFO L93 Difference]: Finished difference Result 59598 states and 76843 transitions. [2023-12-02 18:45:30,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:45:30,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 137 [2023-12-02 18:45:30,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:45:30,163 INFO L225 Difference]: With dead ends: 59598 [2023-12-02 18:45:30,163 INFO L226 Difference]: Without dead ends: 34494 [2023-12-02 18:45:30,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-02 18:45:30,182 INFO L413 NwaCegarLoop]: 3173 mSDtfsCounter, 3636 mSDsluCounter, 6331 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3649 SdHoareTripleChecker+Valid, 9504 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:45:30,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3649 Valid, 9504 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:45:30,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34494 states. [2023-12-02 18:45:32,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34494 to 34490. [2023-12-02 18:45:32,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34490 states, 30152 states have (on average 1.3152361369063412) internal successors, (39657), 30189 states have internal predecessors, (39657), 2327 states have call successors, (2327), 2010 states have call predecessors, (2327), 2009 states have return successors, (2325), 2291 states have call predecessors, (2325), 2325 states have call successors, (2325) [2023-12-02 18:45:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34490 states to 34490 states and 44309 transitions. [2023-12-02 18:45:32,100 INFO L78 Accepts]: Start accepts. Automaton has 34490 states and 44309 transitions. Word has length 137 [2023-12-02 18:45:32,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:45:32,101 INFO L495 AbstractCegarLoop]: Abstraction has 34490 states and 44309 transitions. [2023-12-02 18:45:32,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 18:45:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 34490 states and 44309 transitions. [2023-12-02 18:45:32,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 18:45:32,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:45:32,124 INFO L195 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, 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] [2023-12-02 18:45:32,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 18:45:32,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:45:32,325 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:45:32,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:45:32,325 INFO L85 PathProgramCache]: Analyzing trace with hash 326745561, now seen corresponding path program 1 times [2023-12-02 18:45:32,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:45:32,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962808213] [2023-12-02 18:45:32,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:32,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:45:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-02 18:45:32,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:45:32,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962808213] [2023-12-02 18:45:32,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962808213] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:45:32,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772882868] [2023-12-02 18:45:32,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:32,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:45:32,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:45:32,465 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:45:32,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 18:45:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:32,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:45:32,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:45:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 18:45:32,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:45:32,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772882868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:45:32,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:45:32,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-12-02 18:45:32,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810416152] [2023-12-02 18:45:32,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:45:32,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:45:32,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:45:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:45:32,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:45:32,648 INFO L87 Difference]: Start difference. First operand 34490 states and 44309 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, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 18:45:34,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:45:34,872 INFO L93 Difference]: Finished difference Result 58384 states and 74728 transitions. [2023-12-02 18:45:34,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:45:34,873 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, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 141 [2023-12-02 18:45:34,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:45:34,933 INFO L225 Difference]: With dead ends: 58384 [2023-12-02 18:45:34,933 INFO L226 Difference]: Without dead ends: 36366 [2023-12-02 18:45:34,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:45:34,957 INFO L413 NwaCegarLoop]: 3202 mSDtfsCounter, 3363 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3363 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:45:34,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3363 Valid, 3238 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:45:34,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36366 states. [2023-12-02 18:45:36,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36366 to 36212. [2023-12-02 18:45:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36212 states, 31708 states have (on average 1.3055064967831462) internal successors, (41395), 31745 states have internal predecessors, (41395), 2370 states have call successors, (2370), 2133 states have call predecessors, (2370), 2132 states have return successors, (2468), 2334 states have call predecessors, (2468), 2368 states have call successors, (2468) [2023-12-02 18:45:36,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36212 states to 36212 states and 46233 transitions. [2023-12-02 18:45:36,959 INFO L78 Accepts]: Start accepts. Automaton has 36212 states and 46233 transitions. Word has length 141 [2023-12-02 18:45:36,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:45:36,959 INFO L495 AbstractCegarLoop]: Abstraction has 36212 states and 46233 transitions. [2023-12-02 18:45:36,959 INFO L496 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, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 18:45:36,959 INFO L276 IsEmpty]: Start isEmpty. Operand 36212 states and 46233 transitions. [2023-12-02 18:45:36,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 18:45:36,978 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:45:36,978 INFO L195 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, 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] [2023-12-02 18:45:36,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 18:45:37,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-02 18:45:37,179 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:45:37,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:45:37,179 INFO L85 PathProgramCache]: Analyzing trace with hash -466020035, now seen corresponding path program 1 times [2023-12-02 18:45:37,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:45:37,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118702491] [2023-12-02 18:45:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:37,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:45:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 51 proven. 20 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 18:45:37,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:45:37,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118702491] [2023-12-02 18:45:37,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118702491] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:45:37,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174041457] [2023-12-02 18:45:37,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:37,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:45:37,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:45:37,343 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:45:37,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 18:45:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:37,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 18:45:37,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:45:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:45:37,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:45:37,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174041457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:45:37,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:45:37,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2023-12-02 18:45:37,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773127979] [2023-12-02 18:45:37,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:45:37,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:45:37,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:45:37,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:45:37,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:45:37,531 INFO L87 Difference]: Start difference. First operand 36212 states and 46233 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 18:45:40,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:45:40,863 INFO L93 Difference]: Finished difference Result 67257 states and 85415 transitions. [2023-12-02 18:45:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:45:40,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 143 [2023-12-02 18:45:40,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:45:40,921 INFO L225 Difference]: With dead ends: 67257 [2023-12-02 18:45:40,921 INFO L226 Difference]: Without dead ends: 43910 [2023-12-02 18:45:40,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:45:40,938 INFO L413 NwaCegarLoop]: 3271 mSDtfsCounter, 242 mSDsluCounter, 9429 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 12700 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:45:40,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 12700 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 18:45:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43910 states. [2023-12-02 18:45:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43910 to 38617. [2023-12-02 18:45:43,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38617 states, 33664 states have (on average 1.2984790874524714) internal successors, (43712), 33704 states have internal predecessors, (43712), 2644 states have call successors, (2644), 2342 states have call predecessors, (2644), 2307 states have return successors, (2802), 2571 states have call predecessors, (2802), 2642 states have call successors, (2802) [2023-12-02 18:45:43,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38617 states to 38617 states and 49158 transitions. [2023-12-02 18:45:43,118 INFO L78 Accepts]: Start accepts. Automaton has 38617 states and 49158 transitions. Word has length 143 [2023-12-02 18:45:43,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:45:43,118 INFO L495 AbstractCegarLoop]: Abstraction has 38617 states and 49158 transitions. [2023-12-02 18:45:43,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 5 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-12-02 18:45:43,118 INFO L276 IsEmpty]: Start isEmpty. Operand 38617 states and 49158 transitions. [2023-12-02 18:45:43,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 18:45:43,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:45:43,138 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:45:43,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 18:45:43,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 18:45:43,339 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:45:43,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:45:43,339 INFO L85 PathProgramCache]: Analyzing trace with hash 547990232, now seen corresponding path program 1 times [2023-12-02 18:45:43,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:45:43,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406337344] [2023-12-02 18:45:43,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:43,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:45:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 32 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 18:45:43,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:45:43,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406337344] [2023-12-02 18:45:43,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406337344] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:45:43,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552904337] [2023-12-02 18:45:43,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:45:43,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:45:43,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:45:43,535 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:45:43,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 18:45:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:45:43,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 18:45:43,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:45:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 68 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 18:45:43,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:45:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-12-02 18:45:44,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552904337] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:45:44,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [433741416] [2023-12-02 18:45:44,370 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2023-12-02 18:45:44,371 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:45:44,371 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:45:44,371 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:45:44,371 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:45:52,551 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 18:45:52,552 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 142 for LOIs [2023-12-02 18:45:52,686 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 155 for LOIs [2023-12-02 18:45:52,903 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 18:45:52,904 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 18:45:52,915 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 18:45:52,982 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 14 for LOIs [2023-12-02 18:45:53,111 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:46:02,936 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '985646#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 18:46:02,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:46:02,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:46:02,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 17 [2023-12-02 18:46:02,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906156890] [2023-12-02 18:46:02,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:46:02,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 18:46:02,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:46:02,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 18:46:02,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=529, Invalid=5951, Unknown=0, NotChecked=0, Total=6480 [2023-12-02 18:46:02,941 INFO L87 Difference]: Start difference. First operand 38617 states and 49158 transitions. Second operand has 17 states, 14 states have (on average 11.857142857142858) internal successors, (166), 15 states have internal predecessors, (166), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2023-12-02 18:46:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:46:16,477 INFO L93 Difference]: Finished difference Result 113478 states and 146935 transitions. [2023-12-02 18:46:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2023-12-02 18:46:16,477 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 11.857142857142858) internal successors, (166), 15 states have internal predecessors, (166), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 140 [2023-12-02 18:46:16,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:46:16,607 INFO L225 Difference]: With dead ends: 113478 [2023-12-02 18:46:16,607 INFO L226 Difference]: Without dead ends: 80656 [2023-12-02 18:46:16,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 473 SyntacticMatches, 2 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37174 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=6635, Invalid=78337, Unknown=0, NotChecked=0, Total=84972 [2023-12-02 18:46:16,639 INFO L413 NwaCegarLoop]: 3990 mSDtfsCounter, 16386 mSDsluCounter, 20964 mSDsCounter, 0 mSdLazyCounter, 5131 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16400 SdHoareTripleChecker+Valid, 24954 SdHoareTripleChecker+Invalid, 5694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 5131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:46:16,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16400 Valid, 24954 Invalid, 5694 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [563 Valid, 5131 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-02 18:46:16,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80656 states. [2023-12-02 18:46:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80656 to 34313. [2023-12-02 18:46:19,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34313 states, 30170 states have (on average 1.3012263838249918) internal successors, (39258), 30214 states have internal predecessors, (39258), 2152 states have call successors, (2152), 2014 states have call predecessors, (2152), 1989 states have return successors, (2280), 2085 states have call predecessors, (2280), 2150 states have call successors, (2280) [2023-12-02 18:46:19,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34313 states to 34313 states and 43690 transitions. [2023-12-02 18:46:19,255 INFO L78 Accepts]: Start accepts. Automaton has 34313 states and 43690 transitions. Word has length 140 [2023-12-02 18:46:19,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:46:19,255 INFO L495 AbstractCegarLoop]: Abstraction has 34313 states and 43690 transitions. [2023-12-02 18:46:19,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 11.857142857142858) internal successors, (166), 15 states have internal predecessors, (166), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2023-12-02 18:46:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 34313 states and 43690 transitions. [2023-12-02 18:46:19,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 18:46:19,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:46:19,269 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:46:19,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 18:46:19,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 18:46:19,470 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:46:19,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:46:19,470 INFO L85 PathProgramCache]: Analyzing trace with hash 697487183, now seen corresponding path program 1 times [2023-12-02 18:46:19,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:46:19,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4246439] [2023-12-02 18:46:19,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:46:19,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:46:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:46:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 18:46:19,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:46:19,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4246439] [2023-12-02 18:46:19,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4246439] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:46:19,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104450782] [2023-12-02 18:46:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:46:19,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:46:19,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:46:19,652 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:46:19,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 18:46:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:46:19,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 18:46:19,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:46:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 66 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 18:46:19,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:46:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 18:46:20,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104450782] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:46:20,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [357069224] [2023-12-02 18:46:20,524 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2023-12-02 18:46:20,524 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:46:20,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:46:20,525 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:46:20,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:46:30,603 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 18:46:30,604 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 142 for LOIs [2023-12-02 18:46:30,782 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 155 for LOIs [2023-12-02 18:46:31,027 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 18:46:31,028 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 18:46:31,039 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 18:46:31,192 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 14 for LOIs [2023-12-02 18:46:31,294 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:46:43,897 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1166222#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 18:46:43,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:46:43,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:46:43,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 6] total 18 [2023-12-02 18:46:43,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526175234] [2023-12-02 18:46:43,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:46:43,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 18:46:43,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:46:43,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 18:46:43,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=524, Invalid=6616, Unknown=0, NotChecked=0, Total=7140 [2023-12-02 18:46:43,900 INFO L87 Difference]: Start difference. First operand 34313 states and 43690 transitions. Second operand has 18 states, 15 states have (on average 11.266666666666667) internal successors, (169), 16 states have internal predecessors, (169), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2023-12-02 18:46:57,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:46:57,267 INFO L93 Difference]: Finished difference Result 92417 states and 119369 transitions. [2023-12-02 18:46:57,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2023-12-02 18:46:57,267 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 11.266666666666667) internal successors, (169), 16 states have internal predecessors, (169), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 142 [2023-12-02 18:46:57,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:46:57,380 INFO L225 Difference]: With dead ends: 92417 [2023-12-02 18:46:57,380 INFO L226 Difference]: Without dead ends: 67283 [2023-12-02 18:46:57,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30612 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=4918, Invalid=66104, Unknown=0, NotChecked=0, Total=71022 [2023-12-02 18:46:57,406 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 19122 mSDsluCounter, 23146 mSDsCounter, 0 mSdLazyCounter, 4678 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19132 SdHoareTripleChecker+Valid, 26939 SdHoareTripleChecker+Invalid, 5153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 4678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:46:57,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19132 Valid, 26939 Invalid, 5153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [475 Valid, 4678 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 18:46:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67283 states. [2023-12-02 18:46:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67283 to 29676. [2023-12-02 18:46:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29676 states, 26183 states have (on average 1.308711759538632) internal successors, (34266), 26233 states have internal predecessors, (34266), 1794 states have call successors, (1794), 1718 states have call predecessors, (1794), 1697 states have return successors, (1910), 1725 states have call predecessors, (1910), 1792 states have call successors, (1910) [2023-12-02 18:46:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29676 states to 29676 states and 37970 transitions. [2023-12-02 18:46:59,903 INFO L78 Accepts]: Start accepts. Automaton has 29676 states and 37970 transitions. Word has length 142 [2023-12-02 18:46:59,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:46:59,903 INFO L495 AbstractCegarLoop]: Abstraction has 29676 states and 37970 transitions. [2023-12-02 18:46:59,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 11.266666666666667) internal successors, (169), 16 states have internal predecessors, (169), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2023-12-02 18:46:59,903 INFO L276 IsEmpty]: Start isEmpty. Operand 29676 states and 37970 transitions. [2023-12-02 18:46:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 18:46:59,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:46:59,914 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 18:46:59,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-02 18:47:00,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-02 18:47:00,115 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:47:00,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:47:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1037709380, now seen corresponding path program 1 times [2023-12-02 18:47:00,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:47:00,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770315468] [2023-12-02 18:47:00,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:00,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:47:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 18:47:00,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:47:00,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770315468] [2023-12-02 18:47:00,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770315468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:47:00,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959499698] [2023-12-02 18:47:00,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:00,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:47:00,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:47:00,225 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:47:00,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 18:47:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:00,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 18:47:00,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:47:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-02 18:47:00,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:47:00,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959499698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:47:00,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:47:00,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2023-12-02 18:47:00,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487186698] [2023-12-02 18:47:00,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:47:00,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:47:00,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:47:00,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:47:00,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-02 18:47:00,388 INFO L87 Difference]: Start difference. First operand 29676 states and 37970 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 18:47:02,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:47:02,977 INFO L93 Difference]: Finished difference Result 59325 states and 75110 transitions. [2023-12-02 18:47:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:47:02,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 141 [2023-12-02 18:47:02,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:47:03,025 INFO L225 Difference]: With dead ends: 59325 [2023-12-02 18:47:03,025 INFO L226 Difference]: Without dead ends: 34202 [2023-12-02 18:47:03,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:47:03,046 INFO L413 NwaCegarLoop]: 3253 mSDtfsCounter, 3396 mSDsluCounter, 3371 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3396 SdHoareTripleChecker+Valid, 6624 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:47:03,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3396 Valid, 6624 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:47:03,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34202 states. [2023-12-02 18:47:05,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34202 to 32744. [2023-12-02 18:47:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32744 states, 28785 states have (on average 1.3042209484106306) internal successors, (37542), 28891 states have internal predecessors, (37542), 1988 states have call successors, (1988), 1880 states have call predecessors, (1988), 1969 states have return successors, (2458), 1973 states have call predecessors, (2458), 1986 states have call successors, (2458) [2023-12-02 18:47:05,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32744 states to 32744 states and 41988 transitions. [2023-12-02 18:47:05,381 INFO L78 Accepts]: Start accepts. Automaton has 32744 states and 41988 transitions. Word has length 141 [2023-12-02 18:47:05,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:47:05,381 INFO L495 AbstractCegarLoop]: Abstraction has 32744 states and 41988 transitions. [2023-12-02 18:47:05,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 18:47:05,381 INFO L276 IsEmpty]: Start isEmpty. Operand 32744 states and 41988 transitions. [2023-12-02 18:47:05,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 18:47:05,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:47:05,394 INFO L195 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, 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] [2023-12-02 18:47:05,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 18:47:05,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 18:47:05,595 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:47:05,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:47:05,595 INFO L85 PathProgramCache]: Analyzing trace with hash 642963334, now seen corresponding path program 1 times [2023-12-02 18:47:05,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:47:05,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220193965] [2023-12-02 18:47:05,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:05,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:47:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-02 18:47:05,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:47:05,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220193965] [2023-12-02 18:47:05,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220193965] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:47:05,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972180926] [2023-12-02 18:47:05,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:05,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:47:05,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:47:05,638 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:47:05,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 18:47:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:05,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:47:05,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:47:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:47:05,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:47:05,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972180926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:47:05,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:47:05,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-12-02 18:47:05,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969985299] [2023-12-02 18:47:05,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:47:05,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:47:05,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:47:05,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:47:05,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:47:05,787 INFO L87 Difference]: Start difference. First operand 32744 states and 41988 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:47:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:47:08,251 INFO L93 Difference]: Finished difference Result 59563 states and 76570 transitions. [2023-12-02 18:47:08,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:47:08,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 141 [2023-12-02 18:47:08,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:47:08,305 INFO L225 Difference]: With dead ends: 59563 [2023-12-02 18:47:08,305 INFO L226 Difference]: Without dead ends: 31366 [2023-12-02 18:47:08,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:47:08,327 INFO L413 NwaCegarLoop]: 3267 mSDtfsCounter, 112 mSDsluCounter, 3167 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 6434 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:47:08,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 6434 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:47:08,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31366 states. [2023-12-02 18:47:10,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31366 to 30906. [2023-12-02 18:47:10,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30906 states, 27095 states have (on average 1.2793135264809006) internal successors, (34663), 27201 states have internal predecessors, (34663), 1914 states have call successors, (1914), 1806 states have call predecessors, (1914), 1895 states have return successors, (2384), 1899 states have call predecessors, (2384), 1912 states have call successors, (2384) [2023-12-02 18:47:10,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30906 states to 30906 states and 38961 transitions. [2023-12-02 18:47:10,531 INFO L78 Accepts]: Start accepts. Automaton has 30906 states and 38961 transitions. Word has length 141 [2023-12-02 18:47:10,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:47:10,531 INFO L495 AbstractCegarLoop]: Abstraction has 30906 states and 38961 transitions. [2023-12-02 18:47:10,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:47:10,531 INFO L276 IsEmpty]: Start isEmpty. Operand 30906 states and 38961 transitions. [2023-12-02 18:47:10,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 18:47:10,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:47:10,542 INFO L195 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, 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] [2023-12-02 18:47:10,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-02 18:47:10,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 18:47:10,743 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:47:10,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:47:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash 894041523, now seen corresponding path program 1 times [2023-12-02 18:47:10,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:47:10,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82122984] [2023-12-02 18:47:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:10,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:47:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 44 proven. 17 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 18:47:10,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:47:10,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82122984] [2023-12-02 18:47:10,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82122984] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:47:10,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786686357] [2023-12-02 18:47:10,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:10,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:47:10,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:47:10,840 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:47:10,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 18:47:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:10,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:47:10,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:47:11,010 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-02 18:47:11,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:47:11,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786686357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:47:11,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:47:11,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-12-02 18:47:11,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090606215] [2023-12-02 18:47:11,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:47:11,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:47:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:47:11,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:47:11,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:47:11,012 INFO L87 Difference]: Start difference. First operand 30906 states and 38961 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 18:47:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:47:13,464 INFO L93 Difference]: Finished difference Result 56197 states and 70930 transitions. [2023-12-02 18:47:13,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:47:13,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 141 [2023-12-02 18:47:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:47:13,509 INFO L225 Difference]: With dead ends: 56197 [2023-12-02 18:47:13,510 INFO L226 Difference]: Without dead ends: 32291 [2023-12-02 18:47:13,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:47:13,528 INFO L413 NwaCegarLoop]: 3202 mSDtfsCounter, 3368 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3368 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:47:13,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3368 Valid, 3238 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:47:13,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32291 states. [2023-12-02 18:47:15,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32291 to 32045. [2023-12-02 18:47:15,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32045 states, 28102 states have (on average 1.2655327022987688) internal successors, (35564), 28224 states have internal predecessors, (35564), 1946 states have call successors, (1946), 1878 states have call predecessors, (1946), 1995 states have return successors, (2567), 1943 states have call predecessors, (2567), 1944 states have call successors, (2567) [2023-12-02 18:47:15,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32045 states to 32045 states and 40077 transitions. [2023-12-02 18:47:15,897 INFO L78 Accepts]: Start accepts. Automaton has 32045 states and 40077 transitions. Word has length 141 [2023-12-02 18:47:15,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:47:15,897 INFO L495 AbstractCegarLoop]: Abstraction has 32045 states and 40077 transitions. [2023-12-02 18:47:15,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 18:47:15,897 INFO L276 IsEmpty]: Start isEmpty. Operand 32045 states and 40077 transitions. [2023-12-02 18:47:15,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 18:47:15,910 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:47:15,910 INFO L195 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, 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] [2023-12-02 18:47:15,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 18:47:16,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-02 18:47:16,111 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:47:16,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:47:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash -26141276, now seen corresponding path program 1 times [2023-12-02 18:47:16,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:47:16,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054690198] [2023-12-02 18:47:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:16,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:47:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 40 proven. 11 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-02 18:47:16,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:47:16,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054690198] [2023-12-02 18:47:16,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054690198] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:47:16,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448458475] [2023-12-02 18:47:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:16,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:47:16,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:47:16,152 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:47:16,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 18:47:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:16,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:47:16,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:47:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 18:47:16,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:47:16,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448458475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:47:16,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:47:16,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2023-12-02 18:47:16,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261651841] [2023-12-02 18:47:16,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:47:16,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:47:16,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:47:16,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:47:16,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:47:16,299 INFO L87 Difference]: Start difference. First operand 32045 states and 40077 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:47:18,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:47:18,754 INFO L93 Difference]: Finished difference Result 55818 states and 70216 transitions. [2023-12-02 18:47:18,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:47:18,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 138 [2023-12-02 18:47:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:47:18,796 INFO L225 Difference]: With dead ends: 55818 [2023-12-02 18:47:18,796 INFO L226 Difference]: Without dead ends: 30823 [2023-12-02 18:47:18,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:47:18,816 INFO L413 NwaCegarLoop]: 3270 mSDtfsCounter, 109 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:47:18,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 6441 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:47:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30823 states. [2023-12-02 18:47:20,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30823 to 30435. [2023-12-02 18:47:20,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30435 states, 26636 states have (on average 1.2393001952245082) internal successors, (33010), 26758 states have internal predecessors, (33010), 1874 states have call successors, (1874), 1806 states have call predecessors, (1874), 1923 states have return successors, (2495), 1871 states have call predecessors, (2495), 1872 states have call successors, (2495) [2023-12-02 18:47:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30435 states to 30435 states and 37379 transitions. [2023-12-02 18:47:20,936 INFO L78 Accepts]: Start accepts. Automaton has 30435 states and 37379 transitions. Word has length 138 [2023-12-02 18:47:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:47:20,937 INFO L495 AbstractCegarLoop]: Abstraction has 30435 states and 37379 transitions. [2023-12-02 18:47:20,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-02 18:47:20,937 INFO L276 IsEmpty]: Start isEmpty. Operand 30435 states and 37379 transitions. [2023-12-02 18:47:20,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 18:47:20,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:47:20,947 INFO L195 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, 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] [2023-12-02 18:47:20,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 18:47:21,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 18:47:21,148 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:47:21,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:47:21,148 INFO L85 PathProgramCache]: Analyzing trace with hash 974255605, now seen corresponding path program 1 times [2023-12-02 18:47:21,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:47:21,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414910865] [2023-12-02 18:47:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:21,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:47:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 33 proven. 7 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-02 18:47:21,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:47:21,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414910865] [2023-12-02 18:47:21,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414910865] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:47:21,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250649774] [2023-12-02 18:47:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:21,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:47:21,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:47:21,545 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:47:21,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 18:47:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:21,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 18:47:21,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:47:21,811 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 18:47:21,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:47:21,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250649774] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:47:21,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:47:21,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2023-12-02 18:47:21,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814489612] [2023-12-02 18:47:21,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:47:21,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:47:21,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:47:21,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:47:21,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-12-02 18:47:21,813 INFO L87 Difference]: Start difference. First operand 30435 states and 37379 transitions. Second operand has 6 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 18:47:24,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:47:24,442 INFO L93 Difference]: Finished difference Result 53770 states and 65503 transitions. [2023-12-02 18:47:24,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:47:24,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 138 [2023-12-02 18:47:24,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:47:24,483 INFO L225 Difference]: With dead ends: 53770 [2023-12-02 18:47:24,483 INFO L226 Difference]: Without dead ends: 28157 [2023-12-02 18:47:24,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-12-02 18:47:24,509 INFO L413 NwaCegarLoop]: 3137 mSDtfsCounter, 3489 mSDsluCounter, 3115 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3499 SdHoareTripleChecker+Valid, 6252 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:47:24,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3499 Valid, 6252 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 18:47:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28157 states. [2023-12-02 18:47:26,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28157 to 26394. [2023-12-02 18:47:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26394 states, 23191 states have (on average 1.2365572851537234) internal successors, (28677), 23266 states have internal predecessors, (28677), 1584 states have call successors, (1584), 1560 states have call predecessors, (1584), 1617 states have return successors, (1772), 1568 states have call predecessors, (1772), 1582 states have call successors, (1772) [2023-12-02 18:47:26,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26394 states to 26394 states and 32033 transitions. [2023-12-02 18:47:26,522 INFO L78 Accepts]: Start accepts. Automaton has 26394 states and 32033 transitions. Word has length 138 [2023-12-02 18:47:26,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:47:26,522 INFO L495 AbstractCegarLoop]: Abstraction has 26394 states and 32033 transitions. [2023-12-02 18:47:26,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-02 18:47:26,523 INFO L276 IsEmpty]: Start isEmpty. Operand 26394 states and 32033 transitions. [2023-12-02 18:47:26,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 18:47:26,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:47:26,532 INFO L195 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, 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] [2023-12-02 18:47:26,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 18:47:26,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 18:47:26,732 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:47:26,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:47:26,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1738330055, now seen corresponding path program 1 times [2023-12-02 18:47:26,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:47:26,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162559768] [2023-12-02 18:47:26,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:26,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:47:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 54 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-12-02 18:47:26,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:47:26,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162559768] [2023-12-02 18:47:26,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162559768] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:47:26,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180440584] [2023-12-02 18:47:26,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:26,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:47:26,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:47:26,840 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:47:26,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 18:47:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:26,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:47:26,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:47:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 18:47:27,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:47:27,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180440584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:47:27,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:47:27,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2023-12-02 18:47:27,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193957130] [2023-12-02 18:47:27,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:47:27,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:47:27,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:47:27,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:47:27,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:47:27,074 INFO L87 Difference]: Start difference. First operand 26394 states and 32033 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 18:47:30,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:47:30,142 INFO L93 Difference]: Finished difference Result 52668 states and 63348 transitions. [2023-12-02 18:47:30,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:47:30,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 139 [2023-12-02 18:47:30,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:47:30,197 INFO L225 Difference]: With dead ends: 52668 [2023-12-02 18:47:30,197 INFO L226 Difference]: Without dead ends: 36191 [2023-12-02 18:47:30,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:47:30,219 INFO L413 NwaCegarLoop]: 3263 mSDtfsCounter, 6744 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6744 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:47:30,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6744 Valid, 3381 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:47:30,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36191 states. [2023-12-02 18:47:32,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36191 to 34254. [2023-12-02 18:47:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34254 states, 30003 states have (on average 1.2168116521681165) internal successors, (36508), 30118 states have internal predecessors, (36508), 2057 states have call successors, (2057), 2035 states have call predecessors, (2057), 2192 states have return successors, (2347), 2101 states have call predecessors, (2347), 2055 states have call successors, (2347) [2023-12-02 18:47:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34254 states to 34254 states and 40912 transitions. [2023-12-02 18:47:33,012 INFO L78 Accepts]: Start accepts. Automaton has 34254 states and 40912 transitions. Word has length 139 [2023-12-02 18:47:33,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:47:33,013 INFO L495 AbstractCegarLoop]: Abstraction has 34254 states and 40912 transitions. [2023-12-02 18:47:33,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-02 18:47:33,013 INFO L276 IsEmpty]: Start isEmpty. Operand 34254 states and 40912 transitions. [2023-12-02 18:47:33,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 18:47:33,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:47:33,022 INFO L195 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, 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] [2023-12-02 18:47:33,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 18:47:33,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:47:33,222 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:47:33,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:47:33,222 INFO L85 PathProgramCache]: Analyzing trace with hash -79391187, now seen corresponding path program 1 times [2023-12-02 18:47:33,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:47:33,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411230891] [2023-12-02 18:47:33,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:33,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:47:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 18:47:33,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:47:33,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411230891] [2023-12-02 18:47:33,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411230891] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:47:33,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:47:33,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:47:33,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408280048] [2023-12-02 18:47:33,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:47:33,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:47:33,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:47:33,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:47:33,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:47:33,356 INFO L87 Difference]: Start difference. First operand 34254 states and 40912 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 18:47:37,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:47:37,120 INFO L93 Difference]: Finished difference Result 61212 states and 71803 transitions. [2023-12-02 18:47:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:47:37,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 140 [2023-12-02 18:47:37,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:47:37,167 INFO L225 Difference]: With dead ends: 61212 [2023-12-02 18:47:37,167 INFO L226 Difference]: Without dead ends: 36716 [2023-12-02 18:47:37,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:47:37,184 INFO L413 NwaCegarLoop]: 3245 mSDtfsCounter, 102 mSDsluCounter, 6371 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 9616 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:47:37,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 9616 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 18:47:37,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36716 states. [2023-12-02 18:47:39,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36716 to 33936. [2023-12-02 18:47:39,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33936 states, 29662 states have (on average 1.2005933517631988) internal successors, (35612), 29792 states have internal predecessors, (35612), 2049 states have call successors, (2049), 2019 states have call predecessors, (2049), 2223 states have return successors, (2483), 2125 states have call predecessors, (2483), 2047 states have call successors, (2483) [2023-12-02 18:47:39,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33936 states to 33936 states and 40144 transitions. [2023-12-02 18:47:39,974 INFO L78 Accepts]: Start accepts. Automaton has 33936 states and 40144 transitions. Word has length 140 [2023-12-02 18:47:39,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:47:39,975 INFO L495 AbstractCegarLoop]: Abstraction has 33936 states and 40144 transitions. [2023-12-02 18:47:39,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-12-02 18:47:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 33936 states and 40144 transitions. [2023-12-02 18:47:39,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-02 18:47:39,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:47:39,983 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:47:39,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-02 18:47:39,984 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:47:39,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:47:39,984 INFO L85 PathProgramCache]: Analyzing trace with hash 422162949, now seen corresponding path program 1 times [2023-12-02 18:47:39,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:47:39,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302599008] [2023-12-02 18:47:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:39,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:47:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-02 18:47:40,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:47:40,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302599008] [2023-12-02 18:47:40,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302599008] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:47:40,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156954054] [2023-12-02 18:47:40,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:47:40,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:47:40,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:47:40,172 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:47:40,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-02 18:47:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:47:40,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 18:47:40,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:47:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 66 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 18:47:40,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:47:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-02 18:47:41,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156954054] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:47:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1038477373] [2023-12-02 18:47:41,114 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2023-12-02 18:47:41,114 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:47:41,115 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:47:41,115 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:47:41,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:47:49,866 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 18:47:49,867 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 142 for LOIs [2023-12-02 18:47:49,996 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 155 for LOIs [2023-12-02 18:47:50,195 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 18:47:50,195 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 18:47:50,205 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 18:47:50,259 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 14 for LOIs [2023-12-02 18:47:50,372 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:48:00,990 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2047020#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 18:48:00,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:48:00,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:48:00,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 6] total 19 [2023-12-02 18:48:00,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328395854] [2023-12-02 18:48:00,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:48:00,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 18:48:00,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:48:00,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 18:48:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=7285, Unknown=0, NotChecked=0, Total=7832 [2023-12-02 18:48:00,993 INFO L87 Difference]: Start difference. First operand 33936 states and 40144 transitions. Second operand has 19 states, 16 states have (on average 10.8125) internal successors, (173), 17 states have internal predecessors, (173), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2023-12-02 18:48:12,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:48:12,544 INFO L93 Difference]: Finished difference Result 64342 states and 77388 transitions. [2023-12-02 18:48:12,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2023-12-02 18:48:12,545 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 10.8125) internal successors, (173), 17 states have internal predecessors, (173), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) Word has length 145 [2023-12-02 18:48:12,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:48:12,604 INFO L225 Difference]: With dead ends: 64342 [2023-12-02 18:48:12,604 INFO L226 Difference]: Without dead ends: 44121 [2023-12-02 18:48:12,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 452 SyntacticMatches, 2 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36653 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=5272, Invalid=77960, Unknown=0, NotChecked=0, Total=83232 [2023-12-02 18:48:12,622 INFO L413 NwaCegarLoop]: 3731 mSDtfsCounter, 12471 mSDsluCounter, 23420 mSDsCounter, 0 mSdLazyCounter, 5254 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12480 SdHoareTripleChecker+Valid, 27151 SdHoareTripleChecker+Invalid, 5663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 5254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:48:12,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12480 Valid, 27151 Invalid, 5663 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [409 Valid, 5254 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 18:48:12,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44121 states. [2023-12-02 18:48:15,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44121 to 28361. [2023-12-02 18:48:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28361 states, 24804 states have (on average 1.207426221577165) internal successors, (29949), 24917 states have internal predecessors, (29949), 1697 states have call successors, (1697), 1679 states have call predecessors, (1697), 1858 states have return successors, (2086), 1765 states have call predecessors, (2086), 1695 states have call successors, (2086) [2023-12-02 18:48:15,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28361 states to 28361 states and 33732 transitions. [2023-12-02 18:48:15,228 INFO L78 Accepts]: Start accepts. Automaton has 28361 states and 33732 transitions. Word has length 145 [2023-12-02 18:48:15,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:48:15,228 INFO L495 AbstractCegarLoop]: Abstraction has 28361 states and 33732 transitions. [2023-12-02 18:48:15,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 10.8125) internal successors, (173), 17 states have internal predecessors, (173), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (30), 6 states have call predecessors, (30), 7 states have call successors, (30) [2023-12-02 18:48:15,228 INFO L276 IsEmpty]: Start isEmpty. Operand 28361 states and 33732 transitions. [2023-12-02 18:48:15,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-02 18:48:15,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:48:15,236 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:48:15,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-12-02 18:48:15,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:48:15,437 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:48:15,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:48:15,437 INFO L85 PathProgramCache]: Analyzing trace with hash 554452604, now seen corresponding path program 1 times [2023-12-02 18:48:15,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:48:15,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979294739] [2023-12-02 18:48:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:48:15,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:48:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:48:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-12-02 18:48:16,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:48:16,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979294739] [2023-12-02 18:48:16,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979294739] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:48:16,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577503269] [2023-12-02 18:48:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:48:16,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:48:16,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:48:16,117 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:48:16,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 18:48:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:48:16,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 18:48:16,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:48:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-02 18:48:16,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:48:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 33 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-02 18:48:17,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577503269] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:48:17,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [212851154] [2023-12-02 18:48:17,254 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2023-12-02 18:48:17,254 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:48:17,254 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:48:17,255 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:48:17,255 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:48:45,090 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 18:48:45,092 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 1 for LOIs [2023-12-02 18:48:45,097 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 1 for LOIs [2023-12-02 18:48:45,102 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 18:48:45,103 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 18:48:45,112 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 18:48:45,304 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 1 for LOIs [2023-12-02 18:48:45,422 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:49:06,400 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2157869#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 18:49:06,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:49:06,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:49:06,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 12] total 36 [2023-12-02 18:49:06,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934529943] [2023-12-02 18:49:06,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:49:06,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-02 18:49:06,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:49:06,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-02 18:49:06,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=644, Invalid=11128, Unknown=0, NotChecked=0, Total=11772 [2023-12-02 18:49:06,404 INFO L87 Difference]: Start difference. First operand 28361 states and 33732 transitions. Second operand has 36 states, 24 states have (on average 10.291666666666666) internal successors, (247), 27 states have internal predecessors, (247), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-02 18:49:20,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:49:20,422 INFO L93 Difference]: Finished difference Result 86084 states and 100662 transitions. [2023-12-02 18:49:20,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-02 18:49:20,422 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 24 states have (on average 10.291666666666666) internal successors, (247), 27 states have internal predecessors, (247), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) Word has length 147 [2023-12-02 18:49:20,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:49:20,535 INFO L225 Difference]: With dead ends: 86084 [2023-12-02 18:49:20,536 INFO L226 Difference]: Without dead ends: 70818 [2023-12-02 18:49:20,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12876 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=3163, Invalid=32747, Unknown=0, NotChecked=0, Total=35910 [2023-12-02 18:49:20,561 INFO L413 NwaCegarLoop]: 3166 mSDtfsCounter, 26468 mSDsluCounter, 34928 mSDsCounter, 0 mSdLazyCounter, 5322 mSolverCounterSat, 1868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26468 SdHoareTripleChecker+Valid, 38094 SdHoareTripleChecker+Invalid, 7190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1868 IncrementalHoareTripleChecker+Valid, 5322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:49:20,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26468 Valid, 38094 Invalid, 7190 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1868 Valid, 5322 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 18:49:20,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70818 states. [2023-12-02 18:49:23,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70818 to 26241. [2023-12-02 18:49:23,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26241 states, 22928 states have (on average 1.2129710397766922) internal successors, (27811), 23030 states have internal predecessors, (27811), 1581 states have call successors, (1581), 1560 states have call predecessors, (1581), 1730 states have return successors, (1839), 1651 states have call predecessors, (1839), 1579 states have call successors, (1839) [2023-12-02 18:49:23,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26241 states to 26241 states and 31231 transitions. [2023-12-02 18:49:23,569 INFO L78 Accepts]: Start accepts. Automaton has 26241 states and 31231 transitions. Word has length 147 [2023-12-02 18:49:23,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:49:23,569 INFO L495 AbstractCegarLoop]: Abstraction has 26241 states and 31231 transitions. [2023-12-02 18:49:23,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 24 states have (on average 10.291666666666666) internal successors, (247), 27 states have internal predecessors, (247), 14 states have call successors, (41), 11 states have call predecessors, (41), 18 states have return successors, (40), 14 states have call predecessors, (40), 14 states have call successors, (40) [2023-12-02 18:49:23,569 INFO L276 IsEmpty]: Start isEmpty. Operand 26241 states and 31231 transitions. [2023-12-02 18:49:23,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-02 18:49:23,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:49:23,575 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:49:23,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-02 18:49:23,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:49:23,776 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:49:23,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:49:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2046283922, now seen corresponding path program 1 times [2023-12-02 18:49:23,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:49:23,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652785660] [2023-12-02 18:49:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:49:23,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:49:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:49:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 18:49:24,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:49:24,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652785660] [2023-12-02 18:49:24,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652785660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:49:24,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191181037] [2023-12-02 18:49:24,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:49:24,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:49:24,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:49:24,321 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:49:24,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 18:49:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:49:24,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 18:49:24,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:49:24,693 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-02 18:49:24,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:49:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 41 proven. 7 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-12-02 18:49:25,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191181037] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:49:25,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2128977699] [2023-12-02 18:49:25,204 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2023-12-02 18:49:25,204 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:49:25,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:49:25,205 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:49:25,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:49:49,211 INFO L197 IcfgInterpreter]: Interpreting procedure error with input of size 12 for LOIs [2023-12-02 18:49:49,212 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 1 for LOIs [2023-12-02 18:49:49,218 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 1 for LOIs [2023-12-02 18:49:49,225 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 1 for LOIs [2023-12-02 18:49:49,226 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 1 for LOIs [2023-12-02 18:49:49,235 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 33 for LOIs [2023-12-02 18:49:49,379 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 1 for LOIs [2023-12-02 18:49:49,496 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:50:06,306 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2290884#(and (not (= ~token~0 (+ ~local~0 4))) (= ~m_pc~0 1) (= ~m_st~0 1))' at error location [2023-12-02 18:50:06,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:50:06,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:50:06,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 12] total 33 [2023-12-02 18:50:06,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728042785] [2023-12-02 18:50:06,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:50:06,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 18:50:06,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:50:06,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 18:50:06,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=10514, Unknown=0, NotChecked=0, Total=11130 [2023-12-02 18:50:06,309 INFO L87 Difference]: Start difference. First operand 26241 states and 31231 transitions. Second operand has 33 states, 21 states have (on average 11.857142857142858) internal successors, (249), 26 states have internal predecessors, (249), 13 states have call successors, (40), 9 states have call predecessors, (40), 18 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) [2023-12-02 18:50:19,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:50:19,484 INFO L93 Difference]: Finished difference Result 74347 states and 87595 transitions. [2023-12-02 18:50:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-12-02 18:50:19,485 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 21 states have (on average 11.857142857142858) internal successors, (249), 26 states have internal predecessors, (249), 13 states have call successors, (40), 9 states have call predecessors, (40), 18 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) Word has length 149 [2023-12-02 18:50:19,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:50:19,570 INFO L225 Difference]: With dead ends: 74347 [2023-12-02 18:50:19,570 INFO L226 Difference]: Without dead ends: 58381 [2023-12-02 18:50:19,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11952 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=2681, Invalid=29899, Unknown=0, NotChecked=0, Total=32580 [2023-12-02 18:50:19,590 INFO L413 NwaCegarLoop]: 3178 mSDtfsCounter, 26176 mSDsluCounter, 29482 mSDsCounter, 0 mSdLazyCounter, 5804 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26183 SdHoareTripleChecker+Valid, 32660 SdHoareTripleChecker+Invalid, 6862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 5804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:50:19,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26183 Valid, 32660 Invalid, 6862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1058 Valid, 5804 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 18:50:19,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58381 states. [2023-12-02 18:50:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58381 to 25543. [2023-12-02 18:50:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25543 states, 22290 states have (on average 1.217900403768506) internal successors, (27147), 22382 states have internal predecessors, (27147), 1567 states have call successors, (1567), 1545 states have call predecessors, (1567), 1684 states have return successors, (1755), 1616 states have call predecessors, (1755), 1565 states have call successors, (1755) [2023-12-02 18:50:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25543 states to 25543 states and 30469 transitions. [2023-12-02 18:50:22,715 INFO L78 Accepts]: Start accepts. Automaton has 25543 states and 30469 transitions. Word has length 149 [2023-12-02 18:50:22,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:50:22,715 INFO L495 AbstractCegarLoop]: Abstraction has 25543 states and 30469 transitions. [2023-12-02 18:50:22,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 21 states have (on average 11.857142857142858) internal successors, (249), 26 states have internal predecessors, (249), 13 states have call successors, (40), 9 states have call predecessors, (40), 18 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) [2023-12-02 18:50:22,715 INFO L276 IsEmpty]: Start isEmpty. Operand 25543 states and 30469 transitions. [2023-12-02 18:50:22,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-02 18:50:22,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:50:22,723 INFO L195 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, 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] [2023-12-02 18:50:22,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-02 18:50:22,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:50:22,924 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:50:22,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:50:22,924 INFO L85 PathProgramCache]: Analyzing trace with hash 566523927, now seen corresponding path program 1 times [2023-12-02 18:50:22,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:50:22,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75460949] [2023-12-02 18:50:22,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:50:22,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:50:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:50:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 53 proven. 42 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-02 18:50:23,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:50:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75460949] [2023-12-02 18:50:23,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75460949] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:50:23,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837076525] [2023-12-02 18:50:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:50:23,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:50:23,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:50:23,078 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:50:23,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-02 18:50:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:50:23,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 18:50:23,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:50:23,272 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-12-02 18:50:23,272 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:50:23,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837076525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:50:23,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:50:23,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2023-12-02 18:50:23,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59547472] [2023-12-02 18:50:23,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:50:23,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:50:23,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:50:23,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:50:23,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:50:23,273 INFO L87 Difference]: Start difference. First operand 25543 states and 30469 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-02 18:50:26,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:50:26,282 INFO L93 Difference]: Finished difference Result 40911 states and 47917 transitions. [2023-12-02 18:50:26,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:50:26,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 171 [2023-12-02 18:50:26,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:50:26,308 INFO L225 Difference]: With dead ends: 40911 [2023-12-02 18:50:26,308 INFO L226 Difference]: Without dead ends: 19447 [2023-12-02 18:50:26,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:50:26,325 INFO L413 NwaCegarLoop]: 3235 mSDtfsCounter, 267 mSDsluCounter, 9411 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 12646 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:50:26,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 12646 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 18:50:26,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19447 states. [2023-12-02 18:50:28,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19447 to 17076. [2023-12-02 18:50:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17076 states, 14937 states have (on average 1.2183838789582915) internal successors, (18199), 15005 states have internal predecessors, (18199), 1025 states have call successors, (1025), 1003 states have call predecessors, (1025), 1112 states have return successors, (1167), 1068 states have call predecessors, (1167), 1023 states have call successors, (1167) [2023-12-02 18:50:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17076 states to 17076 states and 20391 transitions. [2023-12-02 18:50:28,350 INFO L78 Accepts]: Start accepts. Automaton has 17076 states and 20391 transitions. Word has length 171 [2023-12-02 18:50:28,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:50:28,351 INFO L495 AbstractCegarLoop]: Abstraction has 17076 states and 20391 transitions. [2023-12-02 18:50:28,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 5 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-12-02 18:50:28,351 INFO L276 IsEmpty]: Start isEmpty. Operand 17076 states and 20391 transitions. [2023-12-02 18:50:28,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-12-02 18:50:28,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:50:28,357 INFO L195 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, 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] [2023-12-02 18:50:28,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-02 18:50:28,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:50:28,557 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:50:28,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:50:28,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1553381430, now seen corresponding path program 1 times [2023-12-02 18:50:28,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:50:28,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674859939] [2023-12-02 18:50:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:50:28,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:50:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:50:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 55 proven. 66 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-02 18:50:28,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:50:28,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674859939] [2023-12-02 18:50:28,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674859939] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:50:28,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584430642] [2023-12-02 18:50:28,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:50:28,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:50:28,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:50:28,806 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:50:28,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 18:50:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:50:28,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 18:50:28,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:50:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 18:50:29,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:50:29,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584430642] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:50:29,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:50:29,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 6 [2023-12-02 18:50:29,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139098705] [2023-12-02 18:50:29,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:50:29,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:50:29,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:50:29,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:50:29,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:50:29,018 INFO L87 Difference]: Start difference. First operand 17076 states and 20391 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-02 18:50:31,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:50:31,974 INFO L93 Difference]: Finished difference Result 30901 states and 35741 transitions. [2023-12-02 18:50:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:50:31,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 204 [2023-12-02 18:50:31,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:50:32,004 INFO L225 Difference]: With dead ends: 30901 [2023-12-02 18:50:32,004 INFO L226 Difference]: Without dead ends: 17268 [2023-12-02 18:50:32,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:50:32,018 INFO L413 NwaCegarLoop]: 3227 mSDtfsCounter, 274 mSDsluCounter, 12553 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 15780 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 18:50:32,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 15780 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 18:50:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17268 states. [2023-12-02 18:50:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17268 to 16028. [2023-12-02 18:50:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16028 states, 13973 states have (on average 1.215415444070708) internal successors, (16983), 14051 states have internal predecessors, (16983), 994 states have call successors, (994), 956 states have call predecessors, (994), 1059 states have return successors, (1136), 1021 states have call predecessors, (1136), 992 states have call successors, (1136) [2023-12-02 18:50:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16028 states to 16028 states and 19113 transitions. [2023-12-02 18:50:34,000 INFO L78 Accepts]: Start accepts. Automaton has 16028 states and 19113 transitions. Word has length 204 [2023-12-02 18:50:34,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:50:34,000 INFO L495 AbstractCegarLoop]: Abstraction has 16028 states and 19113 transitions. [2023-12-02 18:50:34,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-02 18:50:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 16028 states and 19113 transitions. [2023-12-02 18:50:34,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-12-02 18:50:34,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:50:34,007 INFO L195 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, 1] [2023-12-02 18:50:34,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-02 18:50:34,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-02 18:50:34,208 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:50:34,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:50:34,208 INFO L85 PathProgramCache]: Analyzing trace with hash 291379096, now seen corresponding path program 1 times [2023-12-02 18:50:34,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:50:34,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003300523] [2023-12-02 18:50:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:50:34,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:50:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:50:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-12-02 18:50:34,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:50:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003300523] [2023-12-02 18:50:34,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003300523] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:50:34,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:50:34,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 18:50:34,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79813999] [2023-12-02 18:50:34,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:50:34,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:50:34,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:50:34,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:50:34,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:50:34,444 INFO L87 Difference]: Start difference. First operand 16028 states and 19113 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-02 18:50:40,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:50:40,974 INFO L93 Difference]: Finished difference Result 43585 states and 49664 transitions. [2023-12-02 18:50:40,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 18:50:40,975 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), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 238 [2023-12-02 18:50:40,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:50:41,020 INFO L225 Difference]: With dead ends: 43585 [2023-12-02 18:50:41,020 INFO L226 Difference]: Without dead ends: 36562 [2023-12-02 18:50:41,028 INFO L412 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 [2023-12-02 18:50:41,028 INFO L413 NwaCegarLoop]: 3569 mSDtfsCounter, 3825 mSDsluCounter, 13736 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3825 SdHoareTripleChecker+Valid, 17305 SdHoareTripleChecker+Invalid, 2190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 18:50:41,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3825 Valid, 17305 Invalid, 2190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 18:50:41,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36562 states. [2023-12-02 18:50:45,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36562 to 28849. [2023-12-02 18:50:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28849 states, 24861 states have (on average 1.1745303889626322) internal successors, (29200), 25005 states have internal predecessors, (29200), 1918 states have call successors, (1918), 1829 states have call predecessors, (1918), 2068 states have return successors, (2214), 2015 states have call predecessors, (2214), 1916 states have call successors, (2214) [2023-12-02 18:50:45,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28849 states to 28849 states and 33332 transitions. [2023-12-02 18:50:45,083 INFO L78 Accepts]: Start accepts. Automaton has 28849 states and 33332 transitions. Word has length 238 [2023-12-02 18:50:45,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:50:45,084 INFO L495 AbstractCegarLoop]: Abstraction has 28849 states and 33332 transitions. [2023-12-02 18:50:45,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 7 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-02 18:50:45,084 INFO L276 IsEmpty]: Start isEmpty. Operand 28849 states and 33332 transitions. [2023-12-02 18:50:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-02 18:50:45,090 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:50:45,090 INFO L195 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, 1, 1, 1, 1] [2023-12-02 18:50:45,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-02 18:50:45,090 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 18:50:45,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:50:45,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1728714624, now seen corresponding path program 1 times [2023-12-02 18:50:45,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:50:45,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088119467] [2023-12-02 18:50:45,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:50:45,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:50:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:50:45,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 18:50:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:50:45,345 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 18:50:45,345 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 18:50:45,346 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 18:50:45,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 18:50:45,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-02 18:50:45,351 INFO L445 BasicCegarLoop]: Path program histogram: [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] [2023-12-02 18:50:45,355 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:50:45,471 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 18:50:45,476 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 18:50:45,506 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 18:50:45,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:50:45 BoogieIcfgContainer [2023-12-02 18:50:45,555 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:50:45,555 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:50:45,555 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:50:45,556 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:50:45,556 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:43:55" (3/4) ... [2023-12-02 18:50:45,557 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 18:50:45,612 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 18:50:45,614 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 18:50:45,639 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated [2023-12-02 18:50:45,778 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 18:50:45,778 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:50:45,778 INFO L158 Benchmark]: Toolchain (without parser) took 424325.09ms. Allocated memory was 146.8MB in the beginning and 3.9GB in the end (delta: 3.8GB). Free memory was 101.2MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2023-12-02 18:50:45,779 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory was 81.2MB in the beginning and 81.1MB in the end (delta: 73.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:50:45,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3437.54ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 101.2MB in the beginning and 64.0MB in the end (delta: 37.2MB). Peak memory consumption was 101.1MB. Max. memory is 16.1GB. [2023-12-02 18:50:45,779 INFO L158 Benchmark]: Boogie Procedure Inliner took 496.68ms. Allocated memory was 176.2MB in the beginning and 232.8MB in the end (delta: 56.6MB). Free memory was 64.0MB in the beginning and 102.6MB in the end (delta: -38.5MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. [2023-12-02 18:50:45,779 INFO L158 Benchmark]: Boogie Preprocessor took 394.30ms. Allocated memory was 232.8MB in the beginning and 356.5MB in the end (delta: 123.7MB). Free memory was 102.6MB in the beginning and 214.4MB in the end (delta: -111.9MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. [2023-12-02 18:50:45,780 INFO L158 Benchmark]: RCFGBuilder took 10102.89ms. Allocated memory was 356.5MB in the beginning and 901.8MB in the end (delta: 545.3MB). Free memory was 214.4MB in the beginning and 428.4MB in the end (delta: -213.9MB). Peak memory consumption was 544.2MB. Max. memory is 16.1GB. [2023-12-02 18:50:45,780 INFO L158 Benchmark]: TraceAbstraction took 409664.69ms. Allocated memory was 901.8MB in the beginning and 3.9GB in the end (delta: 3.0GB). Free memory was 427.3MB in the beginning and 1.6GB in the end (delta: -1.2GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-12-02 18:50:45,780 INFO L158 Benchmark]: Witness Printer took 222.48ms. Allocated memory is still 3.9GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-12-02 18:50:45,782 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory was 81.2MB in the beginning and 81.1MB in the end (delta: 73.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3437.54ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 101.2MB in the beginning and 64.0MB in the end (delta: 37.2MB). Peak memory consumption was 101.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 496.68ms. Allocated memory was 176.2MB in the beginning and 232.8MB in the end (delta: 56.6MB). Free memory was 64.0MB in the beginning and 102.6MB in the end (delta: -38.5MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 394.30ms. Allocated memory was 232.8MB in the beginning and 356.5MB in the end (delta: 123.7MB). Free memory was 102.6MB in the beginning and 214.4MB in the end (delta: -111.9MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. * RCFGBuilder took 10102.89ms. Allocated memory was 356.5MB in the beginning and 901.8MB in the end (delta: 545.3MB). Free memory was 214.4MB in the beginning and 428.4MB in the end (delta: -213.9MB). Peak memory consumption was 544.2MB. Max. memory is 16.1GB. * TraceAbstraction took 409664.69ms. Allocated memory was 901.8MB in the beginning and 3.9GB in the end (delta: 3.0GB). Free memory was 427.3MB in the beginning and 1.6GB in the end (delta: -1.2GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 222.48ms. Allocated memory is still 3.9GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 41.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret29 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11173]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L33] int d= 4; [L34] int c= 3; [L35] int e= 5; [L36] int a= 1; [L37] int f= 6; [L38] int b= 2; [L40] int a9 = 18; [L41] int a27 = 1; [L42] int a2 = 10; [L43] int a16 = 1; [L44] int a15 = 1; [L45] int a12 = 4; [L46] int a25 = 1; [L47] int a20 = 5; [L11177] int m_pc = 0; [L11178] int t1_pc = 0; [L11179] int t2_pc = 0; [L11180] int t3_pc = 0; [L11181] int t4_pc = 0; [L11182] int m_st ; [L11183] int t1_st ; [L11184] int t2_st ; [L11185] int t3_st ; [L11186] int t4_st ; [L11187] int m_i ; [L11188] int t1_i ; [L11189] int t2_i ; [L11190] int t3_i ; [L11191] int t4_i ; [L11192] int M_E = 2; [L11193] int T1_E = 2; [L11194] int T2_E = 2; [L11195] int T3_E = 2; [L11196] int T4_E = 2; [L11197] int E_M = 2; [L11198] int E_1 = 2; [L11199] int E_2 = 2; [L11200] int E_3 = 2; [L11201] int E_4 = 2; [L11208] int token ; [L11210] int local ; [L12026] COND FALSE !(__VERIFIER_nondet_int()) [L12029] CALL main2() [L12013] int __retres1 ; [L12017] CALL init_model() [L11925] m_i = 1 [L11926] t1_i = 1 [L11927] t2_i = 1 [L11928] t3_i = 1 [L11929] t4_i = 1 [L12017] RET init_model() [L12018] CALL start_simulation() [L11954] int kernel_st ; [L11955] int tmp ; [L11956] int tmp___0 ; [L11960] kernel_st = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11961] FCALL update_channels() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11962] CALL init_threads() [L11518] COND TRUE m_i == 1 [L11519] m_st = 0 [L11523] COND TRUE t1_i == 1 [L11524] t1_st = 0 [L11528] COND TRUE t2_i == 1 [L11529] t2_st = 0 [L11533] COND TRUE t3_i == 1 [L11534] t3_st = 0 [L11538] COND TRUE t4_i == 1 [L11539] t4_st = 0 [L11962] RET init_threads() [L11963] CALL fire_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_4)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, \old(T4_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11679] COND FALSE !(M_E == 0) [L11684] COND FALSE !(T1_E == 0) [L11689] COND FALSE !(T2_E == 0) [L11694] COND FALSE !(T3_E == 0) [L11699] COND FALSE !(T4_E == 0) [L11704] COND FALSE !(E_M == 0) [L11709] COND FALSE !(E_1 == 0) [L11714] COND FALSE !(E_2 == 0) [L11719] COND FALSE !(E_3 == 0) [L11724] COND FALSE !(E_4 == 0) [L11963] RET fire_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11964] CALL activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11792] int tmp ; [L11793] int tmp___0 ; [L11794] int tmp___1 ; [L11795] int tmp___2 ; [L11796] int tmp___3 ; [L11800] CALL, EXPR is_master_triggered() [L11412] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11415] COND FALSE !(m_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11425] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11427] return (__retres1); [L11800] RET, EXPR is_master_triggered() [L11800] tmp = is_master_triggered() [L11802] COND FALSE !(\read(tmp)) [L11808] CALL, EXPR is_transmit1_triggered() [L11431] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11434] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11444] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11446] return (__retres1); [L11808] RET, EXPR is_transmit1_triggered() [L11808] tmp___0 = is_transmit1_triggered() [L11810] COND FALSE !(\read(tmp___0)) [L11816] CALL, EXPR is_transmit2_triggered() [L11450] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11453] COND FALSE !(t2_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11463] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11465] return (__retres1); [L11816] RET, EXPR is_transmit2_triggered() [L11816] tmp___1 = is_transmit2_triggered() [L11818] COND FALSE !(\read(tmp___1)) [L11824] CALL, EXPR is_transmit3_triggered() [L11469] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11472] COND FALSE !(t3_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11482] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11484] return (__retres1); [L11824] RET, EXPR is_transmit3_triggered() [L11824] tmp___2 = is_transmit3_triggered() [L11826] COND FALSE !(\read(tmp___2)) [L11832] CALL, EXPR is_transmit4_triggered() [L11488] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11491] COND FALSE !(t4_pc == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11501] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=0, \old(t1_st)=0, \old(t2_st)=0, \old(t3_st)=0, \old(t4_st)=0, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11503] return (__retres1); [L11832] RET, EXPR is_transmit4_triggered() [L11832] tmp___3 = is_transmit4_triggered() [L11834] COND FALSE !(\read(tmp___3)) [L11964] RET activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11965] CALL reset_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(E_1)=2, \old(E_2)=2, \old(E_3)=2, \old(E_4)=2, \old(E_M)=2, \old(M_E)=2, \old(T1_E)=2, \old(T2_E)=2, \old(T3_E)=2, \old(T4_E)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11737] COND FALSE !(M_E == 1) [L11742] COND FALSE !(T1_E == 1) [L11747] COND FALSE !(T2_E == 1) [L11752] COND FALSE !(T3_E == 1) [L11757] COND FALSE !(T4_E == 1) [L11762] COND FALSE !(E_M == 1) [L11767] COND FALSE !(E_1 == 1) [L11772] COND FALSE !(E_2 == 1) [L11777] COND FALSE !(E_3 == 1) [L11782] COND FALSE !(E_4 == 1) [L11965] RET reset_delta_events() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, kernel_st=0, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11968] COND TRUE 1 [L11971] kernel_st = 1 [L11972] CALL eval() [L11584] int tmp ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11588] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11591] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11548] int __retres1 ; [L11551] COND TRUE m_st == 0 [L11552] __retres1 = 1 [L11579] return (__retres1); [L11591] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11591] tmp = exists_runnable_thread() [L11593] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, tmp=1, token=0] [L11598] COND TRUE m_st == 0 [L11599] int tmp_ndt_1; [L11600] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L11601] COND FALSE, EXPR !(\read(tmp_ndt_1)) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, tmp=1, tmp_ndt_1=0, token=0] [L11598-L11609] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=0, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, tmp=1, token=0] [L11612] COND TRUE t1_st == 0 [L11613] int tmp_ndt_2; [L11614] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L11615] COND TRUE, EXPR \read(tmp_ndt_2) [L11617] EXPR t1_st = 1 [L11618] CALL, EXPR transmit1() [L11271] COND TRUE t1_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=0, t1_st=1, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11282] COND TRUE 1 [L11284] t1_pc = 1 [L11285] t1_st = 2 [L11618] RET, EXPR transmit1() [L11612-L11623] { int tmp_ndt_2; tmp_ndt_2 = __VERIFIER_nondet_int(); if (tmp_ndt_2) { { t1_st = 1; transmit1(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=0, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, tmp=1, token=0] [L11626] COND TRUE t2_st == 0 [L11627] int tmp_ndt_3; [L11628] EXPR tmp_ndt_3 = __VERIFIER_nondet_int() [L11629] COND TRUE, EXPR \read(tmp_ndt_3) [L11631] EXPR t2_st = 1 [L11632] CALL, EXPR transmit2() [L11307] COND TRUE t2_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=0, t2_st=1, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11318] COND TRUE 1 [L11320] t2_pc = 1 [L11321] t2_st = 2 [L11632] RET, EXPR transmit2() [L11626-L11637] { int tmp_ndt_3; tmp_ndt_3 = __VERIFIER_nondet_int(); if (tmp_ndt_3) { { t2_st = 1; transmit2(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=0, t3_st=0, t4_i=1, t4_pc=0, t4_st=0, tmp=1, token=0] [L11640] COND TRUE t3_st == 0 [L11641] int tmp_ndt_4; [L11642] EXPR tmp_ndt_4 = __VERIFIER_nondet_int() [L11643] COND TRUE, EXPR \read(tmp_ndt_4) [L11645] EXPR t3_st = 1 [L11646] CALL, EXPR transmit3() [L11343] COND TRUE t3_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=0, t3_st=1, t4_i=1, t4_pc=0, t4_st=0, token=0] [L11354] COND TRUE 1 [L11356] t3_pc = 1 [L11357] t3_st = 2 [L11646] RET, EXPR transmit3() [L11640-L11651] { int tmp_ndt_4; tmp_ndt_4 = __VERIFIER_nondet_int(); if (tmp_ndt_4) { { t3_st = 1; transmit3(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=0, t4_st=0, tmp=1, token=0] [L11654] COND TRUE t4_st == 0 [L11655] int tmp_ndt_5; [L11656] EXPR tmp_ndt_5 = __VERIFIER_nondet_int() [L11657] COND TRUE, EXPR \read(tmp_ndt_5) [L11659] EXPR t4_st = 1 [L11660] CALL, EXPR transmit4() [L11379] COND TRUE t4_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=0, t4_st=1, token=0] [L11390] COND TRUE 1 [L11392] t4_pc = 1 [L11393] t4_st = 2 [L11660] RET, EXPR transmit4() [L11654-L11665] { int tmp_ndt_5; tmp_ndt_5 = __VERIFIER_nondet_int(); if (tmp_ndt_5) { { t4_st = 1; transmit4(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=0] [L11588] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=0] [L11591] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11548] int __retres1 ; [L11551] COND TRUE m_st == 0 [L11552] __retres1 = 1 [L11579] return (__retres1); [L11591] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=0] [L11591] tmp = exists_runnable_thread() [L11593] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=0] [L11598] COND TRUE m_st == 0 [L11599] int tmp_ndt_1; [L11600] EXPR tmp_ndt_1 = __VERIFIER_nondet_int() [L11601] COND TRUE, EXPR \read(tmp_ndt_1) [L11603] EXPR m_st = 1 [L11604] CALL, EXPR master() [L11213] int tmp_var = __VERIFIER_nondet_int(); [L11215] COND TRUE m_pc == 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=0, token=0] [L11226] COND TRUE 1 [L11229] token = __VERIFIER_nondet_int() [L11230] local = token [L11231] E_1 = 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=0, token=0] [L11232] CALL immediate_notify() VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11848] CALL activate_threads() VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11792] int tmp ; [L11793] int tmp___0 ; [L11794] int tmp___1 ; [L11795] int tmp___2 ; [L11796] int tmp___3 ; [L11800] CALL, EXPR is_master_triggered() [L11412] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11415] COND FALSE !(m_pc == 1) VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11425] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11427] return (__retres1); [L11800] RET, EXPR is_master_triggered() [L11800] tmp = is_master_triggered() [L11802] COND FALSE !(\read(tmp)) [L11808] CALL, EXPR is_transmit1_triggered() [L11431] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11434] COND TRUE t1_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11435] COND TRUE E_1 == 1 [L11436] __retres1 = 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11446] return (__retres1); [L11808] RET, EXPR is_transmit1_triggered() [L11808] tmp___0 = is_transmit1_triggered() [L11810] COND TRUE \read(tmp___0) [L11811] t1_st = 0 [L11816] CALL, EXPR is_transmit2_triggered() [L11450] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11453] COND TRUE t2_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11454] COND FALSE !(E_2 == 1) VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11463] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11465] return (__retres1); [L11816] RET, EXPR is_transmit2_triggered() [L11816] tmp___1 = is_transmit2_triggered() [L11818] COND FALSE !(\read(tmp___1)) [L11824] CALL, EXPR is_transmit3_triggered() [L11469] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11472] COND TRUE t3_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11473] COND FALSE !(E_3 == 1) VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11482] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11484] return (__retres1); [L11824] RET, EXPR is_transmit3_triggered() [L11824] tmp___2 = is_transmit3_triggered() [L11826] COND FALSE !(\read(tmp___2)) [L11832] CALL, EXPR is_transmit4_triggered() [L11488] int __retres1 ; VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11491] COND TRUE t4_pc == 1 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11492] COND FALSE !(E_4 == 1) VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11501] __retres1 = 0 VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11503] return (__retres1); [L11832] RET, EXPR is_transmit4_triggered() [L11832] tmp___3 = is_transmit4_triggered() [L11834] COND FALSE !(\read(tmp___3)) [L11848] RET activate_threads() VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=1, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11232] RET immediate_notify() VAL [E_1=1, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=0, m_st=1, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=0, token=0] [L11233] E_1 = 2 [L11234] m_pc = 1 [L11235] m_st = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=0, token=0] [L11604] RET, EXPR master() [L11598-L11609] { int tmp_ndt_1; tmp_ndt_1 = __VERIFIER_nondet_int(); if (tmp_ndt_1) { { m_st = 1; master(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=0, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=0] [L11612] COND TRUE t1_st == 0 [L11613] int tmp_ndt_2; [L11614] EXPR tmp_ndt_2 = __VERIFIER_nondet_int() [L11615] COND TRUE, EXPR \read(tmp_ndt_2) [L11617] EXPR t1_st = 1 [L11618] CALL, EXPR transmit1() [L11271] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=0] [L11274] COND TRUE t1_pc == 1 [L11290] token += 1 [L11291] E_2 = 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11292] CALL immediate_notify() VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11848] CALL activate_threads() VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11792] int tmp ; [L11793] int tmp___0 ; [L11794] int tmp___1 ; [L11795] int tmp___2 ; [L11796] int tmp___3 ; [L11800] CALL, EXPR is_master_triggered() [L11412] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11415] COND TRUE m_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11416] COND FALSE !(E_M == 1) VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11425] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11427] return (__retres1); [L11800] RET, EXPR is_master_triggered() [L11800] tmp = is_master_triggered() [L11802] COND FALSE !(\read(tmp)) [L11808] CALL, EXPR is_transmit1_triggered() [L11431] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11434] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11435] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11444] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11446] return (__retres1); [L11808] RET, EXPR is_transmit1_triggered() [L11808] tmp___0 = is_transmit1_triggered() [L11810] COND FALSE !(\read(tmp___0)) [L11816] CALL, EXPR is_transmit2_triggered() [L11450] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11453] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11454] COND TRUE E_2 == 1 [L11455] __retres1 = 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11465] return (__retres1); [L11816] RET, EXPR is_transmit2_triggered() [L11816] tmp___1 = is_transmit2_triggered() [L11818] COND TRUE \read(tmp___1) [L11819] t2_st = 0 [L11824] CALL, EXPR is_transmit3_triggered() [L11469] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11472] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11473] COND FALSE !(E_3 == 1) VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11482] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11484] return (__retres1); [L11824] RET, EXPR is_transmit3_triggered() [L11824] tmp___2 = is_transmit3_triggered() [L11826] COND FALSE !(\read(tmp___2)) [L11832] CALL, EXPR is_transmit4_triggered() [L11488] int __retres1 ; VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11491] COND TRUE t4_pc == 1 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11492] COND FALSE !(E_4 == 1) VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11501] __retres1 = 0 VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11503] return (__retres1); [L11832] RET, EXPR is_transmit4_triggered() [L11832] tmp___3 = is_transmit4_triggered() [L11834] COND FALSE !(\read(tmp___3)) [L11848] RET activate_threads() VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=1, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11292] RET immediate_notify() VAL [E_1=2, E_2=1, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11293] E_2 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=1, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11282] COND TRUE 1 [L11284] t1_pc = 1 [L11285] t1_st = 2 [L11618] RET, EXPR transmit1() [L11612-L11623] { int tmp_ndt_2; tmp_ndt_2 = __VERIFIER_nondet_int(); if (tmp_ndt_2) { { t1_st = 1; transmit1(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=0, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=1] [L11626] COND TRUE t2_st == 0 [L11627] int tmp_ndt_3; [L11628] EXPR tmp_ndt_3 = __VERIFIER_nondet_int() [L11629] COND TRUE, EXPR \read(tmp_ndt_3) [L11631] EXPR t2_st = 1 [L11632] CALL, EXPR transmit2() [L11307] COND FALSE !(t2_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=1] [L11310] COND TRUE t2_pc == 1 [L11326] token += 1 [L11327] E_3 = 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11328] CALL immediate_notify() VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11848] CALL activate_threads() VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11792] int tmp ; [L11793] int tmp___0 ; [L11794] int tmp___1 ; [L11795] int tmp___2 ; [L11796] int tmp___3 ; [L11800] CALL, EXPR is_master_triggered() [L11412] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11415] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11416] COND FALSE !(E_M == 1) VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11425] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11427] return (__retres1); [L11800] RET, EXPR is_master_triggered() [L11800] tmp = is_master_triggered() [L11802] COND FALSE !(\read(tmp)) [L11808] CALL, EXPR is_transmit1_triggered() [L11431] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11434] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11435] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11444] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11446] return (__retres1); [L11808] RET, EXPR is_transmit1_triggered() [L11808] tmp___0 = is_transmit1_triggered() [L11810] COND FALSE !(\read(tmp___0)) [L11816] CALL, EXPR is_transmit2_triggered() [L11450] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11453] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11454] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11463] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11465] return (__retres1); [L11816] RET, EXPR is_transmit2_triggered() [L11816] tmp___1 = is_transmit2_triggered() [L11818] COND FALSE !(\read(tmp___1)) [L11824] CALL, EXPR is_transmit3_triggered() [L11469] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11472] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11473] COND TRUE E_3 == 1 [L11474] __retres1 = 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11484] return (__retres1); [L11824] RET, EXPR is_transmit3_triggered() [L11824] tmp___2 = is_transmit3_triggered() [L11826] COND TRUE \read(tmp___2) [L11827] t3_st = 0 [L11832] CALL, EXPR is_transmit4_triggered() [L11488] int __retres1 ; VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11491] COND TRUE t4_pc == 1 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11492] COND FALSE !(E_4 == 1) VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11501] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11503] return (__retres1); [L11832] RET, EXPR is_transmit4_triggered() [L11832] tmp___3 = is_transmit4_triggered() [L11834] COND FALSE !(\read(tmp___3)) [L11848] RET activate_threads() VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=1, \old(t3_st)=2, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11328] RET immediate_notify() VAL [E_1=2, E_2=2, E_3=1, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11329] E_3 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=1, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11318] COND TRUE 1 [L11320] t2_pc = 1 [L11321] t2_st = 2 [L11632] RET, EXPR transmit2() [L11626-L11637] { int tmp_ndt_3; tmp_ndt_3 = __VERIFIER_nondet_int(); if (tmp_ndt_3) { { t2_st = 1; transmit2(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=0, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=2] [L11640] COND TRUE t3_st == 0 [L11641] int tmp_ndt_4; [L11642] EXPR tmp_ndt_4 = __VERIFIER_nondet_int() [L11643] COND TRUE, EXPR \read(tmp_ndt_4) [L11645] EXPR t3_st = 1 [L11646] CALL, EXPR transmit3() [L11343] COND FALSE !(t3_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=2] [L11346] COND TRUE t3_pc == 1 [L11362] token += 1 [L11363] E_4 = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11364] CALL immediate_notify() VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11848] CALL activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11792] int tmp ; [L11793] int tmp___0 ; [L11794] int tmp___1 ; [L11795] int tmp___2 ; [L11796] int tmp___3 ; [L11800] CALL, EXPR is_master_triggered() [L11412] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11415] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11416] COND FALSE !(E_M == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11425] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11427] return (__retres1); [L11800] RET, EXPR is_master_triggered() [L11800] tmp = is_master_triggered() [L11802] COND FALSE !(\read(tmp)) [L11808] CALL, EXPR is_transmit1_triggered() [L11431] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11434] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11435] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11444] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11446] return (__retres1); [L11808] RET, EXPR is_transmit1_triggered() [L11808] tmp___0 = is_transmit1_triggered() [L11810] COND FALSE !(\read(tmp___0)) [L11816] CALL, EXPR is_transmit2_triggered() [L11450] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11453] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11454] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11463] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11465] return (__retres1); [L11816] RET, EXPR is_transmit2_triggered() [L11816] tmp___1 = is_transmit2_triggered() [L11818] COND FALSE !(\read(tmp___1)) [L11824] CALL, EXPR is_transmit3_triggered() [L11469] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11472] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11473] COND FALSE !(E_3 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11482] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11484] return (__retres1); [L11824] RET, EXPR is_transmit3_triggered() [L11824] tmp___2 = is_transmit3_triggered() [L11826] COND FALSE !(\read(tmp___2)) [L11832] CALL, EXPR is_transmit4_triggered() [L11488] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11491] COND TRUE t4_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11492] COND TRUE E_4 == 1 [L11493] __retres1 = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=2, token=3] [L11503] return (__retres1); [L11832] RET, EXPR is_transmit4_triggered() [L11832] tmp___3 = is_transmit4_triggered() [L11834] COND TRUE \read(tmp___3) [L11835] t4_st = 0 [L11848] RET activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=1, \old(t4_st)=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=0, token=3] [L11364] RET immediate_notify() VAL [E_1=2, E_2=2, E_3=2, E_4=1, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=0, token=3] [L11365] E_4 = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=1, t4_i=1, t4_pc=1, t4_st=0, token=3] [L11354] COND TRUE 1 [L11356] t3_pc = 1 [L11357] t3_st = 2 [L11646] RET, EXPR transmit3() [L11640-L11651] { int tmp_ndt_4; tmp_ndt_4 = __VERIFIER_nondet_int(); if (tmp_ndt_4) { { t3_st = 1; transmit3(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=0, tmp=1, token=3] [L11654] COND TRUE t4_st == 0 [L11655] int tmp_ndt_5; [L11656] EXPR tmp_ndt_5 = __VERIFIER_nondet_int() [L11657] COND TRUE, EXPR \read(tmp_ndt_5) [L11659] EXPR t4_st = 1 [L11660] CALL, EXPR transmit4() [L11379] COND FALSE !(t4_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=3] [L11382] COND TRUE t4_pc == 1 [L11398] token += 1 [L11399] E_M = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11400] CALL immediate_notify() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11848] CALL activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11792] int tmp ; [L11793] int tmp___0 ; [L11794] int tmp___1 ; [L11795] int tmp___2 ; [L11796] int tmp___3 ; [L11800] CALL, EXPR is_master_triggered() [L11412] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11415] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11416] COND TRUE E_M == 1 [L11417] __retres1 = 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, __retres1=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=2, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11427] return (__retres1); [L11800] RET, EXPR is_master_triggered() [L11800] tmp = is_master_triggered() [L11802] COND TRUE \read(tmp) [L11803] m_st = 0 [L11808] CALL, EXPR is_transmit1_triggered() [L11431] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11434] COND TRUE t1_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11435] COND FALSE !(E_1 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11444] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11446] return (__retres1); [L11808] RET, EXPR is_transmit1_triggered() [L11808] tmp___0 = is_transmit1_triggered() [L11810] COND FALSE !(\read(tmp___0)) [L11816] CALL, EXPR is_transmit2_triggered() [L11450] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11453] COND TRUE t2_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11454] COND FALSE !(E_2 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11463] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11465] return (__retres1); [L11816] RET, EXPR is_transmit2_triggered() [L11816] tmp___1 = is_transmit2_triggered() [L11818] COND FALSE !(\read(tmp___1)) [L11824] CALL, EXPR is_transmit3_triggered() [L11469] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11472] COND TRUE t3_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11473] COND FALSE !(E_3 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11482] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11484] return (__retres1); [L11824] RET, EXPR is_transmit3_triggered() [L11824] tmp___2 = is_transmit3_triggered() [L11826] COND FALSE !(\read(tmp___2)) [L11832] CALL, EXPR is_transmit4_triggered() [L11488] int __retres1 ; VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11491] COND TRUE t4_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11492] COND FALSE !(E_4 == 1) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11501] __retres1 = 0 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, __retres1=0, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11503] return (__retres1); [L11832] RET, EXPR is_transmit4_triggered() [L11832] tmp___3 = is_transmit4_triggered() [L11834] COND FALSE !(\read(tmp___3)) [L11848] RET activate_threads() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, \old(m_st)=2, \old(t1_st)=2, \old(t2_st)=2, \old(t3_st)=2, \old(t4_st)=1, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11400] RET immediate_notify() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=1, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11401] E_M = 2 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=1, token=4] [L11390] COND TRUE 1 [L11392] t4_pc = 1 [L11393] t4_st = 2 [L11660] RET, EXPR transmit4() [L11654-L11665] { int tmp_ndt_5; tmp_ndt_5 = __VERIFIER_nondet_int(); if (tmp_ndt_5) { { t4_st = 1; transmit4(); } } else { } } VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=4] [L11588] COND TRUE 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=4] [L11591] CALL, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=4] [L11548] int __retres1 ; [L11551] COND TRUE m_st == 0 [L11552] __retres1 = 1 [L11579] return (__retres1); [L11591] RET, EXPR exists_runnable_thread() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=4] [L11591] tmp = exists_runnable_thread() [L11593] COND TRUE \read(tmp) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=0, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp=1, token=4] [L11598] COND TRUE m_st == 0 [L11599] int tmp_ndt_1; [L11600] tmp_ndt_1 = __VERIFIER_nondet_int() [L11601] COND TRUE \read(tmp_ndt_1) [L11603] m_st = 1 [L11604] CALL master() [L11213] int tmp_var = __VERIFIER_nondet_int(); [L11215] COND FALSE !(m_pc == 0) VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=5, token=4] [L11218] COND TRUE m_pc == 1 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=5, token=4] [L11240] COND FALSE !(token != local + 4) [L11245] COND TRUE tmp_var <= 5 [L11246] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=5, token=4] [L11251] COND TRUE tmp_var <= 5 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=5, token=4] [L11252] COND TRUE tmp_var >= 5 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=5, token=4] [L11253] COND TRUE tmp_var == 5 VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, tmp_var=5, token=4] [L11254] CALL error() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=4] [L11173] reach_error() VAL [E_1=2, E_2=2, E_3=2, E_4=2, E_M=2, M_E=2, T1_E=2, T2_E=2, T3_E=2, T4_E=2, a12=4, a15=1, a16=1, a20=5, a25=1, a27=1, a2=10, a9=18, a=1, b=2, c=3, d=4, e=5, f=6, local=0, m_i=1, m_pc=1, m_st=1, t1_i=1, t1_pc=1, t1_st=2, t2_i=1, t2_pc=1, t2_st=2, t3_i=1, t3_pc=1, t3_st=2, t4_i=1, t4_pc=1, t4_st=2, token=4] - UnprovableResult [Line: 11133]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 1754 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 409.4s, OverallIterations: 38, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.5s, AutomataDifference: 129.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 176298 SdHoareTripleChecker+Valid, 30.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176150 mSDsluCounter, 398330 SdHoareTripleChecker+Invalid, 26.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 276367 mSDsCounter, 5502 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49084 IncrementalHoareTripleChecker+Invalid, 54586 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5502 mSolverCounterUnsat, 121963 mSDtfsCounter, 49084 mSolverCounterSat, 1.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7741 GetRequests, 6118 SyntacticMatches, 8 SemanticMatches, 1615 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144985 ImplicationChecksByTransitivity, 108.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38617occurred in iteration=22, InterpolantAutomatonStates: 1059, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 54.4s AutomataMinimizationTime, 37 MinimizatonAttempts, 217480 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 13.1s InterpolantComputationTime, 9329 NumberOfCodeBlocks, 9329 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 9996 ConstructedInterpolants, 0 QuantifiedInterpolants, 20321 SizeOfPredicates, 58 NumberOfNonLiveVariables, 21184 ConjunctsInSsa, 307 ConjunctsInUnsatCore, 75 InterpolantComputations, 30 PerfectInterpolantSequences, 5941/6816 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-02 18:50:45,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1168d39c-2529-48fe-8a33-742ba29121fd/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE